0,0 → 1,21559 |
/* DO NOT EDIT! |
** This file is automatically generated by the script in the canonical |
** SQLite source tree at tool/mkshellc.tcl. That script combines source |
** code from various constituent source files of SQLite into this single |
** "shell.c" file used to implement the SQLite command-line shell. |
** |
** Most of the code found below comes from the "src/shell.c.in" file in |
** the canonical SQLite source tree. That main file contains "INCLUDE" |
** lines that specify other files in the canonical source tree that are |
** inserted to getnerate this complete program source file. |
** |
** The code from multiple files is combined into this single "shell.c" |
** source file to help make the command-line program easier to compile. |
** |
** To modify this program, get a copy of the canonical SQLite source tree, |
** edit the src/shell.c.in" and/or some of the other files that are included |
** by "src/shell.c.in", then rerun the tool/mkshellc.tcl script. |
*/ |
/* |
** 2001 September 15 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
************************************************************************* |
** This file contains code to implement the "sqlite" command line |
** utility for accessing SQLite databases. |
*/ |
#if (defined(_WIN32) || defined(WIN32)) && !defined(_CRT_SECURE_NO_WARNINGS) |
/* This needs to come before any includes for MSVC compiler */ |
#define _CRT_SECURE_NO_WARNINGS |
#endif |
|
/* |
** Determine if we are dealing with WinRT, which provides only a subset of |
** the full Win32 API. |
*/ |
#if !defined(SQLITE_OS_WINRT) |
# define SQLITE_OS_WINRT 0 |
#endif |
|
/* |
** Warning pragmas copied from msvc.h in the core. |
*/ |
#if defined(_MSC_VER) |
#pragma warning(disable : 4054) |
#pragma warning(disable : 4055) |
#pragma warning(disable : 4100) |
#pragma warning(disable : 4127) |
#pragma warning(disable : 4130) |
#pragma warning(disable : 4152) |
#pragma warning(disable : 4189) |
#pragma warning(disable : 4206) |
#pragma warning(disable : 4210) |
#pragma warning(disable : 4232) |
#pragma warning(disable : 4244) |
#pragma warning(disable : 4305) |
#pragma warning(disable : 4306) |
#pragma warning(disable : 4702) |
#pragma warning(disable : 4706) |
#endif /* defined(_MSC_VER) */ |
|
/* |
** No support for loadable extensions in VxWorks. |
*/ |
#if (defined(__RTP__) || defined(_WRS_KERNEL)) && !SQLITE_OMIT_LOAD_EXTENSION |
# define SQLITE_OMIT_LOAD_EXTENSION 1 |
#endif |
|
/* |
** Enable large-file support for fopen() and friends on unix. |
*/ |
#ifndef SQLITE_DISABLE_LFS |
# define _LARGE_FILE 1 |
# ifndef _FILE_OFFSET_BITS |
# define _FILE_OFFSET_BITS 64 |
# endif |
# define _LARGEFILE_SOURCE 1 |
#endif |
|
#include <stdlib.h> |
#include <string.h> |
#include <stdio.h> |
#include <assert.h> |
#include "sqlite3.h" |
typedef sqlite3_int64 i64; |
typedef sqlite3_uint64 u64; |
typedef unsigned char u8; |
#if SQLITE_USER_AUTHENTICATION |
# include "sqlite3userauth.h" |
#endif |
#include <ctype.h> |
#include <stdarg.h> |
|
#if !defined(_WIN32) && !defined(WIN32) |
# include <signal.h> |
# if !defined(__RTP__) && !defined(_WRS_KERNEL) |
# include <pwd.h> |
# endif |
#endif |
#if (!defined(_WIN32) && !defined(WIN32)) || defined(__MINGW32__) |
# include <unistd.h> |
# include <dirent.h> |
# define GETPID getpid |
# if defined(__MINGW32__) |
# define DIRENT dirent |
# ifndef S_ISLNK |
# define S_ISLNK(mode) (0) |
# endif |
# endif |
#else |
# define GETPID (int)GetCurrentProcessId |
#endif |
#include <sys/types.h> |
#include <sys/stat.h> |
|
#if HAVE_READLINE |
# include <readline/readline.h> |
# include <readline/history.h> |
#endif |
|
#if HAVE_EDITLINE |
# include <editline/readline.h> |
#endif |
|
#if HAVE_EDITLINE || HAVE_READLINE |
|
# define shell_add_history(X) add_history(X) |
# define shell_read_history(X) read_history(X) |
# define shell_write_history(X) write_history(X) |
# define shell_stifle_history(X) stifle_history(X) |
# define shell_readline(X) readline(X) |
|
#elif HAVE_LINENOISE |
|
# include "linenoise.h" |
# define shell_add_history(X) linenoiseHistoryAdd(X) |
# define shell_read_history(X) linenoiseHistoryLoad(X) |
# define shell_write_history(X) linenoiseHistorySave(X) |
# define shell_stifle_history(X) linenoiseHistorySetMaxLen(X) |
# define shell_readline(X) linenoise(X) |
|
#else |
|
# define shell_read_history(X) |
# define shell_write_history(X) |
# define shell_stifle_history(X) |
|
# define SHELL_USE_LOCAL_GETLINE 1 |
#endif |
|
|
#if defined(_WIN32) || defined(WIN32) |
# if SQLITE_OS_WINRT |
# define SQLITE_OMIT_POPEN 1 |
# else |
# include <io.h> |
# include <fcntl.h> |
# define isatty(h) _isatty(h) |
# ifndef access |
# define access(f,m) _access((f),(m)) |
# endif |
# ifndef unlink |
# define unlink _unlink |
# endif |
# ifndef strdup |
# define strdup _strdup |
# endif |
# undef popen |
# define popen _popen |
# undef pclose |
# define pclose _pclose |
# endif |
#else |
/* Make sure isatty() has a prototype. */ |
extern int isatty(int); |
|
# if !defined(__RTP__) && !defined(_WRS_KERNEL) |
/* popen and pclose are not C89 functions and so are |
** sometimes omitted from the <stdio.h> header */ |
extern FILE *popen(const char*,const char*); |
extern int pclose(FILE*); |
# else |
# define SQLITE_OMIT_POPEN 1 |
# endif |
#endif |
|
#if defined(_WIN32_WCE) |
/* Windows CE (arm-wince-mingw32ce-gcc) does not provide isatty() |
* thus we always assume that we have a console. That can be |
* overridden with the -batch command line option. |
*/ |
#define isatty(x) 1 |
#endif |
|
/* ctype macros that work with signed characters */ |
#define IsSpace(X) isspace((unsigned char)X) |
#define IsDigit(X) isdigit((unsigned char)X) |
#define ToLower(X) (char)tolower((unsigned char)X) |
|
#if defined(_WIN32) || defined(WIN32) |
#if SQLITE_OS_WINRT |
#include <intrin.h> |
#endif |
//#include <windows.h> |
|
#define stderr stdout |
|
/* string conversion routines only needed on Win32 */ |
extern char *sqlite3_win32_unicode_to_utf8(LPCWSTR); |
extern char *sqlite3_win32_mbcs_to_utf8_v2(const char *, int); |
extern char *sqlite3_win32_utf8_to_mbcs_v2(const char *, int); |
extern LPWSTR sqlite3_win32_utf8_to_unicode(const char *zText); |
#endif |
|
/* On Windows, we normally run with output mode of TEXT so that \n characters |
** are automatically translated into \r\n. However, this behavior needs |
** to be disabled in some cases (ex: when generating CSV output and when |
** rendering quoted strings that contain \n characters). The following |
** routines take care of that. |
*/ |
#if (defined(_WIN32) || defined(WIN32)) && !SQLITE_OS_WINRT |
static void setBinaryMode(FILE *file, int isOutput){ |
if( isOutput ) fflush(file); |
_setmode(_fileno(file), _O_BINARY); |
} |
static void setTextMode(FILE *file, int isOutput){ |
if( isOutput ) fflush(file); |
_setmode(_fileno(file), _O_TEXT); |
} |
#else |
# define setBinaryMode(X,Y) |
# define setTextMode(X,Y) |
#endif |
|
|
/* True if the timer is enabled */ |
static int enableTimer = 0; |
|
/* Return the current wall-clock time */ |
static sqlite3_int64 timeOfDay(void){ |
static sqlite3_vfs *clockVfs = 0; |
sqlite3_int64 t; |
if( clockVfs==0 ) clockVfs = sqlite3_vfs_find(0); |
if( clockVfs->iVersion>=2 && clockVfs->xCurrentTimeInt64!=0 ){ |
clockVfs->xCurrentTimeInt64(clockVfs, &t); |
}else{ |
double r; |
clockVfs->xCurrentTime(clockVfs, &r); |
t = (sqlite3_int64)(r*86400000.0); |
} |
return t; |
} |
|
#if !defined(_WIN32) && !defined(WIN32) && !defined(__minux) |
#include <sys/time.h> |
#include <sys/resource.h> |
|
/* VxWorks does not support getrusage() as far as we can determine */ |
#if defined(_WRS_KERNEL) || defined(__RTP__) |
struct rusage { |
struct timeval ru_utime; /* user CPU time used */ |
struct timeval ru_stime; /* system CPU time used */ |
}; |
#define getrusage(A,B) memset(B,0,sizeof(*B)) |
#endif |
|
#ifdef _KOLIBRI |
#define getrusage(A,B) memset(B,0,sizeof(*B)) |
#endif |
|
/* Saved resource information for the beginning of an operation */ |
static struct rusage sBegin; /* CPU time at start */ |
static sqlite3_int64 iBegin; /* Wall-clock time at start */ |
|
/* |
** Begin timing an operation |
*/ |
static void beginTimer(void){ |
if( enableTimer ){ |
getrusage(RUSAGE_SELF, &sBegin); |
iBegin = timeOfDay(); |
} |
} |
|
/* Return the difference of two time_structs in seconds */ |
static double timeDiff(struct timeval *pStart, struct timeval *pEnd){ |
return (pEnd->tv_usec - pStart->tv_usec)*0.000001 + |
(double)(pEnd->tv_sec - pStart->tv_sec); |
} |
|
/* |
** Print the timing results. |
*/ |
static void endTimer(void){ |
if( enableTimer ){ |
sqlite3_int64 iEnd = timeOfDay(); |
struct rusage sEnd; |
getrusage(RUSAGE_SELF, &sEnd); |
printf("Run Time: real %.3f user %f sys %f\n", |
(iEnd - iBegin)*0.001, |
timeDiff(&sBegin.ru_utime, &sEnd.ru_utime), |
timeDiff(&sBegin.ru_stime, &sEnd.ru_stime)); |
} |
} |
|
#define BEGIN_TIMER beginTimer() |
#define END_TIMER endTimer() |
#define HAS_TIMER 1 |
|
#elif (defined(_WIN32) || defined(WIN32)) |
|
/* Saved resource information for the beginning of an operation */ |
static HANDLE hProcess; |
static FILETIME ftKernelBegin; |
static FILETIME ftUserBegin; |
static sqlite3_int64 ftWallBegin; |
typedef BOOL (WINAPI *GETPROCTIMES)(HANDLE, LPFILETIME, LPFILETIME, |
LPFILETIME, LPFILETIME); |
static GETPROCTIMES getProcessTimesAddr = NULL; |
|
/* |
** Check to see if we have timer support. Return 1 if necessary |
** support found (or found previously). |
*/ |
static int hasTimer(void){ |
if( getProcessTimesAddr ){ |
return 1; |
} else { |
#if !SQLITE_OS_WINRT |
/* GetProcessTimes() isn't supported in WIN95 and some other Windows |
** versions. See if the version we are running on has it, and if it |
** does, save off a pointer to it and the current process handle. |
*/ |
hProcess = GetCurrentProcess(); |
if( hProcess ){ |
HINSTANCE hinstLib = LoadLibrary(TEXT("Kernel32.dll")); |
if( NULL != hinstLib ){ |
getProcessTimesAddr = |
(GETPROCTIMES) GetProcAddress(hinstLib, "GetProcessTimes"); |
if( NULL != getProcessTimesAddr ){ |
return 1; |
} |
FreeLibrary(hinstLib); |
} |
} |
#endif |
} |
return 0; |
} |
|
/* |
** Begin timing an operation |
*/ |
static void beginTimer(void){ |
if( enableTimer && getProcessTimesAddr ){ |
FILETIME ftCreation, ftExit; |
getProcessTimesAddr(hProcess,&ftCreation,&ftExit, |
&ftKernelBegin,&ftUserBegin); |
ftWallBegin = timeOfDay(); |
} |
} |
|
/* Return the difference of two FILETIME structs in seconds */ |
static double timeDiff(FILETIME *pStart, FILETIME *pEnd){ |
sqlite_int64 i64Start = *((sqlite_int64 *) pStart); |
sqlite_int64 i64End = *((sqlite_int64 *) pEnd); |
return (double) ((i64End - i64Start) / 10000000.0); |
} |
|
/* |
** Print the timing results. |
*/ |
static void endTimer(void){ |
if( enableTimer && getProcessTimesAddr){ |
FILETIME ftCreation, ftExit, ftKernelEnd, ftUserEnd; |
sqlite3_int64 ftWallEnd = timeOfDay(); |
getProcessTimesAddr(hProcess,&ftCreation,&ftExit,&ftKernelEnd,&ftUserEnd); |
printf("Run Time: real %.3f user %f sys %f\n", |
(ftWallEnd - ftWallBegin)*0.001, |
timeDiff(&ftUserBegin, &ftUserEnd), |
timeDiff(&ftKernelBegin, &ftKernelEnd)); |
} |
} |
|
#define BEGIN_TIMER beginTimer() |
#define END_TIMER endTimer() |
#define HAS_TIMER hasTimer() |
|
#else |
#define BEGIN_TIMER |
#define END_TIMER |
#define HAS_TIMER 0 |
#endif |
|
/* |
** Used to prevent warnings about unused parameters |
*/ |
#define UNUSED_PARAMETER(x) (void)(x) |
|
/* |
** Number of elements in an array |
*/ |
#define ArraySize(X) (int)(sizeof(X)/sizeof(X[0])) |
|
/* |
** If the following flag is set, then command execution stops |
** at an error if we are not interactive. |
*/ |
static int bail_on_error = 0; |
|
/* |
** Threat stdin as an interactive input if the following variable |
** is true. Otherwise, assume stdin is connected to a file or pipe. |
*/ |
static int stdin_is_interactive = 1; |
|
/* |
** On Windows systems we have to know if standard output is a console |
** in order to translate UTF-8 into MBCS. The following variable is |
** true if translation is required. |
*/ |
static int stdout_is_console = 1; |
|
/* |
** The following is the open SQLite database. We make a pointer |
** to this database a static variable so that it can be accessed |
** by the SIGINT handler to interrupt database processing. |
*/ |
static sqlite3 *globalDb = 0; |
|
/* |
** True if an interrupt (Control-C) has been received. |
*/ |
static volatile int seenInterrupt = 0; |
|
#ifdef SQLITE_DEBUG |
/* |
** Out-of-memory simulator variables |
*/ |
static unsigned int oomCounter = 0; /* Simulate OOM when equals 1 */ |
static unsigned int oomRepeat = 0; /* Number of OOMs in a row */ |
static void*(*defaultMalloc)(int) = 0; /* The low-level malloc routine */ |
#endif /* SQLITE_DEBUG */ |
|
/* |
** This is the name of our program. It is set in main(), used |
** in a number of other places, mostly for error messages. |
*/ |
static char *Argv0; |
|
/* |
** Prompt strings. Initialized in main. Settable with |
** .prompt main continue |
*/ |
static char mainPrompt[20]; /* First line prompt. default: "sqlite> "*/ |
static char continuePrompt[20]; /* Continuation prompt. default: " ...> " */ |
|
/* |
** Render output like fprintf(). Except, if the output is going to the |
** console and if this is running on a Windows machine, translate the |
** output from UTF-8 into MBCS. |
*/ |
#if defined(_WIN32) || defined(WIN32) |
void utf8_printf(FILE *out, const char *zFormat, ...){ |
va_list ap; |
va_start(ap, zFormat); |
if( stdout_is_console && (out==stdout || out==stderr) ){ |
char *z1 = sqlite3_vmprintf(zFormat, ap); |
char *z2 = sqlite3_win32_utf8_to_mbcs_v2(z1, 0); |
sqlite3_free(z1); |
fputs(z2, out); |
sqlite3_free(z2); |
}else{ |
vfprintf(out, zFormat, ap); |
} |
va_end(ap); |
} |
#elif !defined(utf8_printf) |
# define utf8_printf fprintf |
#endif |
|
/* |
** Render output like fprintf(). This should not be used on anything that |
** includes string formatting (e.g. "%s"). |
*/ |
#if !defined(raw_printf) |
# define raw_printf fprintf |
#endif |
|
/* Indicate out-of-memory and exit. */ |
static void shell_out_of_memory(void){ |
raw_printf(stderr,"Error: out of memory\n"); |
exit(1); |
} |
|
#ifdef SQLITE_DEBUG |
/* This routine is called when a simulated OOM occurs. It is broken |
** out as a separate routine to make it easy to set a breakpoint on |
** the OOM |
*/ |
void shellOomFault(void){ |
if( oomRepeat>0 ){ |
oomRepeat--; |
}else{ |
oomCounter--; |
} |
} |
#endif /* SQLITE_DEBUG */ |
|
#ifdef SQLITE_DEBUG |
/* This routine is a replacement malloc() that is used to simulate |
** Out-Of-Memory (OOM) errors for testing purposes. |
*/ |
static void *oomMalloc(int nByte){ |
if( oomCounter ){ |
if( oomCounter==1 ){ |
shellOomFault(); |
return 0; |
}else{ |
oomCounter--; |
} |
} |
return defaultMalloc(nByte); |
} |
#endif /* SQLITE_DEBUG */ |
|
#ifdef SQLITE_DEBUG |
/* Register the OOM simulator. This must occur before any memory |
** allocations */ |
static void registerOomSimulator(void){ |
sqlite3_mem_methods mem; |
sqlite3_config(SQLITE_CONFIG_GETMALLOC, &mem); |
defaultMalloc = mem.xMalloc; |
mem.xMalloc = oomMalloc; |
sqlite3_config(SQLITE_CONFIG_MALLOC, &mem); |
} |
#endif |
|
/* |
** Write I/O traces to the following stream. |
*/ |
#ifdef SQLITE_ENABLE_IOTRACE |
static FILE *iotrace = 0; |
#endif |
|
/* |
** This routine works like printf in that its first argument is a |
** format string and subsequent arguments are values to be substituted |
** in place of % fields. The result of formatting this string |
** is written to iotrace. |
*/ |
#ifdef SQLITE_ENABLE_IOTRACE |
static void SQLITE_CDECL iotracePrintf(const char *zFormat, ...){ |
va_list ap; |
char *z; |
if( iotrace==0 ) return; |
va_start(ap, zFormat); |
z = sqlite3_vmprintf(zFormat, ap); |
va_end(ap); |
utf8_printf(iotrace, "%s", z); |
sqlite3_free(z); |
} |
#endif |
|
/* |
** Output string zUtf to stream pOut as w characters. If w is negative, |
** then right-justify the text. W is the width in UTF-8 characters, not |
** in bytes. This is different from the %*.*s specification in printf |
** since with %*.*s the width is measured in bytes, not characters. |
*/ |
static void utf8_width_print(FILE *pOut, int w, const char *zUtf){ |
int i; |
int n; |
int aw = w<0 ? -w : w; |
for(i=n=0; zUtf[i]; i++){ |
if( (zUtf[i]&0xc0)!=0x80 ){ |
n++; |
if( n==aw ){ |
do{ i++; }while( (zUtf[i]&0xc0)==0x80 ); |
break; |
} |
} |
} |
if( n>=aw ){ |
utf8_printf(pOut, "%.*s", i, zUtf); |
}else if( w<0 ){ |
utf8_printf(pOut, "%*s%s", aw-n, "", zUtf); |
}else{ |
utf8_printf(pOut, "%s%*s", zUtf, aw-n, ""); |
} |
} |
|
|
/* |
** Determines if a string is a number of not. |
*/ |
static int isNumber(const char *z, int *realnum){ |
if( *z=='-' || *z=='+' ) z++; |
if( !IsDigit(*z) ){ |
return 0; |
} |
z++; |
if( realnum ) *realnum = 0; |
while( IsDigit(*z) ){ z++; } |
if( *z=='.' ){ |
z++; |
if( !IsDigit(*z) ) return 0; |
while( IsDigit(*z) ){ z++; } |
if( realnum ) *realnum = 1; |
} |
if( *z=='e' || *z=='E' ){ |
z++; |
if( *z=='+' || *z=='-' ) z++; |
if( !IsDigit(*z) ) return 0; |
while( IsDigit(*z) ){ z++; } |
if( realnum ) *realnum = 1; |
} |
return *z==0; |
} |
|
/* |
** Compute a string length that is limited to what can be stored in |
** lower 30 bits of a 32-bit signed integer. |
*/ |
static int strlen30(const char *z){ |
const char *z2 = z; |
while( *z2 ){ z2++; } |
return 0x3fffffff & (int)(z2 - z); |
} |
|
/* |
** Return the length of a string in characters. Multibyte UTF8 characters |
** count as a single character. |
*/ |
static int strlenChar(const char *z){ |
int n = 0; |
while( *z ){ |
if( (0xc0&*(z++))!=0x80 ) n++; |
} |
return n; |
} |
|
/* |
** Return true if zFile does not exist or if it is not an ordinary file. |
*/ |
#ifdef _WIN32 |
# define notNormalFile(X) 0 |
#else |
static int notNormalFile(const char *zFile){ |
struct stat x; |
int rc; |
memset(&x, 0, sizeof(x)); |
rc = stat(zFile, &x); |
return rc || !S_ISREG(x.st_mode); |
} |
#endif |
|
/* |
** This routine reads a line of text from FILE in, stores |
** the text in memory obtained from malloc() and returns a pointer |
** to the text. NULL is returned at end of file, or if malloc() |
** fails. |
** |
** If zLine is not NULL then it is a malloced buffer returned from |
** a previous call to this routine that may be reused. |
*/ |
static char *local_getline(char *zLine, FILE *in){ |
int nLine = zLine==0 ? 0 : 100; |
int n = 0; |
|
while( 1 ){ |
if( n+100>nLine ){ |
nLine = nLine*2 + 100; |
zLine = realloc(zLine, nLine); |
if( zLine==0 ) shell_out_of_memory(); |
} |
if( fgets(&zLine[n], nLine - n, in)==0 ){ |
if( n==0 ){ |
free(zLine); |
return 0; |
} |
zLine[n] = 0; |
break; |
} |
while( zLine[n] ) n++; |
if( n>0 && zLine[n-1]=='\n' ){ |
n--; |
if( n>0 && zLine[n-1]=='\r' ) n--; |
zLine[n] = 0; |
break; |
} |
} |
#if defined(_WIN32) || defined(WIN32) |
/* For interactive input on Windows systems, translate the |
** multi-byte characterset characters into UTF-8. */ |
if( stdin_is_interactive && in==stdin ){ |
char *zTrans = sqlite3_win32_mbcs_to_utf8_v2(zLine, 0); |
if( zTrans ){ |
int nTrans = strlen30(zTrans)+1; |
if( nTrans>nLine ){ |
zLine = realloc(zLine, nTrans); |
if( zLine==0 ) shell_out_of_memory(); |
} |
memcpy(zLine, zTrans, nTrans); |
sqlite3_free(zTrans); |
} |
} |
#endif /* defined(_WIN32) || defined(WIN32) */ |
return zLine; |
} |
|
/* |
** Retrieve a single line of input text. |
** |
** If in==0 then read from standard input and prompt before each line. |
** If isContinuation is true, then a continuation prompt is appropriate. |
** If isContinuation is zero, then the main prompt should be used. |
** |
** If zPrior is not NULL then it is a buffer from a prior call to this |
** routine that can be reused. |
** |
** The result is stored in space obtained from malloc() and must either |
** be freed by the caller or else passed back into this routine via the |
** zPrior argument for reuse. |
*/ |
static char *one_input_line(FILE *in, char *zPrior, int isContinuation){ |
char *zPrompt; |
char *zResult; |
if( in!=0 ){ |
zResult = local_getline(zPrior, in); |
}else{ |
zPrompt = isContinuation ? continuePrompt : mainPrompt; |
#if SHELL_USE_LOCAL_GETLINE |
printf("%s", zPrompt); |
fflush(stdout); |
zResult = local_getline(zPrior, stdin); |
#else |
free(zPrior); |
zResult = shell_readline(zPrompt); |
if( zResult && *zResult ) shell_add_history(zResult); |
#endif |
} |
return zResult; |
} |
|
|
/* |
** Return the value of a hexadecimal digit. Return -1 if the input |
** is not a hex digit. |
*/ |
static int hexDigitValue(char c){ |
if( c>='0' && c<='9' ) return c - '0'; |
if( c>='a' && c<='f' ) return c - 'a' + 10; |
if( c>='A' && c<='F' ) return c - 'A' + 10; |
return -1; |
} |
|
/* |
** Interpret zArg as an integer value, possibly with suffixes. |
*/ |
static sqlite3_int64 integerValue(const char *zArg){ |
sqlite3_int64 v = 0; |
static const struct { char *zSuffix; int iMult; } aMult[] = { |
{ "KiB", 1024 }, |
{ "MiB", 1024*1024 }, |
{ "GiB", 1024*1024*1024 }, |
{ "KB", 1000 }, |
{ "MB", 1000000 }, |
{ "GB", 1000000000 }, |
{ "K", 1000 }, |
{ "M", 1000000 }, |
{ "G", 1000000000 }, |
}; |
int i; |
int isNeg = 0; |
if( zArg[0]=='-' ){ |
isNeg = 1; |
zArg++; |
}else if( zArg[0]=='+' ){ |
zArg++; |
} |
if( zArg[0]=='0' && zArg[1]=='x' ){ |
int x; |
zArg += 2; |
while( (x = hexDigitValue(zArg[0]))>=0 ){ |
v = (v<<4) + x; |
zArg++; |
} |
}else{ |
while( IsDigit(zArg[0]) ){ |
v = v*10 + zArg[0] - '0'; |
zArg++; |
} |
} |
for(i=0; i<ArraySize(aMult); i++){ |
if( sqlite3_stricmp(aMult[i].zSuffix, zArg)==0 ){ |
v *= aMult[i].iMult; |
break; |
} |
} |
return isNeg? -v : v; |
} |
|
/* |
** A variable length string to which one can append text. |
*/ |
typedef struct ShellText ShellText; |
struct ShellText { |
char *z; |
int n; |
int nAlloc; |
}; |
|
/* |
** Initialize and destroy a ShellText object |
*/ |
static void initText(ShellText *p){ |
memset(p, 0, sizeof(*p)); |
} |
static void freeText(ShellText *p){ |
free(p->z); |
initText(p); |
} |
|
/* zIn is either a pointer to a NULL-terminated string in memory obtained |
** from malloc(), or a NULL pointer. The string pointed to by zAppend is |
** added to zIn, and the result returned in memory obtained from malloc(). |
** zIn, if it was not NULL, is freed. |
** |
** If the third argument, quote, is not '\0', then it is used as a |
** quote character for zAppend. |
*/ |
static void appendText(ShellText *p, char const *zAppend, char quote){ |
int len; |
int i; |
int nAppend = strlen30(zAppend); |
|
len = nAppend+p->n+1; |
if( quote ){ |
len += 2; |
for(i=0; i<nAppend; i++){ |
if( zAppend[i]==quote ) len++; |
} |
} |
|
if( p->n+len>=p->nAlloc ){ |
p->nAlloc = p->nAlloc*2 + len + 20; |
p->z = realloc(p->z, p->nAlloc); |
if( p->z==0 ) shell_out_of_memory(); |
} |
|
if( quote ){ |
char *zCsr = p->z+p->n; |
*zCsr++ = quote; |
for(i=0; i<nAppend; i++){ |
*zCsr++ = zAppend[i]; |
if( zAppend[i]==quote ) *zCsr++ = quote; |
} |
*zCsr++ = quote; |
p->n = (int)(zCsr - p->z); |
*zCsr = '\0'; |
}else{ |
memcpy(p->z+p->n, zAppend, nAppend); |
p->n += nAppend; |
p->z[p->n] = '\0'; |
} |
} |
|
/* |
** Attempt to determine if identifier zName needs to be quoted, either |
** because it contains non-alphanumeric characters, or because it is an |
** SQLite keyword. Be conservative in this estimate: When in doubt assume |
** that quoting is required. |
** |
** Return '"' if quoting is required. Return 0 if no quoting is required. |
*/ |
static char quoteChar(const char *zName){ |
int i; |
if( !isalpha((unsigned char)zName[0]) && zName[0]!='_' ) return '"'; |
for(i=0; zName[i]; i++){ |
if( !isalnum((unsigned char)zName[i]) && zName[i]!='_' ) return '"'; |
} |
return sqlite3_keyword_check(zName, i) ? '"' : 0; |
} |
|
/* |
** Construct a fake object name and column list to describe the structure |
** of the view, virtual table, or table valued function zSchema.zName. |
*/ |
static char *shellFakeSchema( |
sqlite3 *db, /* The database connection containing the vtab */ |
const char *zSchema, /* Schema of the database holding the vtab */ |
const char *zName /* The name of the virtual table */ |
){ |
sqlite3_stmt *pStmt = 0; |
char *zSql; |
ShellText s; |
char cQuote; |
char *zDiv = "("; |
int nRow = 0; |
|
zSql = sqlite3_mprintf("PRAGMA \"%w\".table_info=%Q;", |
zSchema ? zSchema : "main", zName); |
sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
initText(&s); |
if( zSchema ){ |
cQuote = quoteChar(zSchema); |
if( cQuote && sqlite3_stricmp(zSchema,"temp")==0 ) cQuote = 0; |
appendText(&s, zSchema, cQuote); |
appendText(&s, ".", 0); |
} |
cQuote = quoteChar(zName); |
appendText(&s, zName, cQuote); |
while( sqlite3_step(pStmt)==SQLITE_ROW ){ |
const char *zCol = (const char*)sqlite3_column_text(pStmt, 1); |
nRow++; |
appendText(&s, zDiv, 0); |
zDiv = ","; |
cQuote = quoteChar(zCol); |
appendText(&s, zCol, cQuote); |
} |
appendText(&s, ")", 0); |
sqlite3_finalize(pStmt); |
if( nRow==0 ){ |
freeText(&s); |
s.z = 0; |
} |
return s.z; |
} |
|
/* |
** SQL function: shell_module_schema(X) |
** |
** Return a fake schema for the table-valued function or eponymous virtual |
** table X. |
*/ |
static void shellModuleSchema( |
sqlite3_context *pCtx, |
int nVal, |
sqlite3_value **apVal |
){ |
const char *zName = (const char*)sqlite3_value_text(apVal[0]); |
char *zFake = shellFakeSchema(sqlite3_context_db_handle(pCtx), 0, zName); |
UNUSED_PARAMETER(nVal); |
if( zFake ){ |
sqlite3_result_text(pCtx, sqlite3_mprintf("/* %s */", zFake), |
-1, sqlite3_free); |
free(zFake); |
} |
} |
|
/* |
** SQL function: shell_add_schema(S,X) |
** |
** Add the schema name X to the CREATE statement in S and return the result. |
** Examples: |
** |
** CREATE TABLE t1(x) -> CREATE TABLE xyz.t1(x); |
** |
** Also works on |
** |
** CREATE INDEX |
** CREATE UNIQUE INDEX |
** CREATE VIEW |
** CREATE TRIGGER |
** CREATE VIRTUAL TABLE |
** |
** This UDF is used by the .schema command to insert the schema name of |
** attached databases into the middle of the sqlite_schema.sql field. |
*/ |
static void shellAddSchemaName( |
sqlite3_context *pCtx, |
int nVal, |
sqlite3_value **apVal |
){ |
static const char *aPrefix[] = { |
"TABLE", |
"INDEX", |
"UNIQUE INDEX", |
"VIEW", |
"TRIGGER", |
"VIRTUAL TABLE" |
}; |
int i = 0; |
const char *zIn = (const char*)sqlite3_value_text(apVal[0]); |
const char *zSchema = (const char*)sqlite3_value_text(apVal[1]); |
const char *zName = (const char*)sqlite3_value_text(apVal[2]); |
sqlite3 *db = sqlite3_context_db_handle(pCtx); |
UNUSED_PARAMETER(nVal); |
if( zIn!=0 && strncmp(zIn, "CREATE ", 7)==0 ){ |
for(i=0; i<(int)(sizeof(aPrefix)/sizeof(aPrefix[0])); i++){ |
int n = strlen30(aPrefix[i]); |
if( strncmp(zIn+7, aPrefix[i], n)==0 && zIn[n+7]==' ' ){ |
char *z = 0; |
char *zFake = 0; |
if( zSchema ){ |
char cQuote = quoteChar(zSchema); |
if( cQuote && sqlite3_stricmp(zSchema,"temp")!=0 ){ |
z = sqlite3_mprintf("%.*s \"%w\".%s", n+7, zIn, zSchema, zIn+n+8); |
}else{ |
z = sqlite3_mprintf("%.*s %s.%s", n+7, zIn, zSchema, zIn+n+8); |
} |
} |
if( zName |
&& aPrefix[i][0]=='V' |
&& (zFake = shellFakeSchema(db, zSchema, zName))!=0 |
){ |
if( z==0 ){ |
z = sqlite3_mprintf("%s\n/* %s */", zIn, zFake); |
}else{ |
z = sqlite3_mprintf("%z\n/* %s */", z, zFake); |
} |
free(zFake); |
} |
if( z ){ |
sqlite3_result_text(pCtx, z, -1, sqlite3_free); |
return; |
} |
} |
} |
} |
sqlite3_result_value(pCtx, apVal[0]); |
} |
|
/* |
** The source code for several run-time loadable extensions is inserted |
** below by the ../tool/mkshellc.tcl script. Before processing that included |
** code, we need to override some macros to make the included program code |
** work here in the middle of this regular program. |
*/ |
#define SQLITE_EXTENSION_INIT1 |
#define SQLITE_EXTENSION_INIT2(X) (void)(X) |
|
#if defined(_WIN32) && defined(_MSC_VER) |
/************************* Begin test_windirent.h ******************/ |
/* |
** 2015 November 30 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
************************************************************************* |
** This file contains declarations for most of the opendir() family of |
** POSIX functions on Win32 using the MSVCRT. |
*/ |
|
#if defined(_WIN32) && defined(_MSC_VER) && !defined(SQLITE_WINDIRENT_H) |
#define SQLITE_WINDIRENT_H |
|
/* |
** We need several data types from the Windows SDK header. |
*/ |
|
#ifndef WIN32_LEAN_AND_MEAN |
#define WIN32_LEAN_AND_MEAN |
#endif |
|
//#include "windows.h" |
|
/* |
** We need several support functions from the SQLite core. |
*/ |
|
/* #include "sqlite3.h" */ |
|
/* |
** We need several things from the ANSI and MSVCRT headers. |
*/ |
|
#include <stdio.h> |
#include <stdlib.h> |
#include <errno.h> |
#include <io.h> |
#include <limits.h> |
#include <sys/types.h> |
#include <sys/stat.h> |
|
/* |
** We may need several defines that should have been in "sys/stat.h". |
*/ |
|
#ifndef S_ISREG |
#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) |
#endif |
|
#ifndef S_ISDIR |
#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) |
#endif |
|
#ifndef S_ISLNK |
#define S_ISLNK(mode) (0) |
#endif |
|
/* |
** We may need to provide the "mode_t" type. |
*/ |
|
#ifndef MODE_T_DEFINED |
#define MODE_T_DEFINED |
typedef unsigned short mode_t; |
#endif |
|
/* |
** We may need to provide the "ino_t" type. |
*/ |
|
#ifndef INO_T_DEFINED |
#define INO_T_DEFINED |
typedef unsigned short ino_t; |
#endif |
|
/* |
** We need to define "NAME_MAX" if it was not present in "limits.h". |
*/ |
|
#ifndef NAME_MAX |
# ifdef FILENAME_MAX |
# define NAME_MAX (FILENAME_MAX) |
# else |
# define NAME_MAX (260) |
# endif |
#endif |
|
/* |
** We need to define "NULL_INTPTR_T" and "BAD_INTPTR_T". |
*/ |
|
#ifndef NULL_INTPTR_T |
# define NULL_INTPTR_T ((intptr_t)(0)) |
#endif |
|
#ifndef BAD_INTPTR_T |
# define BAD_INTPTR_T ((intptr_t)(-1)) |
#endif |
|
/* |
** We need to provide the necessary structures and related types. |
*/ |
|
#ifndef DIRENT_DEFINED |
#define DIRENT_DEFINED |
typedef struct DIRENT DIRENT; |
typedef DIRENT *LPDIRENT; |
struct DIRENT { |
ino_t d_ino; /* Sequence number, do not use. */ |
unsigned d_attributes; /* Win32 file attributes. */ |
char d_name[NAME_MAX + 1]; /* Name within the directory. */ |
}; |
#endif |
|
#ifndef DIR_DEFINED |
#define DIR_DEFINED |
typedef struct DIR DIR; |
typedef DIR *LPDIR; |
struct DIR { |
intptr_t d_handle; /* Value returned by "_findfirst". */ |
DIRENT d_first; /* DIRENT constructed based on "_findfirst". */ |
DIRENT d_next; /* DIRENT constructed based on "_findnext". */ |
}; |
#endif |
|
/* |
** Provide a macro, for use by the implementation, to determine if a |
** particular directory entry should be skipped over when searching for |
** the next directory entry that should be returned by the readdir() or |
** readdir_r() functions. |
*/ |
|
#ifndef is_filtered |
# define is_filtered(a) ((((a).attrib)&_A_HIDDEN) || (((a).attrib)&_A_SYSTEM)) |
#endif |
|
/* |
** Provide the function prototype for the POSIX compatiable getenv() |
** function. This function is not thread-safe. |
*/ |
|
extern const char *windirent_getenv(const char *name); |
|
/* |
** Finally, we can provide the function prototypes for the opendir(), |
** readdir(), readdir_r(), and closedir() POSIX functions. |
*/ |
|
extern LPDIR opendir(const char *dirname); |
extern LPDIRENT readdir(LPDIR dirp); |
extern INT readdir_r(LPDIR dirp, LPDIRENT entry, LPDIRENT *result); |
extern INT closedir(LPDIR dirp); |
|
#endif /* defined(WIN32) && defined(_MSC_VER) */ |
|
/************************* End test_windirent.h ********************/ |
/************************* Begin test_windirent.c ******************/ |
/* |
** 2015 November 30 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
************************************************************************* |
** This file contains code to implement most of the opendir() family of |
** POSIX functions on Win32 using the MSVCRT. |
*/ |
|
#if defined(_WIN32) && defined(_MSC_VER) |
/* #include "test_windirent.h" */ |
|
/* |
** Implementation of the POSIX getenv() function using the Win32 API. |
** This function is not thread-safe. |
*/ |
const char *windirent_getenv( |
const char *name |
){ |
static char value[32768]; /* Maximum length, per MSDN */ |
DWORD dwSize = sizeof(value) / sizeof(char); /* Size in chars */ |
DWORD dwRet; /* Value returned by GetEnvironmentVariableA() */ |
|
memset(value, 0, sizeof(value)); |
dwRet = GetEnvironmentVariableA(name, value, dwSize); |
if( dwRet==0 || dwRet>dwSize ){ |
/* |
** The function call to GetEnvironmentVariableA() failed -OR- |
** the buffer is not large enough. Either way, return NULL. |
*/ |
return 0; |
}else{ |
/* |
** The function call to GetEnvironmentVariableA() succeeded |
** -AND- the buffer contains the entire value. |
*/ |
return value; |
} |
} |
|
/* |
** Implementation of the POSIX opendir() function using the MSVCRT. |
*/ |
LPDIR opendir( |
const char *dirname |
){ |
struct _finddata_t data; |
LPDIR dirp = (LPDIR)sqlite3_malloc(sizeof(DIR)); |
SIZE_T namesize = sizeof(data.name) / sizeof(data.name[0]); |
|
if( dirp==NULL ) return NULL; |
memset(dirp, 0, sizeof(DIR)); |
|
/* TODO: Remove this if Unix-style root paths are not used. */ |
if( sqlite3_stricmp(dirname, "/")==0 ){ |
dirname = windirent_getenv("SystemDrive"); |
} |
|
memset(&data, 0, sizeof(struct _finddata_t)); |
_snprintf(data.name, namesize, "%s\\*", dirname); |
dirp->d_handle = _findfirst(data.name, &data); |
|
if( dirp->d_handle==BAD_INTPTR_T ){ |
closedir(dirp); |
return NULL; |
} |
|
/* TODO: Remove this block to allow hidden and/or system files. */ |
if( is_filtered(data) ){ |
next: |
|
memset(&data, 0, sizeof(struct _finddata_t)); |
if( _findnext(dirp->d_handle, &data)==-1 ){ |
closedir(dirp); |
return NULL; |
} |
|
/* TODO: Remove this block to allow hidden and/or system files. */ |
if( is_filtered(data) ) goto next; |
} |
|
dirp->d_first.d_attributes = data.attrib; |
strncpy(dirp->d_first.d_name, data.name, NAME_MAX); |
dirp->d_first.d_name[NAME_MAX] = '\0'; |
|
return dirp; |
} |
|
/* |
** Implementation of the POSIX readdir() function using the MSVCRT. |
*/ |
LPDIRENT readdir( |
LPDIR dirp |
){ |
struct _finddata_t data; |
|
if( dirp==NULL ) return NULL; |
|
if( dirp->d_first.d_ino==0 ){ |
dirp->d_first.d_ino++; |
dirp->d_next.d_ino++; |
|
return &dirp->d_first; |
} |
|
next: |
|
memset(&data, 0, sizeof(struct _finddata_t)); |
if( _findnext(dirp->d_handle, &data)==-1 ) return NULL; |
|
/* TODO: Remove this block to allow hidden and/or system files. */ |
if( is_filtered(data) ) goto next; |
|
dirp->d_next.d_ino++; |
dirp->d_next.d_attributes = data.attrib; |
strncpy(dirp->d_next.d_name, data.name, NAME_MAX); |
dirp->d_next.d_name[NAME_MAX] = '\0'; |
|
return &dirp->d_next; |
} |
|
/* |
** Implementation of the POSIX readdir_r() function using the MSVCRT. |
*/ |
INT readdir_r( |
LPDIR dirp, |
LPDIRENT entry, |
LPDIRENT *result |
){ |
struct _finddata_t data; |
|
if( dirp==NULL ) return EBADF; |
|
if( dirp->d_first.d_ino==0 ){ |
dirp->d_first.d_ino++; |
dirp->d_next.d_ino++; |
|
entry->d_ino = dirp->d_first.d_ino; |
entry->d_attributes = dirp->d_first.d_attributes; |
strncpy(entry->d_name, dirp->d_first.d_name, NAME_MAX); |
entry->d_name[NAME_MAX] = '\0'; |
|
*result = entry; |
return 0; |
} |
|
next: |
|
memset(&data, 0, sizeof(struct _finddata_t)); |
if( _findnext(dirp->d_handle, &data)==-1 ){ |
*result = NULL; |
return ENOENT; |
} |
|
/* TODO: Remove this block to allow hidden and/or system files. */ |
if( is_filtered(data) ) goto next; |
|
entry->d_ino = (ino_t)-1; /* not available */ |
entry->d_attributes = data.attrib; |
strncpy(entry->d_name, data.name, NAME_MAX); |
entry->d_name[NAME_MAX] = '\0'; |
|
*result = entry; |
return 0; |
} |
|
/* |
** Implementation of the POSIX closedir() function using the MSVCRT. |
*/ |
INT closedir( |
LPDIR dirp |
){ |
INT result = 0; |
|
if( dirp==NULL ) return EINVAL; |
|
if( dirp->d_handle!=NULL_INTPTR_T && dirp->d_handle!=BAD_INTPTR_T ){ |
result = _findclose(dirp->d_handle); |
} |
|
sqlite3_free(dirp); |
return result; |
} |
|
#endif /* defined(WIN32) && defined(_MSC_VER) */ |
|
/************************* End test_windirent.c ********************/ |
#define dirent DIRENT |
#endif |
/************************* Begin ../ext/misc/shathree.c ******************/ |
/* |
** 2017-03-08 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** This SQLite extension implements functions that compute SHA3 hashes. |
** Two SQL functions are implemented: |
** |
** sha3(X,SIZE) |
** sha3_query(Y,SIZE) |
** |
** The sha3(X) function computes the SHA3 hash of the input X, or NULL if |
** X is NULL. |
** |
** The sha3_query(Y) function evalutes all queries in the SQL statements of Y |
** and returns a hash of their results. |
** |
** The SIZE argument is optional. If omitted, the SHA3-256 hash algorithm |
** is used. If SIZE is included it must be one of the integers 224, 256, |
** 384, or 512, to determine SHA3 hash variant that is computed. |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <assert.h> |
#include <string.h> |
#include <stdarg.h> |
|
#ifndef SQLITE_AMALGAMATION |
/* typedef sqlite3_uint64 u64; */ |
#endif /* SQLITE_AMALGAMATION */ |
|
/****************************************************************************** |
** The Hash Engine |
*/ |
/* |
** Macros to determine whether the machine is big or little endian, |
** and whether or not that determination is run-time or compile-time. |
** |
** For best performance, an attempt is made to guess at the byte-order |
** using C-preprocessor macros. If that is unsuccessful, or if |
** -DSHA3_BYTEORDER=0 is set, then byte-order is determined |
** at run-time. |
*/ |
#ifndef SHA3_BYTEORDER |
# if defined(i386) || defined(__i386__) || defined(_M_IX86) || \ |
defined(__x86_64) || defined(__x86_64__) || defined(_M_X64) || \ |
defined(_M_AMD64) || defined(_M_ARM) || defined(__x86) || \ |
defined(__arm__) |
# define SHA3_BYTEORDER 1234 |
# elif defined(sparc) || defined(__ppc__) |
# define SHA3_BYTEORDER 4321 |
# else |
# define SHA3_BYTEORDER 0 |
# endif |
#endif |
|
|
/* |
** State structure for a SHA3 hash in progress |
*/ |
typedef struct SHA3Context SHA3Context; |
struct SHA3Context { |
union { |
u64 s[25]; /* Keccak state. 5x5 lines of 64 bits each */ |
unsigned char x[1600]; /* ... or 1600 bytes */ |
} u; |
unsigned nRate; /* Bytes of input accepted per Keccak iteration */ |
unsigned nLoaded; /* Input bytes loaded into u.x[] so far this cycle */ |
unsigned ixMask; /* Insert next input into u.x[nLoaded^ixMask]. */ |
}; |
|
/* |
** A single step of the Keccak mixing function for a 1600-bit state |
*/ |
static void KeccakF1600Step(SHA3Context *p){ |
int i; |
u64 b0, b1, b2, b3, b4; |
u64 c0, c1, c2, c3, c4; |
u64 d0, d1, d2, d3, d4; |
static const u64 RC[] = { |
0x0000000000000001ULL, 0x0000000000008082ULL, |
0x800000000000808aULL, 0x8000000080008000ULL, |
0x000000000000808bULL, 0x0000000080000001ULL, |
0x8000000080008081ULL, 0x8000000000008009ULL, |
0x000000000000008aULL, 0x0000000000000088ULL, |
0x0000000080008009ULL, 0x000000008000000aULL, |
0x000000008000808bULL, 0x800000000000008bULL, |
0x8000000000008089ULL, 0x8000000000008003ULL, |
0x8000000000008002ULL, 0x8000000000000080ULL, |
0x000000000000800aULL, 0x800000008000000aULL, |
0x8000000080008081ULL, 0x8000000000008080ULL, |
0x0000000080000001ULL, 0x8000000080008008ULL |
}; |
# define a00 (p->u.s[0]) |
# define a01 (p->u.s[1]) |
# define a02 (p->u.s[2]) |
# define a03 (p->u.s[3]) |
# define a04 (p->u.s[4]) |
# define a10 (p->u.s[5]) |
# define a11 (p->u.s[6]) |
# define a12 (p->u.s[7]) |
# define a13 (p->u.s[8]) |
# define a14 (p->u.s[9]) |
# define a20 (p->u.s[10]) |
# define a21 (p->u.s[11]) |
# define a22 (p->u.s[12]) |
# define a23 (p->u.s[13]) |
# define a24 (p->u.s[14]) |
# define a30 (p->u.s[15]) |
# define a31 (p->u.s[16]) |
# define a32 (p->u.s[17]) |
# define a33 (p->u.s[18]) |
# define a34 (p->u.s[19]) |
# define a40 (p->u.s[20]) |
# define a41 (p->u.s[21]) |
# define a42 (p->u.s[22]) |
# define a43 (p->u.s[23]) |
# define a44 (p->u.s[24]) |
# define ROL64(a,x) ((a<<x)|(a>>(64-x))) |
|
for(i=0; i<24; i+=4){ |
c0 = a00^a10^a20^a30^a40; |
c1 = a01^a11^a21^a31^a41; |
c2 = a02^a12^a22^a32^a42; |
c3 = a03^a13^a23^a33^a43; |
c4 = a04^a14^a24^a34^a44; |
d0 = c4^ROL64(c1, 1); |
d1 = c0^ROL64(c2, 1); |
d2 = c1^ROL64(c3, 1); |
d3 = c2^ROL64(c4, 1); |
d4 = c3^ROL64(c0, 1); |
|
b0 = (a00^d0); |
b1 = ROL64((a11^d1), 44); |
b2 = ROL64((a22^d2), 43); |
b3 = ROL64((a33^d3), 21); |
b4 = ROL64((a44^d4), 14); |
a00 = b0 ^((~b1)& b2 ); |
a00 ^= RC[i]; |
a11 = b1 ^((~b2)& b3 ); |
a22 = b2 ^((~b3)& b4 ); |
a33 = b3 ^((~b4)& b0 ); |
a44 = b4 ^((~b0)& b1 ); |
|
b2 = ROL64((a20^d0), 3); |
b3 = ROL64((a31^d1), 45); |
b4 = ROL64((a42^d2), 61); |
b0 = ROL64((a03^d3), 28); |
b1 = ROL64((a14^d4), 20); |
a20 = b0 ^((~b1)& b2 ); |
a31 = b1 ^((~b2)& b3 ); |
a42 = b2 ^((~b3)& b4 ); |
a03 = b3 ^((~b4)& b0 ); |
a14 = b4 ^((~b0)& b1 ); |
|
b4 = ROL64((a40^d0), 18); |
b0 = ROL64((a01^d1), 1); |
b1 = ROL64((a12^d2), 6); |
b2 = ROL64((a23^d3), 25); |
b3 = ROL64((a34^d4), 8); |
a40 = b0 ^((~b1)& b2 ); |
a01 = b1 ^((~b2)& b3 ); |
a12 = b2 ^((~b3)& b4 ); |
a23 = b3 ^((~b4)& b0 ); |
a34 = b4 ^((~b0)& b1 ); |
|
b1 = ROL64((a10^d0), 36); |
b2 = ROL64((a21^d1), 10); |
b3 = ROL64((a32^d2), 15); |
b4 = ROL64((a43^d3), 56); |
b0 = ROL64((a04^d4), 27); |
a10 = b0 ^((~b1)& b2 ); |
a21 = b1 ^((~b2)& b3 ); |
a32 = b2 ^((~b3)& b4 ); |
a43 = b3 ^((~b4)& b0 ); |
a04 = b4 ^((~b0)& b1 ); |
|
b3 = ROL64((a30^d0), 41); |
b4 = ROL64((a41^d1), 2); |
b0 = ROL64((a02^d2), 62); |
b1 = ROL64((a13^d3), 55); |
b2 = ROL64((a24^d4), 39); |
a30 = b0 ^((~b1)& b2 ); |
a41 = b1 ^((~b2)& b3 ); |
a02 = b2 ^((~b3)& b4 ); |
a13 = b3 ^((~b4)& b0 ); |
a24 = b4 ^((~b0)& b1 ); |
|
c0 = a00^a20^a40^a10^a30; |
c1 = a11^a31^a01^a21^a41; |
c2 = a22^a42^a12^a32^a02; |
c3 = a33^a03^a23^a43^a13; |
c4 = a44^a14^a34^a04^a24; |
d0 = c4^ROL64(c1, 1); |
d1 = c0^ROL64(c2, 1); |
d2 = c1^ROL64(c3, 1); |
d3 = c2^ROL64(c4, 1); |
d4 = c3^ROL64(c0, 1); |
|
b0 = (a00^d0); |
b1 = ROL64((a31^d1), 44); |
b2 = ROL64((a12^d2), 43); |
b3 = ROL64((a43^d3), 21); |
b4 = ROL64((a24^d4), 14); |
a00 = b0 ^((~b1)& b2 ); |
a00 ^= RC[i+1]; |
a31 = b1 ^((~b2)& b3 ); |
a12 = b2 ^((~b3)& b4 ); |
a43 = b3 ^((~b4)& b0 ); |
a24 = b4 ^((~b0)& b1 ); |
|
b2 = ROL64((a40^d0), 3); |
b3 = ROL64((a21^d1), 45); |
b4 = ROL64((a02^d2), 61); |
b0 = ROL64((a33^d3), 28); |
b1 = ROL64((a14^d4), 20); |
a40 = b0 ^((~b1)& b2 ); |
a21 = b1 ^((~b2)& b3 ); |
a02 = b2 ^((~b3)& b4 ); |
a33 = b3 ^((~b4)& b0 ); |
a14 = b4 ^((~b0)& b1 ); |
|
b4 = ROL64((a30^d0), 18); |
b0 = ROL64((a11^d1), 1); |
b1 = ROL64((a42^d2), 6); |
b2 = ROL64((a23^d3), 25); |
b3 = ROL64((a04^d4), 8); |
a30 = b0 ^((~b1)& b2 ); |
a11 = b1 ^((~b2)& b3 ); |
a42 = b2 ^((~b3)& b4 ); |
a23 = b3 ^((~b4)& b0 ); |
a04 = b4 ^((~b0)& b1 ); |
|
b1 = ROL64((a20^d0), 36); |
b2 = ROL64((a01^d1), 10); |
b3 = ROL64((a32^d2), 15); |
b4 = ROL64((a13^d3), 56); |
b0 = ROL64((a44^d4), 27); |
a20 = b0 ^((~b1)& b2 ); |
a01 = b1 ^((~b2)& b3 ); |
a32 = b2 ^((~b3)& b4 ); |
a13 = b3 ^((~b4)& b0 ); |
a44 = b4 ^((~b0)& b1 ); |
|
b3 = ROL64((a10^d0), 41); |
b4 = ROL64((a41^d1), 2); |
b0 = ROL64((a22^d2), 62); |
b1 = ROL64((a03^d3), 55); |
b2 = ROL64((a34^d4), 39); |
a10 = b0 ^((~b1)& b2 ); |
a41 = b1 ^((~b2)& b3 ); |
a22 = b2 ^((~b3)& b4 ); |
a03 = b3 ^((~b4)& b0 ); |
a34 = b4 ^((~b0)& b1 ); |
|
c0 = a00^a40^a30^a20^a10; |
c1 = a31^a21^a11^a01^a41; |
c2 = a12^a02^a42^a32^a22; |
c3 = a43^a33^a23^a13^a03; |
c4 = a24^a14^a04^a44^a34; |
d0 = c4^ROL64(c1, 1); |
d1 = c0^ROL64(c2, 1); |
d2 = c1^ROL64(c3, 1); |
d3 = c2^ROL64(c4, 1); |
d4 = c3^ROL64(c0, 1); |
|
b0 = (a00^d0); |
b1 = ROL64((a21^d1), 44); |
b2 = ROL64((a42^d2), 43); |
b3 = ROL64((a13^d3), 21); |
b4 = ROL64((a34^d4), 14); |
a00 = b0 ^((~b1)& b2 ); |
a00 ^= RC[i+2]; |
a21 = b1 ^((~b2)& b3 ); |
a42 = b2 ^((~b3)& b4 ); |
a13 = b3 ^((~b4)& b0 ); |
a34 = b4 ^((~b0)& b1 ); |
|
b2 = ROL64((a30^d0), 3); |
b3 = ROL64((a01^d1), 45); |
b4 = ROL64((a22^d2), 61); |
b0 = ROL64((a43^d3), 28); |
b1 = ROL64((a14^d4), 20); |
a30 = b0 ^((~b1)& b2 ); |
a01 = b1 ^((~b2)& b3 ); |
a22 = b2 ^((~b3)& b4 ); |
a43 = b3 ^((~b4)& b0 ); |
a14 = b4 ^((~b0)& b1 ); |
|
b4 = ROL64((a10^d0), 18); |
b0 = ROL64((a31^d1), 1); |
b1 = ROL64((a02^d2), 6); |
b2 = ROL64((a23^d3), 25); |
b3 = ROL64((a44^d4), 8); |
a10 = b0 ^((~b1)& b2 ); |
a31 = b1 ^((~b2)& b3 ); |
a02 = b2 ^((~b3)& b4 ); |
a23 = b3 ^((~b4)& b0 ); |
a44 = b4 ^((~b0)& b1 ); |
|
b1 = ROL64((a40^d0), 36); |
b2 = ROL64((a11^d1), 10); |
b3 = ROL64((a32^d2), 15); |
b4 = ROL64((a03^d3), 56); |
b0 = ROL64((a24^d4), 27); |
a40 = b0 ^((~b1)& b2 ); |
a11 = b1 ^((~b2)& b3 ); |
a32 = b2 ^((~b3)& b4 ); |
a03 = b3 ^((~b4)& b0 ); |
a24 = b4 ^((~b0)& b1 ); |
|
b3 = ROL64((a20^d0), 41); |
b4 = ROL64((a41^d1), 2); |
b0 = ROL64((a12^d2), 62); |
b1 = ROL64((a33^d3), 55); |
b2 = ROL64((a04^d4), 39); |
a20 = b0 ^((~b1)& b2 ); |
a41 = b1 ^((~b2)& b3 ); |
a12 = b2 ^((~b3)& b4 ); |
a33 = b3 ^((~b4)& b0 ); |
a04 = b4 ^((~b0)& b1 ); |
|
c0 = a00^a30^a10^a40^a20; |
c1 = a21^a01^a31^a11^a41; |
c2 = a42^a22^a02^a32^a12; |
c3 = a13^a43^a23^a03^a33; |
c4 = a34^a14^a44^a24^a04; |
d0 = c4^ROL64(c1, 1); |
d1 = c0^ROL64(c2, 1); |
d2 = c1^ROL64(c3, 1); |
d3 = c2^ROL64(c4, 1); |
d4 = c3^ROL64(c0, 1); |
|
b0 = (a00^d0); |
b1 = ROL64((a01^d1), 44); |
b2 = ROL64((a02^d2), 43); |
b3 = ROL64((a03^d3), 21); |
b4 = ROL64((a04^d4), 14); |
a00 = b0 ^((~b1)& b2 ); |
a00 ^= RC[i+3]; |
a01 = b1 ^((~b2)& b3 ); |
a02 = b2 ^((~b3)& b4 ); |
a03 = b3 ^((~b4)& b0 ); |
a04 = b4 ^((~b0)& b1 ); |
|
b2 = ROL64((a10^d0), 3); |
b3 = ROL64((a11^d1), 45); |
b4 = ROL64((a12^d2), 61); |
b0 = ROL64((a13^d3), 28); |
b1 = ROL64((a14^d4), 20); |
a10 = b0 ^((~b1)& b2 ); |
a11 = b1 ^((~b2)& b3 ); |
a12 = b2 ^((~b3)& b4 ); |
a13 = b3 ^((~b4)& b0 ); |
a14 = b4 ^((~b0)& b1 ); |
|
b4 = ROL64((a20^d0), 18); |
b0 = ROL64((a21^d1), 1); |
b1 = ROL64((a22^d2), 6); |
b2 = ROL64((a23^d3), 25); |
b3 = ROL64((a24^d4), 8); |
a20 = b0 ^((~b1)& b2 ); |
a21 = b1 ^((~b2)& b3 ); |
a22 = b2 ^((~b3)& b4 ); |
a23 = b3 ^((~b4)& b0 ); |
a24 = b4 ^((~b0)& b1 ); |
|
b1 = ROL64((a30^d0), 36); |
b2 = ROL64((a31^d1), 10); |
b3 = ROL64((a32^d2), 15); |
b4 = ROL64((a33^d3), 56); |
b0 = ROL64((a34^d4), 27); |
a30 = b0 ^((~b1)& b2 ); |
a31 = b1 ^((~b2)& b3 ); |
a32 = b2 ^((~b3)& b4 ); |
a33 = b3 ^((~b4)& b0 ); |
a34 = b4 ^((~b0)& b1 ); |
|
b3 = ROL64((a40^d0), 41); |
b4 = ROL64((a41^d1), 2); |
b0 = ROL64((a42^d2), 62); |
b1 = ROL64((a43^d3), 55); |
b2 = ROL64((a44^d4), 39); |
a40 = b0 ^((~b1)& b2 ); |
a41 = b1 ^((~b2)& b3 ); |
a42 = b2 ^((~b3)& b4 ); |
a43 = b3 ^((~b4)& b0 ); |
a44 = b4 ^((~b0)& b1 ); |
} |
} |
|
/* |
** Initialize a new hash. iSize determines the size of the hash |
** in bits and should be one of 224, 256, 384, or 512. Or iSize |
** can be zero to use the default hash size of 256 bits. |
*/ |
static void SHA3Init(SHA3Context *p, int iSize){ |
memset(p, 0, sizeof(*p)); |
if( iSize>=128 && iSize<=512 ){ |
p->nRate = (1600 - ((iSize + 31)&~31)*2)/8; |
}else{ |
p->nRate = (1600 - 2*256)/8; |
} |
#if SHA3_BYTEORDER==1234 |
/* Known to be little-endian at compile-time. No-op */ |
#elif SHA3_BYTEORDER==4321 |
p->ixMask = 7; /* Big-endian */ |
#else |
{ |
static unsigned int one = 1; |
if( 1==*(unsigned char*)&one ){ |
/* Little endian. No byte swapping. */ |
p->ixMask = 0; |
}else{ |
/* Big endian. Byte swap. */ |
p->ixMask = 7; |
} |
} |
#endif |
} |
|
/* |
** Make consecutive calls to the SHA3Update function to add new content |
** to the hash |
*/ |
static void SHA3Update( |
SHA3Context *p, |
const unsigned char *aData, |
unsigned int nData |
){ |
unsigned int i = 0; |
#if SHA3_BYTEORDER==1234 |
if( (p->nLoaded % 8)==0 && ((aData - (const unsigned char*)0)&7)==0 ){ |
for(; i+7<nData; i+=8){ |
p->u.s[p->nLoaded/8] ^= *(u64*)&aData[i]; |
p->nLoaded += 8; |
if( p->nLoaded>=p->nRate ){ |
KeccakF1600Step(p); |
p->nLoaded = 0; |
} |
} |
} |
#endif |
for(; i<nData; i++){ |
#if SHA3_BYTEORDER==1234 |
p->u.x[p->nLoaded] ^= aData[i]; |
#elif SHA3_BYTEORDER==4321 |
p->u.x[p->nLoaded^0x07] ^= aData[i]; |
#else |
p->u.x[p->nLoaded^p->ixMask] ^= aData[i]; |
#endif |
p->nLoaded++; |
if( p->nLoaded==p->nRate ){ |
KeccakF1600Step(p); |
p->nLoaded = 0; |
} |
} |
} |
|
/* |
** After all content has been added, invoke SHA3Final() to compute |
** the final hash. The function returns a pointer to the binary |
** hash value. |
*/ |
static unsigned char *SHA3Final(SHA3Context *p){ |
unsigned int i; |
if( p->nLoaded==p->nRate-1 ){ |
const unsigned char c1 = 0x86; |
SHA3Update(p, &c1, 1); |
}else{ |
const unsigned char c2 = 0x06; |
const unsigned char c3 = 0x80; |
SHA3Update(p, &c2, 1); |
p->nLoaded = p->nRate - 1; |
SHA3Update(p, &c3, 1); |
} |
for(i=0; i<p->nRate; i++){ |
p->u.x[i+p->nRate] = p->u.x[i^p->ixMask]; |
} |
return &p->u.x[p->nRate]; |
} |
/* End of the hashing logic |
*****************************************************************************/ |
|
/* |
** Implementation of the sha3(X,SIZE) function. |
** |
** Return a BLOB which is the SIZE-bit SHA3 hash of X. The default |
** size is 256. If X is a BLOB, it is hashed as is. |
** For all other non-NULL types of input, X is converted into a UTF-8 string |
** and the string is hashed without the trailing 0x00 terminator. The hash |
** of a NULL value is NULL. |
*/ |
static void sha3Func( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
SHA3Context cx; |
int eType = sqlite3_value_type(argv[0]); |
int nByte = sqlite3_value_bytes(argv[0]); |
int iSize; |
if( argc==1 ){ |
iSize = 256; |
}else{ |
iSize = sqlite3_value_int(argv[1]); |
if( iSize!=224 && iSize!=256 && iSize!=384 && iSize!=512 ){ |
sqlite3_result_error(context, "SHA3 size should be one of: 224 256 " |
"384 512", -1); |
return; |
} |
} |
if( eType==SQLITE_NULL ) return; |
SHA3Init(&cx, iSize); |
if( eType==SQLITE_BLOB ){ |
SHA3Update(&cx, sqlite3_value_blob(argv[0]), nByte); |
}else{ |
SHA3Update(&cx, sqlite3_value_text(argv[0]), nByte); |
} |
sqlite3_result_blob(context, SHA3Final(&cx), iSize/8, SQLITE_TRANSIENT); |
} |
|
/* Compute a string using sqlite3_vsnprintf() with a maximum length |
** of 50 bytes and add it to the hash. |
*/ |
static void hash_step_vformat( |
SHA3Context *p, /* Add content to this context */ |
const char *zFormat, |
... |
){ |
va_list ap; |
int n; |
char zBuf[50]; |
va_start(ap, zFormat); |
sqlite3_vsnprintf(sizeof(zBuf),zBuf,zFormat,ap); |
va_end(ap); |
n = (int)strlen(zBuf); |
SHA3Update(p, (unsigned char*)zBuf, n); |
} |
|
/* |
** Implementation of the sha3_query(SQL,SIZE) function. |
** |
** This function compiles and runs the SQL statement(s) given in the |
** argument. The results are hashed using a SIZE-bit SHA3. The default |
** size is 256. |
** |
** The format of the byte stream that is hashed is summarized as follows: |
** |
** S<n>:<sql> |
** R |
** N |
** I<int> |
** F<ieee-float> |
** B<size>:<bytes> |
** T<size>:<text> |
** |
** <sql> is the original SQL text for each statement run and <n> is |
** the size of that text. The SQL text is UTF-8. A single R character |
** occurs before the start of each row. N means a NULL value. |
** I mean an 8-byte little-endian integer <int>. F is a floating point |
** number with an 8-byte little-endian IEEE floating point value <ieee-float>. |
** B means blobs of <size> bytes. T means text rendered as <size> |
** bytes of UTF-8. The <n> and <size> values are expressed as an ASCII |
** text integers. |
** |
** For each SQL statement in the X input, there is one S segment. Each |
** S segment is followed by zero or more R segments, one for each row in the |
** result set. After each R, there are one or more N, I, F, B, or T segments, |
** one for each column in the result set. Segments are concatentated directly |
** with no delimiters of any kind. |
*/ |
static void sha3QueryFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
sqlite3 *db = sqlite3_context_db_handle(context); |
const char *zSql = (const char*)sqlite3_value_text(argv[0]); |
sqlite3_stmt *pStmt = 0; |
int nCol; /* Number of columns in the result set */ |
int i; /* Loop counter */ |
int rc; |
int n; |
const char *z; |
SHA3Context cx; |
int iSize; |
|
if( argc==1 ){ |
iSize = 256; |
}else{ |
iSize = sqlite3_value_int(argv[1]); |
if( iSize!=224 && iSize!=256 && iSize!=384 && iSize!=512 ){ |
sqlite3_result_error(context, "SHA3 size should be one of: 224 256 " |
"384 512", -1); |
return; |
} |
} |
if( zSql==0 ) return; |
SHA3Init(&cx, iSize); |
while( zSql[0] ){ |
rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, &zSql); |
if( rc ){ |
char *zMsg = sqlite3_mprintf("error SQL statement [%s]: %s", |
zSql, sqlite3_errmsg(db)); |
sqlite3_finalize(pStmt); |
sqlite3_result_error(context, zMsg, -1); |
sqlite3_free(zMsg); |
return; |
} |
if( !sqlite3_stmt_readonly(pStmt) ){ |
char *zMsg = sqlite3_mprintf("non-query: [%s]", sqlite3_sql(pStmt)); |
sqlite3_finalize(pStmt); |
sqlite3_result_error(context, zMsg, -1); |
sqlite3_free(zMsg); |
return; |
} |
nCol = sqlite3_column_count(pStmt); |
z = sqlite3_sql(pStmt); |
if( z ){ |
n = (int)strlen(z); |
hash_step_vformat(&cx,"S%d:",n); |
SHA3Update(&cx,(unsigned char*)z,n); |
} |
|
/* Compute a hash over the result of the query */ |
while( SQLITE_ROW==sqlite3_step(pStmt) ){ |
SHA3Update(&cx,(const unsigned char*)"R",1); |
for(i=0; i<nCol; i++){ |
switch( sqlite3_column_type(pStmt,i) ){ |
case SQLITE_NULL: { |
SHA3Update(&cx, (const unsigned char*)"N",1); |
break; |
} |
case SQLITE_INTEGER: { |
sqlite3_uint64 u; |
int j; |
unsigned char x[9]; |
sqlite3_int64 v = sqlite3_column_int64(pStmt,i); |
memcpy(&u, &v, 8); |
for(j=8; j>=1; j--){ |
x[j] = u & 0xff; |
u >>= 8; |
} |
x[0] = 'I'; |
SHA3Update(&cx, x, 9); |
break; |
} |
case SQLITE_FLOAT: { |
sqlite3_uint64 u; |
int j; |
unsigned char x[9]; |
double r = sqlite3_column_double(pStmt,i); |
memcpy(&u, &r, 8); |
for(j=8; j>=1; j--){ |
x[j] = u & 0xff; |
u >>= 8; |
} |
x[0] = 'F'; |
SHA3Update(&cx,x,9); |
break; |
} |
case SQLITE_TEXT: { |
int n2 = sqlite3_column_bytes(pStmt, i); |
const unsigned char *z2 = sqlite3_column_text(pStmt, i); |
hash_step_vformat(&cx,"T%d:",n2); |
SHA3Update(&cx, z2, n2); |
break; |
} |
case SQLITE_BLOB: { |
int n2 = sqlite3_column_bytes(pStmt, i); |
const unsigned char *z2 = sqlite3_column_blob(pStmt, i); |
hash_step_vformat(&cx,"B%d:",n2); |
SHA3Update(&cx, z2, n2); |
break; |
} |
} |
} |
} |
sqlite3_finalize(pStmt); |
} |
sqlite3_result_blob(context, SHA3Final(&cx), iSize/8, SQLITE_TRANSIENT); |
} |
|
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_shathree_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
int rc = SQLITE_OK; |
SQLITE_EXTENSION_INIT2(pApi); |
(void)pzErrMsg; /* Unused parameter */ |
rc = sqlite3_create_function(db, "sha3", 1, |
SQLITE_UTF8 | SQLITE_INNOCUOUS | SQLITE_DETERMINISTIC, |
0, sha3Func, 0, 0); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_function(db, "sha3", 2, |
SQLITE_UTF8 | SQLITE_INNOCUOUS | SQLITE_DETERMINISTIC, |
0, sha3Func, 0, 0); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_function(db, "sha3_query", 1, |
SQLITE_UTF8 | SQLITE_DIRECTONLY, |
0, sha3QueryFunc, 0, 0); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_function(db, "sha3_query", 2, |
SQLITE_UTF8 | SQLITE_DIRECTONLY, |
0, sha3QueryFunc, 0, 0); |
} |
return rc; |
} |
|
/************************* End ../ext/misc/shathree.c ********************/ |
/************************* Begin ../ext/misc/fileio.c ******************/ |
/* |
** 2014-06-13 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** This SQLite extension implements SQL functions readfile() and |
** writefile(), and eponymous virtual type "fsdir". |
** |
** WRITEFILE(FILE, DATA [, MODE [, MTIME]]): |
** |
** If neither of the optional arguments is present, then this UDF |
** function writes blob DATA to file FILE. If successful, the number |
** of bytes written is returned. If an error occurs, NULL is returned. |
** |
** If the first option argument - MODE - is present, then it must |
** be passed an integer value that corresponds to a POSIX mode |
** value (file type + permissions, as returned in the stat.st_mode |
** field by the stat() system call). Three types of files may |
** be written/created: |
** |
** regular files: (mode & 0170000)==0100000 |
** symbolic links: (mode & 0170000)==0120000 |
** directories: (mode & 0170000)==0040000 |
** |
** For a directory, the DATA is ignored. For a symbolic link, it is |
** interpreted as text and used as the target of the link. For a |
** regular file, it is interpreted as a blob and written into the |
** named file. Regardless of the type of file, its permissions are |
** set to (mode & 0777) before returning. |
** |
** If the optional MTIME argument is present, then it is interpreted |
** as an integer - the number of seconds since the unix epoch. The |
** modification-time of the target file is set to this value before |
** returning. |
** |
** If three or more arguments are passed to this function and an |
** error is encountered, an exception is raised. |
** |
** READFILE(FILE): |
** |
** Read and return the contents of file FILE (type blob) from disk. |
** |
** FSDIR: |
** |
** Used as follows: |
** |
** SELECT * FROM fsdir($path [, $dir]); |
** |
** Parameter $path is an absolute or relative pathname. If the file that it |
** refers to does not exist, it is an error. If the path refers to a regular |
** file or symbolic link, it returns a single row. Or, if the path refers |
** to a directory, it returns one row for the directory, and one row for each |
** file within the hierarchy rooted at $path. |
** |
** Each row has the following columns: |
** |
** name: Path to file or directory (text value). |
** mode: Value of stat.st_mode for directory entry (an integer). |
** mtime: Value of stat.st_mtime for directory entry (an integer). |
** data: For a regular file, a blob containing the file data. For a |
** symlink, a text value containing the text of the link. For a |
** directory, NULL. |
** |
** If a non-NULL value is specified for the optional $dir parameter and |
** $path is a relative path, then $path is interpreted relative to $dir. |
** And the paths returned in the "name" column of the table are also |
** relative to directory $dir. |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <stdio.h> |
#include <string.h> |
#include <assert.h> |
|
#include <sys/types.h> |
#include <sys/stat.h> |
#include <fcntl.h> |
#if !defined(_WIN32) && !defined(WIN32) |
# include <unistd.h> |
# include <dirent.h> |
# include <utime.h> |
# include <sys/time.h> |
#else |
# include "windows.h" |
# include <io.h> |
# include <direct.h> |
/* # include "test_windirent.h" */ |
# define dirent DIRENT |
# ifndef chmod |
# define chmod _chmod |
# endif |
# ifndef stat |
# define stat _stat |
# endif |
# define mkdir(path,mode) _mkdir(path) |
# define lstat(path,buf) stat(path,buf) |
#endif |
#include <time.h> |
#include <errno.h> |
|
|
/* |
** Structure of the fsdir() table-valued function |
*/ |
/* 0 1 2 3 4 5 */ |
#define FSDIR_SCHEMA "(name,mode,mtime,data,path HIDDEN,dir HIDDEN)" |
#define FSDIR_COLUMN_NAME 0 /* Name of the file */ |
#define FSDIR_COLUMN_MODE 1 /* Access mode */ |
#define FSDIR_COLUMN_MTIME 2 /* Last modification time */ |
#define FSDIR_COLUMN_DATA 3 /* File content */ |
#define FSDIR_COLUMN_PATH 4 /* Path to top of search */ |
#define FSDIR_COLUMN_DIR 5 /* Path is relative to this directory */ |
|
|
/* |
** Set the result stored by context ctx to a blob containing the |
** contents of file zName. Or, leave the result unchanged (NULL) |
** if the file does not exist or is unreadable. |
** |
** If the file exceeds the SQLite blob size limit, through an |
** SQLITE_TOOBIG error. |
** |
** Throw an SQLITE_IOERR if there are difficulties pulling the file |
** off of disk. |
*/ |
static void readFileContents(sqlite3_context *ctx, const char *zName){ |
FILE *in; |
sqlite3_int64 nIn; |
void *pBuf; |
sqlite3 *db; |
int mxBlob; |
|
in = fopen(zName, "rb"); |
if( in==0 ){ |
/* File does not exist or is unreadable. Leave the result set to NULL. */ |
return; |
} |
fseek(in, 0, SEEK_END); |
nIn = ftell(in); |
rewind(in); |
db = sqlite3_context_db_handle(ctx); |
mxBlob = sqlite3_limit(db, SQLITE_LIMIT_LENGTH, -1); |
if( nIn>mxBlob ){ |
sqlite3_result_error_code(ctx, SQLITE_TOOBIG); |
fclose(in); |
return; |
} |
pBuf = sqlite3_malloc64( nIn ? nIn : 1 ); |
if( pBuf==0 ){ |
sqlite3_result_error_nomem(ctx); |
fclose(in); |
return; |
} |
if( nIn==(sqlite3_int64)fread(pBuf, 1, (size_t)nIn, in) ){ |
sqlite3_result_blob64(ctx, pBuf, nIn, sqlite3_free); |
}else{ |
sqlite3_result_error_code(ctx, SQLITE_IOERR); |
sqlite3_free(pBuf); |
} |
fclose(in); |
} |
|
/* |
** Implementation of the "readfile(X)" SQL function. The entire content |
** of the file named X is read and returned as a BLOB. NULL is returned |
** if the file does not exist or is unreadable. |
*/ |
static void readfileFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
const char *zName; |
(void)(argc); /* Unused parameter */ |
zName = (const char*)sqlite3_value_text(argv[0]); |
if( zName==0 ) return; |
readFileContents(context, zName); |
} |
|
/* |
** Set the error message contained in context ctx to the results of |
** vprintf(zFmt, ...). |
*/ |
static void ctxErrorMsg(sqlite3_context *ctx, const char *zFmt, ...){ |
char *zMsg = 0; |
va_list ap; |
va_start(ap, zFmt); |
zMsg = sqlite3_vmprintf(zFmt, ap); |
sqlite3_result_error(ctx, zMsg, -1); |
sqlite3_free(zMsg); |
va_end(ap); |
} |
|
#if defined(_WIN32) |
/* |
** This function is designed to convert a Win32 FILETIME structure into the |
** number of seconds since the Unix Epoch (1970-01-01 00:00:00 UTC). |
*/ |
static sqlite3_uint64 fileTimeToUnixTime( |
LPFILETIME pFileTime |
){ |
SYSTEMTIME epochSystemTime; |
ULARGE_INTEGER epochIntervals; |
FILETIME epochFileTime; |
ULARGE_INTEGER fileIntervals; |
|
memset(&epochSystemTime, 0, sizeof(SYSTEMTIME)); |
epochSystemTime.wYear = 1970; |
epochSystemTime.wMonth = 1; |
epochSystemTime.wDay = 1; |
SystemTimeToFileTime(&epochSystemTime, &epochFileTime); |
epochIntervals.LowPart = epochFileTime.dwLowDateTime; |
epochIntervals.HighPart = epochFileTime.dwHighDateTime; |
|
fileIntervals.LowPart = pFileTime->dwLowDateTime; |
fileIntervals.HighPart = pFileTime->dwHighDateTime; |
|
return (fileIntervals.QuadPart - epochIntervals.QuadPart) / 10000000; |
} |
|
/* |
** This function attempts to normalize the time values found in the stat() |
** buffer to UTC. This is necessary on Win32, where the runtime library |
** appears to return these values as local times. |
*/ |
static void statTimesToUtc( |
const char *zPath, |
struct stat *pStatBuf |
){ |
HANDLE hFindFile; |
WIN32_FIND_DATAW fd; |
LPWSTR zUnicodeName; |
extern LPWSTR sqlite3_win32_utf8_to_unicode(const char*); |
zUnicodeName = sqlite3_win32_utf8_to_unicode(zPath); |
if( zUnicodeName ){ |
memset(&fd, 0, sizeof(WIN32_FIND_DATAW)); |
hFindFile = FindFirstFileW(zUnicodeName, &fd); |
if( hFindFile!=NULL ){ |
pStatBuf->st_ctime = (time_t)fileTimeToUnixTime(&fd.ftCreationTime); |
pStatBuf->st_atime = (time_t)fileTimeToUnixTime(&fd.ftLastAccessTime); |
pStatBuf->st_mtime = (time_t)fileTimeToUnixTime(&fd.ftLastWriteTime); |
FindClose(hFindFile); |
} |
sqlite3_free(zUnicodeName); |
} |
} |
#endif |
|
/* |
** This function is used in place of stat(). On Windows, special handling |
** is required in order for the included time to be returned as UTC. On all |
** other systems, this function simply calls stat(). |
*/ |
static int fileStat( |
const char *zPath, |
struct stat *pStatBuf |
){ |
#if defined(_WIN32) |
int rc = stat(zPath, pStatBuf); |
if( rc==0 ) statTimesToUtc(zPath, pStatBuf); |
return rc; |
#else |
return stat(zPath, pStatBuf); |
#endif |
} |
|
/* |
** This function is used in place of lstat(). On Windows, special handling |
** is required in order for the included time to be returned as UTC. On all |
** other systems, this function simply calls lstat(). |
*/ |
static int fileLinkStat( |
const char *zPath, |
struct stat *pStatBuf |
){ |
#if defined(_WIN32) |
int rc = lstat(zPath, pStatBuf); |
if( rc==0 ) statTimesToUtc(zPath, pStatBuf); |
return rc; |
#else |
return lstat(zPath, pStatBuf); |
#endif |
} |
|
/* |
** Argument zFile is the name of a file that will be created and/or written |
** by SQL function writefile(). This function ensures that the directory |
** zFile will be written to exists, creating it if required. The permissions |
** for any path components created by this function are set in accordance |
** with the current umask. |
** |
** If an OOM condition is encountered, SQLITE_NOMEM is returned. Otherwise, |
** SQLITE_OK is returned if the directory is successfully created, or |
** SQLITE_ERROR otherwise. |
*/ |
static int makeDirectory( |
const char *zFile |
){ |
char *zCopy = sqlite3_mprintf("%s", zFile); |
int rc = SQLITE_OK; |
|
if( zCopy==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
int nCopy = (int)strlen(zCopy); |
int i = 1; |
|
while( rc==SQLITE_OK ){ |
struct stat sStat; |
int rc2; |
|
for(; zCopy[i]!='/' && i<nCopy; i++); |
if( i==nCopy ) break; |
zCopy[i] = '\0'; |
|
rc2 = fileStat(zCopy, &sStat); |
if( rc2!=0 ){ |
if( mkdir(zCopy, 0777) ) rc = SQLITE_ERROR; |
}else{ |
if( !S_ISDIR(sStat.st_mode) ) rc = SQLITE_ERROR; |
} |
zCopy[i] = '/'; |
i++; |
} |
|
sqlite3_free(zCopy); |
} |
|
return rc; |
} |
|
/* |
** This function does the work for the writefile() UDF. Refer to |
** header comments at the top of this file for details. |
*/ |
static int writeFile( |
sqlite3_context *pCtx, /* Context to return bytes written in */ |
const char *zFile, /* File to write */ |
sqlite3_value *pData, /* Data to write */ |
mode_t mode, /* MODE parameter passed to writefile() */ |
sqlite3_int64 mtime /* MTIME parameter (or -1 to not set time) */ |
){ |
#if !defined(_WIN32) && !defined(WIN32) && !defined (_KOLIBRI) |
|
if( S_ISLNK(mode) ){ |
const char *zTo = (const char*)sqlite3_value_text(pData); |
if( symlink(zTo, zFile)<0 ) return 1; |
}else |
#endif |
{ |
if( S_ISDIR(mode) ){ |
if( mkdir(zFile, mode) ){ |
/* The mkdir() call to create the directory failed. This might not |
** be an error though - if there is already a directory at the same |
** path and either the permissions already match or can be changed |
** to do so using chmod(), it is not an error. */ |
struct stat sStat; |
if( errno!=EEXIST |
|| 0!=fileStat(zFile, &sStat) |
|| !S_ISDIR(sStat.st_mode) |
|| ((sStat.st_mode&0777)!=(mode&0777) && 0!=chmod(zFile, mode&0777)) |
){ |
return 1; |
} |
} |
}else{ |
sqlite3_int64 nWrite = 0; |
const char *z; |
int rc = 0; |
FILE *out = fopen(zFile, "wb"); |
if( out==0 ) return 1; |
z = (const char*)sqlite3_value_blob(pData); |
if( z ){ |
sqlite3_int64 n = fwrite(z, 1, sqlite3_value_bytes(pData), out); |
nWrite = sqlite3_value_bytes(pData); |
if( nWrite!=n ){ |
rc = 1; |
} |
} |
fclose(out); |
if( rc==0 && mode && chmod(zFile, mode & 0777) ){ |
rc = 1; |
} |
if( rc ) return 2; |
sqlite3_result_int64(pCtx, nWrite); |
} |
} |
|
if( mtime>=0 ){ |
#if defined(_WIN32) |
#if !SQLITE_OS_WINRT |
/* Windows */ |
FILETIME lastAccess; |
FILETIME lastWrite; |
SYSTEMTIME currentTime; |
LONGLONG intervals; |
HANDLE hFile; |
LPWSTR zUnicodeName; |
extern LPWSTR sqlite3_win32_utf8_to_unicode(const char*); |
|
GetSystemTime(¤tTime); |
SystemTimeToFileTime(¤tTime, &lastAccess); |
intervals = Int32x32To64(mtime, 10000000) + 116444736000000000; |
lastWrite.dwLowDateTime = (DWORD)intervals; |
lastWrite.dwHighDateTime = intervals >> 32; |
zUnicodeName = sqlite3_win32_utf8_to_unicode(zFile); |
if( zUnicodeName==0 ){ |
return 1; |
} |
hFile = CreateFileW( |
zUnicodeName, FILE_WRITE_ATTRIBUTES, 0, NULL, OPEN_EXISTING, |
FILE_FLAG_BACKUP_SEMANTICS, NULL |
); |
sqlite3_free(zUnicodeName); |
if( hFile!=INVALID_HANDLE_VALUE ){ |
BOOL bResult = SetFileTime(hFile, NULL, &lastAccess, &lastWrite); |
CloseHandle(hFile); |
return !bResult; |
}else{ |
return 1; |
} |
#endif |
#elif defined(AT_FDCWD) && 0 /* utimensat() is not universally available */ |
/* Recent unix */ |
struct timespec times[2]; |
times[0].tv_nsec = times[1].tv_nsec = 0; |
times[0].tv_sec = time(0); |
times[1].tv_sec = mtime; |
if( utimensat(AT_FDCWD, zFile, times, AT_SYMLINK_NOFOLLOW) ){ |
return 1; |
} |
|
|
#elif !defined(_KOLIBRI) |
/* Legacy unix */ |
struct timeval times[2]; |
times[0].tv_usec = times[1].tv_usec = 0; |
times[0].tv_sec = time(0); |
times[1].tv_sec = mtime; |
if( utimes(zFile, times) ){ |
return 1; |
} |
#endif |
} |
|
return 0; |
} |
|
/* |
** Implementation of the "writefile(W,X[,Y[,Z]]])" SQL function. |
** Refer to header comments at the top of this file for details. |
*/ |
static void writefileFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
const char *zFile; |
mode_t mode = 0; |
int res; |
sqlite3_int64 mtime = -1; |
|
if( argc<2 || argc>4 ){ |
sqlite3_result_error(context, |
"wrong number of arguments to function writefile()", -1 |
); |
return; |
} |
|
zFile = (const char*)sqlite3_value_text(argv[0]); |
if( zFile==0 ) return; |
if( argc>=3 ){ |
mode = (mode_t)sqlite3_value_int(argv[2]); |
} |
if( argc==4 ){ |
mtime = sqlite3_value_int64(argv[3]); |
} |
|
res = writeFile(context, zFile, argv[1], mode, mtime); |
if( res==1 && errno==ENOENT ){ |
if( makeDirectory(zFile)==SQLITE_OK ){ |
res = writeFile(context, zFile, argv[1], mode, mtime); |
} |
} |
|
if( argc>2 && res!=0 ){ |
if( S_ISLNK(mode) ){ |
ctxErrorMsg(context, "failed to create symlink: %s", zFile); |
}else if( S_ISDIR(mode) ){ |
ctxErrorMsg(context, "failed to create directory: %s", zFile); |
}else{ |
ctxErrorMsg(context, "failed to write file: %s", zFile); |
} |
} |
} |
|
/* |
** SQL function: lsmode(MODE) |
** |
** Given a numberic st_mode from stat(), convert it into a human-readable |
** text string in the style of "ls -l". |
*/ |
static void lsModeFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
int i; |
int iMode = sqlite3_value_int(argv[0]); |
char z[16]; |
(void)argc; |
if( S_ISLNK(iMode) ){ |
z[0] = 'l'; |
}else if( S_ISREG(iMode) ){ |
z[0] = '-'; |
}else if( S_ISDIR(iMode) ){ |
z[0] = 'd'; |
}else{ |
z[0] = '?'; |
} |
for(i=0; i<3; i++){ |
int m = (iMode >> ((2-i)*3)); |
char *a = &z[1 + i*3]; |
a[0] = (m & 0x4) ? 'r' : '-'; |
a[1] = (m & 0x2) ? 'w' : '-'; |
a[2] = (m & 0x1) ? 'x' : '-'; |
} |
z[10] = '\0'; |
sqlite3_result_text(context, z, -1, SQLITE_TRANSIENT); |
} |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
|
/* |
** Cursor type for recursively iterating through a directory structure. |
*/ |
typedef struct fsdir_cursor fsdir_cursor; |
typedef struct FsdirLevel FsdirLevel; |
|
struct FsdirLevel { |
DIR *pDir; /* From opendir() */ |
char *zDir; /* Name of directory (nul-terminated) */ |
}; |
|
struct fsdir_cursor { |
sqlite3_vtab_cursor base; /* Base class - must be first */ |
|
int nLvl; /* Number of entries in aLvl[] array */ |
int iLvl; /* Index of current entry */ |
FsdirLevel *aLvl; /* Hierarchy of directories being traversed */ |
|
const char *zBase; |
int nBase; |
|
struct stat sStat; /* Current lstat() results */ |
char *zPath; /* Path to current entry */ |
sqlite3_int64 iRowid; /* Current rowid */ |
}; |
|
typedef struct fsdir_tab fsdir_tab; |
struct fsdir_tab { |
sqlite3_vtab base; /* Base class - must be first */ |
}; |
|
/* |
** Construct a new fsdir virtual table object. |
*/ |
static int fsdirConnect( |
sqlite3 *db, |
void *pAux, |
int argc, const char *const*argv, |
sqlite3_vtab **ppVtab, |
char **pzErr |
){ |
fsdir_tab *pNew = 0; |
int rc; |
(void)pAux; |
(void)argc; |
(void)argv; |
(void)pzErr; |
rc = sqlite3_declare_vtab(db, "CREATE TABLE x" FSDIR_SCHEMA); |
if( rc==SQLITE_OK ){ |
pNew = (fsdir_tab*)sqlite3_malloc( sizeof(*pNew) ); |
if( pNew==0 ) return SQLITE_NOMEM; |
memset(pNew, 0, sizeof(*pNew)); |
sqlite3_vtab_config(db, SQLITE_VTAB_DIRECTONLY); |
} |
*ppVtab = (sqlite3_vtab*)pNew; |
return rc; |
} |
|
/* |
** This method is the destructor for fsdir vtab objects. |
*/ |
static int fsdirDisconnect(sqlite3_vtab *pVtab){ |
sqlite3_free(pVtab); |
return SQLITE_OK; |
} |
|
/* |
** Constructor for a new fsdir_cursor object. |
*/ |
static int fsdirOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ |
fsdir_cursor *pCur; |
(void)p; |
pCur = sqlite3_malloc( sizeof(*pCur) ); |
if( pCur==0 ) return SQLITE_NOMEM; |
memset(pCur, 0, sizeof(*pCur)); |
pCur->iLvl = -1; |
*ppCursor = &pCur->base; |
return SQLITE_OK; |
} |
|
/* |
** Reset a cursor back to the state it was in when first returned |
** by fsdirOpen(). |
*/ |
static void fsdirResetCursor(fsdir_cursor *pCur){ |
int i; |
for(i=0; i<=pCur->iLvl; i++){ |
FsdirLevel *pLvl = &pCur->aLvl[i]; |
if( pLvl->pDir ) closedir(pLvl->pDir); |
sqlite3_free(pLvl->zDir); |
} |
sqlite3_free(pCur->zPath); |
sqlite3_free(pCur->aLvl); |
pCur->aLvl = 0; |
pCur->zPath = 0; |
pCur->zBase = 0; |
pCur->nBase = 0; |
pCur->nLvl = 0; |
pCur->iLvl = -1; |
pCur->iRowid = 1; |
} |
|
/* |
** Destructor for an fsdir_cursor. |
*/ |
static int fsdirClose(sqlite3_vtab_cursor *cur){ |
fsdir_cursor *pCur = (fsdir_cursor*)cur; |
|
fsdirResetCursor(pCur); |
sqlite3_free(pCur); |
return SQLITE_OK; |
} |
|
/* |
** Set the error message for the virtual table associated with cursor |
** pCur to the results of vprintf(zFmt, ...). |
*/ |
static void fsdirSetErrmsg(fsdir_cursor *pCur, const char *zFmt, ...){ |
va_list ap; |
va_start(ap, zFmt); |
pCur->base.pVtab->zErrMsg = sqlite3_vmprintf(zFmt, ap); |
va_end(ap); |
} |
|
|
/* |
** Advance an fsdir_cursor to its next row of output. |
*/ |
static int fsdirNext(sqlite3_vtab_cursor *cur){ |
fsdir_cursor *pCur = (fsdir_cursor*)cur; |
mode_t m = pCur->sStat.st_mode; |
|
pCur->iRowid++; |
if( S_ISDIR(m) ){ |
/* Descend into this directory */ |
int iNew = pCur->iLvl + 1; |
FsdirLevel *pLvl; |
if( iNew>=pCur->nLvl ){ |
int nNew = iNew+1; |
sqlite3_int64 nByte = nNew*sizeof(FsdirLevel); |
FsdirLevel *aNew = (FsdirLevel*)sqlite3_realloc64(pCur->aLvl, nByte); |
if( aNew==0 ) return SQLITE_NOMEM; |
memset(&aNew[pCur->nLvl], 0, sizeof(FsdirLevel)*(nNew-pCur->nLvl)); |
pCur->aLvl = aNew; |
pCur->nLvl = nNew; |
} |
pCur->iLvl = iNew; |
pLvl = &pCur->aLvl[iNew]; |
|
pLvl->zDir = pCur->zPath; |
pCur->zPath = 0; |
pLvl->pDir = opendir(pLvl->zDir); |
if( pLvl->pDir==0 ){ |
fsdirSetErrmsg(pCur, "cannot read directory: %s", pCur->zPath); |
return SQLITE_ERROR; |
} |
} |
|
while( pCur->iLvl>=0 ){ |
FsdirLevel *pLvl = &pCur->aLvl[pCur->iLvl]; |
struct dirent *pEntry = readdir(pLvl->pDir); |
if( pEntry ){ |
if( pEntry->d_name[0]=='.' ){ |
if( pEntry->d_name[1]=='.' && pEntry->d_name[2]=='\0' ) continue; |
if( pEntry->d_name[1]=='\0' ) continue; |
} |
sqlite3_free(pCur->zPath); |
pCur->zPath = sqlite3_mprintf("%s/%s", pLvl->zDir, pEntry->d_name); |
if( pCur->zPath==0 ) return SQLITE_NOMEM; |
if( fileLinkStat(pCur->zPath, &pCur->sStat) ){ |
fsdirSetErrmsg(pCur, "cannot stat file: %s", pCur->zPath); |
return SQLITE_ERROR; |
} |
return SQLITE_OK; |
} |
closedir(pLvl->pDir); |
sqlite3_free(pLvl->zDir); |
pLvl->pDir = 0; |
pLvl->zDir = 0; |
pCur->iLvl--; |
} |
|
/* EOF */ |
sqlite3_free(pCur->zPath); |
pCur->zPath = 0; |
return SQLITE_OK; |
} |
|
/* |
** Return values of columns for the row at which the series_cursor |
** is currently pointing. |
*/ |
static int fsdirColumn( |
sqlite3_vtab_cursor *cur, /* The cursor */ |
sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ |
int i /* Which column to return */ |
){ |
fsdir_cursor *pCur = (fsdir_cursor*)cur; |
switch( i ){ |
case FSDIR_COLUMN_NAME: { |
sqlite3_result_text(ctx, &pCur->zPath[pCur->nBase], -1, SQLITE_TRANSIENT); |
break; |
} |
|
case FSDIR_COLUMN_MODE: |
sqlite3_result_int64(ctx, pCur->sStat.st_mode); |
break; |
|
case FSDIR_COLUMN_MTIME: |
sqlite3_result_int64(ctx, pCur->sStat.st_mtime); |
break; |
|
case FSDIR_COLUMN_DATA: { |
mode_t m = pCur->sStat.st_mode; |
if( S_ISDIR(m) ){ |
sqlite3_result_null(ctx); |
#if !defined(_WIN32) && !defined(WIN32) && !defined(_KOLIBRI) |
}else if( S_ISLNK(m) ){ |
char aStatic[64]; |
char *aBuf = aStatic; |
sqlite3_int64 nBuf = 64; |
int n; |
|
while( 1 ){ |
n = readlink(pCur->zPath, aBuf, nBuf); |
if( n<nBuf ) break; |
if( aBuf!=aStatic ) sqlite3_free(aBuf); |
nBuf = nBuf*2; |
aBuf = sqlite3_malloc64(nBuf); |
if( aBuf==0 ){ |
sqlite3_result_error_nomem(ctx); |
return SQLITE_NOMEM; |
} |
} |
|
sqlite3_result_text(ctx, aBuf, n, SQLITE_TRANSIENT); |
if( aBuf!=aStatic ) sqlite3_free(aBuf); |
#endif |
}else{ |
readFileContents(ctx, pCur->zPath); |
} |
} |
case FSDIR_COLUMN_PATH: |
default: { |
/* The FSDIR_COLUMN_PATH and FSDIR_COLUMN_DIR are input parameters. |
** always return their values as NULL */ |
break; |
} |
} |
return SQLITE_OK; |
} |
|
/* |
** Return the rowid for the current row. In this implementation, the |
** first row returned is assigned rowid value 1, and each subsequent |
** row a value 1 more than that of the previous. |
*/ |
static int fsdirRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ |
fsdir_cursor *pCur = (fsdir_cursor*)cur; |
*pRowid = pCur->iRowid; |
return SQLITE_OK; |
} |
|
/* |
** Return TRUE if the cursor has been moved off of the last |
** row of output. |
*/ |
static int fsdirEof(sqlite3_vtab_cursor *cur){ |
fsdir_cursor *pCur = (fsdir_cursor*)cur; |
return (pCur->zPath==0); |
} |
|
/* |
** xFilter callback. |
** |
** idxNum==1 PATH parameter only |
** idxNum==2 Both PATH and DIR supplied |
*/ |
static int fsdirFilter( |
sqlite3_vtab_cursor *cur, |
int idxNum, const char *idxStr, |
int argc, sqlite3_value **argv |
){ |
const char *zDir = 0; |
fsdir_cursor *pCur = (fsdir_cursor*)cur; |
(void)idxStr; |
fsdirResetCursor(pCur); |
|
if( idxNum==0 ){ |
fsdirSetErrmsg(pCur, "table function fsdir requires an argument"); |
return SQLITE_ERROR; |
} |
|
assert( argc==idxNum && (argc==1 || argc==2) ); |
zDir = (const char*)sqlite3_value_text(argv[0]); |
if( zDir==0 ){ |
fsdirSetErrmsg(pCur, "table function fsdir requires a non-NULL argument"); |
return SQLITE_ERROR; |
} |
if( argc==2 ){ |
pCur->zBase = (const char*)sqlite3_value_text(argv[1]); |
} |
if( pCur->zBase ){ |
pCur->nBase = (int)strlen(pCur->zBase)+1; |
pCur->zPath = sqlite3_mprintf("%s/%s", pCur->zBase, zDir); |
}else{ |
pCur->zPath = sqlite3_mprintf("%s", zDir); |
} |
|
if( pCur->zPath==0 ){ |
return SQLITE_NOMEM; |
} |
if( fileLinkStat(pCur->zPath, &pCur->sStat) ){ |
fsdirSetErrmsg(pCur, "cannot stat file: %s", pCur->zPath); |
return SQLITE_ERROR; |
} |
|
return SQLITE_OK; |
} |
|
/* |
** SQLite will invoke this method one or more times while planning a query |
** that uses the generate_series virtual table. This routine needs to create |
** a query plan for each invocation and compute an estimated cost for that |
** plan. |
** |
** In this implementation idxNum is used to represent the |
** query plan. idxStr is unused. |
** |
** The query plan is represented by values of idxNum: |
** |
** (1) The path value is supplied by argv[0] |
** (2) Path is in argv[0] and dir is in argv[1] |
*/ |
static int fsdirBestIndex( |
sqlite3_vtab *tab, |
sqlite3_index_info *pIdxInfo |
){ |
int i; /* Loop over constraints */ |
int idxPath = -1; /* Index in pIdxInfo->aConstraint of PATH= */ |
int idxDir = -1; /* Index in pIdxInfo->aConstraint of DIR= */ |
int seenPath = 0; /* True if an unusable PATH= constraint is seen */ |
int seenDir = 0; /* True if an unusable DIR= constraint is seen */ |
const struct sqlite3_index_constraint *pConstraint; |
|
(void)tab; |
pConstraint = pIdxInfo->aConstraint; |
for(i=0; i<pIdxInfo->nConstraint; i++, pConstraint++){ |
if( pConstraint->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; |
switch( pConstraint->iColumn ){ |
case FSDIR_COLUMN_PATH: { |
if( pConstraint->usable ){ |
idxPath = i; |
seenPath = 0; |
}else if( idxPath<0 ){ |
seenPath = 1; |
} |
break; |
} |
case FSDIR_COLUMN_DIR: { |
if( pConstraint->usable ){ |
idxDir = i; |
seenDir = 0; |
}else if( idxDir<0 ){ |
seenDir = 1; |
} |
break; |
} |
} |
} |
if( seenPath || seenDir ){ |
/* If input parameters are unusable, disallow this plan */ |
return SQLITE_CONSTRAINT; |
} |
|
if( idxPath<0 ){ |
pIdxInfo->idxNum = 0; |
/* The pIdxInfo->estimatedCost should have been initialized to a huge |
** number. Leave it unchanged. */ |
pIdxInfo->estimatedRows = 0x7fffffff; |
}else{ |
pIdxInfo->aConstraintUsage[idxPath].omit = 1; |
pIdxInfo->aConstraintUsage[idxPath].argvIndex = 1; |
if( idxDir>=0 ){ |
pIdxInfo->aConstraintUsage[idxDir].omit = 1; |
pIdxInfo->aConstraintUsage[idxDir].argvIndex = 2; |
pIdxInfo->idxNum = 2; |
pIdxInfo->estimatedCost = 10.0; |
}else{ |
pIdxInfo->idxNum = 1; |
pIdxInfo->estimatedCost = 100.0; |
} |
} |
|
return SQLITE_OK; |
} |
|
/* |
** Register the "fsdir" virtual table. |
*/ |
static int fsdirRegister(sqlite3 *db){ |
static sqlite3_module fsdirModule = { |
0, /* iVersion */ |
0, /* xCreate */ |
fsdirConnect, /* xConnect */ |
fsdirBestIndex, /* xBestIndex */ |
fsdirDisconnect, /* xDisconnect */ |
0, /* xDestroy */ |
fsdirOpen, /* xOpen - open a cursor */ |
fsdirClose, /* xClose - close a cursor */ |
fsdirFilter, /* xFilter - configure scan constraints */ |
fsdirNext, /* xNext - advance a cursor */ |
fsdirEof, /* xEof - check for end of scan */ |
fsdirColumn, /* xColumn - read data */ |
fsdirRowid, /* xRowid - read data */ |
0, /* xUpdate */ |
0, /* xBegin */ |
0, /* xSync */ |
0, /* xCommit */ |
0, /* xRollback */ |
0, /* xFindMethod */ |
0, /* xRename */ |
0, /* xSavepoint */ |
0, /* xRelease */ |
0, /* xRollbackTo */ |
0, /* xShadowName */ |
}; |
|
int rc = sqlite3_create_module(db, "fsdir", &fsdirModule, 0); |
return rc; |
} |
#else /* SQLITE_OMIT_VIRTUALTABLE */ |
# define fsdirRegister(x) SQLITE_OK |
#endif |
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_fileio_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
int rc = SQLITE_OK; |
SQLITE_EXTENSION_INIT2(pApi); |
(void)pzErrMsg; /* Unused parameter */ |
rc = sqlite3_create_function(db, "readfile", 1, |
SQLITE_UTF8|SQLITE_DIRECTONLY, 0, |
readfileFunc, 0, 0); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_function(db, "writefile", -1, |
SQLITE_UTF8|SQLITE_DIRECTONLY, 0, |
writefileFunc, 0, 0); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_function(db, "lsmode", 1, SQLITE_UTF8, 0, |
lsModeFunc, 0, 0); |
} |
if( rc==SQLITE_OK ){ |
rc = fsdirRegister(db); |
} |
return rc; |
} |
|
/************************* End ../ext/misc/fileio.c ********************/ |
/************************* Begin ../ext/misc/completion.c ******************/ |
/* |
** 2017-07-10 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
************************************************************************* |
** |
** This file implements an eponymous virtual table that returns suggested |
** completions for a partial SQL input. |
** |
** Suggested usage: |
** |
** SELECT DISTINCT candidate COLLATE nocase |
** FROM completion($prefix,$wholeline) |
** ORDER BY 1; |
** |
** The two query parameters are optional. $prefix is the text of the |
** current word being typed and that is to be completed. $wholeline is |
** the complete input line, used for context. |
** |
** The raw completion() table might return the same candidate multiple |
** times, for example if the same column name is used to two or more |
** tables. And the candidates are returned in an arbitrary order. Hence, |
** the DISTINCT and ORDER BY are recommended. |
** |
** This virtual table operates at the speed of human typing, and so there |
** is no attempt to make it fast. Even a slow implementation will be much |
** faster than any human can type. |
** |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <assert.h> |
#include <string.h> |
#include <ctype.h> |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
|
/* completion_vtab is a subclass of sqlite3_vtab which will |
** serve as the underlying representation of a completion virtual table |
*/ |
typedef struct completion_vtab completion_vtab; |
struct completion_vtab { |
sqlite3_vtab base; /* Base class - must be first */ |
sqlite3 *db; /* Database connection for this completion vtab */ |
}; |
|
/* completion_cursor is a subclass of sqlite3_vtab_cursor which will |
** serve as the underlying representation of a cursor that scans |
** over rows of the result |
*/ |
typedef struct completion_cursor completion_cursor; |
struct completion_cursor { |
sqlite3_vtab_cursor base; /* Base class - must be first */ |
sqlite3 *db; /* Database connection for this cursor */ |
int nPrefix, nLine; /* Number of bytes in zPrefix and zLine */ |
char *zPrefix; /* The prefix for the word we want to complete */ |
char *zLine; /* The whole that we want to complete */ |
const char *zCurrentRow; /* Current output row */ |
int szRow; /* Length of the zCurrentRow string */ |
sqlite3_stmt *pStmt; /* Current statement */ |
sqlite3_int64 iRowid; /* The rowid */ |
int ePhase; /* Current phase */ |
int j; /* inter-phase counter */ |
}; |
|
/* Values for ePhase: |
*/ |
#define COMPLETION_FIRST_PHASE 1 |
#define COMPLETION_KEYWORDS 1 |
#define COMPLETION_PRAGMAS 2 |
#define COMPLETION_FUNCTIONS 3 |
#define COMPLETION_COLLATIONS 4 |
#define COMPLETION_INDEXES 5 |
#define COMPLETION_TRIGGERS 6 |
#define COMPLETION_DATABASES 7 |
#define COMPLETION_TABLES 8 /* Also VIEWs and TRIGGERs */ |
#define COMPLETION_COLUMNS 9 |
#define COMPLETION_MODULES 10 |
#define COMPLETION_EOF 11 |
|
/* |
** The completionConnect() method is invoked to create a new |
** completion_vtab that describes the completion virtual table. |
** |
** Think of this routine as the constructor for completion_vtab objects. |
** |
** All this routine needs to do is: |
** |
** (1) Allocate the completion_vtab object and initialize all fields. |
** |
** (2) Tell SQLite (via the sqlite3_declare_vtab() interface) what the |
** result set of queries against completion will look like. |
*/ |
static int completionConnect( |
sqlite3 *db, |
void *pAux, |
int argc, const char *const*argv, |
sqlite3_vtab **ppVtab, |
char **pzErr |
){ |
completion_vtab *pNew; |
int rc; |
|
(void)(pAux); /* Unused parameter */ |
(void)(argc); /* Unused parameter */ |
(void)(argv); /* Unused parameter */ |
(void)(pzErr); /* Unused parameter */ |
|
/* Column numbers */ |
#define COMPLETION_COLUMN_CANDIDATE 0 /* Suggested completion of the input */ |
#define COMPLETION_COLUMN_PREFIX 1 /* Prefix of the word to be completed */ |
#define COMPLETION_COLUMN_WHOLELINE 2 /* Entire line seen so far */ |
#define COMPLETION_COLUMN_PHASE 3 /* ePhase - used for debugging only */ |
|
sqlite3_vtab_config(db, SQLITE_VTAB_INNOCUOUS); |
rc = sqlite3_declare_vtab(db, |
"CREATE TABLE x(" |
" candidate TEXT," |
" prefix TEXT HIDDEN," |
" wholeline TEXT HIDDEN," |
" phase INT HIDDEN" /* Used for debugging only */ |
")"); |
if( rc==SQLITE_OK ){ |
pNew = sqlite3_malloc( sizeof(*pNew) ); |
*ppVtab = (sqlite3_vtab*)pNew; |
if( pNew==0 ) return SQLITE_NOMEM; |
memset(pNew, 0, sizeof(*pNew)); |
pNew->db = db; |
} |
return rc; |
} |
|
/* |
** This method is the destructor for completion_cursor objects. |
*/ |
static int completionDisconnect(sqlite3_vtab *pVtab){ |
sqlite3_free(pVtab); |
return SQLITE_OK; |
} |
|
/* |
** Constructor for a new completion_cursor object. |
*/ |
static int completionOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ |
completion_cursor *pCur; |
pCur = sqlite3_malloc( sizeof(*pCur) ); |
if( pCur==0 ) return SQLITE_NOMEM; |
memset(pCur, 0, sizeof(*pCur)); |
pCur->db = ((completion_vtab*)p)->db; |
*ppCursor = &pCur->base; |
return SQLITE_OK; |
} |
|
/* |
** Reset the completion_cursor. |
*/ |
static void completionCursorReset(completion_cursor *pCur){ |
sqlite3_free(pCur->zPrefix); pCur->zPrefix = 0; pCur->nPrefix = 0; |
sqlite3_free(pCur->zLine); pCur->zLine = 0; pCur->nLine = 0; |
sqlite3_finalize(pCur->pStmt); pCur->pStmt = 0; |
pCur->j = 0; |
} |
|
/* |
** Destructor for a completion_cursor. |
*/ |
static int completionClose(sqlite3_vtab_cursor *cur){ |
completionCursorReset((completion_cursor*)cur); |
sqlite3_free(cur); |
return SQLITE_OK; |
} |
|
/* |
** Advance a completion_cursor to its next row of output. |
** |
** The ->ePhase, ->j, and ->pStmt fields of the completion_cursor object |
** record the current state of the scan. This routine sets ->zCurrentRow |
** to the current row of output and then returns. If no more rows remain, |
** then ->ePhase is set to COMPLETION_EOF which will signal the virtual |
** table that has reached the end of its scan. |
** |
** The current implementation just lists potential identifiers and |
** keywords and filters them by zPrefix. Future enhancements should |
** take zLine into account to try to restrict the set of identifiers and |
** keywords based on what would be legal at the current point of input. |
*/ |
static int completionNext(sqlite3_vtab_cursor *cur){ |
completion_cursor *pCur = (completion_cursor*)cur; |
int eNextPhase = 0; /* Next phase to try if current phase reaches end */ |
int iCol = -1; /* If >=0, step pCur->pStmt and use the i-th column */ |
pCur->iRowid++; |
while( pCur->ePhase!=COMPLETION_EOF ){ |
switch( pCur->ePhase ){ |
case COMPLETION_KEYWORDS: { |
if( pCur->j >= sqlite3_keyword_count() ){ |
pCur->zCurrentRow = 0; |
pCur->ePhase = COMPLETION_DATABASES; |
}else{ |
sqlite3_keyword_name(pCur->j++, &pCur->zCurrentRow, &pCur->szRow); |
} |
iCol = -1; |
break; |
} |
case COMPLETION_DATABASES: { |
if( pCur->pStmt==0 ){ |
sqlite3_prepare_v2(pCur->db, "PRAGMA database_list", -1, |
&pCur->pStmt, 0); |
} |
iCol = 1; |
eNextPhase = COMPLETION_TABLES; |
break; |
} |
case COMPLETION_TABLES: { |
if( pCur->pStmt==0 ){ |
sqlite3_stmt *pS2; |
char *zSql = 0; |
const char *zSep = ""; |
sqlite3_prepare_v2(pCur->db, "PRAGMA database_list", -1, &pS2, 0); |
while( sqlite3_step(pS2)==SQLITE_ROW ){ |
const char *zDb = (const char*)sqlite3_column_text(pS2, 1); |
zSql = sqlite3_mprintf( |
"%z%s" |
"SELECT name FROM \"%w\".sqlite_schema", |
zSql, zSep, zDb |
); |
if( zSql==0 ) return SQLITE_NOMEM; |
zSep = " UNION "; |
} |
sqlite3_finalize(pS2); |
sqlite3_prepare_v2(pCur->db, zSql, -1, &pCur->pStmt, 0); |
sqlite3_free(zSql); |
} |
iCol = 0; |
eNextPhase = COMPLETION_COLUMNS; |
break; |
} |
case COMPLETION_COLUMNS: { |
if( pCur->pStmt==0 ){ |
sqlite3_stmt *pS2; |
char *zSql = 0; |
const char *zSep = ""; |
sqlite3_prepare_v2(pCur->db, "PRAGMA database_list", -1, &pS2, 0); |
while( sqlite3_step(pS2)==SQLITE_ROW ){ |
const char *zDb = (const char*)sqlite3_column_text(pS2, 1); |
zSql = sqlite3_mprintf( |
"%z%s" |
"SELECT pti.name FROM \"%w\".sqlite_schema AS sm" |
" JOIN pragma_table_info(sm.name,%Q) AS pti" |
" WHERE sm.type='table'", |
zSql, zSep, zDb, zDb |
); |
if( zSql==0 ) return SQLITE_NOMEM; |
zSep = " UNION "; |
} |
sqlite3_finalize(pS2); |
sqlite3_prepare_v2(pCur->db, zSql, -1, &pCur->pStmt, 0); |
sqlite3_free(zSql); |
} |
iCol = 0; |
eNextPhase = COMPLETION_EOF; |
break; |
} |
} |
if( iCol<0 ){ |
/* This case is when the phase presets zCurrentRow */ |
if( pCur->zCurrentRow==0 ) continue; |
}else{ |
if( sqlite3_step(pCur->pStmt)==SQLITE_ROW ){ |
/* Extract the next row of content */ |
pCur->zCurrentRow = (const char*)sqlite3_column_text(pCur->pStmt, iCol); |
pCur->szRow = sqlite3_column_bytes(pCur->pStmt, iCol); |
}else{ |
/* When all rows are finished, advance to the next phase */ |
sqlite3_finalize(pCur->pStmt); |
pCur->pStmt = 0; |
pCur->ePhase = eNextPhase; |
continue; |
} |
} |
if( pCur->nPrefix==0 ) break; |
if( pCur->nPrefix<=pCur->szRow |
&& sqlite3_strnicmp(pCur->zPrefix, pCur->zCurrentRow, pCur->nPrefix)==0 |
){ |
break; |
} |
} |
|
return SQLITE_OK; |
} |
|
/* |
** Return values of columns for the row at which the completion_cursor |
** is currently pointing. |
*/ |
static int completionColumn( |
sqlite3_vtab_cursor *cur, /* The cursor */ |
sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ |
int i /* Which column to return */ |
){ |
completion_cursor *pCur = (completion_cursor*)cur; |
switch( i ){ |
case COMPLETION_COLUMN_CANDIDATE: { |
sqlite3_result_text(ctx, pCur->zCurrentRow, pCur->szRow,SQLITE_TRANSIENT); |
break; |
} |
case COMPLETION_COLUMN_PREFIX: { |
sqlite3_result_text(ctx, pCur->zPrefix, -1, SQLITE_TRANSIENT); |
break; |
} |
case COMPLETION_COLUMN_WHOLELINE: { |
sqlite3_result_text(ctx, pCur->zLine, -1, SQLITE_TRANSIENT); |
break; |
} |
case COMPLETION_COLUMN_PHASE: { |
sqlite3_result_int(ctx, pCur->ePhase); |
break; |
} |
} |
return SQLITE_OK; |
} |
|
/* |
** Return the rowid for the current row. In this implementation, the |
** rowid is the same as the output value. |
*/ |
static int completionRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ |
completion_cursor *pCur = (completion_cursor*)cur; |
*pRowid = pCur->iRowid; |
return SQLITE_OK; |
} |
|
/* |
** Return TRUE if the cursor has been moved off of the last |
** row of output. |
*/ |
static int completionEof(sqlite3_vtab_cursor *cur){ |
completion_cursor *pCur = (completion_cursor*)cur; |
return pCur->ePhase >= COMPLETION_EOF; |
} |
|
/* |
** This method is called to "rewind" the completion_cursor object back |
** to the first row of output. This method is always called at least |
** once prior to any call to completionColumn() or completionRowid() or |
** completionEof(). |
*/ |
static int completionFilter( |
sqlite3_vtab_cursor *pVtabCursor, |
int idxNum, const char *idxStr, |
int argc, sqlite3_value **argv |
){ |
completion_cursor *pCur = (completion_cursor *)pVtabCursor; |
int iArg = 0; |
(void)(idxStr); /* Unused parameter */ |
(void)(argc); /* Unused parameter */ |
completionCursorReset(pCur); |
if( idxNum & 1 ){ |
pCur->nPrefix = sqlite3_value_bytes(argv[iArg]); |
if( pCur->nPrefix>0 ){ |
pCur->zPrefix = sqlite3_mprintf("%s", sqlite3_value_text(argv[iArg])); |
if( pCur->zPrefix==0 ) return SQLITE_NOMEM; |
} |
iArg = 1; |
} |
if( idxNum & 2 ){ |
pCur->nLine = sqlite3_value_bytes(argv[iArg]); |
if( pCur->nLine>0 ){ |
pCur->zLine = sqlite3_mprintf("%s", sqlite3_value_text(argv[iArg])); |
if( pCur->zLine==0 ) return SQLITE_NOMEM; |
} |
} |
if( pCur->zLine!=0 && pCur->zPrefix==0 ){ |
int i = pCur->nLine; |
while( i>0 && (isalnum(pCur->zLine[i-1]) || pCur->zLine[i-1]=='_') ){ |
i--; |
} |
pCur->nPrefix = pCur->nLine - i; |
if( pCur->nPrefix>0 ){ |
pCur->zPrefix = sqlite3_mprintf("%.*s", pCur->nPrefix, pCur->zLine + i); |
if( pCur->zPrefix==0 ) return SQLITE_NOMEM; |
} |
} |
pCur->iRowid = 0; |
pCur->ePhase = COMPLETION_FIRST_PHASE; |
return completionNext(pVtabCursor); |
} |
|
/* |
** SQLite will invoke this method one or more times while planning a query |
** that uses the completion virtual table. This routine needs to create |
** a query plan for each invocation and compute an estimated cost for that |
** plan. |
** |
** There are two hidden parameters that act as arguments to the table-valued |
** function: "prefix" and "wholeline". Bit 0 of idxNum is set if "prefix" |
** is available and bit 1 is set if "wholeline" is available. |
*/ |
static int completionBestIndex( |
sqlite3_vtab *tab, |
sqlite3_index_info *pIdxInfo |
){ |
int i; /* Loop over constraints */ |
int idxNum = 0; /* The query plan bitmask */ |
int prefixIdx = -1; /* Index of the start= constraint, or -1 if none */ |
int wholelineIdx = -1; /* Index of the stop= constraint, or -1 if none */ |
int nArg = 0; /* Number of arguments that completeFilter() expects */ |
const struct sqlite3_index_constraint *pConstraint; |
|
(void)(tab); /* Unused parameter */ |
pConstraint = pIdxInfo->aConstraint; |
for(i=0; i<pIdxInfo->nConstraint; i++, pConstraint++){ |
if( pConstraint->usable==0 ) continue; |
if( pConstraint->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; |
switch( pConstraint->iColumn ){ |
case COMPLETION_COLUMN_PREFIX: |
prefixIdx = i; |
idxNum |= 1; |
break; |
case COMPLETION_COLUMN_WHOLELINE: |
wholelineIdx = i; |
idxNum |= 2; |
break; |
} |
} |
if( prefixIdx>=0 ){ |
pIdxInfo->aConstraintUsage[prefixIdx].argvIndex = ++nArg; |
pIdxInfo->aConstraintUsage[prefixIdx].omit = 1; |
} |
if( wholelineIdx>=0 ){ |
pIdxInfo->aConstraintUsage[wholelineIdx].argvIndex = ++nArg; |
pIdxInfo->aConstraintUsage[wholelineIdx].omit = 1; |
} |
pIdxInfo->idxNum = idxNum; |
pIdxInfo->estimatedCost = (double)5000 - 1000*nArg; |
pIdxInfo->estimatedRows = 500 - 100*nArg; |
return SQLITE_OK; |
} |
|
/* |
** This following structure defines all the methods for the |
** completion virtual table. |
*/ |
static sqlite3_module completionModule = { |
0, /* iVersion */ |
0, /* xCreate */ |
completionConnect, /* xConnect */ |
completionBestIndex, /* xBestIndex */ |
completionDisconnect, /* xDisconnect */ |
0, /* xDestroy */ |
completionOpen, /* xOpen - open a cursor */ |
completionClose, /* xClose - close a cursor */ |
completionFilter, /* xFilter - configure scan constraints */ |
completionNext, /* xNext - advance a cursor */ |
completionEof, /* xEof - check for end of scan */ |
completionColumn, /* xColumn - read data */ |
completionRowid, /* xRowid - read data */ |
0, /* xUpdate */ |
0, /* xBegin */ |
0, /* xSync */ |
0, /* xCommit */ |
0, /* xRollback */ |
0, /* xFindMethod */ |
0, /* xRename */ |
0, /* xSavepoint */ |
0, /* xRelease */ |
0, /* xRollbackTo */ |
0 /* xShadowName */ |
}; |
|
#endif /* SQLITE_OMIT_VIRTUALTABLE */ |
|
int sqlite3CompletionVtabInit(sqlite3 *db){ |
int rc = SQLITE_OK; |
#ifndef SQLITE_OMIT_VIRTUALTABLE |
rc = sqlite3_create_module(db, "completion", &completionModule, 0); |
#endif |
return rc; |
} |
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_completion_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
int rc = SQLITE_OK; |
SQLITE_EXTENSION_INIT2(pApi); |
(void)(pzErrMsg); /* Unused parameter */ |
#ifndef SQLITE_OMIT_VIRTUALTABLE |
rc = sqlite3CompletionVtabInit(db); |
#endif |
return rc; |
} |
|
/************************* End ../ext/misc/completion.c ********************/ |
/************************* Begin ../ext/misc/appendvfs.c ******************/ |
/* |
** 2017-10-20 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** This file implements a VFS shim that allows an SQLite database to be |
** appended onto the end of some other file, such as an executable. |
** |
** A special record must appear at the end of the file that identifies the |
** file as an appended database and provides the offset to the first page |
** of the exposed content. (Or, it is the length of the content prefix.) |
** For best performance page 1 should be located at a disk page boundary, |
** though that is not required. |
** |
** When opening a database using this VFS, the connection might treat |
** the file as an ordinary SQLite database, or it might treat it as a |
** database appended onto some other file. The decision is made by |
** applying the following rules in order: |
** |
** (1) An empty file is an ordinary database. |
** |
** (2) If the file ends with the appendvfs trailer string |
** "Start-Of-SQLite3-NNNNNNNN" that file is an appended database. |
** |
** (3) If the file begins with the standard SQLite prefix string |
** "SQLite format 3", that file is an ordinary database. |
** |
** (4) If none of the above apply and the SQLITE_OPEN_CREATE flag is |
** set, then a new database is appended to the already existing file. |
** |
** (5) Otherwise, SQLITE_CANTOPEN is returned. |
** |
** To avoid unnecessary complications with the PENDING_BYTE, the size of |
** the file containing the database is limited to 1GiB. (1073741824 bytes) |
** This VFS will not read or write past the 1GiB mark. This restriction |
** might be lifted in future versions. For now, if you need a larger |
** database, then keep it in a separate file. |
** |
** If the file being opened is a plain database (not an appended one), then |
** this shim is a pass-through into the default underlying VFS. (rule 3) |
**/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <string.h> |
#include <assert.h> |
|
/* The append mark at the end of the database is: |
** |
** Start-Of-SQLite3-NNNNNNNN |
** 123456789 123456789 12345 |
** |
** The NNNNNNNN represents a 64-bit big-endian unsigned integer which is |
** the offset to page 1, and also the length of the prefix content. |
*/ |
#define APND_MARK_PREFIX "Start-Of-SQLite3-" |
#define APND_MARK_PREFIX_SZ 17 |
#define APND_MARK_FOS_SZ 8 |
#define APND_MARK_SIZE (APND_MARK_PREFIX_SZ+APND_MARK_FOS_SZ) |
|
/* |
** Maximum size of the combined prefix + database + append-mark. This |
** must be less than 0x40000000 to avoid locking issues on Windows. |
*/ |
#define APND_MAX_SIZE (0x40000000) |
|
/* |
** Try to align the database to an even multiple of APND_ROUNDUP bytes. |
*/ |
#ifndef APND_ROUNDUP |
#define APND_ROUNDUP 4096 |
#endif |
#define APND_ALIGN_MASK ((sqlite3_int64)(APND_ROUNDUP-1)) |
#define APND_START_ROUNDUP(fsz) (((fsz)+APND_ALIGN_MASK) & ~APND_ALIGN_MASK) |
|
/* |
** Forward declaration of objects used by this utility |
*/ |
typedef struct sqlite3_vfs ApndVfs; |
typedef struct ApndFile ApndFile; |
|
/* Access to a lower-level VFS that (might) implement dynamic loading, |
** access to randomness, etc. |
*/ |
#define ORIGVFS(p) ((sqlite3_vfs*)((p)->pAppData)) |
#define ORIGFILE(p) ((sqlite3_file*)(((ApndFile*)(p))+1)) |
|
/* An open appendvfs file |
** |
** An instance of this structure describes the appended database file. |
** A separate sqlite3_file object is always appended. The appended |
** sqlite3_file object (which can be accessed using ORIGFILE()) describes |
** the entire file, including the prefix, the database, and the |
** append-mark. |
** |
** The structure of an AppendVFS database is like this: |
** |
** +-------------+---------+----------+-------------+ |
** | prefix-file | padding | database | append-mark | |
** +-------------+---------+----------+-------------+ |
** ^ ^ |
** | | |
** iPgOne iMark |
** |
** |
** "prefix file" - file onto which the database has been appended. |
** "padding" - zero or more bytes inserted so that "database" |
** starts on an APND_ROUNDUP boundary |
** "database" - The SQLite database file |
** "append-mark" - The 25-byte "Start-Of-SQLite3-NNNNNNNN" that indicates |
** the offset from the start of prefix-file to the start |
** of "database". |
** |
** The size of the database is iMark - iPgOne. |
** |
** The NNNNNNNN in the "Start-Of-SQLite3-NNNNNNNN" suffix is the value |
** of iPgOne stored as a big-ending 64-bit integer. |
** |
** iMark will be the size of the underlying file minus 25 (APND_MARKSIZE). |
** Or, iMark is -1 to indicate that it has not yet been written. |
*/ |
struct ApndFile { |
sqlite3_file base; /* Subclass. MUST BE FIRST! */ |
sqlite3_int64 iPgOne; /* Offset to the start of the database */ |
sqlite3_int64 iMark; /* Offset of the append mark. -1 if unwritten */ |
/* Always followed by another sqlite3_file that describes the whole file */ |
}; |
|
/* |
** Methods for ApndFile |
*/ |
static int apndClose(sqlite3_file*); |
static int apndRead(sqlite3_file*, void*, int iAmt, sqlite3_int64 iOfst); |
static int apndWrite(sqlite3_file*,const void*,int iAmt, sqlite3_int64 iOfst); |
static int apndTruncate(sqlite3_file*, sqlite3_int64 size); |
static int apndSync(sqlite3_file*, int flags); |
static int apndFileSize(sqlite3_file*, sqlite3_int64 *pSize); |
static int apndLock(sqlite3_file*, int); |
static int apndUnlock(sqlite3_file*, int); |
static int apndCheckReservedLock(sqlite3_file*, int *pResOut); |
static int apndFileControl(sqlite3_file*, int op, void *pArg); |
static int apndSectorSize(sqlite3_file*); |
static int apndDeviceCharacteristics(sqlite3_file*); |
static int apndShmMap(sqlite3_file*, int iPg, int pgsz, int, void volatile**); |
static int apndShmLock(sqlite3_file*, int offset, int n, int flags); |
static void apndShmBarrier(sqlite3_file*); |
static int apndShmUnmap(sqlite3_file*, int deleteFlag); |
static int apndFetch(sqlite3_file*, sqlite3_int64 iOfst, int iAmt, void **pp); |
static int apndUnfetch(sqlite3_file*, sqlite3_int64 iOfst, void *p); |
|
/* |
** Methods for ApndVfs |
*/ |
static int apndOpen(sqlite3_vfs*, const char *, sqlite3_file*, int , int *); |
static int apndDelete(sqlite3_vfs*, const char *zName, int syncDir); |
static int apndAccess(sqlite3_vfs*, const char *zName, int flags, int *); |
static int apndFullPathname(sqlite3_vfs*, const char *zName, int, char *zOut); |
static void *apndDlOpen(sqlite3_vfs*, const char *zFilename); |
static void apndDlError(sqlite3_vfs*, int nByte, char *zErrMsg); |
static void (*apndDlSym(sqlite3_vfs *pVfs, void *p, const char*zSym))(void); |
static void apndDlClose(sqlite3_vfs*, void*); |
static int apndRandomness(sqlite3_vfs*, int nByte, char *zOut); |
static int apndSleep(sqlite3_vfs*, int microseconds); |
static int apndCurrentTime(sqlite3_vfs*, double*); |
static int apndGetLastError(sqlite3_vfs*, int, char *); |
static int apndCurrentTimeInt64(sqlite3_vfs*, sqlite3_int64*); |
static int apndSetSystemCall(sqlite3_vfs*, const char*,sqlite3_syscall_ptr); |
static sqlite3_syscall_ptr apndGetSystemCall(sqlite3_vfs*, const char *z); |
static const char *apndNextSystemCall(sqlite3_vfs*, const char *zName); |
|
static sqlite3_vfs apnd_vfs = { |
3, /* iVersion (set when registered) */ |
0, /* szOsFile (set when registered) */ |
1024, /* mxPathname */ |
0, /* pNext */ |
"apndvfs", /* zName */ |
0, /* pAppData (set when registered) */ |
apndOpen, /* xOpen */ |
apndDelete, /* xDelete */ |
apndAccess, /* xAccess */ |
apndFullPathname, /* xFullPathname */ |
apndDlOpen, /* xDlOpen */ |
apndDlError, /* xDlError */ |
apndDlSym, /* xDlSym */ |
apndDlClose, /* xDlClose */ |
apndRandomness, /* xRandomness */ |
apndSleep, /* xSleep */ |
apndCurrentTime, /* xCurrentTime */ |
apndGetLastError, /* xGetLastError */ |
apndCurrentTimeInt64, /* xCurrentTimeInt64 */ |
apndSetSystemCall, /* xSetSystemCall */ |
apndGetSystemCall, /* xGetSystemCall */ |
apndNextSystemCall /* xNextSystemCall */ |
}; |
|
static const sqlite3_io_methods apnd_io_methods = { |
3, /* iVersion */ |
apndClose, /* xClose */ |
apndRead, /* xRead */ |
apndWrite, /* xWrite */ |
apndTruncate, /* xTruncate */ |
apndSync, /* xSync */ |
apndFileSize, /* xFileSize */ |
apndLock, /* xLock */ |
apndUnlock, /* xUnlock */ |
apndCheckReservedLock, /* xCheckReservedLock */ |
apndFileControl, /* xFileControl */ |
apndSectorSize, /* xSectorSize */ |
apndDeviceCharacteristics, /* xDeviceCharacteristics */ |
apndShmMap, /* xShmMap */ |
apndShmLock, /* xShmLock */ |
apndShmBarrier, /* xShmBarrier */ |
apndShmUnmap, /* xShmUnmap */ |
apndFetch, /* xFetch */ |
apndUnfetch /* xUnfetch */ |
}; |
|
/* |
** Close an apnd-file. |
*/ |
static int apndClose(sqlite3_file *pFile){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xClose(pFile); |
} |
|
/* |
** Read data from an apnd-file. |
*/ |
static int apndRead( |
sqlite3_file *pFile, |
void *zBuf, |
int iAmt, |
sqlite_int64 iOfst |
){ |
ApndFile *paf = (ApndFile *)pFile; |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xRead(pFile, zBuf, iAmt, paf->iPgOne+iOfst); |
} |
|
/* |
** Add the append-mark onto what should become the end of the file. |
* If and only if this succeeds, internal ApndFile.iMark is updated. |
* Parameter iWriteEnd is the appendvfs-relative offset of the new mark. |
*/ |
static int apndWriteMark( |
ApndFile *paf, |
sqlite3_file *pFile, |
sqlite_int64 iWriteEnd |
){ |
sqlite_int64 iPgOne = paf->iPgOne; |
unsigned char a[APND_MARK_SIZE]; |
int i = APND_MARK_FOS_SZ; |
int rc; |
assert(pFile == ORIGFILE(paf)); |
memcpy(a, APND_MARK_PREFIX, APND_MARK_PREFIX_SZ); |
while( --i >= 0 ){ |
a[APND_MARK_PREFIX_SZ+i] = (unsigned char)(iPgOne & 0xff); |
iPgOne >>= 8; |
} |
iWriteEnd += paf->iPgOne; |
if( SQLITE_OK==(rc = pFile->pMethods->xWrite |
(pFile, a, APND_MARK_SIZE, iWriteEnd)) ){ |
paf->iMark = iWriteEnd; |
} |
return rc; |
} |
|
/* |
** Write data to an apnd-file. |
*/ |
static int apndWrite( |
sqlite3_file *pFile, |
const void *zBuf, |
int iAmt, |
sqlite_int64 iOfst |
){ |
ApndFile *paf = (ApndFile *)pFile; |
sqlite_int64 iWriteEnd = iOfst + iAmt; |
if( iWriteEnd>=APND_MAX_SIZE ) return SQLITE_FULL; |
pFile = ORIGFILE(pFile); |
/* If append-mark is absent or will be overwritten, write it. */ |
if( paf->iMark < 0 || paf->iPgOne + iWriteEnd > paf->iMark ){ |
int rc = apndWriteMark(paf, pFile, iWriteEnd); |
if( SQLITE_OK!=rc ) return rc; |
} |
return pFile->pMethods->xWrite(pFile, zBuf, iAmt, paf->iPgOne+iOfst); |
} |
|
/* |
** Truncate an apnd-file. |
*/ |
static int apndTruncate(sqlite3_file *pFile, sqlite_int64 size){ |
ApndFile *paf = (ApndFile *)pFile; |
pFile = ORIGFILE(pFile); |
/* The append mark goes out first so truncate failure does not lose it. */ |
if( SQLITE_OK!=apndWriteMark(paf, pFile, size) ) return SQLITE_IOERR; |
/* Truncate underlying file just past append mark */ |
return pFile->pMethods->xTruncate(pFile, paf->iMark+APND_MARK_SIZE); |
} |
|
/* |
** Sync an apnd-file. |
*/ |
static int apndSync(sqlite3_file *pFile, int flags){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xSync(pFile, flags); |
} |
|
/* |
** Return the current file-size of an apnd-file. |
** If the append mark is not yet there, the file-size is 0. |
*/ |
static int apndFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){ |
ApndFile *paf = (ApndFile *)pFile; |
*pSize = ( paf->iMark >= 0 )? (paf->iMark - paf->iPgOne) : 0; |
return SQLITE_OK; |
} |
|
/* |
** Lock an apnd-file. |
*/ |
static int apndLock(sqlite3_file *pFile, int eLock){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xLock(pFile, eLock); |
} |
|
/* |
** Unlock an apnd-file. |
*/ |
static int apndUnlock(sqlite3_file *pFile, int eLock){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xUnlock(pFile, eLock); |
} |
|
/* |
** Check if another file-handle holds a RESERVED lock on an apnd-file. |
*/ |
static int apndCheckReservedLock(sqlite3_file *pFile, int *pResOut){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xCheckReservedLock(pFile, pResOut); |
} |
|
/* |
** File control method. For custom operations on an apnd-file. |
*/ |
static int apndFileControl(sqlite3_file *pFile, int op, void *pArg){ |
ApndFile *paf = (ApndFile *)pFile; |
int rc; |
pFile = ORIGFILE(pFile); |
if( op==SQLITE_FCNTL_SIZE_HINT ) *(sqlite3_int64*)pArg += paf->iPgOne; |
rc = pFile->pMethods->xFileControl(pFile, op, pArg); |
if( rc==SQLITE_OK && op==SQLITE_FCNTL_VFSNAME ){ |
*(char**)pArg = sqlite3_mprintf("apnd(%lld)/%z", paf->iPgOne,*(char**)pArg); |
} |
return rc; |
} |
|
/* |
** Return the sector-size in bytes for an apnd-file. |
*/ |
static int apndSectorSize(sqlite3_file *pFile){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xSectorSize(pFile); |
} |
|
/* |
** Return the device characteristic flags supported by an apnd-file. |
*/ |
static int apndDeviceCharacteristics(sqlite3_file *pFile){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xDeviceCharacteristics(pFile); |
} |
|
/* Create a shared memory file mapping */ |
static int apndShmMap( |
sqlite3_file *pFile, |
int iPg, |
int pgsz, |
int bExtend, |
void volatile **pp |
){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xShmMap(pFile,iPg,pgsz,bExtend,pp); |
} |
|
/* Perform locking on a shared-memory segment */ |
static int apndShmLock(sqlite3_file *pFile, int offset, int n, int flags){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xShmLock(pFile,offset,n,flags); |
} |
|
/* Memory barrier operation on shared memory */ |
static void apndShmBarrier(sqlite3_file *pFile){ |
pFile = ORIGFILE(pFile); |
pFile->pMethods->xShmBarrier(pFile); |
} |
|
/* Unmap a shared memory segment */ |
static int apndShmUnmap(sqlite3_file *pFile, int deleteFlag){ |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xShmUnmap(pFile,deleteFlag); |
} |
|
/* Fetch a page of a memory-mapped file */ |
static int apndFetch( |
sqlite3_file *pFile, |
sqlite3_int64 iOfst, |
int iAmt, |
void **pp |
){ |
ApndFile *p = (ApndFile *)pFile; |
if( p->iMark < 0 || iOfst+iAmt > p->iMark ){ |
return SQLITE_IOERR; /* Cannot read what is not yet there. */ |
} |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xFetch(pFile, iOfst+p->iPgOne, iAmt, pp); |
} |
|
/* Release a memory-mapped page */ |
static int apndUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){ |
ApndFile *p = (ApndFile *)pFile; |
pFile = ORIGFILE(pFile); |
return pFile->pMethods->xUnfetch(pFile, iOfst+p->iPgOne, pPage); |
} |
|
/* |
** Try to read the append-mark off the end of a file. Return the |
** start of the appended database if the append-mark is present. |
** If there is no valid append-mark, return -1; |
** |
** An append-mark is only valid if the NNNNNNNN start-of-database offset |
** indicates that the appended database contains at least one page. The |
** start-of-database value must be a multiple of 512. |
*/ |
static sqlite3_int64 apndReadMark(sqlite3_int64 sz, sqlite3_file *pFile){ |
int rc, i; |
sqlite3_int64 iMark; |
int msbs = 8 * (APND_MARK_FOS_SZ-1); |
unsigned char a[APND_MARK_SIZE]; |
|
if( APND_MARK_SIZE!=(sz & 0x1ff) ) return -1; |
rc = pFile->pMethods->xRead(pFile, a, APND_MARK_SIZE, sz-APND_MARK_SIZE); |
if( rc ) return -1; |
if( memcmp(a, APND_MARK_PREFIX, APND_MARK_PREFIX_SZ)!=0 ) return -1; |
iMark = ((sqlite3_int64)(a[APND_MARK_PREFIX_SZ] & 0x7f)) << msbs; |
for(i=1; i<8; i++){ |
msbs -= 8; |
iMark |= (sqlite3_int64)a[APND_MARK_PREFIX_SZ+i]<<msbs; |
} |
if( iMark > (sz - APND_MARK_SIZE - 512) ) return -1; |
if( iMark & 0x1ff ) return -1; |
return iMark; |
} |
|
static const char apvfsSqliteHdr[] = "SQLite format 3"; |
/* |
** Check to see if the file is an appendvfs SQLite database file. |
** Return true iff it is such. Parameter sz is the file's size. |
*/ |
static int apndIsAppendvfsDatabase(sqlite3_int64 sz, sqlite3_file *pFile){ |
int rc; |
char zHdr[16]; |
sqlite3_int64 iMark = apndReadMark(sz, pFile); |
if( iMark>=0 ){ |
/* If file has the correct end-marker, the expected odd size, and the |
** SQLite DB type marker where the end-marker puts it, then it |
** is an appendvfs database. |
*/ |
rc = pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), iMark); |
if( SQLITE_OK==rc |
&& memcmp(zHdr, apvfsSqliteHdr, sizeof(zHdr))==0 |
&& (sz & 0x1ff) == APND_MARK_SIZE |
&& sz>=512+APND_MARK_SIZE |
){ |
return 1; /* It's an appendvfs database */ |
} |
} |
return 0; |
} |
|
/* |
** Check to see if the file is an ordinary SQLite database file. |
** Return true iff so. Parameter sz is the file's size. |
*/ |
static int apndIsOrdinaryDatabaseFile(sqlite3_int64 sz, sqlite3_file *pFile){ |
char zHdr[16]; |
if( apndIsAppendvfsDatabase(sz, pFile) /* rule 2 */ |
|| (sz & 0x1ff) != 0 |
|| SQLITE_OK!=pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), 0) |
|| memcmp(zHdr, apvfsSqliteHdr, sizeof(zHdr))!=0 |
){ |
return 0; |
}else{ |
return 1; |
} |
} |
|
/* |
** Open an apnd file handle. |
*/ |
static int apndOpen( |
sqlite3_vfs *pApndVfs, |
const char *zName, |
sqlite3_file *pFile, |
int flags, |
int *pOutFlags |
){ |
ApndFile *pApndFile = (ApndFile*)pFile; |
sqlite3_file *pBaseFile = ORIGFILE(pFile); |
sqlite3_vfs *pBaseVfs = ORIGVFS(pApndVfs); |
int rc; |
sqlite3_int64 sz = 0; |
if( (flags & SQLITE_OPEN_MAIN_DB)==0 ){ |
/* The appendvfs is not to be used for transient or temporary databases. |
** Just use the base VFS open to initialize the given file object and |
** open the underlying file. (Appendvfs is then unused for this file.) |
*/ |
return pBaseVfs->xOpen(pBaseVfs, zName, pFile, flags, pOutFlags); |
} |
memset(pApndFile, 0, sizeof(ApndFile)); |
pFile->pMethods = &apnd_io_methods; |
pApndFile->iMark = -1; /* Append mark not yet written */ |
|
rc = pBaseVfs->xOpen(pBaseVfs, zName, pBaseFile, flags, pOutFlags); |
if( rc==SQLITE_OK ){ |
rc = pBaseFile->pMethods->xFileSize(pBaseFile, &sz); |
} |
if( rc ){ |
pBaseFile->pMethods->xClose(pBaseFile); |
pFile->pMethods = 0; |
return rc; |
} |
if( apndIsOrdinaryDatabaseFile(sz, pBaseFile) ){ |
/* The file being opened appears to be just an ordinary DB. Copy |
** the base dispatch-table so this instance mimics the base VFS. |
*/ |
memmove(pApndFile, pBaseFile, pBaseVfs->szOsFile); |
return SQLITE_OK; |
} |
pApndFile->iPgOne = apndReadMark(sz, pFile); |
if( pApndFile->iPgOne>=0 ){ |
pApndFile->iMark = sz - APND_MARK_SIZE; /* Append mark found */ |
return SQLITE_OK; |
} |
if( (flags & SQLITE_OPEN_CREATE)==0 ){ |
pBaseFile->pMethods->xClose(pBaseFile); |
rc = SQLITE_CANTOPEN; |
pFile->pMethods = 0; |
}else{ |
/* Round newly added appendvfs location to #define'd page boundary. |
** Note that nothing has yet been written to the underlying file. |
** The append mark will be written along with first content write. |
** Until then, paf->iMark value indicates it is not yet written. |
*/ |
pApndFile->iPgOne = APND_START_ROUNDUP(sz); |
} |
return rc; |
} |
|
/* |
** Delete an apnd file. |
** For an appendvfs, this could mean delete the appendvfs portion, |
** leaving the appendee as it was before it gained an appendvfs. |
** For now, this code deletes the underlying file too. |
*/ |
static int apndDelete(sqlite3_vfs *pVfs, const char *zPath, int dirSync){ |
return ORIGVFS(pVfs)->xDelete(ORIGVFS(pVfs), zPath, dirSync); |
} |
|
/* |
** All other VFS methods are pass-thrus. |
*/ |
static int apndAccess( |
sqlite3_vfs *pVfs, |
const char *zPath, |
int flags, |
int *pResOut |
){ |
return ORIGVFS(pVfs)->xAccess(ORIGVFS(pVfs), zPath, flags, pResOut); |
} |
static int apndFullPathname( |
sqlite3_vfs *pVfs, |
const char *zPath, |
int nOut, |
char *zOut |
){ |
return ORIGVFS(pVfs)->xFullPathname(ORIGVFS(pVfs),zPath,nOut,zOut); |
} |
static void *apndDlOpen(sqlite3_vfs *pVfs, const char *zPath){ |
return ORIGVFS(pVfs)->xDlOpen(ORIGVFS(pVfs), zPath); |
} |
static void apndDlError(sqlite3_vfs *pVfs, int nByte, char *zErrMsg){ |
ORIGVFS(pVfs)->xDlError(ORIGVFS(pVfs), nByte, zErrMsg); |
} |
static void (*apndDlSym(sqlite3_vfs *pVfs, void *p, const char *zSym))(void){ |
return ORIGVFS(pVfs)->xDlSym(ORIGVFS(pVfs), p, zSym); |
} |
static void apndDlClose(sqlite3_vfs *pVfs, void *pHandle){ |
ORIGVFS(pVfs)->xDlClose(ORIGVFS(pVfs), pHandle); |
} |
static int apndRandomness(sqlite3_vfs *pVfs, int nByte, char *zBufOut){ |
return ORIGVFS(pVfs)->xRandomness(ORIGVFS(pVfs), nByte, zBufOut); |
} |
static int apndSleep(sqlite3_vfs *pVfs, int nMicro){ |
return ORIGVFS(pVfs)->xSleep(ORIGVFS(pVfs), nMicro); |
} |
static int apndCurrentTime(sqlite3_vfs *pVfs, double *pTimeOut){ |
return ORIGVFS(pVfs)->xCurrentTime(ORIGVFS(pVfs), pTimeOut); |
} |
static int apndGetLastError(sqlite3_vfs *pVfs, int a, char *b){ |
return ORIGVFS(pVfs)->xGetLastError(ORIGVFS(pVfs), a, b); |
} |
static int apndCurrentTimeInt64(sqlite3_vfs *pVfs, sqlite3_int64 *p){ |
return ORIGVFS(pVfs)->xCurrentTimeInt64(ORIGVFS(pVfs), p); |
} |
static int apndSetSystemCall( |
sqlite3_vfs *pVfs, |
const char *zName, |
sqlite3_syscall_ptr pCall |
){ |
return ORIGVFS(pVfs)->xSetSystemCall(ORIGVFS(pVfs),zName,pCall); |
} |
static sqlite3_syscall_ptr apndGetSystemCall( |
sqlite3_vfs *pVfs, |
const char *zName |
){ |
return ORIGVFS(pVfs)->xGetSystemCall(ORIGVFS(pVfs),zName); |
} |
static const char *apndNextSystemCall(sqlite3_vfs *pVfs, const char *zName){ |
return ORIGVFS(pVfs)->xNextSystemCall(ORIGVFS(pVfs), zName); |
} |
|
|
#ifdef _WIN32 |
|
#endif |
/* |
** This routine is called when the extension is loaded. |
** Register the new VFS. |
*/ |
int sqlite3_appendvfs_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
int rc = SQLITE_OK; |
sqlite3_vfs *pOrig; |
SQLITE_EXTENSION_INIT2(pApi); |
(void)pzErrMsg; |
(void)db; |
pOrig = sqlite3_vfs_find(0); |
apnd_vfs.iVersion = pOrig->iVersion; |
apnd_vfs.pAppData = pOrig; |
apnd_vfs.szOsFile = pOrig->szOsFile + sizeof(ApndFile); |
rc = sqlite3_vfs_register(&apnd_vfs, 0); |
#ifdef APPENDVFS_TEST |
if( rc==SQLITE_OK ){ |
rc = sqlite3_auto_extension((void(*)(void))apndvfsRegister); |
} |
#endif |
if( rc==SQLITE_OK ) rc = SQLITE_OK_LOAD_PERMANENTLY; |
return rc; |
} |
|
/************************* End ../ext/misc/appendvfs.c ********************/ |
/************************* Begin ../ext/misc/memtrace.c ******************/ |
/* |
** 2019-01-21 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
************************************************************************* |
** |
** This file implements an extension that uses the SQLITE_CONFIG_MALLOC |
** mechanism to add a tracing layer on top of SQLite. If this extension |
** is registered prior to sqlite3_initialize(), it will cause all memory |
** allocation activities to be logged on standard output, or to some other |
** FILE specified by the initializer. |
** |
** This file needs to be compiled into the application that uses it. |
** |
** This extension is used to implement the --memtrace option of the |
** command-line shell. |
*/ |
#include <assert.h> |
#include <string.h> |
#include <stdio.h> |
|
/* The original memory allocation routines */ |
static sqlite3_mem_methods memtraceBase; |
static FILE *memtraceOut; |
|
/* Methods that trace memory allocations */ |
static void *memtraceMalloc(int n){ |
if( memtraceOut ){ |
fprintf(memtraceOut, "MEMTRACE: allocate %d bytes\n", |
memtraceBase.xRoundup(n)); |
} |
return memtraceBase.xMalloc(n); |
} |
static void memtraceFree(void *p){ |
if( p==0 ) return; |
if( memtraceOut ){ |
fprintf(memtraceOut, "MEMTRACE: free %d bytes\n", memtraceBase.xSize(p)); |
} |
memtraceBase.xFree(p); |
} |
static void *memtraceRealloc(void *p, int n){ |
if( p==0 ) return memtraceMalloc(n); |
if( n==0 ){ |
memtraceFree(p); |
return 0; |
} |
if( memtraceOut ){ |
fprintf(memtraceOut, "MEMTRACE: resize %d -> %d bytes\n", |
memtraceBase.xSize(p), memtraceBase.xRoundup(n)); |
} |
return memtraceBase.xRealloc(p, n); |
} |
static int memtraceSize(void *p){ |
return memtraceBase.xSize(p); |
} |
static int memtraceRoundup(int n){ |
return memtraceBase.xRoundup(n); |
} |
static int memtraceInit(void *p){ |
return memtraceBase.xInit(p); |
} |
static void memtraceShutdown(void *p){ |
memtraceBase.xShutdown(p); |
} |
|
/* The substitute memory allocator */ |
static sqlite3_mem_methods ersaztMethods = { |
memtraceMalloc, |
memtraceFree, |
memtraceRealloc, |
memtraceSize, |
memtraceRoundup, |
memtraceInit, |
memtraceShutdown, |
0 |
}; |
|
/* Begin tracing memory allocations to out. */ |
int sqlite3MemTraceActivate(FILE *out){ |
int rc = SQLITE_OK; |
if( memtraceBase.xMalloc==0 ){ |
rc = sqlite3_config(SQLITE_CONFIG_GETMALLOC, &memtraceBase); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_config(SQLITE_CONFIG_MALLOC, &ersaztMethods); |
} |
} |
memtraceOut = out; |
return rc; |
} |
|
/* Deactivate memory tracing */ |
int sqlite3MemTraceDeactivate(void){ |
int rc = SQLITE_OK; |
if( memtraceBase.xMalloc!=0 ){ |
rc = sqlite3_config(SQLITE_CONFIG_MALLOC, &memtraceBase); |
if( rc==SQLITE_OK ){ |
memset(&memtraceBase, 0, sizeof(memtraceBase)); |
} |
} |
memtraceOut = 0; |
return rc; |
} |
|
/************************* End ../ext/misc/memtrace.c ********************/ |
/************************* Begin ../ext/misc/uint.c ******************/ |
/* |
** 2020-04-14 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** This SQLite extension implements the UINT collating sequence. |
** |
** UINT works like BINARY for text, except that embedded strings |
** of digits compare in numeric order. |
** |
** * Leading zeros are handled properly, in the sense that |
** they do not mess of the maginitude comparison of embedded |
** strings of digits. "x00123y" is equal to "x123y". |
** |
** * Only unsigned integers are recognized. Plus and minus |
** signs are ignored. Decimal points and exponential notation |
** are ignored. |
** |
** * Embedded integers can be of arbitrary length. Comparison |
** is *not* limited integers that can be expressed as a |
** 64-bit machine integer. |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <assert.h> |
#include <string.h> |
#include <ctype.h> |
|
/* |
** Compare text in lexicographic order, except strings of digits |
** compare in numeric order. |
*/ |
static int uintCollFunc( |
void *notUsed, |
int nKey1, const void *pKey1, |
int nKey2, const void *pKey2 |
){ |
const unsigned char *zA = (const unsigned char*)pKey1; |
const unsigned char *zB = (const unsigned char*)pKey2; |
int i=0, j=0, x; |
(void)notUsed; |
while( i<nKey1 && j<nKey2 ){ |
x = zA[i] - zB[j]; |
if( isdigit(zA[i]) ){ |
int k; |
if( !isdigit(zB[j]) ) return x; |
while( i<nKey1 && zA[i]=='0' ){ i++; } |
while( j<nKey2 && zB[j]=='0' ){ j++; } |
k = 0; |
while( i+k<nKey1 && isdigit(zA[i+k]) |
&& j+k<nKey2 && isdigit(zB[j+k]) ){ |
k++; |
} |
if( i+k<nKey1 && isdigit(zA[i+k]) ){ |
return +1; |
}else if( j+k<nKey2 && isdigit(zB[j+k]) ){ |
return -1; |
}else{ |
x = memcmp(zA+i, zB+j, k); |
if( x ) return x; |
i += k; |
j += k; |
} |
}else if( x ){ |
return x; |
}else{ |
i++; |
j++; |
} |
} |
return (nKey1 - i) - (nKey2 - j); |
} |
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_uint_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
SQLITE_EXTENSION_INIT2(pApi); |
(void)pzErrMsg; /* Unused parameter */ |
return sqlite3_create_collation(db, "uint", SQLITE_UTF8, 0, uintCollFunc); |
} |
|
/************************* End ../ext/misc/uint.c ********************/ |
/************************* Begin ../ext/misc/decimal.c ******************/ |
/* |
** 2020-06-22 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** Routines to implement arbitrary-precision decimal math. |
** |
** The focus here is on simplicity and correctness, not performance. |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <assert.h> |
#include <string.h> |
#include <ctype.h> |
#include <stdlib.h> |
|
/* Mark a function parameter as unused, to suppress nuisance compiler |
** warnings. */ |
#ifndef UNUSED_PARAMETER |
# define UNUSED_PARAMETER(X) (void)(X) |
#endif |
|
|
/* A decimal object */ |
typedef struct Decimal Decimal; |
struct Decimal { |
char sign; /* 0 for positive, 1 for negative */ |
char oom; /* True if an OOM is encountered */ |
char isNull; /* True if holds a NULL rather than a number */ |
char isInit; /* True upon initialization */ |
int nDigit; /* Total number of digits */ |
int nFrac; /* Number of digits to the right of the decimal point */ |
signed char *a; /* Array of digits. Most significant first. */ |
}; |
|
/* |
** Release memory held by a Decimal, but do not free the object itself. |
*/ |
static void decimal_clear(Decimal *p){ |
sqlite3_free(p->a); |
} |
|
/* |
** Destroy a Decimal object |
*/ |
static void decimal_free(Decimal *p){ |
if( p ){ |
decimal_clear(p); |
sqlite3_free(p); |
} |
} |
|
/* |
** Allocate a new Decimal object. Initialize it to the number given |
** by the input string. |
*/ |
static Decimal *decimal_new( |
sqlite3_context *pCtx, |
sqlite3_value *pIn, |
int nAlt, |
const unsigned char *zAlt |
){ |
Decimal *p; |
int n, i; |
const unsigned char *zIn; |
int iExp = 0; |
p = sqlite3_malloc( sizeof(*p) ); |
if( p==0 ) goto new_no_mem; |
p->sign = 0; |
p->oom = 0; |
p->isInit = 1; |
p->isNull = 0; |
p->nDigit = 0; |
p->nFrac = 0; |
if( zAlt ){ |
n = nAlt, |
zIn = zAlt; |
}else{ |
if( sqlite3_value_type(pIn)==SQLITE_NULL ){ |
p->a = 0; |
p->isNull = 1; |
return p; |
} |
n = sqlite3_value_bytes(pIn); |
zIn = sqlite3_value_text(pIn); |
} |
p->a = sqlite3_malloc64( n+1 ); |
if( p->a==0 ) goto new_no_mem; |
for(i=0; isspace(zIn[i]); i++){} |
if( zIn[i]=='-' ){ |
p->sign = 1; |
i++; |
}else if( zIn[i]=='+' ){ |
i++; |
} |
while( i<n && zIn[i]=='0' ) i++; |
while( i<n ){ |
char c = zIn[i]; |
if( c>='0' && c<='9' ){ |
p->a[p->nDigit++] = c - '0'; |
}else if( c=='.' ){ |
p->nFrac = p->nDigit + 1; |
}else if( c=='e' || c=='E' ){ |
int j = i+1; |
int neg = 0; |
if( j>=n ) break; |
if( zIn[j]=='-' ){ |
neg = 1; |
j++; |
}else if( zIn[j]=='+' ){ |
j++; |
} |
while( j<n && iExp<1000000 ){ |
if( zIn[j]>='0' && zIn[j]<='9' ){ |
iExp = iExp*10 + zIn[j] - '0'; |
} |
j++; |
} |
if( neg ) iExp = -iExp; |
break; |
} |
i++; |
} |
if( p->nFrac ){ |
p->nFrac = p->nDigit - (p->nFrac - 1); |
} |
if( iExp>0 ){ |
if( p->nFrac>0 ){ |
if( iExp<=p->nFrac ){ |
p->nFrac -= iExp; |
iExp = 0; |
}else{ |
iExp -= p->nFrac; |
p->nFrac = 0; |
} |
} |
if( iExp>0 ){ |
p->a = sqlite3_realloc64(p->a, p->nDigit + iExp + 1 ); |
if( p->a==0 ) goto new_no_mem; |
memset(p->a+p->nDigit, 0, iExp); |
p->nDigit += iExp; |
} |
}else if( iExp<0 ){ |
int nExtra; |
iExp = -iExp; |
nExtra = p->nDigit - p->nFrac - 1; |
if( nExtra ){ |
if( nExtra>=iExp ){ |
p->nFrac += iExp; |
iExp = 0; |
}else{ |
iExp -= nExtra; |
p->nFrac = p->nDigit - 1; |
} |
} |
if( iExp>0 ){ |
p->a = sqlite3_realloc64(p->a, p->nDigit + iExp + 1 ); |
if( p->a==0 ) goto new_no_mem; |
memmove(p->a+iExp, p->a, p->nDigit); |
memset(p->a, 0, iExp); |
p->nDigit += iExp; |
p->nFrac += iExp; |
} |
} |
return p; |
|
new_no_mem: |
if( pCtx ) sqlite3_result_error_nomem(pCtx); |
sqlite3_free(p); |
return 0; |
} |
|
/* |
** Make the given Decimal the result. |
*/ |
static void decimal_result(sqlite3_context *pCtx, Decimal *p){ |
char *z; |
int i, j; |
int n; |
if( p==0 || p->oom ){ |
sqlite3_result_error_nomem(pCtx); |
return; |
} |
if( p->isNull ){ |
sqlite3_result_null(pCtx); |
return; |
} |
z = sqlite3_malloc( p->nDigit+4 ); |
if( z==0 ){ |
sqlite3_result_error_nomem(pCtx); |
return; |
} |
i = 0; |
if( p->nDigit==0 || (p->nDigit==1 && p->a[0]==0) ){ |
p->sign = 0; |
} |
if( p->sign ){ |
z[0] = '-'; |
i = 1; |
} |
n = p->nDigit - p->nFrac; |
if( n<=0 ){ |
z[i++] = '0'; |
} |
j = 0; |
while( n>1 && p->a[j]==0 ){ |
j++; |
n--; |
} |
while( n>0 ){ |
z[i++] = p->a[j] + '0'; |
j++; |
n--; |
} |
if( p->nFrac ){ |
z[i++] = '.'; |
do{ |
z[i++] = p->a[j] + '0'; |
j++; |
}while( j<p->nDigit ); |
} |
z[i] = 0; |
sqlite3_result_text(pCtx, z, i, sqlite3_free); |
} |
|
/* |
** SQL Function: decimal(X) |
** |
** Convert input X into decimal and then back into text |
*/ |
static void decimalFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
Decimal *p = decimal_new(context, argv[0], 0, 0); |
UNUSED_PARAMETER(argc); |
decimal_result(context, p); |
decimal_free(p); |
} |
|
/* |
** Compare to Decimal objects. Return negative, 0, or positive if the |
** first object is less than, equal to, or greater than the second. |
** |
** Preconditions for this routine: |
** |
** pA!=0 |
** pA->isNull==0 |
** pB!=0 |
** pB->isNull==0 |
*/ |
static int decimal_cmp(const Decimal *pA, const Decimal *pB){ |
int nASig, nBSig, rc, n; |
if( pA->sign!=pB->sign ){ |
return pA->sign ? -1 : +1; |
} |
if( pA->sign ){ |
const Decimal *pTemp = pA; |
pA = pB; |
pB = pTemp; |
} |
nASig = pA->nDigit - pA->nFrac; |
nBSig = pB->nDigit - pB->nFrac; |
if( nASig!=nBSig ){ |
return nASig - nBSig; |
} |
n = pA->nDigit; |
if( n>pB->nDigit ) n = pB->nDigit; |
rc = memcmp(pA->a, pB->a, n); |
if( rc==0 ){ |
rc = pA->nDigit - pB->nDigit; |
} |
return rc; |
} |
|
/* |
** SQL Function: decimal_cmp(X, Y) |
** |
** Return negative, zero, or positive if X is less then, equal to, or |
** greater than Y. |
*/ |
static void decimalCmpFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
Decimal *pA = 0, *pB = 0; |
int rc; |
|
UNUSED_PARAMETER(argc); |
pA = decimal_new(context, argv[0], 0, 0); |
if( pA==0 || pA->isNull ) goto cmp_done; |
pB = decimal_new(context, argv[1], 0, 0); |
if( pB==0 || pB->isNull ) goto cmp_done; |
rc = decimal_cmp(pA, pB); |
if( rc<0 ) rc = -1; |
else if( rc>0 ) rc = +1; |
sqlite3_result_int(context, rc); |
cmp_done: |
decimal_free(pA); |
decimal_free(pB); |
} |
|
/* |
** Expand the Decimal so that it has a least nDigit digits and nFrac |
** digits to the right of the decimal point. |
*/ |
static void decimal_expand(Decimal *p, int nDigit, int nFrac){ |
int nAddSig; |
int nAddFrac; |
if( p==0 ) return; |
nAddFrac = nFrac - p->nFrac; |
nAddSig = (nDigit - p->nDigit) - nAddFrac; |
if( nAddFrac==0 && nAddSig==0 ) return; |
p->a = sqlite3_realloc64(p->a, nDigit+1); |
if( p->a==0 ){ |
p->oom = 1; |
return; |
} |
if( nAddSig ){ |
memmove(p->a+nAddSig, p->a, p->nDigit); |
memset(p->a, 0, nAddSig); |
p->nDigit += nAddSig; |
} |
if( nAddFrac ){ |
memset(p->a+p->nDigit, 0, nAddFrac); |
p->nDigit += nAddFrac; |
p->nFrac += nAddFrac; |
} |
} |
|
/* |
** Add the value pB into pA. |
** |
** Both pA and pB might become denormalized by this routine. |
*/ |
static void decimal_add(Decimal *pA, Decimal *pB){ |
int nSig, nFrac, nDigit; |
int i, rc; |
if( pA==0 ){ |
return; |
} |
if( pA->oom || pB==0 || pB->oom ){ |
pA->oom = 1; |
return; |
} |
if( pA->isNull || pB->isNull ){ |
pA->isNull = 1; |
return; |
} |
nSig = pA->nDigit - pA->nFrac; |
if( nSig && pA->a[0]==0 ) nSig--; |
if( nSig<pB->nDigit-pB->nFrac ){ |
nSig = pB->nDigit - pB->nFrac; |
} |
nFrac = pA->nFrac; |
if( nFrac<pB->nFrac ) nFrac = pB->nFrac; |
nDigit = nSig + nFrac + 1; |
decimal_expand(pA, nDigit, nFrac); |
decimal_expand(pB, nDigit, nFrac); |
if( pA->oom || pB->oom ){ |
pA->oom = 1; |
}else{ |
if( pA->sign==pB->sign ){ |
int carry = 0; |
for(i=nDigit-1; i>=0; i--){ |
int x = pA->a[i] + pB->a[i] + carry; |
if( x>=10 ){ |
carry = 1; |
pA->a[i] = x - 10; |
}else{ |
carry = 0; |
pA->a[i] = x; |
} |
} |
}else{ |
signed char *aA, *aB; |
int borrow = 0; |
rc = memcmp(pA->a, pB->a, nDigit); |
if( rc<0 ){ |
aA = pB->a; |
aB = pA->a; |
pA->sign = !pA->sign; |
}else{ |
aA = pA->a; |
aB = pB->a; |
} |
for(i=nDigit-1; i>=0; i--){ |
int x = aA[i] - aB[i] - borrow; |
if( x<0 ){ |
pA->a[i] = x+10; |
borrow = 1; |
}else{ |
pA->a[i] = x; |
borrow = 0; |
} |
} |
} |
} |
} |
|
/* |
** Compare text in decimal order. |
*/ |
static int decimalCollFunc( |
void *notUsed, |
int nKey1, const void *pKey1, |
int nKey2, const void *pKey2 |
){ |
const unsigned char *zA = (const unsigned char*)pKey1; |
const unsigned char *zB = (const unsigned char*)pKey2; |
Decimal *pA = decimal_new(0, 0, nKey1, zA); |
Decimal *pB = decimal_new(0, 0, nKey2, zB); |
int rc; |
UNUSED_PARAMETER(notUsed); |
if( pA==0 || pB==0 ){ |
rc = 0; |
}else{ |
rc = decimal_cmp(pA, pB); |
} |
decimal_free(pA); |
decimal_free(pB); |
return rc; |
} |
|
|
/* |
** SQL Function: decimal_add(X, Y) |
** decimal_sub(X, Y) |
** |
** Return the sum or difference of X and Y. |
*/ |
static void decimalAddFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
Decimal *pA = decimal_new(context, argv[0], 0, 0); |
Decimal *pB = decimal_new(context, argv[1], 0, 0); |
UNUSED_PARAMETER(argc); |
decimal_add(pA, pB); |
decimal_result(context, pA); |
decimal_free(pA); |
decimal_free(pB); |
} |
static void decimalSubFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
Decimal *pA = decimal_new(context, argv[0], 0, 0); |
Decimal *pB = decimal_new(context, argv[1], 0, 0); |
UNUSED_PARAMETER(argc); |
if( pB==0 ) return; |
pB->sign = !pB->sign; |
decimal_add(pA, pB); |
decimal_result(context, pA); |
decimal_free(pA); |
decimal_free(pB); |
} |
|
/* Aggregate funcion: decimal_sum(X) |
** |
** Works like sum() except that it uses decimal arithmetic for unlimited |
** precision. |
*/ |
static void decimalSumStep( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
Decimal *p; |
Decimal *pArg; |
UNUSED_PARAMETER(argc); |
p = sqlite3_aggregate_context(context, sizeof(*p)); |
if( p==0 ) return; |
if( !p->isInit ){ |
p->isInit = 1; |
p->a = sqlite3_malloc(2); |
if( p->a==0 ){ |
p->oom = 1; |
}else{ |
p->a[0] = 0; |
} |
p->nDigit = 1; |
p->nFrac = 0; |
} |
if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; |
pArg = decimal_new(context, argv[0], 0, 0); |
decimal_add(p, pArg); |
decimal_free(pArg); |
} |
static void decimalSumInverse( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
Decimal *p; |
Decimal *pArg; |
UNUSED_PARAMETER(argc); |
p = sqlite3_aggregate_context(context, sizeof(*p)); |
if( p==0 ) return; |
if( sqlite3_value_type(argv[0])==SQLITE_NULL ) return; |
pArg = decimal_new(context, argv[0], 0, 0); |
if( pArg ) pArg->sign = !pArg->sign; |
decimal_add(p, pArg); |
decimal_free(pArg); |
} |
static void decimalSumValue(sqlite3_context *context){ |
Decimal *p = sqlite3_aggregate_context(context, 0); |
if( p==0 ) return; |
decimal_result(context, p); |
} |
static void decimalSumFinalize(sqlite3_context *context){ |
Decimal *p = sqlite3_aggregate_context(context, 0); |
if( p==0 ) return; |
decimal_result(context, p); |
decimal_clear(p); |
} |
|
/* |
** SQL Function: decimal_mul(X, Y) |
** |
** Return the product of X and Y. |
** |
** All significant digits after the decimal point are retained. |
** Trailing zeros after the decimal point are omitted as long as |
** the number of digits after the decimal point is no less than |
** either the number of digits in either input. |
*/ |
static void decimalMulFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
Decimal *pA = decimal_new(context, argv[0], 0, 0); |
Decimal *pB = decimal_new(context, argv[1], 0, 0); |
signed char *acc = 0; |
int i, j, k; |
int minFrac; |
UNUSED_PARAMETER(argc); |
if( pA==0 || pA->oom || pA->isNull |
|| pB==0 || pB->oom || pB->isNull |
){ |
goto mul_end; |
} |
acc = sqlite3_malloc64( pA->nDigit + pB->nDigit + 2 ); |
if( acc==0 ){ |
sqlite3_result_error_nomem(context); |
goto mul_end; |
} |
memset(acc, 0, pA->nDigit + pB->nDigit + 2); |
minFrac = pA->nFrac; |
if( pB->nFrac<minFrac ) minFrac = pB->nFrac; |
for(i=pA->nDigit-1; i>=0; i--){ |
signed char f = pA->a[i]; |
int carry = 0, x; |
for(j=pB->nDigit-1, k=i+j+3; j>=0; j--, k--){ |
x = acc[k] + f*pB->a[j] + carry; |
acc[k] = x%10; |
carry = x/10; |
} |
x = acc[k] + carry; |
acc[k] = x%10; |
acc[k-1] += x/10; |
} |
sqlite3_free(pA->a); |
pA->a = acc; |
acc = 0; |
pA->nDigit += pB->nDigit + 2; |
pA->nFrac += pB->nFrac; |
pA->sign ^= pB->sign; |
while( pA->nFrac>minFrac && pA->a[pA->nDigit-1]==0 ){ |
pA->nFrac--; |
pA->nDigit--; |
} |
decimal_result(context, pA); |
|
mul_end: |
sqlite3_free(acc); |
decimal_free(pA); |
decimal_free(pB); |
} |
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_decimal_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
int rc = SQLITE_OK; |
static const struct { |
const char *zFuncName; |
int nArg; |
void (*xFunc)(sqlite3_context*,int,sqlite3_value**); |
} aFunc[] = { |
{ "decimal", 1, decimalFunc }, |
{ "decimal_cmp", 2, decimalCmpFunc }, |
{ "decimal_add", 2, decimalAddFunc }, |
{ "decimal_sub", 2, decimalSubFunc }, |
{ "decimal_mul", 2, decimalMulFunc }, |
}; |
unsigned int i; |
(void)pzErrMsg; /* Unused parameter */ |
|
SQLITE_EXTENSION_INIT2(pApi); |
|
for(i=0; i<sizeof(aFunc)/sizeof(aFunc[0]) && rc==SQLITE_OK; i++){ |
rc = sqlite3_create_function(db, aFunc[i].zFuncName, aFunc[i].nArg, |
SQLITE_UTF8|SQLITE_INNOCUOUS|SQLITE_DETERMINISTIC, |
0, aFunc[i].xFunc, 0, 0); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_window_function(db, "decimal_sum", 1, |
SQLITE_UTF8|SQLITE_INNOCUOUS|SQLITE_DETERMINISTIC, 0, |
decimalSumStep, decimalSumFinalize, |
decimalSumValue, decimalSumInverse, 0); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_collation(db, "decimal", SQLITE_UTF8, |
0, decimalCollFunc); |
} |
return rc; |
} |
|
/************************* End ../ext/misc/decimal.c ********************/ |
/************************* Begin ../ext/misc/ieee754.c ******************/ |
/* |
** 2013-04-17 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** This SQLite extension implements functions for the exact display |
** and input of IEEE754 Binary64 floating-point numbers. |
** |
** ieee754(X) |
** ieee754(Y,Z) |
** |
** In the first form, the value X should be a floating-point number. |
** The function will return a string of the form 'ieee754(Y,Z)' where |
** Y and Z are integers such that X==Y*pow(2,Z). |
** |
** In the second form, Y and Z are integers which are the mantissa and |
** base-2 exponent of a new floating point number. The function returns |
** a floating-point value equal to Y*pow(2,Z). |
** |
** Examples: |
** |
** ieee754(2.0) -> 'ieee754(2,0)' |
** ieee754(45.25) -> 'ieee754(181,-2)' |
** ieee754(2, 0) -> 2.0 |
** ieee754(181, -2) -> 45.25 |
** |
** Two additional functions break apart the one-argument ieee754() |
** result into separate integer values: |
** |
** ieee754_mantissa(45.25) -> 181 |
** ieee754_exponent(45.25) -> -2 |
** |
** These functions convert binary64 numbers into blobs and back again. |
** |
** ieee754_from_blob(x'3ff0000000000000') -> 1.0 |
** ieee754_to_blob(1.0) -> x'3ff0000000000000' |
** |
** In all single-argument functions, if the argument is an 8-byte blob |
** then that blob is interpreted as a big-endian binary64 value. |
** |
** |
** EXACT DECIMAL REPRESENTATION OF BINARY64 VALUES |
** ----------------------------------------------- |
** |
** This extension in combination with the separate 'decimal' extension |
** can be used to compute the exact decimal representation of binary64 |
** values. To begin, first compute a table of exponent values: |
** |
** CREATE TABLE pow2(x INTEGER PRIMARY KEY, v TEXT); |
** WITH RECURSIVE c(x,v) AS ( |
** VALUES(0,'1') |
** UNION ALL |
** SELECT x+1, decimal_mul(v,'2') FROM c WHERE x+1<=971 |
** ) INSERT INTO pow2(x,v) SELECT x, v FROM c; |
** WITH RECURSIVE c(x,v) AS ( |
** VALUES(-1,'0.5') |
** UNION ALL |
** SELECT x-1, decimal_mul(v,'0.5') FROM c WHERE x-1>=-1075 |
** ) INSERT INTO pow2(x,v) SELECT x, v FROM c; |
** |
** Then, to compute the exact decimal representation of a floating |
** point value (the value 47.49 is used in the example) do: |
** |
** WITH c(n) AS (VALUES(47.49)) |
** ---------------^^^^^---- Replace with whatever you want |
** SELECT decimal_mul(ieee754_mantissa(c.n),pow2.v) |
** FROM pow2, c WHERE pow2.x=ieee754_exponent(c.n); |
** |
** Here is a query to show various boundry values for the binary64 |
** number format: |
** |
** WITH c(name,bin) AS (VALUES |
** ('minimum positive value', x'0000000000000001'), |
** ('maximum subnormal value', x'000fffffffffffff'), |
** ('mininum positive nornal value', x'0010000000000000'), |
** ('maximum value', x'7fefffffffffffff')) |
** SELECT c.name, decimal_mul(ieee754_mantissa(c.bin),pow2.v) |
** FROM pow2, c WHERE pow2.x=ieee754_exponent(c.bin); |
** |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <assert.h> |
#include <string.h> |
|
/* Mark a function parameter as unused, to suppress nuisance compiler |
** warnings. */ |
#ifndef UNUSED_PARAMETER |
# define UNUSED_PARAMETER(X) (void)(X) |
#endif |
|
/* |
** Implementation of the ieee754() function |
*/ |
static void ieee754func( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
if( argc==1 ){ |
sqlite3_int64 m, a; |
double r; |
int e; |
int isNeg; |
char zResult[100]; |
assert( sizeof(m)==sizeof(r) ); |
if( sqlite3_value_type(argv[0])==SQLITE_BLOB |
&& sqlite3_value_bytes(argv[0])==sizeof(r) |
){ |
const unsigned char *x = sqlite3_value_blob(argv[0]); |
unsigned int i; |
sqlite3_uint64 v = 0; |
for(i=0; i<sizeof(r); i++){ |
v = (v<<8) | x[i]; |
} |
memcpy(&r, &v, sizeof(r)); |
}else{ |
r = sqlite3_value_double(argv[0]); |
} |
if( r<0.0 ){ |
isNeg = 1; |
r = -r; |
}else{ |
isNeg = 0; |
} |
memcpy(&a,&r,sizeof(a)); |
if( a==0 ){ |
e = 0; |
m = 0; |
}else{ |
e = a>>52; |
m = a & ((((sqlite3_int64)1)<<52)-1); |
if( e==0 ){ |
m <<= 1; |
}else{ |
m |= ((sqlite3_int64)1)<<52; |
} |
while( e<1075 && m>0 && (m&1)==0 ){ |
m >>= 1; |
e++; |
} |
if( isNeg ) m = -m; |
} |
switch( *(int*)sqlite3_user_data(context) ){ |
case 0: |
sqlite3_snprintf(sizeof(zResult), zResult, "ieee754(%lld,%d)", |
m, e-1075); |
sqlite3_result_text(context, zResult, -1, SQLITE_TRANSIENT); |
break; |
case 1: |
sqlite3_result_int64(context, m); |
break; |
case 2: |
sqlite3_result_int(context, e-1075); |
break; |
} |
}else{ |
sqlite3_int64 m, e, a; |
double r; |
int isNeg = 0; |
m = sqlite3_value_int64(argv[0]); |
e = sqlite3_value_int64(argv[1]); |
|
/* Limit the range of e. Ticket 22dea1cfdb9151e4 2021-03-02 */ |
if( e>10000 ){ |
e = 10000; |
}else if( e<-10000 ){ |
e = -10000; |
} |
|
if( m<0 ){ |
isNeg = 1; |
m = -m; |
if( m<0 ) return; |
}else if( m==0 && e>-1000 && e<1000 ){ |
sqlite3_result_double(context, 0.0); |
return; |
} |
while( (m>>32)&0xffe00000 ){ |
m >>= 1; |
e++; |
} |
while( m!=0 && ((m>>32)&0xfff00000)==0 ){ |
m <<= 1; |
e--; |
} |
e += 1075; |
if( e<=0 ){ |
/* Subnormal */ |
m >>= 1-e; |
e = 0; |
}else if( e>0x7ff ){ |
e = 0x7ff; |
} |
a = m & ((((sqlite3_int64)1)<<52)-1); |
a |= e<<52; |
if( isNeg ) a |= ((sqlite3_uint64)1)<<63; |
memcpy(&r, &a, sizeof(r)); |
sqlite3_result_double(context, r); |
} |
} |
|
/* |
** Functions to convert between blobs and floats. |
*/ |
static void ieee754func_from_blob( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
UNUSED_PARAMETER(argc); |
if( sqlite3_value_type(argv[0])==SQLITE_BLOB |
&& sqlite3_value_bytes(argv[0])==sizeof(double) |
){ |
double r; |
const unsigned char *x = sqlite3_value_blob(argv[0]); |
unsigned int i; |
sqlite3_uint64 v = 0; |
for(i=0; i<sizeof(r); i++){ |
v = (v<<8) | x[i]; |
} |
memcpy(&r, &v, sizeof(r)); |
sqlite3_result_double(context, r); |
} |
} |
static void ieee754func_to_blob( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
UNUSED_PARAMETER(argc); |
if( sqlite3_value_type(argv[0])==SQLITE_FLOAT |
|| sqlite3_value_type(argv[0])==SQLITE_INTEGER |
){ |
double r = sqlite3_value_double(argv[0]); |
sqlite3_uint64 v; |
unsigned char a[sizeof(r)]; |
unsigned int i; |
memcpy(&v, &r, sizeof(r)); |
for(i=1; i<=sizeof(r); i++){ |
a[sizeof(r)-i] = v&0xff; |
v >>= 8; |
} |
sqlite3_result_blob(context, a, sizeof(r), SQLITE_TRANSIENT); |
} |
} |
|
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_ieee_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
static const struct { |
char *zFName; |
int nArg; |
int iAux; |
void (*xFunc)(sqlite3_context*,int,sqlite3_value**); |
} aFunc[] = { |
{ "ieee754", 1, 0, ieee754func }, |
{ "ieee754", 2, 0, ieee754func }, |
{ "ieee754_mantissa", 1, 1, ieee754func }, |
{ "ieee754_exponent", 1, 2, ieee754func }, |
{ "ieee754_to_blob", 1, 0, ieee754func_to_blob }, |
{ "ieee754_from_blob", 1, 0, ieee754func_from_blob }, |
|
}; |
unsigned int i; |
int rc = SQLITE_OK; |
SQLITE_EXTENSION_INIT2(pApi); |
(void)pzErrMsg; /* Unused parameter */ |
for(i=0; i<sizeof(aFunc)/sizeof(aFunc[0]) && rc==SQLITE_OK; i++){ |
rc = sqlite3_create_function(db, aFunc[i].zFName, aFunc[i].nArg, |
SQLITE_UTF8|SQLITE_INNOCUOUS, |
(void*)&aFunc[i].iAux, |
aFunc[i].xFunc, 0, 0); |
} |
return rc; |
} |
|
/************************* End ../ext/misc/ieee754.c ********************/ |
/************************* Begin ../ext/misc/series.c ******************/ |
/* |
** 2015-08-18 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
************************************************************************* |
** |
** This file demonstrates how to create a table-valued-function using |
** a virtual table. This demo implements the generate_series() function |
** which gives similar results to the eponymous function in PostgreSQL. |
** Examples: |
** |
** SELECT * FROM generate_series(0,100,5); |
** |
** The query above returns integers from 0 through 100 counting by steps |
** of 5. |
** |
** SELECT * FROM generate_series(0,100); |
** |
** Integers from 0 through 100 with a step size of 1. |
** |
** SELECT * FROM generate_series(20) LIMIT 10; |
** |
** Integers 20 through 29. |
** |
** HOW IT WORKS |
** |
** The generate_series "function" is really a virtual table with the |
** following schema: |
** |
** CREATE TABLE generate_series( |
** value, |
** start HIDDEN, |
** stop HIDDEN, |
** step HIDDEN |
** ); |
** |
** Function arguments in queries against this virtual table are translated |
** into equality constraints against successive hidden columns. In other |
** words, the following pairs of queries are equivalent to each other: |
** |
** SELECT * FROM generate_series(0,100,5); |
** SELECT * FROM generate_series WHERE start=0 AND stop=100 AND step=5; |
** |
** SELECT * FROM generate_series(0,100); |
** SELECT * FROM generate_series WHERE start=0 AND stop=100; |
** |
** SELECT * FROM generate_series(20) LIMIT 10; |
** SELECT * FROM generate_series WHERE start=20 LIMIT 10; |
** |
** The generate_series virtual table implementation leaves the xCreate method |
** set to NULL. This means that it is not possible to do a CREATE VIRTUAL |
** TABLE command with "generate_series" as the USING argument. Instead, there |
** is a single generate_series virtual table that is always available without |
** having to be created first. |
** |
** The xBestIndex method looks for equality constraints against the hidden |
** start, stop, and step columns, and if present, it uses those constraints |
** to bound the sequence of generated values. If the equality constraints |
** are missing, it uses 0 for start, 4294967295 for stop, and 1 for step. |
** xBestIndex returns a small cost when both start and stop are available, |
** and a very large cost if either start or stop are unavailable. This |
** encourages the query planner to order joins such that the bounds of the |
** series are well-defined. |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <assert.h> |
#include <string.h> |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
|
|
/* series_cursor is a subclass of sqlite3_vtab_cursor which will |
** serve as the underlying representation of a cursor that scans |
** over rows of the result |
*/ |
typedef struct series_cursor series_cursor; |
struct series_cursor { |
sqlite3_vtab_cursor base; /* Base class - must be first */ |
int isDesc; /* True to count down rather than up */ |
sqlite3_int64 iRowid; /* The rowid */ |
sqlite3_int64 iValue; /* Current value ("value") */ |
sqlite3_int64 mnValue; /* Mimimum value ("start") */ |
sqlite3_int64 mxValue; /* Maximum value ("stop") */ |
sqlite3_int64 iStep; /* Increment ("step") */ |
}; |
|
/* |
** The seriesConnect() method is invoked to create a new |
** series_vtab that describes the generate_series virtual table. |
** |
** Think of this routine as the constructor for series_vtab objects. |
** |
** All this routine needs to do is: |
** |
** (1) Allocate the series_vtab object and initialize all fields. |
** |
** (2) Tell SQLite (via the sqlite3_declare_vtab() interface) what the |
** result set of queries against generate_series will look like. |
*/ |
static int seriesConnect( |
sqlite3 *db, |
void *pUnused, |
int argcUnused, const char *const*argvUnused, |
sqlite3_vtab **ppVtab, |
char **pzErrUnused |
){ |
sqlite3_vtab *pNew; |
int rc; |
|
/* Column numbers */ |
#define SERIES_COLUMN_VALUE 0 |
#define SERIES_COLUMN_START 1 |
#define SERIES_COLUMN_STOP 2 |
#define SERIES_COLUMN_STEP 3 |
|
(void)pUnused; |
(void)argcUnused; |
(void)argvUnused; |
(void)pzErrUnused; |
rc = sqlite3_declare_vtab(db, |
"CREATE TABLE x(value,start hidden,stop hidden,step hidden)"); |
if( rc==SQLITE_OK ){ |
pNew = *ppVtab = sqlite3_malloc( sizeof(*pNew) ); |
if( pNew==0 ) return SQLITE_NOMEM; |
memset(pNew, 0, sizeof(*pNew)); |
sqlite3_vtab_config(db, SQLITE_VTAB_INNOCUOUS); |
} |
return rc; |
} |
|
/* |
** This method is the destructor for series_cursor objects. |
*/ |
static int seriesDisconnect(sqlite3_vtab *pVtab){ |
sqlite3_free(pVtab); |
return SQLITE_OK; |
} |
|
/* |
** Constructor for a new series_cursor object. |
*/ |
static int seriesOpen(sqlite3_vtab *pUnused, sqlite3_vtab_cursor **ppCursor){ |
series_cursor *pCur; |
(void)pUnused; |
pCur = sqlite3_malloc( sizeof(*pCur) ); |
if( pCur==0 ) return SQLITE_NOMEM; |
memset(pCur, 0, sizeof(*pCur)); |
*ppCursor = &pCur->base; |
return SQLITE_OK; |
} |
|
/* |
** Destructor for a series_cursor. |
*/ |
static int seriesClose(sqlite3_vtab_cursor *cur){ |
sqlite3_free(cur); |
return SQLITE_OK; |
} |
|
|
/* |
** Advance a series_cursor to its next row of output. |
*/ |
static int seriesNext(sqlite3_vtab_cursor *cur){ |
series_cursor *pCur = (series_cursor*)cur; |
if( pCur->isDesc ){ |
pCur->iValue -= pCur->iStep; |
}else{ |
pCur->iValue += pCur->iStep; |
} |
pCur->iRowid++; |
return SQLITE_OK; |
} |
|
/* |
** Return values of columns for the row at which the series_cursor |
** is currently pointing. |
*/ |
static int seriesColumn( |
sqlite3_vtab_cursor *cur, /* The cursor */ |
sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ |
int i /* Which column to return */ |
){ |
series_cursor *pCur = (series_cursor*)cur; |
sqlite3_int64 x = 0; |
switch( i ){ |
case SERIES_COLUMN_START: x = pCur->mnValue; break; |
case SERIES_COLUMN_STOP: x = pCur->mxValue; break; |
case SERIES_COLUMN_STEP: x = pCur->iStep; break; |
default: x = pCur->iValue; break; |
} |
sqlite3_result_int64(ctx, x); |
return SQLITE_OK; |
} |
|
/* |
** Return the rowid for the current row. In this implementation, the |
** first row returned is assigned rowid value 1, and each subsequent |
** row a value 1 more than that of the previous. |
*/ |
static int seriesRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ |
series_cursor *pCur = (series_cursor*)cur; |
*pRowid = pCur->iRowid; |
return SQLITE_OK; |
} |
|
/* |
** Return TRUE if the cursor has been moved off of the last |
** row of output. |
*/ |
static int seriesEof(sqlite3_vtab_cursor *cur){ |
series_cursor *pCur = (series_cursor*)cur; |
if( pCur->isDesc ){ |
return pCur->iValue < pCur->mnValue; |
}else{ |
return pCur->iValue > pCur->mxValue; |
} |
} |
|
/* True to cause run-time checking of the start=, stop=, and/or step= |
** parameters. The only reason to do this is for testing the |
** constraint checking logic for virtual tables in the SQLite core. |
*/ |
#ifndef SQLITE_SERIES_CONSTRAINT_VERIFY |
# define SQLITE_SERIES_CONSTRAINT_VERIFY 0 |
#endif |
|
/* |
** This method is called to "rewind" the series_cursor object back |
** to the first row of output. This method is always called at least |
** once prior to any call to seriesColumn() or seriesRowid() or |
** seriesEof(). |
** |
** The query plan selected by seriesBestIndex is passed in the idxNum |
** parameter. (idxStr is not used in this implementation.) idxNum |
** is a bitmask showing which constraints are available: |
** |
** 1: start=VALUE |
** 2: stop=VALUE |
** 4: step=VALUE |
** |
** Also, if bit 8 is set, that means that the series should be output |
** in descending order rather than in ascending order. If bit 16 is |
** set, then output must appear in ascending order. |
** |
** This routine should initialize the cursor and position it so that it |
** is pointing at the first row, or pointing off the end of the table |
** (so that seriesEof() will return true) if the table is empty. |
*/ |
static int seriesFilter( |
sqlite3_vtab_cursor *pVtabCursor, |
int idxNum, const char *idxStrUnused, |
int argc, sqlite3_value **argv |
){ |
series_cursor *pCur = (series_cursor *)pVtabCursor; |
int i = 0; |
(void)idxStrUnused; |
if( idxNum & 1 ){ |
pCur->mnValue = sqlite3_value_int64(argv[i++]); |
}else{ |
pCur->mnValue = 0; |
} |
if( idxNum & 2 ){ |
pCur->mxValue = sqlite3_value_int64(argv[i++]); |
}else{ |
pCur->mxValue = 0xffffffff; |
} |
if( idxNum & 4 ){ |
pCur->iStep = sqlite3_value_int64(argv[i++]); |
if( pCur->iStep==0 ){ |
pCur->iStep = 1; |
}else if( pCur->iStep<0 ){ |
pCur->iStep = -pCur->iStep; |
if( (idxNum & 16)==0 ) idxNum |= 8; |
} |
}else{ |
pCur->iStep = 1; |
} |
for(i=0; i<argc; i++){ |
if( sqlite3_value_type(argv[i])==SQLITE_NULL ){ |
/* If any of the constraints have a NULL value, then return no rows. |
** See ticket https://www.sqlite.org/src/info/fac496b61722daf2 */ |
pCur->mnValue = 1; |
pCur->mxValue = 0; |
break; |
} |
} |
if( idxNum & 8 ){ |
pCur->isDesc = 1; |
pCur->iValue = pCur->mxValue; |
if( pCur->iStep>0 ){ |
pCur->iValue -= (pCur->mxValue - pCur->mnValue)%pCur->iStep; |
} |
}else{ |
pCur->isDesc = 0; |
pCur->iValue = pCur->mnValue; |
} |
pCur->iRowid = 1; |
return SQLITE_OK; |
} |
|
/* |
** SQLite will invoke this method one or more times while planning a query |
** that uses the generate_series virtual table. This routine needs to create |
** a query plan for each invocation and compute an estimated cost for that |
** plan. |
** |
** In this implementation idxNum is used to represent the |
** query plan. idxStr is unused. |
** |
** The query plan is represented by bits in idxNum: |
** |
** (1) start = $value -- constraint exists |
** (2) stop = $value -- constraint exists |
** (4) step = $value -- constraint exists |
** (8) output in descending order |
*/ |
static int seriesBestIndex( |
sqlite3_vtab *tabUnused, |
sqlite3_index_info *pIdxInfo |
){ |
int i, j; /* Loop over constraints */ |
int idxNum = 0; /* The query plan bitmask */ |
int unusableMask = 0; /* Mask of unusable constraints */ |
int nArg = 0; /* Number of arguments that seriesFilter() expects */ |
int aIdx[3]; /* Constraints on start, stop, and step */ |
const struct sqlite3_index_constraint *pConstraint; |
|
/* This implementation assumes that the start, stop, and step columns |
** are the last three columns in the virtual table. */ |
assert( SERIES_COLUMN_STOP == SERIES_COLUMN_START+1 ); |
assert( SERIES_COLUMN_STEP == SERIES_COLUMN_START+2 ); |
(void)tabUnused; |
aIdx[0] = aIdx[1] = aIdx[2] = -1; |
pConstraint = pIdxInfo->aConstraint; |
for(i=0; i<pIdxInfo->nConstraint; i++, pConstraint++){ |
int iCol; /* 0 for start, 1 for stop, 2 for step */ |
int iMask; /* bitmask for those column */ |
if( pConstraint->iColumn<SERIES_COLUMN_START ) continue; |
iCol = pConstraint->iColumn - SERIES_COLUMN_START; |
assert( iCol>=0 && iCol<=2 ); |
iMask = 1 << iCol; |
if( pConstraint->usable==0 ){ |
unusableMask |= iMask; |
continue; |
}else if( pConstraint->op==SQLITE_INDEX_CONSTRAINT_EQ ){ |
idxNum |= iMask; |
aIdx[iCol] = i; |
} |
} |
for(i=0; i<3; i++){ |
if( (j = aIdx[i])>=0 ){ |
pIdxInfo->aConstraintUsage[j].argvIndex = ++nArg; |
pIdxInfo->aConstraintUsage[j].omit = !SQLITE_SERIES_CONSTRAINT_VERIFY; |
} |
} |
if( (unusableMask & ~idxNum)!=0 ){ |
/* The start, stop, and step columns are inputs. Therefore if there |
** are unusable constraints on any of start, stop, or step then |
** this plan is unusable */ |
return SQLITE_CONSTRAINT; |
} |
if( (idxNum & 3)==3 ){ |
/* Both start= and stop= boundaries are available. This is the |
** the preferred case */ |
pIdxInfo->estimatedCost = (double)(2 - ((idxNum&4)!=0)); |
pIdxInfo->estimatedRows = 1000; |
if( pIdxInfo->nOrderBy==1 ){ |
if( pIdxInfo->aOrderBy[0].desc ){ |
idxNum |= 8; |
}else{ |
idxNum |= 16; |
} |
pIdxInfo->orderByConsumed = 1; |
} |
}else{ |
/* If either boundary is missing, we have to generate a huge span |
** of numbers. Make this case very expensive so that the query |
** planner will work hard to avoid it. */ |
pIdxInfo->estimatedRows = 2147483647; |
} |
pIdxInfo->idxNum = idxNum; |
return SQLITE_OK; |
} |
|
/* |
** This following structure defines all the methods for the |
** generate_series virtual table. |
*/ |
static sqlite3_module seriesModule = { |
0, /* iVersion */ |
0, /* xCreate */ |
seriesConnect, /* xConnect */ |
seriesBestIndex, /* xBestIndex */ |
seriesDisconnect, /* xDisconnect */ |
0, /* xDestroy */ |
seriesOpen, /* xOpen - open a cursor */ |
seriesClose, /* xClose - close a cursor */ |
seriesFilter, /* xFilter - configure scan constraints */ |
seriesNext, /* xNext - advance a cursor */ |
seriesEof, /* xEof - check for end of scan */ |
seriesColumn, /* xColumn - read data */ |
seriesRowid, /* xRowid - read data */ |
0, /* xUpdate */ |
0, /* xBegin */ |
0, /* xSync */ |
0, /* xCommit */ |
0, /* xRollback */ |
0, /* xFindMethod */ |
0, /* xRename */ |
0, /* xSavepoint */ |
0, /* xRelease */ |
0, /* xRollbackTo */ |
0 /* xShadowName */ |
}; |
|
#endif /* SQLITE_OMIT_VIRTUALTABLE */ |
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_series_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
int rc = SQLITE_OK; |
SQLITE_EXTENSION_INIT2(pApi); |
#ifndef SQLITE_OMIT_VIRTUALTABLE |
if( sqlite3_libversion_number()<3008012 ){ |
*pzErrMsg = sqlite3_mprintf( |
"generate_series() requires SQLite 3.8.12 or later"); |
return SQLITE_ERROR; |
} |
rc = sqlite3_create_module(db, "generate_series", &seriesModule, 0); |
#endif |
return rc; |
} |
|
/************************* End ../ext/misc/series.c ********************/ |
#ifdef SQLITE_HAVE_ZLIB |
/************************* Begin ../ext/misc/zipfile.c ******************/ |
/* |
** 2017-12-26 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** This file implements a virtual table for reading and writing ZIP archive |
** files. |
** |
** Usage example: |
** |
** SELECT name, sz, datetime(mtime,'unixepoch') FROM zipfile($filename); |
** |
** Current limitations: |
** |
** * No support for encryption |
** * No support for ZIP archives spanning multiple files |
** * No support for zip64 extensions |
** * Only the "inflate/deflate" (zlib) compression method is supported |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <stdio.h> |
#include <string.h> |
#include <assert.h> |
|
#include <zlib.h> |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
|
#ifndef SQLITE_AMALGAMATION |
|
/* typedef sqlite3_int64 i64; */ |
/* typedef unsigned char u8; */ |
typedef unsigned short u16; |
typedef unsigned long u32; |
#define MIN(a,b) ((a)<(b) ? (a) : (b)) |
|
#if defined(SQLITE_COVERAGE_TEST) || defined(SQLITE_MUTATION_TEST) |
# define ALWAYS(X) (1) |
# define NEVER(X) (0) |
#elif !defined(NDEBUG) |
# define ALWAYS(X) ((X)?1:(assert(0),0)) |
# define NEVER(X) ((X)?(assert(0),1):0) |
#else |
# define ALWAYS(X) (X) |
# define NEVER(X) (X) |
#endif |
|
#endif /* SQLITE_AMALGAMATION */ |
|
/* |
** Definitions for mode bitmasks S_IFDIR, S_IFREG and S_IFLNK. |
** |
** In some ways it would be better to obtain these values from system |
** header files. But, the dependency is undesirable and (a) these |
** have been stable for decades, (b) the values are part of POSIX and |
** are also made explicit in [man stat], and (c) are part of the |
** file format for zip archives. |
*/ |
#ifndef S_IFDIR |
# define S_IFDIR 0040000 |
#endif |
#ifndef S_IFREG |
# define S_IFREG 0100000 |
#endif |
#ifndef S_IFLNK |
# define S_IFLNK 0120000 |
#endif |
|
static const char ZIPFILE_SCHEMA[] = |
"CREATE TABLE y(" |
"name PRIMARY KEY," /* 0: Name of file in zip archive */ |
"mode," /* 1: POSIX mode for file */ |
"mtime," /* 2: Last modification time (secs since 1970)*/ |
"sz," /* 3: Size of object */ |
"rawdata," /* 4: Raw data */ |
"data," /* 5: Uncompressed data */ |
"method," /* 6: Compression method (integer) */ |
"z HIDDEN" /* 7: Name of zip file */ |
") WITHOUT ROWID;"; |
|
#define ZIPFILE_F_COLUMN_IDX 7 /* Index of column "file" in the above */ |
#define ZIPFILE_BUFFER_SIZE (64*1024) |
|
|
/* |
** Magic numbers used to read and write zip files. |
** |
** ZIPFILE_NEWENTRY_MADEBY: |
** Use this value for the "version-made-by" field in new zip file |
** entries. The upper byte indicates "unix", and the lower byte |
** indicates that the zip file matches pkzip specification 3.0. |
** This is what info-zip seems to do. |
** |
** ZIPFILE_NEWENTRY_REQUIRED: |
** Value for "version-required-to-extract" field of new entries. |
** Version 2.0 is required to support folders and deflate compression. |
** |
** ZIPFILE_NEWENTRY_FLAGS: |
** Value for "general-purpose-bit-flags" field of new entries. Bit |
** 11 means "utf-8 filename and comment". |
** |
** ZIPFILE_SIGNATURE_CDS: |
** First 4 bytes of a valid CDS record. |
** |
** ZIPFILE_SIGNATURE_LFH: |
** First 4 bytes of a valid LFH record. |
** |
** ZIPFILE_SIGNATURE_EOCD |
** First 4 bytes of a valid EOCD record. |
*/ |
#define ZIPFILE_EXTRA_TIMESTAMP 0x5455 |
#define ZIPFILE_NEWENTRY_MADEBY ((3<<8) + 30) |
#define ZIPFILE_NEWENTRY_REQUIRED 20 |
#define ZIPFILE_NEWENTRY_FLAGS 0x800 |
#define ZIPFILE_SIGNATURE_CDS 0x02014b50 |
#define ZIPFILE_SIGNATURE_LFH 0x04034b50 |
#define ZIPFILE_SIGNATURE_EOCD 0x06054b50 |
|
/* |
** The sizes of the fixed-size part of each of the three main data |
** structures in a zip archive. |
*/ |
#define ZIPFILE_LFH_FIXED_SZ 30 |
#define ZIPFILE_EOCD_FIXED_SZ 22 |
#define ZIPFILE_CDS_FIXED_SZ 46 |
|
/* |
*** 4.3.16 End of central directory record: |
*** |
*** end of central dir signature 4 bytes (0x06054b50) |
*** number of this disk 2 bytes |
*** number of the disk with the |
*** start of the central directory 2 bytes |
*** total number of entries in the |
*** central directory on this disk 2 bytes |
*** total number of entries in |
*** the central directory 2 bytes |
*** size of the central directory 4 bytes |
*** offset of start of central |
*** directory with respect to |
*** the starting disk number 4 bytes |
*** .ZIP file comment length 2 bytes |
*** .ZIP file comment (variable size) |
*/ |
typedef struct ZipfileEOCD ZipfileEOCD; |
struct ZipfileEOCD { |
u16 iDisk; |
u16 iFirstDisk; |
u16 nEntry; |
u16 nEntryTotal; |
u32 nSize; |
u32 iOffset; |
}; |
|
/* |
*** 4.3.12 Central directory structure: |
*** |
*** ... |
*** |
*** central file header signature 4 bytes (0x02014b50) |
*** version made by 2 bytes |
*** version needed to extract 2 bytes |
*** general purpose bit flag 2 bytes |
*** compression method 2 bytes |
*** last mod file time 2 bytes |
*** last mod file date 2 bytes |
*** crc-32 4 bytes |
*** compressed size 4 bytes |
*** uncompressed size 4 bytes |
*** file name length 2 bytes |
*** extra field length 2 bytes |
*** file comment length 2 bytes |
*** disk number start 2 bytes |
*** internal file attributes 2 bytes |
*** external file attributes 4 bytes |
*** relative offset of local header 4 bytes |
*/ |
typedef struct ZipfileCDS ZipfileCDS; |
struct ZipfileCDS { |
u16 iVersionMadeBy; |
u16 iVersionExtract; |
u16 flags; |
u16 iCompression; |
u16 mTime; |
u16 mDate; |
u32 crc32; |
u32 szCompressed; |
u32 szUncompressed; |
u16 nFile; |
u16 nExtra; |
u16 nComment; |
u16 iDiskStart; |
u16 iInternalAttr; |
u32 iExternalAttr; |
u32 iOffset; |
char *zFile; /* Filename (sqlite3_malloc()) */ |
}; |
|
/* |
*** 4.3.7 Local file header: |
*** |
*** local file header signature 4 bytes (0x04034b50) |
*** version needed to extract 2 bytes |
*** general purpose bit flag 2 bytes |
*** compression method 2 bytes |
*** last mod file time 2 bytes |
*** last mod file date 2 bytes |
*** crc-32 4 bytes |
*** compressed size 4 bytes |
*** uncompressed size 4 bytes |
*** file name length 2 bytes |
*** extra field length 2 bytes |
*** |
*/ |
typedef struct ZipfileLFH ZipfileLFH; |
struct ZipfileLFH { |
u16 iVersionExtract; |
u16 flags; |
u16 iCompression; |
u16 mTime; |
u16 mDate; |
u32 crc32; |
u32 szCompressed; |
u32 szUncompressed; |
u16 nFile; |
u16 nExtra; |
}; |
|
typedef struct ZipfileEntry ZipfileEntry; |
struct ZipfileEntry { |
ZipfileCDS cds; /* Parsed CDS record */ |
u32 mUnixTime; /* Modification time, in UNIX format */ |
u8 *aExtra; /* cds.nExtra+cds.nComment bytes of extra data */ |
i64 iDataOff; /* Offset to data in file (if aData==0) */ |
u8 *aData; /* cds.szCompressed bytes of compressed data */ |
ZipfileEntry *pNext; /* Next element in in-memory CDS */ |
}; |
|
/* |
** Cursor type for zipfile tables. |
*/ |
typedef struct ZipfileCsr ZipfileCsr; |
struct ZipfileCsr { |
sqlite3_vtab_cursor base; /* Base class - must be first */ |
i64 iId; /* Cursor ID */ |
u8 bEof; /* True when at EOF */ |
u8 bNoop; /* If next xNext() call is no-op */ |
|
/* Used outside of write transactions */ |
FILE *pFile; /* Zip file */ |
i64 iNextOff; /* Offset of next record in central directory */ |
ZipfileEOCD eocd; /* Parse of central directory record */ |
|
ZipfileEntry *pFreeEntry; /* Free this list when cursor is closed or reset */ |
ZipfileEntry *pCurrent; /* Current entry */ |
ZipfileCsr *pCsrNext; /* Next cursor on same virtual table */ |
}; |
|
typedef struct ZipfileTab ZipfileTab; |
struct ZipfileTab { |
sqlite3_vtab base; /* Base class - must be first */ |
char *zFile; /* Zip file this table accesses (may be NULL) */ |
sqlite3 *db; /* Host database connection */ |
u8 *aBuffer; /* Temporary buffer used for various tasks */ |
|
ZipfileCsr *pCsrList; /* List of cursors */ |
i64 iNextCsrid; |
|
/* The following are used by write transactions only */ |
ZipfileEntry *pFirstEntry; /* Linked list of all files (if pWriteFd!=0) */ |
ZipfileEntry *pLastEntry; /* Last element in pFirstEntry list */ |
FILE *pWriteFd; /* File handle open on zip archive */ |
i64 szCurrent; /* Current size of zip archive */ |
i64 szOrig; /* Size of archive at start of transaction */ |
}; |
|
/* |
** Set the error message contained in context ctx to the results of |
** vprintf(zFmt, ...). |
*/ |
static void zipfileCtxErrorMsg(sqlite3_context *ctx, const char *zFmt, ...){ |
char *zMsg = 0; |
va_list ap; |
va_start(ap, zFmt); |
zMsg = sqlite3_vmprintf(zFmt, ap); |
sqlite3_result_error(ctx, zMsg, -1); |
sqlite3_free(zMsg); |
va_end(ap); |
} |
|
/* |
** If string zIn is quoted, dequote it in place. Otherwise, if the string |
** is not quoted, do nothing. |
*/ |
static void zipfileDequote(char *zIn){ |
char q = zIn[0]; |
if( q=='"' || q=='\'' || q=='`' || q=='[' ){ |
int iIn = 1; |
int iOut = 0; |
if( q=='[' ) q = ']'; |
while( ALWAYS(zIn[iIn]) ){ |
char c = zIn[iIn++]; |
if( c==q && zIn[iIn++]!=q ) break; |
zIn[iOut++] = c; |
} |
zIn[iOut] = '\0'; |
} |
} |
|
/* |
** Construct a new ZipfileTab virtual table object. |
** |
** argv[0] -> module name ("zipfile") |
** argv[1] -> database name |
** argv[2] -> table name |
** argv[...] -> "column name" and other module argument fields. |
*/ |
static int zipfileConnect( |
sqlite3 *db, |
void *pAux, |
int argc, const char *const*argv, |
sqlite3_vtab **ppVtab, |
char **pzErr |
){ |
int nByte = sizeof(ZipfileTab) + ZIPFILE_BUFFER_SIZE; |
int nFile = 0; |
const char *zFile = 0; |
ZipfileTab *pNew = 0; |
int rc; |
|
/* If the table name is not "zipfile", require that the argument be |
** specified. This stops zipfile tables from being created as: |
** |
** CREATE VIRTUAL TABLE zzz USING zipfile(); |
** |
** It does not prevent: |
** |
** CREATE VIRTUAL TABLE zipfile USING zipfile(); |
*/ |
assert( 0==sqlite3_stricmp(argv[0], "zipfile") ); |
if( (0!=sqlite3_stricmp(argv[2], "zipfile") && argc<4) || argc>4 ){ |
*pzErr = sqlite3_mprintf("zipfile constructor requires one argument"); |
return SQLITE_ERROR; |
} |
|
if( argc>3 ){ |
zFile = argv[3]; |
nFile = (int)strlen(zFile)+1; |
} |
|
rc = sqlite3_declare_vtab(db, ZIPFILE_SCHEMA); |
if( rc==SQLITE_OK ){ |
pNew = (ZipfileTab*)sqlite3_malloc64((sqlite3_int64)nByte+nFile); |
if( pNew==0 ) return SQLITE_NOMEM; |
memset(pNew, 0, nByte+nFile); |
pNew->db = db; |
pNew->aBuffer = (u8*)&pNew[1]; |
if( zFile ){ |
pNew->zFile = (char*)&pNew->aBuffer[ZIPFILE_BUFFER_SIZE]; |
memcpy(pNew->zFile, zFile, nFile); |
zipfileDequote(pNew->zFile); |
} |
} |
sqlite3_vtab_config(db, SQLITE_VTAB_DIRECTONLY); |
*ppVtab = (sqlite3_vtab*)pNew; |
return rc; |
} |
|
/* |
** Free the ZipfileEntry structure indicated by the only argument. |
*/ |
static void zipfileEntryFree(ZipfileEntry *p){ |
if( p ){ |
sqlite3_free(p->cds.zFile); |
sqlite3_free(p); |
} |
} |
|
/* |
** Release resources that should be freed at the end of a write |
** transaction. |
*/ |
static void zipfileCleanupTransaction(ZipfileTab *pTab){ |
ZipfileEntry *pEntry; |
ZipfileEntry *pNext; |
|
if( pTab->pWriteFd ){ |
fclose(pTab->pWriteFd); |
pTab->pWriteFd = 0; |
} |
for(pEntry=pTab->pFirstEntry; pEntry; pEntry=pNext){ |
pNext = pEntry->pNext; |
zipfileEntryFree(pEntry); |
} |
pTab->pFirstEntry = 0; |
pTab->pLastEntry = 0; |
pTab->szCurrent = 0; |
pTab->szOrig = 0; |
} |
|
/* |
** This method is the destructor for zipfile vtab objects. |
*/ |
static int zipfileDisconnect(sqlite3_vtab *pVtab){ |
zipfileCleanupTransaction((ZipfileTab*)pVtab); |
sqlite3_free(pVtab); |
return SQLITE_OK; |
} |
|
/* |
** Constructor for a new ZipfileCsr object. |
*/ |
static int zipfileOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCsr){ |
ZipfileTab *pTab = (ZipfileTab*)p; |
ZipfileCsr *pCsr; |
pCsr = sqlite3_malloc(sizeof(*pCsr)); |
*ppCsr = (sqlite3_vtab_cursor*)pCsr; |
if( pCsr==0 ){ |
return SQLITE_NOMEM; |
} |
memset(pCsr, 0, sizeof(*pCsr)); |
pCsr->iId = ++pTab->iNextCsrid; |
pCsr->pCsrNext = pTab->pCsrList; |
pTab->pCsrList = pCsr; |
return SQLITE_OK; |
} |
|
/* |
** Reset a cursor back to the state it was in when first returned |
** by zipfileOpen(). |
*/ |
static void zipfileResetCursor(ZipfileCsr *pCsr){ |
ZipfileEntry *p; |
ZipfileEntry *pNext; |
|
pCsr->bEof = 0; |
if( pCsr->pFile ){ |
fclose(pCsr->pFile); |
pCsr->pFile = 0; |
zipfileEntryFree(pCsr->pCurrent); |
pCsr->pCurrent = 0; |
} |
|
for(p=pCsr->pFreeEntry; p; p=pNext){ |
pNext = p->pNext; |
zipfileEntryFree(p); |
} |
} |
|
/* |
** Destructor for an ZipfileCsr. |
*/ |
static int zipfileClose(sqlite3_vtab_cursor *cur){ |
ZipfileCsr *pCsr = (ZipfileCsr*)cur; |
ZipfileTab *pTab = (ZipfileTab*)(pCsr->base.pVtab); |
ZipfileCsr **pp; |
zipfileResetCursor(pCsr); |
|
/* Remove this cursor from the ZipfileTab.pCsrList list. */ |
for(pp=&pTab->pCsrList; *pp!=pCsr; pp=&((*pp)->pCsrNext)); |
*pp = pCsr->pCsrNext; |
|
sqlite3_free(pCsr); |
return SQLITE_OK; |
} |
|
/* |
** Set the error message for the virtual table associated with cursor |
** pCsr to the results of vprintf(zFmt, ...). |
*/ |
static void zipfileTableErr(ZipfileTab *pTab, const char *zFmt, ...){ |
va_list ap; |
va_start(ap, zFmt); |
sqlite3_free(pTab->base.zErrMsg); |
pTab->base.zErrMsg = sqlite3_vmprintf(zFmt, ap); |
va_end(ap); |
} |
static void zipfileCursorErr(ZipfileCsr *pCsr, const char *zFmt, ...){ |
va_list ap; |
va_start(ap, zFmt); |
sqlite3_free(pCsr->base.pVtab->zErrMsg); |
pCsr->base.pVtab->zErrMsg = sqlite3_vmprintf(zFmt, ap); |
va_end(ap); |
} |
|
/* |
** Read nRead bytes of data from offset iOff of file pFile into buffer |
** aRead[]. Return SQLITE_OK if successful, or an SQLite error code |
** otherwise. |
** |
** If an error does occur, output variable (*pzErrmsg) may be set to point |
** to an English language error message. It is the responsibility of the |
** caller to eventually free this buffer using |
** sqlite3_free(). |
*/ |
static int zipfileReadData( |
FILE *pFile, /* Read from this file */ |
u8 *aRead, /* Read into this buffer */ |
int nRead, /* Number of bytes to read */ |
i64 iOff, /* Offset to read from */ |
char **pzErrmsg /* OUT: Error message (from sqlite3_malloc) */ |
){ |
size_t n; |
fseek(pFile, (long)iOff, SEEK_SET); |
n = fread(aRead, 1, nRead, pFile); |
if( (int)n!=nRead ){ |
*pzErrmsg = sqlite3_mprintf("error in fread()"); |
return SQLITE_ERROR; |
} |
return SQLITE_OK; |
} |
|
static int zipfileAppendData( |
ZipfileTab *pTab, |
const u8 *aWrite, |
int nWrite |
){ |
if( nWrite>0 ){ |
size_t n = nWrite; |
fseek(pTab->pWriteFd, (long)pTab->szCurrent, SEEK_SET); |
n = fwrite(aWrite, 1, nWrite, pTab->pWriteFd); |
if( (int)n!=nWrite ){ |
pTab->base.zErrMsg = sqlite3_mprintf("error in fwrite()"); |
return SQLITE_ERROR; |
} |
pTab->szCurrent += nWrite; |
} |
return SQLITE_OK; |
} |
|
/* |
** Read and return a 16-bit little-endian unsigned integer from buffer aBuf. |
*/ |
static u16 zipfileGetU16(const u8 *aBuf){ |
return (aBuf[1] << 8) + aBuf[0]; |
} |
|
/* |
** Read and return a 32-bit little-endian unsigned integer from buffer aBuf. |
*/ |
static u32 zipfileGetU32(const u8 *aBuf){ |
return ((u32)(aBuf[3]) << 24) |
+ ((u32)(aBuf[2]) << 16) |
+ ((u32)(aBuf[1]) << 8) |
+ ((u32)(aBuf[0]) << 0); |
} |
|
/* |
** Write a 16-bit little endiate integer into buffer aBuf. |
*/ |
static void zipfilePutU16(u8 *aBuf, u16 val){ |
aBuf[0] = val & 0xFF; |
aBuf[1] = (val>>8) & 0xFF; |
} |
|
/* |
** Write a 32-bit little endiate integer into buffer aBuf. |
*/ |
static void zipfilePutU32(u8 *aBuf, u32 val){ |
aBuf[0] = val & 0xFF; |
aBuf[1] = (val>>8) & 0xFF; |
aBuf[2] = (val>>16) & 0xFF; |
aBuf[3] = (val>>24) & 0xFF; |
} |
|
#define zipfileRead32(aBuf) ( aBuf+=4, zipfileGetU32(aBuf-4) ) |
#define zipfileRead16(aBuf) ( aBuf+=2, zipfileGetU16(aBuf-2) ) |
|
#define zipfileWrite32(aBuf,val) { zipfilePutU32(aBuf,val); aBuf+=4; } |
#define zipfileWrite16(aBuf,val) { zipfilePutU16(aBuf,val); aBuf+=2; } |
|
/* |
** Magic numbers used to read CDS records. |
*/ |
#define ZIPFILE_CDS_NFILE_OFF 28 |
#define ZIPFILE_CDS_SZCOMPRESSED_OFF 20 |
|
/* |
** Decode the CDS record in buffer aBuf into (*pCDS). Return SQLITE_ERROR |
** if the record is not well-formed, or SQLITE_OK otherwise. |
*/ |
static int zipfileReadCDS(u8 *aBuf, ZipfileCDS *pCDS){ |
u8 *aRead = aBuf; |
u32 sig = zipfileRead32(aRead); |
int rc = SQLITE_OK; |
if( sig!=ZIPFILE_SIGNATURE_CDS ){ |
rc = SQLITE_ERROR; |
}else{ |
pCDS->iVersionMadeBy = zipfileRead16(aRead); |
pCDS->iVersionExtract = zipfileRead16(aRead); |
pCDS->flags = zipfileRead16(aRead); |
pCDS->iCompression = zipfileRead16(aRead); |
pCDS->mTime = zipfileRead16(aRead); |
pCDS->mDate = zipfileRead16(aRead); |
pCDS->crc32 = zipfileRead32(aRead); |
pCDS->szCompressed = zipfileRead32(aRead); |
pCDS->szUncompressed = zipfileRead32(aRead); |
assert( aRead==&aBuf[ZIPFILE_CDS_NFILE_OFF] ); |
pCDS->nFile = zipfileRead16(aRead); |
pCDS->nExtra = zipfileRead16(aRead); |
pCDS->nComment = zipfileRead16(aRead); |
pCDS->iDiskStart = zipfileRead16(aRead); |
pCDS->iInternalAttr = zipfileRead16(aRead); |
pCDS->iExternalAttr = zipfileRead32(aRead); |
pCDS->iOffset = zipfileRead32(aRead); |
assert( aRead==&aBuf[ZIPFILE_CDS_FIXED_SZ] ); |
} |
|
return rc; |
} |
|
/* |
** Decode the LFH record in buffer aBuf into (*pLFH). Return SQLITE_ERROR |
** if the record is not well-formed, or SQLITE_OK otherwise. |
*/ |
static int zipfileReadLFH( |
u8 *aBuffer, |
ZipfileLFH *pLFH |
){ |
u8 *aRead = aBuffer; |
int rc = SQLITE_OK; |
|
u32 sig = zipfileRead32(aRead); |
if( sig!=ZIPFILE_SIGNATURE_LFH ){ |
rc = SQLITE_ERROR; |
}else{ |
pLFH->iVersionExtract = zipfileRead16(aRead); |
pLFH->flags = zipfileRead16(aRead); |
pLFH->iCompression = zipfileRead16(aRead); |
pLFH->mTime = zipfileRead16(aRead); |
pLFH->mDate = zipfileRead16(aRead); |
pLFH->crc32 = zipfileRead32(aRead); |
pLFH->szCompressed = zipfileRead32(aRead); |
pLFH->szUncompressed = zipfileRead32(aRead); |
pLFH->nFile = zipfileRead16(aRead); |
pLFH->nExtra = zipfileRead16(aRead); |
} |
return rc; |
} |
|
|
/* |
** Buffer aExtra (size nExtra bytes) contains zip archive "extra" fields. |
** Scan through this buffer to find an "extra-timestamp" field. If one |
** exists, extract the 32-bit modification-timestamp from it and store |
** the value in output parameter *pmTime. |
** |
** Zero is returned if no extra-timestamp record could be found (and so |
** *pmTime is left unchanged), or non-zero otherwise. |
** |
** The general format of an extra field is: |
** |
** Header ID 2 bytes |
** Data Size 2 bytes |
** Data N bytes |
*/ |
static int zipfileScanExtra(u8 *aExtra, int nExtra, u32 *pmTime){ |
int ret = 0; |
u8 *p = aExtra; |
u8 *pEnd = &aExtra[nExtra]; |
|
while( p<pEnd ){ |
u16 id = zipfileRead16(p); |
u16 nByte = zipfileRead16(p); |
|
switch( id ){ |
case ZIPFILE_EXTRA_TIMESTAMP: { |
u8 b = p[0]; |
if( b & 0x01 ){ /* 0x01 -> modtime is present */ |
*pmTime = zipfileGetU32(&p[1]); |
ret = 1; |
} |
break; |
} |
} |
|
p += nByte; |
} |
return ret; |
} |
|
/* |
** Convert the standard MS-DOS timestamp stored in the mTime and mDate |
** fields of the CDS structure passed as the only argument to a 32-bit |
** UNIX seconds-since-the-epoch timestamp. Return the result. |
** |
** "Standard" MS-DOS time format: |
** |
** File modification time: |
** Bits 00-04: seconds divided by 2 |
** Bits 05-10: minute |
** Bits 11-15: hour |
** File modification date: |
** Bits 00-04: day |
** Bits 05-08: month (1-12) |
** Bits 09-15: years from 1980 |
** |
** https://msdn.microsoft.com/en-us/library/9kkf9tah.aspx |
*/ |
static u32 zipfileMtime(ZipfileCDS *pCDS){ |
int Y = (1980 + ((pCDS->mDate >> 9) & 0x7F)); |
int M = ((pCDS->mDate >> 5) & 0x0F); |
int D = (pCDS->mDate & 0x1F); |
int B = -13; |
|
int sec = (pCDS->mTime & 0x1F)*2; |
int min = (pCDS->mTime >> 5) & 0x3F; |
int hr = (pCDS->mTime >> 11) & 0x1F; |
i64 JD; |
|
/* JD = INT(365.25 * (Y+4716)) + INT(30.6001 * (M+1)) + D + B - 1524.5 */ |
|
/* Calculate the JD in seconds for noon on the day in question */ |
if( M<3 ){ |
Y = Y-1; |
M = M+12; |
} |
JD = (i64)(24*60*60) * ( |
(int)(365.25 * (Y + 4716)) |
+ (int)(30.6001 * (M + 1)) |
+ D + B - 1524 |
); |
|
/* Correct the JD for the time within the day */ |
JD += (hr-12) * 3600 + min * 60 + sec; |
|
/* Convert JD to unix timestamp (the JD epoch is 2440587.5) */ |
return (u32)(JD - (i64)(24405875) * 24*60*6); |
} |
|
/* |
** The opposite of zipfileMtime(). This function populates the mTime and |
** mDate fields of the CDS structure passed as the first argument according |
** to the UNIX timestamp value passed as the second. |
*/ |
static void zipfileMtimeToDos(ZipfileCDS *pCds, u32 mUnixTime){ |
/* Convert unix timestamp to JD (2440588 is noon on 1/1/1970) */ |
i64 JD = (i64)2440588 + mUnixTime / (24*60*60); |
|
int A, B, C, D, E; |
int yr, mon, day; |
int hr, min, sec; |
|
A = (int)((JD - 1867216.25)/36524.25); |
A = (int)(JD + 1 + A - (A/4)); |
B = A + 1524; |
C = (int)((B - 122.1)/365.25); |
D = (36525*(C&32767))/100; |
E = (int)((B-D)/30.6001); |
|
day = B - D - (int)(30.6001*E); |
mon = (E<14 ? E-1 : E-13); |
yr = mon>2 ? C-4716 : C-4715; |
|
hr = (mUnixTime % (24*60*60)) / (60*60); |
min = (mUnixTime % (60*60)) / 60; |
sec = (mUnixTime % 60); |
|
if( yr>=1980 ){ |
pCds->mDate = (u16)(day + (mon << 5) + ((yr-1980) << 9)); |
pCds->mTime = (u16)(sec/2 + (min<<5) + (hr<<11)); |
}else{ |
pCds->mDate = pCds->mTime = 0; |
} |
|
assert( mUnixTime<315507600 |
|| mUnixTime==zipfileMtime(pCds) |
|| ((mUnixTime % 2) && mUnixTime-1==zipfileMtime(pCds)) |
/* || (mUnixTime % 2) */ |
); |
} |
|
/* |
** If aBlob is not NULL, then it is a pointer to a buffer (nBlob bytes in |
** size) containing an entire zip archive image. Or, if aBlob is NULL, |
** then pFile is a file-handle open on a zip file. In either case, this |
** function creates a ZipfileEntry object based on the zip archive entry |
** for which the CDS record is at offset iOff. |
** |
** If successful, SQLITE_OK is returned and (*ppEntry) set to point to |
** the new object. Otherwise, an SQLite error code is returned and the |
** final value of (*ppEntry) undefined. |
*/ |
static int zipfileGetEntry( |
ZipfileTab *pTab, /* Store any error message here */ |
const u8 *aBlob, /* Pointer to in-memory file image */ |
int nBlob, /* Size of aBlob[] in bytes */ |
FILE *pFile, /* If aBlob==0, read from this file */ |
i64 iOff, /* Offset of CDS record */ |
ZipfileEntry **ppEntry /* OUT: Pointer to new object */ |
){ |
u8 *aRead; |
char **pzErr = &pTab->base.zErrMsg; |
int rc = SQLITE_OK; |
|
if( aBlob==0 ){ |
aRead = pTab->aBuffer; |
rc = zipfileReadData(pFile, aRead, ZIPFILE_CDS_FIXED_SZ, iOff, pzErr); |
}else{ |
aRead = (u8*)&aBlob[iOff]; |
} |
|
if( rc==SQLITE_OK ){ |
sqlite3_int64 nAlloc; |
ZipfileEntry *pNew; |
|
int nFile = zipfileGetU16(&aRead[ZIPFILE_CDS_NFILE_OFF]); |
int nExtra = zipfileGetU16(&aRead[ZIPFILE_CDS_NFILE_OFF+2]); |
nExtra += zipfileGetU16(&aRead[ZIPFILE_CDS_NFILE_OFF+4]); |
|
nAlloc = sizeof(ZipfileEntry) + nExtra; |
if( aBlob ){ |
nAlloc += zipfileGetU32(&aRead[ZIPFILE_CDS_SZCOMPRESSED_OFF]); |
} |
|
pNew = (ZipfileEntry*)sqlite3_malloc64(nAlloc); |
if( pNew==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
memset(pNew, 0, sizeof(ZipfileEntry)); |
rc = zipfileReadCDS(aRead, &pNew->cds); |
if( rc!=SQLITE_OK ){ |
*pzErr = sqlite3_mprintf("failed to read CDS at offset %lld", iOff); |
}else if( aBlob==0 ){ |
rc = zipfileReadData( |
pFile, aRead, nExtra+nFile, iOff+ZIPFILE_CDS_FIXED_SZ, pzErr |
); |
}else{ |
aRead = (u8*)&aBlob[iOff + ZIPFILE_CDS_FIXED_SZ]; |
} |
} |
|
if( rc==SQLITE_OK ){ |
u32 *pt = &pNew->mUnixTime; |
pNew->cds.zFile = sqlite3_mprintf("%.*s", nFile, aRead); |
pNew->aExtra = (u8*)&pNew[1]; |
memcpy(pNew->aExtra, &aRead[nFile], nExtra); |
if( pNew->cds.zFile==0 ){ |
rc = SQLITE_NOMEM; |
}else if( 0==zipfileScanExtra(&aRead[nFile], pNew->cds.nExtra, pt) ){ |
pNew->mUnixTime = zipfileMtime(&pNew->cds); |
} |
} |
|
if( rc==SQLITE_OK ){ |
static const int szFix = ZIPFILE_LFH_FIXED_SZ; |
ZipfileLFH lfh; |
if( pFile ){ |
rc = zipfileReadData(pFile, aRead, szFix, pNew->cds.iOffset, pzErr); |
}else{ |
aRead = (u8*)&aBlob[pNew->cds.iOffset]; |
} |
|
rc = zipfileReadLFH(aRead, &lfh); |
if( rc==SQLITE_OK ){ |
pNew->iDataOff = pNew->cds.iOffset + ZIPFILE_LFH_FIXED_SZ; |
pNew->iDataOff += lfh.nFile + lfh.nExtra; |
if( aBlob && pNew->cds.szCompressed ){ |
pNew->aData = &pNew->aExtra[nExtra]; |
memcpy(pNew->aData, &aBlob[pNew->iDataOff], pNew->cds.szCompressed); |
} |
}else{ |
*pzErr = sqlite3_mprintf("failed to read LFH at offset %d", |
(int)pNew->cds.iOffset |
); |
} |
} |
|
if( rc!=SQLITE_OK ){ |
zipfileEntryFree(pNew); |
}else{ |
*ppEntry = pNew; |
} |
} |
|
return rc; |
} |
|
/* |
** Advance an ZipfileCsr to its next row of output. |
*/ |
static int zipfileNext(sqlite3_vtab_cursor *cur){ |
ZipfileCsr *pCsr = (ZipfileCsr*)cur; |
int rc = SQLITE_OK; |
|
if( pCsr->pFile ){ |
i64 iEof = pCsr->eocd.iOffset + pCsr->eocd.nSize; |
zipfileEntryFree(pCsr->pCurrent); |
pCsr->pCurrent = 0; |
if( pCsr->iNextOff>=iEof ){ |
pCsr->bEof = 1; |
}else{ |
ZipfileEntry *p = 0; |
ZipfileTab *pTab = (ZipfileTab*)(cur->pVtab); |
rc = zipfileGetEntry(pTab, 0, 0, pCsr->pFile, pCsr->iNextOff, &p); |
if( rc==SQLITE_OK ){ |
pCsr->iNextOff += ZIPFILE_CDS_FIXED_SZ; |
pCsr->iNextOff += (int)p->cds.nExtra + p->cds.nFile + p->cds.nComment; |
} |
pCsr->pCurrent = p; |
} |
}else{ |
if( !pCsr->bNoop ){ |
pCsr->pCurrent = pCsr->pCurrent->pNext; |
} |
if( pCsr->pCurrent==0 ){ |
pCsr->bEof = 1; |
} |
} |
|
pCsr->bNoop = 0; |
return rc; |
} |
|
static void zipfileFree(void *p) { |
sqlite3_free(p); |
} |
|
/* |
** Buffer aIn (size nIn bytes) contains compressed data. Uncompressed, the |
** size is nOut bytes. This function uncompresses the data and sets the |
** return value in context pCtx to the result (a blob). |
** |
** If an error occurs, an error code is left in pCtx instead. |
*/ |
static void zipfileInflate( |
sqlite3_context *pCtx, /* Store result here */ |
const u8 *aIn, /* Compressed data */ |
int nIn, /* Size of buffer aIn[] in bytes */ |
int nOut /* Expected output size */ |
){ |
u8 *aRes = sqlite3_malloc(nOut); |
if( aRes==0 ){ |
sqlite3_result_error_nomem(pCtx); |
}else{ |
int err; |
z_stream str; |
memset(&str, 0, sizeof(str)); |
|
str.next_in = (Byte*)aIn; |
str.avail_in = nIn; |
str.next_out = (Byte*)aRes; |
str.avail_out = nOut; |
|
err = inflateInit2(&str, -15); |
if( err!=Z_OK ){ |
zipfileCtxErrorMsg(pCtx, "inflateInit2() failed (%d)", err); |
}else{ |
err = inflate(&str, Z_NO_FLUSH); |
if( err!=Z_STREAM_END ){ |
zipfileCtxErrorMsg(pCtx, "inflate() failed (%d)", err); |
}else{ |
sqlite3_result_blob(pCtx, aRes, nOut, zipfileFree); |
aRes = 0; |
} |
} |
sqlite3_free(aRes); |
inflateEnd(&str); |
} |
} |
|
/* |
** Buffer aIn (size nIn bytes) contains uncompressed data. This function |
** compresses it and sets (*ppOut) to point to a buffer containing the |
** compressed data. The caller is responsible for eventually calling |
** sqlite3_free() to release buffer (*ppOut). Before returning, (*pnOut) |
** is set to the size of buffer (*ppOut) in bytes. |
** |
** If no error occurs, SQLITE_OK is returned. Otherwise, an SQLite error |
** code is returned and an error message left in virtual-table handle |
** pTab. The values of (*ppOut) and (*pnOut) are left unchanged in this |
** case. |
*/ |
static int zipfileDeflate( |
const u8 *aIn, int nIn, /* Input */ |
u8 **ppOut, int *pnOut, /* Output */ |
char **pzErr /* OUT: Error message */ |
){ |
int rc = SQLITE_OK; |
sqlite3_int64 nAlloc; |
z_stream str; |
u8 *aOut; |
|
memset(&str, 0, sizeof(str)); |
str.next_in = (Bytef*)aIn; |
str.avail_in = nIn; |
deflateInit2(&str, 9, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY); |
|
nAlloc = deflateBound(&str, nIn); |
aOut = (u8*)sqlite3_malloc64(nAlloc); |
if( aOut==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
int res; |
str.next_out = aOut; |
str.avail_out = nAlloc; |
res = deflate(&str, Z_FINISH); |
if( res==Z_STREAM_END ){ |
*ppOut = aOut; |
*pnOut = (int)str.total_out; |
}else{ |
sqlite3_free(aOut); |
*pzErr = sqlite3_mprintf("zipfile: deflate() error"); |
rc = SQLITE_ERROR; |
} |
deflateEnd(&str); |
} |
|
return rc; |
} |
|
|
/* |
** Return values of columns for the row at which the series_cursor |
** is currently pointing. |
*/ |
static int zipfileColumn( |
sqlite3_vtab_cursor *cur, /* The cursor */ |
sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ |
int i /* Which column to return */ |
){ |
ZipfileCsr *pCsr = (ZipfileCsr*)cur; |
ZipfileCDS *pCDS = &pCsr->pCurrent->cds; |
int rc = SQLITE_OK; |
switch( i ){ |
case 0: /* name */ |
sqlite3_result_text(ctx, pCDS->zFile, -1, SQLITE_TRANSIENT); |
break; |
case 1: /* mode */ |
/* TODO: Whether or not the following is correct surely depends on |
** the platform on which the archive was created. */ |
sqlite3_result_int(ctx, pCDS->iExternalAttr >> 16); |
break; |
case 2: { /* mtime */ |
sqlite3_result_int64(ctx, pCsr->pCurrent->mUnixTime); |
break; |
} |
case 3: { /* sz */ |
if( sqlite3_vtab_nochange(ctx)==0 ){ |
sqlite3_result_int64(ctx, pCDS->szUncompressed); |
} |
break; |
} |
case 4: /* rawdata */ |
if( sqlite3_vtab_nochange(ctx) ) break; |
case 5: { /* data */ |
if( i==4 || pCDS->iCompression==0 || pCDS->iCompression==8 ){ |
int sz = pCDS->szCompressed; |
int szFinal = pCDS->szUncompressed; |
if( szFinal>0 ){ |
u8 *aBuf; |
u8 *aFree = 0; |
if( pCsr->pCurrent->aData ){ |
aBuf = pCsr->pCurrent->aData; |
}else{ |
aBuf = aFree = sqlite3_malloc64(sz); |
if( aBuf==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
FILE *pFile = pCsr->pFile; |
if( pFile==0 ){ |
pFile = ((ZipfileTab*)(pCsr->base.pVtab))->pWriteFd; |
} |
rc = zipfileReadData(pFile, aBuf, sz, pCsr->pCurrent->iDataOff, |
&pCsr->base.pVtab->zErrMsg |
); |
} |
} |
if( rc==SQLITE_OK ){ |
if( i==5 && pCDS->iCompression ){ |
zipfileInflate(ctx, aBuf, sz, szFinal); |
}else{ |
sqlite3_result_blob(ctx, aBuf, sz, SQLITE_TRANSIENT); |
} |
} |
sqlite3_free(aFree); |
}else{ |
/* Figure out if this is a directory or a zero-sized file. Consider |
** it to be a directory either if the mode suggests so, or if |
** the final character in the name is '/'. */ |
u32 mode = pCDS->iExternalAttr >> 16; |
if( !(mode & S_IFDIR) && pCDS->zFile[pCDS->nFile-1]!='/' ){ |
sqlite3_result_blob(ctx, "", 0, SQLITE_STATIC); |
} |
} |
} |
break; |
} |
case 6: /* method */ |
sqlite3_result_int(ctx, pCDS->iCompression); |
break; |
default: /* z */ |
assert( i==7 ); |
sqlite3_result_int64(ctx, pCsr->iId); |
break; |
} |
|
return rc; |
} |
|
/* |
** Return TRUE if the cursor is at EOF. |
*/ |
static int zipfileEof(sqlite3_vtab_cursor *cur){ |
ZipfileCsr *pCsr = (ZipfileCsr*)cur; |
return pCsr->bEof; |
} |
|
/* |
** If aBlob is not NULL, then it points to a buffer nBlob bytes in size |
** containing an entire zip archive image. Or, if aBlob is NULL, then pFile |
** is guaranteed to be a file-handle open on a zip file. |
** |
** This function attempts to locate the EOCD record within the zip archive |
** and populate *pEOCD with the results of decoding it. SQLITE_OK is |
** returned if successful. Otherwise, an SQLite error code is returned and |
** an English language error message may be left in virtual-table pTab. |
*/ |
static int zipfileReadEOCD( |
ZipfileTab *pTab, /* Return errors here */ |
const u8 *aBlob, /* Pointer to in-memory file image */ |
int nBlob, /* Size of aBlob[] in bytes */ |
FILE *pFile, /* Read from this file if aBlob==0 */ |
ZipfileEOCD *pEOCD /* Object to populate */ |
){ |
u8 *aRead = pTab->aBuffer; /* Temporary buffer */ |
int nRead; /* Bytes to read from file */ |
int rc = SQLITE_OK; |
|
if( aBlob==0 ){ |
i64 iOff; /* Offset to read from */ |
i64 szFile; /* Total size of file in bytes */ |
fseek(pFile, 0, SEEK_END); |
szFile = (i64)ftell(pFile); |
if( szFile==0 ){ |
memset(pEOCD, 0, sizeof(ZipfileEOCD)); |
return SQLITE_OK; |
} |
nRead = (int)(MIN(szFile, ZIPFILE_BUFFER_SIZE)); |
iOff = szFile - nRead; |
rc = zipfileReadData(pFile, aRead, nRead, iOff, &pTab->base.zErrMsg); |
}else{ |
nRead = (int)(MIN(nBlob, ZIPFILE_BUFFER_SIZE)); |
aRead = (u8*)&aBlob[nBlob-nRead]; |
} |
|
if( rc==SQLITE_OK ){ |
int i; |
|
/* Scan backwards looking for the signature bytes */ |
for(i=nRead-20; i>=0; i--){ |
if( aRead[i]==0x50 && aRead[i+1]==0x4b |
&& aRead[i+2]==0x05 && aRead[i+3]==0x06 |
){ |
break; |
} |
} |
if( i<0 ){ |
pTab->base.zErrMsg = sqlite3_mprintf( |
"cannot find end of central directory record" |
); |
return SQLITE_ERROR; |
} |
|
aRead += i+4; |
pEOCD->iDisk = zipfileRead16(aRead); |
pEOCD->iFirstDisk = zipfileRead16(aRead); |
pEOCD->nEntry = zipfileRead16(aRead); |
pEOCD->nEntryTotal = zipfileRead16(aRead); |
pEOCD->nSize = zipfileRead32(aRead); |
pEOCD->iOffset = zipfileRead32(aRead); |
} |
|
return rc; |
} |
|
/* |
** Add object pNew to the linked list that begins at ZipfileTab.pFirstEntry |
** and ends with pLastEntry. If argument pBefore is NULL, then pNew is added |
** to the end of the list. Otherwise, it is added to the list immediately |
** before pBefore (which is guaranteed to be a part of said list). |
*/ |
static void zipfileAddEntry( |
ZipfileTab *pTab, |
ZipfileEntry *pBefore, |
ZipfileEntry *pNew |
){ |
assert( (pTab->pFirstEntry==0)==(pTab->pLastEntry==0) ); |
assert( pNew->pNext==0 ); |
if( pBefore==0 ){ |
if( pTab->pFirstEntry==0 ){ |
pTab->pFirstEntry = pTab->pLastEntry = pNew; |
}else{ |
assert( pTab->pLastEntry->pNext==0 ); |
pTab->pLastEntry->pNext = pNew; |
pTab->pLastEntry = pNew; |
} |
}else{ |
ZipfileEntry **pp; |
for(pp=&pTab->pFirstEntry; *pp!=pBefore; pp=&((*pp)->pNext)); |
pNew->pNext = pBefore; |
*pp = pNew; |
} |
} |
|
static int zipfileLoadDirectory(ZipfileTab *pTab, const u8 *aBlob, int nBlob){ |
ZipfileEOCD eocd; |
int rc; |
int i; |
i64 iOff; |
|
rc = zipfileReadEOCD(pTab, aBlob, nBlob, pTab->pWriteFd, &eocd); |
iOff = eocd.iOffset; |
for(i=0; rc==SQLITE_OK && i<eocd.nEntry; i++){ |
ZipfileEntry *pNew = 0; |
rc = zipfileGetEntry(pTab, aBlob, nBlob, pTab->pWriteFd, iOff, &pNew); |
|
if( rc==SQLITE_OK ){ |
zipfileAddEntry(pTab, 0, pNew); |
iOff += ZIPFILE_CDS_FIXED_SZ; |
iOff += (int)pNew->cds.nExtra + pNew->cds.nFile + pNew->cds.nComment; |
} |
} |
return rc; |
} |
|
/* |
** xFilter callback. |
*/ |
static int zipfileFilter( |
sqlite3_vtab_cursor *cur, |
int idxNum, const char *idxStr, |
int argc, sqlite3_value **argv |
){ |
ZipfileTab *pTab = (ZipfileTab*)cur->pVtab; |
ZipfileCsr *pCsr = (ZipfileCsr*)cur; |
const char *zFile = 0; /* Zip file to scan */ |
int rc = SQLITE_OK; /* Return Code */ |
int bInMemory = 0; /* True for an in-memory zipfile */ |
|
zipfileResetCursor(pCsr); |
|
if( pTab->zFile ){ |
zFile = pTab->zFile; |
}else if( idxNum==0 ){ |
zipfileCursorErr(pCsr, "zipfile() function requires an argument"); |
return SQLITE_ERROR; |
}else if( sqlite3_value_type(argv[0])==SQLITE_BLOB ){ |
const u8 *aBlob = (const u8*)sqlite3_value_blob(argv[0]); |
int nBlob = sqlite3_value_bytes(argv[0]); |
assert( pTab->pFirstEntry==0 ); |
rc = zipfileLoadDirectory(pTab, aBlob, nBlob); |
pCsr->pFreeEntry = pTab->pFirstEntry; |
pTab->pFirstEntry = pTab->pLastEntry = 0; |
if( rc!=SQLITE_OK ) return rc; |
bInMemory = 1; |
}else{ |
zFile = (const char*)sqlite3_value_text(argv[0]); |
} |
|
if( 0==pTab->pWriteFd && 0==bInMemory ){ |
pCsr->pFile = fopen(zFile, "rb"); |
if( pCsr->pFile==0 ){ |
zipfileCursorErr(pCsr, "cannot open file: %s", zFile); |
rc = SQLITE_ERROR; |
}else{ |
rc = zipfileReadEOCD(pTab, 0, 0, pCsr->pFile, &pCsr->eocd); |
if( rc==SQLITE_OK ){ |
if( pCsr->eocd.nEntry==0 ){ |
pCsr->bEof = 1; |
}else{ |
pCsr->iNextOff = pCsr->eocd.iOffset; |
rc = zipfileNext(cur); |
} |
} |
} |
}else{ |
pCsr->bNoop = 1; |
pCsr->pCurrent = pCsr->pFreeEntry ? pCsr->pFreeEntry : pTab->pFirstEntry; |
rc = zipfileNext(cur); |
} |
|
return rc; |
} |
|
/* |
** xBestIndex callback. |
*/ |
static int zipfileBestIndex( |
sqlite3_vtab *tab, |
sqlite3_index_info *pIdxInfo |
){ |
int i; |
int idx = -1; |
int unusable = 0; |
|
for(i=0; i<pIdxInfo->nConstraint; i++){ |
const struct sqlite3_index_constraint *pCons = &pIdxInfo->aConstraint[i]; |
if( pCons->iColumn!=ZIPFILE_F_COLUMN_IDX ) continue; |
if( pCons->usable==0 ){ |
unusable = 1; |
}else if( pCons->op==SQLITE_INDEX_CONSTRAINT_EQ ){ |
idx = i; |
} |
} |
pIdxInfo->estimatedCost = 1000.0; |
if( idx>=0 ){ |
pIdxInfo->aConstraintUsage[idx].argvIndex = 1; |
pIdxInfo->aConstraintUsage[idx].omit = 1; |
pIdxInfo->idxNum = 1; |
}else if( unusable ){ |
return SQLITE_CONSTRAINT; |
} |
return SQLITE_OK; |
} |
|
static ZipfileEntry *zipfileNewEntry(const char *zPath){ |
ZipfileEntry *pNew; |
pNew = sqlite3_malloc(sizeof(ZipfileEntry)); |
if( pNew ){ |
memset(pNew, 0, sizeof(ZipfileEntry)); |
pNew->cds.zFile = sqlite3_mprintf("%s", zPath); |
if( pNew->cds.zFile==0 ){ |
sqlite3_free(pNew); |
pNew = 0; |
} |
} |
return pNew; |
} |
|
static int zipfileSerializeLFH(ZipfileEntry *pEntry, u8 *aBuf){ |
ZipfileCDS *pCds = &pEntry->cds; |
u8 *a = aBuf; |
|
pCds->nExtra = 9; |
|
/* Write the LFH itself */ |
zipfileWrite32(a, ZIPFILE_SIGNATURE_LFH); |
zipfileWrite16(a, pCds->iVersionExtract); |
zipfileWrite16(a, pCds->flags); |
zipfileWrite16(a, pCds->iCompression); |
zipfileWrite16(a, pCds->mTime); |
zipfileWrite16(a, pCds->mDate); |
zipfileWrite32(a, pCds->crc32); |
zipfileWrite32(a, pCds->szCompressed); |
zipfileWrite32(a, pCds->szUncompressed); |
zipfileWrite16(a, (u16)pCds->nFile); |
zipfileWrite16(a, pCds->nExtra); |
assert( a==&aBuf[ZIPFILE_LFH_FIXED_SZ] ); |
|
/* Add the file name */ |
memcpy(a, pCds->zFile, (int)pCds->nFile); |
a += (int)pCds->nFile; |
|
/* The "extra" data */ |
zipfileWrite16(a, ZIPFILE_EXTRA_TIMESTAMP); |
zipfileWrite16(a, 5); |
*a++ = 0x01; |
zipfileWrite32(a, pEntry->mUnixTime); |
|
return a-aBuf; |
} |
|
static int zipfileAppendEntry( |
ZipfileTab *pTab, |
ZipfileEntry *pEntry, |
const u8 *pData, |
int nData |
){ |
u8 *aBuf = pTab->aBuffer; |
int nBuf; |
int rc; |
|
nBuf = zipfileSerializeLFH(pEntry, aBuf); |
rc = zipfileAppendData(pTab, aBuf, nBuf); |
if( rc==SQLITE_OK ){ |
pEntry->iDataOff = pTab->szCurrent; |
rc = zipfileAppendData(pTab, pData, nData); |
} |
|
return rc; |
} |
|
static int zipfileGetMode( |
sqlite3_value *pVal, |
int bIsDir, /* If true, default to directory */ |
u32 *pMode, /* OUT: Mode value */ |
char **pzErr /* OUT: Error message */ |
){ |
const char *z = (const char*)sqlite3_value_text(pVal); |
u32 mode = 0; |
if( z==0 ){ |
mode = (bIsDir ? (S_IFDIR + 0755) : (S_IFREG + 0644)); |
}else if( z[0]>='0' && z[0]<='9' ){ |
mode = (unsigned int)sqlite3_value_int(pVal); |
}else{ |
const char zTemplate[11] = "-rwxrwxrwx"; |
int i; |
if( strlen(z)!=10 ) goto parse_error; |
switch( z[0] ){ |
case '-': mode |= S_IFREG; break; |
case 'd': mode |= S_IFDIR; break; |
case 'l': mode |= S_IFLNK; break; |
default: goto parse_error; |
} |
for(i=1; i<10; i++){ |
if( z[i]==zTemplate[i] ) mode |= 1 << (9-i); |
else if( z[i]!='-' ) goto parse_error; |
} |
} |
if( ((mode & S_IFDIR)==0)==bIsDir ){ |
/* The "mode" attribute is a directory, but data has been specified. |
** Or vice-versa - no data but "mode" is a file or symlink. */ |
*pzErr = sqlite3_mprintf("zipfile: mode does not match data"); |
return SQLITE_CONSTRAINT; |
} |
*pMode = mode; |
return SQLITE_OK; |
|
parse_error: |
*pzErr = sqlite3_mprintf("zipfile: parse error in mode: %s", z); |
return SQLITE_ERROR; |
} |
|
/* |
** Both (const char*) arguments point to nul-terminated strings. Argument |
** nB is the value of strlen(zB). This function returns 0 if the strings are |
** identical, ignoring any trailing '/' character in either path. */ |
static int zipfileComparePath(const char *zA, const char *zB, int nB){ |
int nA = (int)strlen(zA); |
if( nA>0 && zA[nA-1]=='/' ) nA--; |
if( nB>0 && zB[nB-1]=='/' ) nB--; |
if( nA==nB && memcmp(zA, zB, nA)==0 ) return 0; |
return 1; |
} |
|
static int zipfileBegin(sqlite3_vtab *pVtab){ |
ZipfileTab *pTab = (ZipfileTab*)pVtab; |
int rc = SQLITE_OK; |
|
assert( pTab->pWriteFd==0 ); |
if( pTab->zFile==0 || pTab->zFile[0]==0 ){ |
pTab->base.zErrMsg = sqlite3_mprintf("zipfile: missing filename"); |
return SQLITE_ERROR; |
} |
|
/* Open a write fd on the file. Also load the entire central directory |
** structure into memory. During the transaction any new file data is |
** appended to the archive file, but the central directory is accumulated |
** in main-memory until the transaction is committed. */ |
pTab->pWriteFd = fopen(pTab->zFile, "ab+"); |
if( pTab->pWriteFd==0 ){ |
pTab->base.zErrMsg = sqlite3_mprintf( |
"zipfile: failed to open file %s for writing", pTab->zFile |
); |
rc = SQLITE_ERROR; |
}else{ |
fseek(pTab->pWriteFd, 0, SEEK_END); |
pTab->szCurrent = pTab->szOrig = (i64)ftell(pTab->pWriteFd); |
rc = zipfileLoadDirectory(pTab, 0, 0); |
} |
|
if( rc!=SQLITE_OK ){ |
zipfileCleanupTransaction(pTab); |
} |
|
return rc; |
} |
|
/* |
** Return the current time as a 32-bit timestamp in UNIX epoch format (like |
** time(2)). |
*/ |
static u32 zipfileTime(void){ |
sqlite3_vfs *pVfs = sqlite3_vfs_find(0); |
u32 ret; |
if( pVfs->iVersion>=2 && pVfs->xCurrentTimeInt64 ){ |
i64 ms; |
pVfs->xCurrentTimeInt64(pVfs, &ms); |
ret = (u32)((ms/1000) - ((i64)24405875 * 8640)); |
}else{ |
double day; |
pVfs->xCurrentTime(pVfs, &day); |
ret = (u32)((day - 2440587.5) * 86400); |
} |
return ret; |
} |
|
/* |
** Return a 32-bit timestamp in UNIX epoch format. |
** |
** If the value passed as the only argument is either NULL or an SQL NULL, |
** return the current time. Otherwise, return the value stored in (*pVal) |
** cast to a 32-bit unsigned integer. |
*/ |
static u32 zipfileGetTime(sqlite3_value *pVal){ |
if( pVal==0 || sqlite3_value_type(pVal)==SQLITE_NULL ){ |
return zipfileTime(); |
} |
return (u32)sqlite3_value_int64(pVal); |
} |
|
/* |
** Unless it is NULL, entry pOld is currently part of the pTab->pFirstEntry |
** linked list. Remove it from the list and free the object. |
*/ |
static void zipfileRemoveEntryFromList(ZipfileTab *pTab, ZipfileEntry *pOld){ |
if( pOld ){ |
ZipfileEntry **pp; |
for(pp=&pTab->pFirstEntry; (*pp)!=pOld; pp=&((*pp)->pNext)); |
*pp = (*pp)->pNext; |
zipfileEntryFree(pOld); |
} |
} |
|
/* |
** xUpdate method. |
*/ |
static int zipfileUpdate( |
sqlite3_vtab *pVtab, |
int nVal, |
sqlite3_value **apVal, |
sqlite_int64 *pRowid |
){ |
ZipfileTab *pTab = (ZipfileTab*)pVtab; |
int rc = SQLITE_OK; /* Return Code */ |
ZipfileEntry *pNew = 0; /* New in-memory CDS entry */ |
|
u32 mode = 0; /* Mode for new entry */ |
u32 mTime = 0; /* Modification time for new entry */ |
i64 sz = 0; /* Uncompressed size */ |
const char *zPath = 0; /* Path for new entry */ |
int nPath = 0; /* strlen(zPath) */ |
const u8 *pData = 0; /* Pointer to buffer containing content */ |
int nData = 0; /* Size of pData buffer in bytes */ |
int iMethod = 0; /* Compression method for new entry */ |
u8 *pFree = 0; /* Free this */ |
char *zFree = 0; /* Also free this */ |
ZipfileEntry *pOld = 0; |
ZipfileEntry *pOld2 = 0; |
int bUpdate = 0; /* True for an update that modifies "name" */ |
int bIsDir = 0; |
u32 iCrc32 = 0; |
|
if( pTab->pWriteFd==0 ){ |
rc = zipfileBegin(pVtab); |
if( rc!=SQLITE_OK ) return rc; |
} |
|
/* If this is a DELETE or UPDATE, find the archive entry to delete. */ |
if( sqlite3_value_type(apVal[0])!=SQLITE_NULL ){ |
const char *zDelete = (const char*)sqlite3_value_text(apVal[0]); |
int nDelete = (int)strlen(zDelete); |
if( nVal>1 ){ |
const char *zUpdate = (const char*)sqlite3_value_text(apVal[1]); |
if( zUpdate && zipfileComparePath(zUpdate, zDelete, nDelete)!=0 ){ |
bUpdate = 1; |
} |
} |
for(pOld=pTab->pFirstEntry; 1; pOld=pOld->pNext){ |
if( zipfileComparePath(pOld->cds.zFile, zDelete, nDelete)==0 ){ |
break; |
} |
assert( pOld->pNext ); |
} |
} |
|
if( nVal>1 ){ |
/* Check that "sz" and "rawdata" are both NULL: */ |
if( sqlite3_value_type(apVal[5])!=SQLITE_NULL ){ |
zipfileTableErr(pTab, "sz must be NULL"); |
rc = SQLITE_CONSTRAINT; |
} |
if( sqlite3_value_type(apVal[6])!=SQLITE_NULL ){ |
zipfileTableErr(pTab, "rawdata must be NULL"); |
rc = SQLITE_CONSTRAINT; |
} |
|
if( rc==SQLITE_OK ){ |
if( sqlite3_value_type(apVal[7])==SQLITE_NULL ){ |
/* data=NULL. A directory */ |
bIsDir = 1; |
}else{ |
/* Value specified for "data", and possibly "method". This must be |
** a regular file or a symlink. */ |
const u8 *aIn = sqlite3_value_blob(apVal[7]); |
int nIn = sqlite3_value_bytes(apVal[7]); |
int bAuto = sqlite3_value_type(apVal[8])==SQLITE_NULL; |
|
iMethod = sqlite3_value_int(apVal[8]); |
sz = nIn; |
pData = aIn; |
nData = nIn; |
if( iMethod!=0 && iMethod!=8 ){ |
zipfileTableErr(pTab, "unknown compression method: %d", iMethod); |
rc = SQLITE_CONSTRAINT; |
}else{ |
if( bAuto || iMethod ){ |
int nCmp; |
rc = zipfileDeflate(aIn, nIn, &pFree, &nCmp, &pTab->base.zErrMsg); |
if( rc==SQLITE_OK ){ |
if( iMethod || nCmp<nIn ){ |
iMethod = 8; |
pData = pFree; |
nData = nCmp; |
} |
} |
} |
iCrc32 = crc32(0, aIn, nIn); |
} |
} |
} |
|
if( rc==SQLITE_OK ){ |
rc = zipfileGetMode(apVal[3], bIsDir, &mode, &pTab->base.zErrMsg); |
} |
|
if( rc==SQLITE_OK ){ |
zPath = (const char*)sqlite3_value_text(apVal[2]); |
if( zPath==0 ) zPath = ""; |
nPath = (int)strlen(zPath); |
mTime = zipfileGetTime(apVal[4]); |
} |
|
if( rc==SQLITE_OK && bIsDir ){ |
/* For a directory, check that the last character in the path is a |
** '/'. This appears to be required for compatibility with info-zip |
** (the unzip command on unix). It does not create directories |
** otherwise. */ |
if( nPath<=0 || zPath[nPath-1]!='/' ){ |
zFree = sqlite3_mprintf("%s/", zPath); |
zPath = (const char*)zFree; |
if( zFree==0 ){ |
rc = SQLITE_NOMEM; |
nPath = 0; |
}else{ |
nPath = (int)strlen(zPath); |
} |
} |
} |
|
/* Check that we're not inserting a duplicate entry -OR- updating an |
** entry with a path, thereby making it into a duplicate. */ |
if( (pOld==0 || bUpdate) && rc==SQLITE_OK ){ |
ZipfileEntry *p; |
for(p=pTab->pFirstEntry; p; p=p->pNext){ |
if( zipfileComparePath(p->cds.zFile, zPath, nPath)==0 ){ |
switch( sqlite3_vtab_on_conflict(pTab->db) ){ |
case SQLITE_IGNORE: { |
goto zipfile_update_done; |
} |
case SQLITE_REPLACE: { |
pOld2 = p; |
break; |
} |
default: { |
zipfileTableErr(pTab, "duplicate name: \"%s\"", zPath); |
rc = SQLITE_CONSTRAINT; |
break; |
} |
} |
break; |
} |
} |
} |
|
if( rc==SQLITE_OK ){ |
/* Create the new CDS record. */ |
pNew = zipfileNewEntry(zPath); |
if( pNew==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
pNew->cds.iVersionMadeBy = ZIPFILE_NEWENTRY_MADEBY; |
pNew->cds.iVersionExtract = ZIPFILE_NEWENTRY_REQUIRED; |
pNew->cds.flags = ZIPFILE_NEWENTRY_FLAGS; |
pNew->cds.iCompression = (u16)iMethod; |
zipfileMtimeToDos(&pNew->cds, mTime); |
pNew->cds.crc32 = iCrc32; |
pNew->cds.szCompressed = nData; |
pNew->cds.szUncompressed = (u32)sz; |
pNew->cds.iExternalAttr = (mode<<16); |
pNew->cds.iOffset = (u32)pTab->szCurrent; |
pNew->cds.nFile = (u16)nPath; |
pNew->mUnixTime = (u32)mTime; |
rc = zipfileAppendEntry(pTab, pNew, pData, nData); |
zipfileAddEntry(pTab, pOld, pNew); |
} |
} |
} |
|
if( rc==SQLITE_OK && (pOld || pOld2) ){ |
ZipfileCsr *pCsr; |
for(pCsr=pTab->pCsrList; pCsr; pCsr=pCsr->pCsrNext){ |
if( pCsr->pCurrent && (pCsr->pCurrent==pOld || pCsr->pCurrent==pOld2) ){ |
pCsr->pCurrent = pCsr->pCurrent->pNext; |
pCsr->bNoop = 1; |
} |
} |
|
zipfileRemoveEntryFromList(pTab, pOld); |
zipfileRemoveEntryFromList(pTab, pOld2); |
} |
|
zipfile_update_done: |
sqlite3_free(pFree); |
sqlite3_free(zFree); |
return rc; |
} |
|
static int zipfileSerializeEOCD(ZipfileEOCD *p, u8 *aBuf){ |
u8 *a = aBuf; |
zipfileWrite32(a, ZIPFILE_SIGNATURE_EOCD); |
zipfileWrite16(a, p->iDisk); |
zipfileWrite16(a, p->iFirstDisk); |
zipfileWrite16(a, p->nEntry); |
zipfileWrite16(a, p->nEntryTotal); |
zipfileWrite32(a, p->nSize); |
zipfileWrite32(a, p->iOffset); |
zipfileWrite16(a, 0); /* Size of trailing comment in bytes*/ |
|
return a-aBuf; |
} |
|
static int zipfileAppendEOCD(ZipfileTab *pTab, ZipfileEOCD *p){ |
int nBuf = zipfileSerializeEOCD(p, pTab->aBuffer); |
assert( nBuf==ZIPFILE_EOCD_FIXED_SZ ); |
return zipfileAppendData(pTab, pTab->aBuffer, nBuf); |
} |
|
/* |
** Serialize the CDS structure into buffer aBuf[]. Return the number |
** of bytes written. |
*/ |
static int zipfileSerializeCDS(ZipfileEntry *pEntry, u8 *aBuf){ |
u8 *a = aBuf; |
ZipfileCDS *pCDS = &pEntry->cds; |
|
if( pEntry->aExtra==0 ){ |
pCDS->nExtra = 9; |
} |
|
zipfileWrite32(a, ZIPFILE_SIGNATURE_CDS); |
zipfileWrite16(a, pCDS->iVersionMadeBy); |
zipfileWrite16(a, pCDS->iVersionExtract); |
zipfileWrite16(a, pCDS->flags); |
zipfileWrite16(a, pCDS->iCompression); |
zipfileWrite16(a, pCDS->mTime); |
zipfileWrite16(a, pCDS->mDate); |
zipfileWrite32(a, pCDS->crc32); |
zipfileWrite32(a, pCDS->szCompressed); |
zipfileWrite32(a, pCDS->szUncompressed); |
assert( a==&aBuf[ZIPFILE_CDS_NFILE_OFF] ); |
zipfileWrite16(a, pCDS->nFile); |
zipfileWrite16(a, pCDS->nExtra); |
zipfileWrite16(a, pCDS->nComment); |
zipfileWrite16(a, pCDS->iDiskStart); |
zipfileWrite16(a, pCDS->iInternalAttr); |
zipfileWrite32(a, pCDS->iExternalAttr); |
zipfileWrite32(a, pCDS->iOffset); |
|
memcpy(a, pCDS->zFile, pCDS->nFile); |
a += pCDS->nFile; |
|
if( pEntry->aExtra ){ |
int n = (int)pCDS->nExtra + (int)pCDS->nComment; |
memcpy(a, pEntry->aExtra, n); |
a += n; |
}else{ |
assert( pCDS->nExtra==9 ); |
zipfileWrite16(a, ZIPFILE_EXTRA_TIMESTAMP); |
zipfileWrite16(a, 5); |
*a++ = 0x01; |
zipfileWrite32(a, pEntry->mUnixTime); |
} |
|
return a-aBuf; |
} |
|
static int zipfileCommit(sqlite3_vtab *pVtab){ |
ZipfileTab *pTab = (ZipfileTab*)pVtab; |
int rc = SQLITE_OK; |
if( pTab->pWriteFd ){ |
i64 iOffset = pTab->szCurrent; |
ZipfileEntry *p; |
ZipfileEOCD eocd; |
int nEntry = 0; |
|
/* Write out all entries */ |
for(p=pTab->pFirstEntry; rc==SQLITE_OK && p; p=p->pNext){ |
int n = zipfileSerializeCDS(p, pTab->aBuffer); |
rc = zipfileAppendData(pTab, pTab->aBuffer, n); |
nEntry++; |
} |
|
/* Write out the EOCD record */ |
eocd.iDisk = 0; |
eocd.iFirstDisk = 0; |
eocd.nEntry = (u16)nEntry; |
eocd.nEntryTotal = (u16)nEntry; |
eocd.nSize = (u32)(pTab->szCurrent - iOffset); |
eocd.iOffset = (u32)iOffset; |
rc = zipfileAppendEOCD(pTab, &eocd); |
|
zipfileCleanupTransaction(pTab); |
} |
return rc; |
} |
|
static int zipfileRollback(sqlite3_vtab *pVtab){ |
return zipfileCommit(pVtab); |
} |
|
static ZipfileCsr *zipfileFindCursor(ZipfileTab *pTab, i64 iId){ |
ZipfileCsr *pCsr; |
for(pCsr=pTab->pCsrList; pCsr; pCsr=pCsr->pCsrNext){ |
if( iId==pCsr->iId ) break; |
} |
return pCsr; |
} |
|
static void zipfileFunctionCds( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
ZipfileCsr *pCsr; |
ZipfileTab *pTab = (ZipfileTab*)sqlite3_user_data(context); |
assert( argc>0 ); |
|
pCsr = zipfileFindCursor(pTab, sqlite3_value_int64(argv[0])); |
if( pCsr ){ |
ZipfileCDS *p = &pCsr->pCurrent->cds; |
char *zRes = sqlite3_mprintf("{" |
"\"version-made-by\" : %u, " |
"\"version-to-extract\" : %u, " |
"\"flags\" : %u, " |
"\"compression\" : %u, " |
"\"time\" : %u, " |
"\"date\" : %u, " |
"\"crc32\" : %u, " |
"\"compressed-size\" : %u, " |
"\"uncompressed-size\" : %u, " |
"\"file-name-length\" : %u, " |
"\"extra-field-length\" : %u, " |
"\"file-comment-length\" : %u, " |
"\"disk-number-start\" : %u, " |
"\"internal-attr\" : %u, " |
"\"external-attr\" : %u, " |
"\"offset\" : %u }", |
(u32)p->iVersionMadeBy, (u32)p->iVersionExtract, |
(u32)p->flags, (u32)p->iCompression, |
(u32)p->mTime, (u32)p->mDate, |
(u32)p->crc32, (u32)p->szCompressed, |
(u32)p->szUncompressed, (u32)p->nFile, |
(u32)p->nExtra, (u32)p->nComment, |
(u32)p->iDiskStart, (u32)p->iInternalAttr, |
(u32)p->iExternalAttr, (u32)p->iOffset |
); |
|
if( zRes==0 ){ |
sqlite3_result_error_nomem(context); |
}else{ |
sqlite3_result_text(context, zRes, -1, SQLITE_TRANSIENT); |
sqlite3_free(zRes); |
} |
} |
} |
|
/* |
** xFindFunction method. |
*/ |
static int zipfileFindFunction( |
sqlite3_vtab *pVtab, /* Virtual table handle */ |
int nArg, /* Number of SQL function arguments */ |
const char *zName, /* Name of SQL function */ |
void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), /* OUT: Result */ |
void **ppArg /* OUT: User data for *pxFunc */ |
){ |
if( sqlite3_stricmp("zipfile_cds", zName)==0 ){ |
*pxFunc = zipfileFunctionCds; |
*ppArg = (void*)pVtab; |
return 1; |
} |
return 0; |
} |
|
typedef struct ZipfileBuffer ZipfileBuffer; |
struct ZipfileBuffer { |
u8 *a; /* Pointer to buffer */ |
int n; /* Size of buffer in bytes */ |
int nAlloc; /* Byte allocated at a[] */ |
}; |
|
typedef struct ZipfileCtx ZipfileCtx; |
struct ZipfileCtx { |
int nEntry; |
ZipfileBuffer body; |
ZipfileBuffer cds; |
}; |
|
static int zipfileBufferGrow(ZipfileBuffer *pBuf, int nByte){ |
if( pBuf->n+nByte>pBuf->nAlloc ){ |
u8 *aNew; |
sqlite3_int64 nNew = pBuf->n ? pBuf->n*2 : 512; |
int nReq = pBuf->n + nByte; |
|
while( nNew<nReq ) nNew = nNew*2; |
aNew = sqlite3_realloc64(pBuf->a, nNew); |
if( aNew==0 ) return SQLITE_NOMEM; |
pBuf->a = aNew; |
pBuf->nAlloc = (int)nNew; |
} |
return SQLITE_OK; |
} |
|
/* |
** xStep() callback for the zipfile() aggregate. This can be called in |
** any of the following ways: |
** |
** SELECT zipfile(name,data) ... |
** SELECT zipfile(name,mode,mtime,data) ... |
** SELECT zipfile(name,mode,mtime,data,method) ... |
*/ |
void zipfileStep(sqlite3_context *pCtx, int nVal, sqlite3_value **apVal){ |
ZipfileCtx *p; /* Aggregate function context */ |
ZipfileEntry e; /* New entry to add to zip archive */ |
|
sqlite3_value *pName = 0; |
sqlite3_value *pMode = 0; |
sqlite3_value *pMtime = 0; |
sqlite3_value *pData = 0; |
sqlite3_value *pMethod = 0; |
|
int bIsDir = 0; |
u32 mode; |
int rc = SQLITE_OK; |
char *zErr = 0; |
|
int iMethod = -1; /* Compression method to use (0 or 8) */ |
|
const u8 *aData = 0; /* Possibly compressed data for new entry */ |
int nData = 0; /* Size of aData[] in bytes */ |
int szUncompressed = 0; /* Size of data before compression */ |
u8 *aFree = 0; /* Free this before returning */ |
u32 iCrc32 = 0; /* crc32 of uncompressed data */ |
|
char *zName = 0; /* Path (name) of new entry */ |
int nName = 0; /* Size of zName in bytes */ |
char *zFree = 0; /* Free this before returning */ |
int nByte; |
|
memset(&e, 0, sizeof(e)); |
p = (ZipfileCtx*)sqlite3_aggregate_context(pCtx, sizeof(ZipfileCtx)); |
if( p==0 ) return; |
|
/* Martial the arguments into stack variables */ |
if( nVal!=2 && nVal!=4 && nVal!=5 ){ |
zErr = sqlite3_mprintf("wrong number of arguments to function zipfile()"); |
rc = SQLITE_ERROR; |
goto zipfile_step_out; |
} |
pName = apVal[0]; |
if( nVal==2 ){ |
pData = apVal[1]; |
}else{ |
pMode = apVal[1]; |
pMtime = apVal[2]; |
pData = apVal[3]; |
if( nVal==5 ){ |
pMethod = apVal[4]; |
} |
} |
|
/* Check that the 'name' parameter looks ok. */ |
zName = (char*)sqlite3_value_text(pName); |
nName = sqlite3_value_bytes(pName); |
if( zName==0 ){ |
zErr = sqlite3_mprintf("first argument to zipfile() must be non-NULL"); |
rc = SQLITE_ERROR; |
goto zipfile_step_out; |
} |
|
/* Inspect the 'method' parameter. This must be either 0 (store), 8 (use |
** deflate compression) or NULL (choose automatically). */ |
if( pMethod && SQLITE_NULL!=sqlite3_value_type(pMethod) ){ |
iMethod = (int)sqlite3_value_int64(pMethod); |
if( iMethod!=0 && iMethod!=8 ){ |
zErr = sqlite3_mprintf("illegal method value: %d", iMethod); |
rc = SQLITE_ERROR; |
goto zipfile_step_out; |
} |
} |
|
/* Now inspect the data. If this is NULL, then the new entry must be a |
** directory. Otherwise, figure out whether or not the data should |
** be deflated or simply stored in the zip archive. */ |
if( sqlite3_value_type(pData)==SQLITE_NULL ){ |
bIsDir = 1; |
iMethod = 0; |
}else{ |
aData = sqlite3_value_blob(pData); |
szUncompressed = nData = sqlite3_value_bytes(pData); |
iCrc32 = crc32(0, aData, nData); |
if( iMethod<0 || iMethod==8 ){ |
int nOut = 0; |
rc = zipfileDeflate(aData, nData, &aFree, &nOut, &zErr); |
if( rc!=SQLITE_OK ){ |
goto zipfile_step_out; |
} |
if( iMethod==8 || nOut<nData ){ |
aData = aFree; |
nData = nOut; |
iMethod = 8; |
}else{ |
iMethod = 0; |
} |
} |
} |
|
/* Decode the "mode" argument. */ |
rc = zipfileGetMode(pMode, bIsDir, &mode, &zErr); |
if( rc ) goto zipfile_step_out; |
|
/* Decode the "mtime" argument. */ |
e.mUnixTime = zipfileGetTime(pMtime); |
|
/* If this is a directory entry, ensure that there is exactly one '/' |
** at the end of the path. Or, if this is not a directory and the path |
** ends in '/' it is an error. */ |
if( bIsDir==0 ){ |
if( nName>0 && zName[nName-1]=='/' ){ |
zErr = sqlite3_mprintf("non-directory name must not end with /"); |
rc = SQLITE_ERROR; |
goto zipfile_step_out; |
} |
}else{ |
if( nName==0 || zName[nName-1]!='/' ){ |
zName = zFree = sqlite3_mprintf("%s/", zName); |
if( zName==0 ){ |
rc = SQLITE_NOMEM; |
goto zipfile_step_out; |
} |
nName = (int)strlen(zName); |
}else{ |
while( nName>1 && zName[nName-2]=='/' ) nName--; |
} |
} |
|
/* Assemble the ZipfileEntry object for the new zip archive entry */ |
e.cds.iVersionMadeBy = ZIPFILE_NEWENTRY_MADEBY; |
e.cds.iVersionExtract = ZIPFILE_NEWENTRY_REQUIRED; |
e.cds.flags = ZIPFILE_NEWENTRY_FLAGS; |
e.cds.iCompression = (u16)iMethod; |
zipfileMtimeToDos(&e.cds, (u32)e.mUnixTime); |
e.cds.crc32 = iCrc32; |
e.cds.szCompressed = nData; |
e.cds.szUncompressed = szUncompressed; |
e.cds.iExternalAttr = (mode<<16); |
e.cds.iOffset = p->body.n; |
e.cds.nFile = (u16)nName; |
e.cds.zFile = zName; |
|
/* Append the LFH to the body of the new archive */ |
nByte = ZIPFILE_LFH_FIXED_SZ + e.cds.nFile + 9; |
if( (rc = zipfileBufferGrow(&p->body, nByte)) ) goto zipfile_step_out; |
p->body.n += zipfileSerializeLFH(&e, &p->body.a[p->body.n]); |
|
/* Append the data to the body of the new archive */ |
if( nData>0 ){ |
if( (rc = zipfileBufferGrow(&p->body, nData)) ) goto zipfile_step_out; |
memcpy(&p->body.a[p->body.n], aData, nData); |
p->body.n += nData; |
} |
|
/* Append the CDS record to the directory of the new archive */ |
nByte = ZIPFILE_CDS_FIXED_SZ + e.cds.nFile + 9; |
if( (rc = zipfileBufferGrow(&p->cds, nByte)) ) goto zipfile_step_out; |
p->cds.n += zipfileSerializeCDS(&e, &p->cds.a[p->cds.n]); |
|
/* Increment the count of entries in the archive */ |
p->nEntry++; |
|
zipfile_step_out: |
sqlite3_free(aFree); |
sqlite3_free(zFree); |
if( rc ){ |
if( zErr ){ |
sqlite3_result_error(pCtx, zErr, -1); |
}else{ |
sqlite3_result_error_code(pCtx, rc); |
} |
} |
sqlite3_free(zErr); |
} |
|
/* |
** xFinalize() callback for zipfile aggregate function. |
*/ |
void zipfileFinal(sqlite3_context *pCtx){ |
ZipfileCtx *p; |
ZipfileEOCD eocd; |
sqlite3_int64 nZip; |
u8 *aZip; |
|
p = (ZipfileCtx*)sqlite3_aggregate_context(pCtx, sizeof(ZipfileCtx)); |
if( p==0 ) return; |
if( p->nEntry>0 ){ |
memset(&eocd, 0, sizeof(eocd)); |
eocd.nEntry = (u16)p->nEntry; |
eocd.nEntryTotal = (u16)p->nEntry; |
eocd.nSize = p->cds.n; |
eocd.iOffset = p->body.n; |
|
nZip = p->body.n + p->cds.n + ZIPFILE_EOCD_FIXED_SZ; |
aZip = (u8*)sqlite3_malloc64(nZip); |
if( aZip==0 ){ |
sqlite3_result_error_nomem(pCtx); |
}else{ |
memcpy(aZip, p->body.a, p->body.n); |
memcpy(&aZip[p->body.n], p->cds.a, p->cds.n); |
zipfileSerializeEOCD(&eocd, &aZip[p->body.n + p->cds.n]); |
sqlite3_result_blob(pCtx, aZip, (int)nZip, zipfileFree); |
} |
} |
|
sqlite3_free(p->body.a); |
sqlite3_free(p->cds.a); |
} |
|
|
/* |
** Register the "zipfile" virtual table. |
*/ |
static int zipfileRegister(sqlite3 *db){ |
static sqlite3_module zipfileModule = { |
1, /* iVersion */ |
zipfileConnect, /* xCreate */ |
zipfileConnect, /* xConnect */ |
zipfileBestIndex, /* xBestIndex */ |
zipfileDisconnect, /* xDisconnect */ |
zipfileDisconnect, /* xDestroy */ |
zipfileOpen, /* xOpen - open a cursor */ |
zipfileClose, /* xClose - close a cursor */ |
zipfileFilter, /* xFilter - configure scan constraints */ |
zipfileNext, /* xNext - advance a cursor */ |
zipfileEof, /* xEof - check for end of scan */ |
zipfileColumn, /* xColumn - read data */ |
0, /* xRowid - read data */ |
zipfileUpdate, /* xUpdate */ |
zipfileBegin, /* xBegin */ |
0, /* xSync */ |
zipfileCommit, /* xCommit */ |
zipfileRollback, /* xRollback */ |
zipfileFindFunction, /* xFindMethod */ |
0, /* xRename */ |
}; |
|
int rc = sqlite3_create_module(db, "zipfile" , &zipfileModule, 0); |
if( rc==SQLITE_OK ) rc = sqlite3_overload_function(db, "zipfile_cds", -1); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_function(db, "zipfile", -1, SQLITE_UTF8, 0, 0, |
zipfileStep, zipfileFinal |
); |
} |
return rc; |
} |
#else /* SQLITE_OMIT_VIRTUALTABLE */ |
# define zipfileRegister(x) SQLITE_OK |
#endif |
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_zipfile_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
SQLITE_EXTENSION_INIT2(pApi); |
(void)pzErrMsg; /* Unused parameter */ |
return zipfileRegister(db); |
} |
|
/************************* End ../ext/misc/zipfile.c ********************/ |
/************************* Begin ../ext/misc/sqlar.c ******************/ |
/* |
** 2017-12-17 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** Utility functions sqlar_compress() and sqlar_uncompress(). Useful |
** for working with sqlar archives and used by the shell tool's built-in |
** sqlar support. |
*/ |
/* #include "sqlite3ext.h" */ |
SQLITE_EXTENSION_INIT1 |
#include <zlib.h> |
#include <assert.h> |
|
/* |
** Implementation of the "sqlar_compress(X)" SQL function. |
** |
** If the type of X is SQLITE_BLOB, and compressing that blob using |
** zlib utility function compress() yields a smaller blob, return the |
** compressed blob. Otherwise, return a copy of X. |
** |
** SQLar uses the "zlib format" for compressed content. The zlib format |
** contains a two-byte identification header and a four-byte checksum at |
** the end. This is different from ZIP which uses the raw deflate format. |
** |
** Future enhancements to SQLar might add support for new compression formats. |
** If so, those new formats will be identified by alternative headers in the |
** compressed data. |
*/ |
static void sqlarCompressFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
assert( argc==1 ); |
if( sqlite3_value_type(argv[0])==SQLITE_BLOB ){ |
const Bytef *pData = sqlite3_value_blob(argv[0]); |
uLong nData = sqlite3_value_bytes(argv[0]); |
uLongf nOut = compressBound(nData); |
Bytef *pOut; |
|
pOut = (Bytef*)sqlite3_malloc(nOut); |
if( pOut==0 ){ |
sqlite3_result_error_nomem(context); |
return; |
}else{ |
if( Z_OK!=compress(pOut, &nOut, pData, nData) ){ |
sqlite3_result_error(context, "error in compress()", -1); |
}else if( nOut<nData ){ |
sqlite3_result_blob(context, pOut, nOut, SQLITE_TRANSIENT); |
}else{ |
sqlite3_result_value(context, argv[0]); |
} |
sqlite3_free(pOut); |
} |
}else{ |
sqlite3_result_value(context, argv[0]); |
} |
} |
|
/* |
** Implementation of the "sqlar_uncompress(X,SZ)" SQL function |
** |
** Parameter SZ is interpreted as an integer. If it is less than or |
** equal to zero, then this function returns a copy of X. Or, if |
** SZ is equal to the size of X when interpreted as a blob, also |
** return a copy of X. Otherwise, decompress blob X using zlib |
** utility function uncompress() and return the results (another |
** blob). |
*/ |
static void sqlarUncompressFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
uLong nData; |
uLongf sz; |
|
assert( argc==2 ); |
sz = sqlite3_value_int(argv[1]); |
|
if( sz<=0 || sz==(nData = sqlite3_value_bytes(argv[0])) ){ |
sqlite3_result_value(context, argv[0]); |
}else{ |
const Bytef *pData= sqlite3_value_blob(argv[0]); |
Bytef *pOut = sqlite3_malloc(sz); |
if( Z_OK!=uncompress(pOut, &sz, pData, nData) ){ |
sqlite3_result_error(context, "error in uncompress()", -1); |
}else{ |
sqlite3_result_blob(context, pOut, sz, SQLITE_TRANSIENT); |
} |
sqlite3_free(pOut); |
} |
} |
|
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_sqlar_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
int rc = SQLITE_OK; |
SQLITE_EXTENSION_INIT2(pApi); |
(void)pzErrMsg; /* Unused parameter */ |
rc = sqlite3_create_function(db, "sqlar_compress", 1, |
SQLITE_UTF8|SQLITE_INNOCUOUS, 0, |
sqlarCompressFunc, 0, 0); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_function(db, "sqlar_uncompress", 2, |
SQLITE_UTF8|SQLITE_INNOCUOUS, 0, |
sqlarUncompressFunc, 0, 0); |
} |
return rc; |
} |
|
/************************* End ../ext/misc/sqlar.c ********************/ |
#endif |
/************************* Begin ../ext/expert/sqlite3expert.h ******************/ |
/* |
** 2017 April 07 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
************************************************************************* |
*/ |
#if !defined(SQLITEEXPERT_H) |
#define SQLITEEXPERT_H 1 |
/* #include "sqlite3.h" */ |
|
typedef struct sqlite3expert sqlite3expert; |
|
/* |
** Create a new sqlite3expert object. |
** |
** If successful, a pointer to the new object is returned and (*pzErr) set |
** to NULL. Or, if an error occurs, NULL is returned and (*pzErr) set to |
** an English-language error message. In this case it is the responsibility |
** of the caller to eventually free the error message buffer using |
** sqlite3_free(). |
*/ |
sqlite3expert *sqlite3_expert_new(sqlite3 *db, char **pzErr); |
|
/* |
** Configure an sqlite3expert object. |
** |
** EXPERT_CONFIG_SAMPLE: |
** By default, sqlite3_expert_analyze() generates sqlite_stat1 data for |
** each candidate index. This involves scanning and sorting the entire |
** contents of each user database table once for each candidate index |
** associated with the table. For large databases, this can be |
** prohibitively slow. This option allows the sqlite3expert object to |
** be configured so that sqlite_stat1 data is instead generated based on a |
** subset of each table, or so that no sqlite_stat1 data is used at all. |
** |
** A single integer argument is passed to this option. If the value is less |
** than or equal to zero, then no sqlite_stat1 data is generated or used by |
** the analysis - indexes are recommended based on the database schema only. |
** Or, if the value is 100 or greater, complete sqlite_stat1 data is |
** generated for each candidate index (this is the default). Finally, if the |
** value falls between 0 and 100, then it represents the percentage of user |
** table rows that should be considered when generating sqlite_stat1 data. |
** |
** Examples: |
** |
** // Do not generate any sqlite_stat1 data |
** sqlite3_expert_config(pExpert, EXPERT_CONFIG_SAMPLE, 0); |
** |
** // Generate sqlite_stat1 data based on 10% of the rows in each table. |
** sqlite3_expert_config(pExpert, EXPERT_CONFIG_SAMPLE, 10); |
*/ |
int sqlite3_expert_config(sqlite3expert *p, int op, ...); |
|
#define EXPERT_CONFIG_SAMPLE 1 /* int */ |
|
/* |
** Specify zero or more SQL statements to be included in the analysis. |
** |
** Buffer zSql must contain zero or more complete SQL statements. This |
** function parses all statements contained in the buffer and adds them |
** to the internal list of statements to analyze. If successful, SQLITE_OK |
** is returned and (*pzErr) set to NULL. Or, if an error occurs - for example |
** due to a error in the SQL - an SQLite error code is returned and (*pzErr) |
** may be set to point to an English language error message. In this case |
** the caller is responsible for eventually freeing the error message buffer |
** using sqlite3_free(). |
** |
** If an error does occur while processing one of the statements in the |
** buffer passed as the second argument, none of the statements in the |
** buffer are added to the analysis. |
** |
** This function must be called before sqlite3_expert_analyze(). If a call |
** to this function is made on an sqlite3expert object that has already |
** been passed to sqlite3_expert_analyze() SQLITE_MISUSE is returned |
** immediately and no statements are added to the analysis. |
*/ |
int sqlite3_expert_sql( |
sqlite3expert *p, /* From a successful sqlite3_expert_new() */ |
const char *zSql, /* SQL statement(s) to add */ |
char **pzErr /* OUT: Error message (if any) */ |
); |
|
|
/* |
** This function is called after the sqlite3expert object has been configured |
** with all SQL statements using sqlite3_expert_sql() to actually perform |
** the analysis. Once this function has been called, it is not possible to |
** add further SQL statements to the analysis. |
** |
** If successful, SQLITE_OK is returned and (*pzErr) is set to NULL. Or, if |
** an error occurs, an SQLite error code is returned and (*pzErr) set to |
** point to a buffer containing an English language error message. In this |
** case it is the responsibility of the caller to eventually free the buffer |
** using sqlite3_free(). |
** |
** If an error does occur within this function, the sqlite3expert object |
** is no longer useful for any purpose. At that point it is no longer |
** possible to add further SQL statements to the object or to re-attempt |
** the analysis. The sqlite3expert object must still be freed using a call |
** sqlite3_expert_destroy(). |
*/ |
int sqlite3_expert_analyze(sqlite3expert *p, char **pzErr); |
|
/* |
** Return the total number of statements loaded using sqlite3_expert_sql(). |
** The total number of SQL statements may be different from the total number |
** to calls to sqlite3_expert_sql(). |
*/ |
int sqlite3_expert_count(sqlite3expert*); |
|
/* |
** Return a component of the report. |
** |
** This function is called after sqlite3_expert_analyze() to extract the |
** results of the analysis. Each call to this function returns either a |
** NULL pointer or a pointer to a buffer containing a nul-terminated string. |
** The value passed as the third argument must be one of the EXPERT_REPORT_* |
** #define constants defined below. |
** |
** For some EXPERT_REPORT_* parameters, the buffer returned contains |
** information relating to a specific SQL statement. In these cases that |
** SQL statement is identified by the value passed as the second argument. |
** SQL statements are numbered from 0 in the order in which they are parsed. |
** If an out-of-range value (less than zero or equal to or greater than the |
** value returned by sqlite3_expert_count()) is passed as the second argument |
** along with such an EXPERT_REPORT_* parameter, NULL is always returned. |
** |
** EXPERT_REPORT_SQL: |
** Return the text of SQL statement iStmt. |
** |
** EXPERT_REPORT_INDEXES: |
** Return a buffer containing the CREATE INDEX statements for all recommended |
** indexes for statement iStmt. If there are no new recommeded indexes, NULL |
** is returned. |
** |
** EXPERT_REPORT_PLAN: |
** Return a buffer containing the EXPLAIN QUERY PLAN output for SQL query |
** iStmt after the proposed indexes have been added to the database schema. |
** |
** EXPERT_REPORT_CANDIDATES: |
** Return a pointer to a buffer containing the CREATE INDEX statements |
** for all indexes that were tested (for all SQL statements). The iStmt |
** parameter is ignored for EXPERT_REPORT_CANDIDATES calls. |
*/ |
const char *sqlite3_expert_report(sqlite3expert*, int iStmt, int eReport); |
|
/* |
** Values for the third argument passed to sqlite3_expert_report(). |
*/ |
#define EXPERT_REPORT_SQL 1 |
#define EXPERT_REPORT_INDEXES 2 |
#define EXPERT_REPORT_PLAN 3 |
#define EXPERT_REPORT_CANDIDATES 4 |
|
/* |
** Free an (sqlite3expert*) handle and all associated resources. There |
** should be one call to this function for each successful call to |
** sqlite3-expert_new(). |
*/ |
void sqlite3_expert_destroy(sqlite3expert*); |
|
#endif /* !defined(SQLITEEXPERT_H) */ |
|
/************************* End ../ext/expert/sqlite3expert.h ********************/ |
/************************* Begin ../ext/expert/sqlite3expert.c ******************/ |
/* |
** 2017 April 09 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
************************************************************************* |
*/ |
/* #include "sqlite3expert.h" */ |
#include <assert.h> |
#include <string.h> |
#include <stdio.h> |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
|
/* typedef sqlite3_int64 i64; */ |
/* typedef sqlite3_uint64 u64; */ |
|
typedef struct IdxColumn IdxColumn; |
typedef struct IdxConstraint IdxConstraint; |
typedef struct IdxScan IdxScan; |
typedef struct IdxStatement IdxStatement; |
typedef struct IdxTable IdxTable; |
typedef struct IdxWrite IdxWrite; |
|
#define STRLEN (int)strlen |
|
/* |
** A temp table name that we assume no user database will actually use. |
** If this assumption proves incorrect triggers on the table with the |
** conflicting name will be ignored. |
*/ |
#define UNIQUE_TABLE_NAME "t592690916721053953805701627921227776" |
|
/* |
** A single constraint. Equivalent to either "col = ?" or "col < ?" (or |
** any other type of single-ended range constraint on a column). |
** |
** pLink: |
** Used to temporarily link IdxConstraint objects into lists while |
** creating candidate indexes. |
*/ |
struct IdxConstraint { |
char *zColl; /* Collation sequence */ |
int bRange; /* True for range, false for eq */ |
int iCol; /* Constrained table column */ |
int bFlag; /* Used by idxFindCompatible() */ |
int bDesc; /* True if ORDER BY <expr> DESC */ |
IdxConstraint *pNext; /* Next constraint in pEq or pRange list */ |
IdxConstraint *pLink; /* See above */ |
}; |
|
/* |
** A single scan of a single table. |
*/ |
struct IdxScan { |
IdxTable *pTab; /* Associated table object */ |
int iDb; /* Database containing table zTable */ |
i64 covering; /* Mask of columns required for cov. index */ |
IdxConstraint *pOrder; /* ORDER BY columns */ |
IdxConstraint *pEq; /* List of == constraints */ |
IdxConstraint *pRange; /* List of < constraints */ |
IdxScan *pNextScan; /* Next IdxScan object for same analysis */ |
}; |
|
/* |
** Information regarding a single database table. Extracted from |
** "PRAGMA table_info" by function idxGetTableInfo(). |
*/ |
struct IdxColumn { |
char *zName; |
char *zColl; |
int iPk; |
}; |
struct IdxTable { |
int nCol; |
char *zName; /* Table name */ |
IdxColumn *aCol; |
IdxTable *pNext; /* Next table in linked list of all tables */ |
}; |
|
/* |
** An object of the following type is created for each unique table/write-op |
** seen. The objects are stored in a singly-linked list beginning at |
** sqlite3expert.pWrite. |
*/ |
struct IdxWrite { |
IdxTable *pTab; |
int eOp; /* SQLITE_UPDATE, DELETE or INSERT */ |
IdxWrite *pNext; |
}; |
|
/* |
** Each statement being analyzed is represented by an instance of this |
** structure. |
*/ |
struct IdxStatement { |
int iId; /* Statement number */ |
char *zSql; /* SQL statement */ |
char *zIdx; /* Indexes */ |
char *zEQP; /* Plan */ |
IdxStatement *pNext; |
}; |
|
|
/* |
** A hash table for storing strings. With space for a payload string |
** with each entry. Methods are: |
** |
** idxHashInit() |
** idxHashClear() |
** idxHashAdd() |
** idxHashSearch() |
*/ |
#define IDX_HASH_SIZE 1023 |
typedef struct IdxHashEntry IdxHashEntry; |
typedef struct IdxHash IdxHash; |
struct IdxHashEntry { |
char *zKey; /* nul-terminated key */ |
char *zVal; /* nul-terminated value string */ |
char *zVal2; /* nul-terminated value string 2 */ |
IdxHashEntry *pHashNext; /* Next entry in same hash bucket */ |
IdxHashEntry *pNext; /* Next entry in hash */ |
}; |
struct IdxHash { |
IdxHashEntry *pFirst; |
IdxHashEntry *aHash[IDX_HASH_SIZE]; |
}; |
|
/* |
** sqlite3expert object. |
*/ |
struct sqlite3expert { |
int iSample; /* Percentage of tables to sample for stat1 */ |
sqlite3 *db; /* User database */ |
sqlite3 *dbm; /* In-memory db for this analysis */ |
sqlite3 *dbv; /* Vtab schema for this analysis */ |
IdxTable *pTable; /* List of all IdxTable objects */ |
IdxScan *pScan; /* List of scan objects */ |
IdxWrite *pWrite; /* List of write objects */ |
IdxStatement *pStatement; /* List of IdxStatement objects */ |
int bRun; /* True once analysis has run */ |
char **pzErrmsg; |
int rc; /* Error code from whereinfo hook */ |
IdxHash hIdx; /* Hash containing all candidate indexes */ |
char *zCandidates; /* For EXPERT_REPORT_CANDIDATES */ |
}; |
|
|
/* |
** Allocate and return nByte bytes of zeroed memory using sqlite3_malloc(). |
** If the allocation fails, set *pRc to SQLITE_NOMEM and return NULL. |
*/ |
static void *idxMalloc(int *pRc, int nByte){ |
void *pRet; |
assert( *pRc==SQLITE_OK ); |
assert( nByte>0 ); |
pRet = sqlite3_malloc(nByte); |
if( pRet ){ |
memset(pRet, 0, nByte); |
}else{ |
*pRc = SQLITE_NOMEM; |
} |
return pRet; |
} |
|
/* |
** Initialize an IdxHash hash table. |
*/ |
static void idxHashInit(IdxHash *pHash){ |
memset(pHash, 0, sizeof(IdxHash)); |
} |
|
/* |
** Reset an IdxHash hash table. |
*/ |
static void idxHashClear(IdxHash *pHash){ |
int i; |
for(i=0; i<IDX_HASH_SIZE; i++){ |
IdxHashEntry *pEntry; |
IdxHashEntry *pNext; |
for(pEntry=pHash->aHash[i]; pEntry; pEntry=pNext){ |
pNext = pEntry->pHashNext; |
sqlite3_free(pEntry->zVal2); |
sqlite3_free(pEntry); |
} |
} |
memset(pHash, 0, sizeof(IdxHash)); |
} |
|
/* |
** Return the index of the hash bucket that the string specified by the |
** arguments to this function belongs. |
*/ |
static int idxHashString(const char *z, int n){ |
unsigned int ret = 0; |
int i; |
for(i=0; i<n; i++){ |
ret += (ret<<3) + (unsigned char)(z[i]); |
} |
return (int)(ret % IDX_HASH_SIZE); |
} |
|
/* |
** If zKey is already present in the hash table, return non-zero and do |
** nothing. Otherwise, add an entry with key zKey and payload string zVal to |
** the hash table passed as the second argument. |
*/ |
static int idxHashAdd( |
int *pRc, |
IdxHash *pHash, |
const char *zKey, |
const char *zVal |
){ |
int nKey = STRLEN(zKey); |
int iHash = idxHashString(zKey, nKey); |
int nVal = (zVal ? STRLEN(zVal) : 0); |
IdxHashEntry *pEntry; |
assert( iHash>=0 ); |
for(pEntry=pHash->aHash[iHash]; pEntry; pEntry=pEntry->pHashNext){ |
if( STRLEN(pEntry->zKey)==nKey && 0==memcmp(pEntry->zKey, zKey, nKey) ){ |
return 1; |
} |
} |
pEntry = idxMalloc(pRc, sizeof(IdxHashEntry) + nKey+1 + nVal+1); |
if( pEntry ){ |
pEntry->zKey = (char*)&pEntry[1]; |
memcpy(pEntry->zKey, zKey, nKey); |
if( zVal ){ |
pEntry->zVal = &pEntry->zKey[nKey+1]; |
memcpy(pEntry->zVal, zVal, nVal); |
} |
pEntry->pHashNext = pHash->aHash[iHash]; |
pHash->aHash[iHash] = pEntry; |
|
pEntry->pNext = pHash->pFirst; |
pHash->pFirst = pEntry; |
} |
return 0; |
} |
|
/* |
** If zKey/nKey is present in the hash table, return a pointer to the |
** hash-entry object. |
*/ |
static IdxHashEntry *idxHashFind(IdxHash *pHash, const char *zKey, int nKey){ |
int iHash; |
IdxHashEntry *pEntry; |
if( nKey<0 ) nKey = STRLEN(zKey); |
iHash = idxHashString(zKey, nKey); |
assert( iHash>=0 ); |
for(pEntry=pHash->aHash[iHash]; pEntry; pEntry=pEntry->pHashNext){ |
if( STRLEN(pEntry->zKey)==nKey && 0==memcmp(pEntry->zKey, zKey, nKey) ){ |
return pEntry; |
} |
} |
return 0; |
} |
|
/* |
** If the hash table contains an entry with a key equal to the string |
** passed as the final two arguments to this function, return a pointer |
** to the payload string. Otherwise, if zKey/nKey is not present in the |
** hash table, return NULL. |
*/ |
static const char *idxHashSearch(IdxHash *pHash, const char *zKey, int nKey){ |
IdxHashEntry *pEntry = idxHashFind(pHash, zKey, nKey); |
if( pEntry ) return pEntry->zVal; |
return 0; |
} |
|
/* |
** Allocate and return a new IdxConstraint object. Set the IdxConstraint.zColl |
** variable to point to a copy of nul-terminated string zColl. |
*/ |
static IdxConstraint *idxNewConstraint(int *pRc, const char *zColl){ |
IdxConstraint *pNew; |
int nColl = STRLEN(zColl); |
|
assert( *pRc==SQLITE_OK ); |
pNew = (IdxConstraint*)idxMalloc(pRc, sizeof(IdxConstraint) * nColl + 1); |
if( pNew ){ |
pNew->zColl = (char*)&pNew[1]; |
memcpy(pNew->zColl, zColl, nColl+1); |
} |
return pNew; |
} |
|
/* |
** An error associated with database handle db has just occurred. Pass |
** the error message to callback function xOut. |
*/ |
static void idxDatabaseError( |
sqlite3 *db, /* Database handle */ |
char **pzErrmsg /* Write error here */ |
){ |
*pzErrmsg = sqlite3_mprintf("%s", sqlite3_errmsg(db)); |
} |
|
/* |
** Prepare an SQL statement. |
*/ |
static int idxPrepareStmt( |
sqlite3 *db, /* Database handle to compile against */ |
sqlite3_stmt **ppStmt, /* OUT: Compiled SQL statement */ |
char **pzErrmsg, /* OUT: sqlite3_malloc()ed error message */ |
const char *zSql /* SQL statement to compile */ |
){ |
int rc = sqlite3_prepare_v2(db, zSql, -1, ppStmt, 0); |
if( rc!=SQLITE_OK ){ |
*ppStmt = 0; |
idxDatabaseError(db, pzErrmsg); |
} |
return rc; |
} |
|
/* |
** Prepare an SQL statement using the results of a printf() formatting. |
*/ |
static int idxPrintfPrepareStmt( |
sqlite3 *db, /* Database handle to compile against */ |
sqlite3_stmt **ppStmt, /* OUT: Compiled SQL statement */ |
char **pzErrmsg, /* OUT: sqlite3_malloc()ed error message */ |
const char *zFmt, /* printf() format of SQL statement */ |
... /* Trailing printf() arguments */ |
){ |
va_list ap; |
int rc; |
char *zSql; |
va_start(ap, zFmt); |
zSql = sqlite3_vmprintf(zFmt, ap); |
if( zSql==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
rc = idxPrepareStmt(db, ppStmt, pzErrmsg, zSql); |
sqlite3_free(zSql); |
} |
va_end(ap); |
return rc; |
} |
|
|
/************************************************************************* |
** Beginning of virtual table implementation. |
*/ |
typedef struct ExpertVtab ExpertVtab; |
struct ExpertVtab { |
sqlite3_vtab base; |
IdxTable *pTab; |
sqlite3expert *pExpert; |
}; |
|
typedef struct ExpertCsr ExpertCsr; |
struct ExpertCsr { |
sqlite3_vtab_cursor base; |
sqlite3_stmt *pData; |
}; |
|
static char *expertDequote(const char *zIn){ |
int n = STRLEN(zIn); |
char *zRet = sqlite3_malloc(n); |
|
assert( zIn[0]=='\'' ); |
assert( zIn[n-1]=='\'' ); |
|
if( zRet ){ |
int iOut = 0; |
int iIn = 0; |
for(iIn=1; iIn<(n-1); iIn++){ |
if( zIn[iIn]=='\'' ){ |
assert( zIn[iIn+1]=='\'' ); |
iIn++; |
} |
zRet[iOut++] = zIn[iIn]; |
} |
zRet[iOut] = '\0'; |
} |
|
return zRet; |
} |
|
/* |
** This function is the implementation of both the xConnect and xCreate |
** methods of the r-tree virtual table. |
** |
** argv[0] -> module name |
** argv[1] -> database name |
** argv[2] -> table name |
** argv[...] -> column names... |
*/ |
static int expertConnect( |
sqlite3 *db, |
void *pAux, |
int argc, const char *const*argv, |
sqlite3_vtab **ppVtab, |
char **pzErr |
){ |
sqlite3expert *pExpert = (sqlite3expert*)pAux; |
ExpertVtab *p = 0; |
int rc; |
|
if( argc!=4 ){ |
*pzErr = sqlite3_mprintf("internal error!"); |
rc = SQLITE_ERROR; |
}else{ |
char *zCreateTable = expertDequote(argv[3]); |
if( zCreateTable ){ |
rc = sqlite3_declare_vtab(db, zCreateTable); |
if( rc==SQLITE_OK ){ |
p = idxMalloc(&rc, sizeof(ExpertVtab)); |
} |
if( rc==SQLITE_OK ){ |
p->pExpert = pExpert; |
p->pTab = pExpert->pTable; |
assert( sqlite3_stricmp(p->pTab->zName, argv[2])==0 ); |
} |
sqlite3_free(zCreateTable); |
}else{ |
rc = SQLITE_NOMEM; |
} |
} |
|
*ppVtab = (sqlite3_vtab*)p; |
return rc; |
} |
|
static int expertDisconnect(sqlite3_vtab *pVtab){ |
ExpertVtab *p = (ExpertVtab*)pVtab; |
sqlite3_free(p); |
return SQLITE_OK; |
} |
|
static int expertBestIndex(sqlite3_vtab *pVtab, sqlite3_index_info *pIdxInfo){ |
ExpertVtab *p = (ExpertVtab*)pVtab; |
int rc = SQLITE_OK; |
int n = 0; |
IdxScan *pScan; |
const int opmask = |
SQLITE_INDEX_CONSTRAINT_EQ | SQLITE_INDEX_CONSTRAINT_GT | |
SQLITE_INDEX_CONSTRAINT_LT | SQLITE_INDEX_CONSTRAINT_GE | |
SQLITE_INDEX_CONSTRAINT_LE; |
|
pScan = idxMalloc(&rc, sizeof(IdxScan)); |
if( pScan ){ |
int i; |
|
/* Link the new scan object into the list */ |
pScan->pTab = p->pTab; |
pScan->pNextScan = p->pExpert->pScan; |
p->pExpert->pScan = pScan; |
|
/* Add the constraints to the IdxScan object */ |
for(i=0; i<pIdxInfo->nConstraint; i++){ |
struct sqlite3_index_constraint *pCons = &pIdxInfo->aConstraint[i]; |
if( pCons->usable |
&& pCons->iColumn>=0 |
&& p->pTab->aCol[pCons->iColumn].iPk==0 |
&& (pCons->op & opmask) |
){ |
IdxConstraint *pNew; |
const char *zColl = sqlite3_vtab_collation(pIdxInfo, i); |
pNew = idxNewConstraint(&rc, zColl); |
if( pNew ){ |
pNew->iCol = pCons->iColumn; |
if( pCons->op==SQLITE_INDEX_CONSTRAINT_EQ ){ |
pNew->pNext = pScan->pEq; |
pScan->pEq = pNew; |
}else{ |
pNew->bRange = 1; |
pNew->pNext = pScan->pRange; |
pScan->pRange = pNew; |
} |
} |
n++; |
pIdxInfo->aConstraintUsage[i].argvIndex = n; |
} |
} |
|
/* Add the ORDER BY to the IdxScan object */ |
for(i=pIdxInfo->nOrderBy-1; i>=0; i--){ |
int iCol = pIdxInfo->aOrderBy[i].iColumn; |
if( iCol>=0 ){ |
IdxConstraint *pNew = idxNewConstraint(&rc, p->pTab->aCol[iCol].zColl); |
if( pNew ){ |
pNew->iCol = iCol; |
pNew->bDesc = pIdxInfo->aOrderBy[i].desc; |
pNew->pNext = pScan->pOrder; |
pNew->pLink = pScan->pOrder; |
pScan->pOrder = pNew; |
n++; |
} |
} |
} |
} |
|
pIdxInfo->estimatedCost = 1000000.0 / (n+1); |
return rc; |
} |
|
static int expertUpdate( |
sqlite3_vtab *pVtab, |
int nData, |
sqlite3_value **azData, |
sqlite_int64 *pRowid |
){ |
(void)pVtab; |
(void)nData; |
(void)azData; |
(void)pRowid; |
return SQLITE_OK; |
} |
|
/* |
** Virtual table module xOpen method. |
*/ |
static int expertOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ |
int rc = SQLITE_OK; |
ExpertCsr *pCsr; |
(void)pVTab; |
pCsr = idxMalloc(&rc, sizeof(ExpertCsr)); |
*ppCursor = (sqlite3_vtab_cursor*)pCsr; |
return rc; |
} |
|
/* |
** Virtual table module xClose method. |
*/ |
static int expertClose(sqlite3_vtab_cursor *cur){ |
ExpertCsr *pCsr = (ExpertCsr*)cur; |
sqlite3_finalize(pCsr->pData); |
sqlite3_free(pCsr); |
return SQLITE_OK; |
} |
|
/* |
** Virtual table module xEof method. |
** |
** Return non-zero if the cursor does not currently point to a valid |
** record (i.e if the scan has finished), or zero otherwise. |
*/ |
static int expertEof(sqlite3_vtab_cursor *cur){ |
ExpertCsr *pCsr = (ExpertCsr*)cur; |
return pCsr->pData==0; |
} |
|
/* |
** Virtual table module xNext method. |
*/ |
static int expertNext(sqlite3_vtab_cursor *cur){ |
ExpertCsr *pCsr = (ExpertCsr*)cur; |
int rc = SQLITE_OK; |
|
assert( pCsr->pData ); |
rc = sqlite3_step(pCsr->pData); |
if( rc!=SQLITE_ROW ){ |
rc = sqlite3_finalize(pCsr->pData); |
pCsr->pData = 0; |
}else{ |
rc = SQLITE_OK; |
} |
|
return rc; |
} |
|
/* |
** Virtual table module xRowid method. |
*/ |
static int expertRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ |
(void)cur; |
*pRowid = 0; |
return SQLITE_OK; |
} |
|
/* |
** Virtual table module xColumn method. |
*/ |
static int expertColumn(sqlite3_vtab_cursor *cur, sqlite3_context *ctx, int i){ |
ExpertCsr *pCsr = (ExpertCsr*)cur; |
sqlite3_value *pVal; |
pVal = sqlite3_column_value(pCsr->pData, i); |
if( pVal ){ |
sqlite3_result_value(ctx, pVal); |
} |
return SQLITE_OK; |
} |
|
/* |
** Virtual table module xFilter method. |
*/ |
static int expertFilter( |
sqlite3_vtab_cursor *cur, |
int idxNum, const char *idxStr, |
int argc, sqlite3_value **argv |
){ |
ExpertCsr *pCsr = (ExpertCsr*)cur; |
ExpertVtab *pVtab = (ExpertVtab*)(cur->pVtab); |
sqlite3expert *pExpert = pVtab->pExpert; |
int rc; |
|
(void)idxNum; |
(void)idxStr; |
(void)argc; |
(void)argv; |
rc = sqlite3_finalize(pCsr->pData); |
pCsr->pData = 0; |
if( rc==SQLITE_OK ){ |
rc = idxPrintfPrepareStmt(pExpert->db, &pCsr->pData, &pVtab->base.zErrMsg, |
"SELECT * FROM main.%Q WHERE sample()", pVtab->pTab->zName |
); |
} |
|
if( rc==SQLITE_OK ){ |
rc = expertNext(cur); |
} |
return rc; |
} |
|
static int idxRegisterVtab(sqlite3expert *p){ |
static sqlite3_module expertModule = { |
2, /* iVersion */ |
expertConnect, /* xCreate - create a table */ |
expertConnect, /* xConnect - connect to an existing table */ |
expertBestIndex, /* xBestIndex - Determine search strategy */ |
expertDisconnect, /* xDisconnect - Disconnect from a table */ |
expertDisconnect, /* xDestroy - Drop a table */ |
expertOpen, /* xOpen - open a cursor */ |
expertClose, /* xClose - close a cursor */ |
expertFilter, /* xFilter - configure scan constraints */ |
expertNext, /* xNext - advance a cursor */ |
expertEof, /* xEof */ |
expertColumn, /* xColumn - read data */ |
expertRowid, /* xRowid - read data */ |
expertUpdate, /* xUpdate - write data */ |
0, /* xBegin - begin transaction */ |
0, /* xSync - sync transaction */ |
0, /* xCommit - commit transaction */ |
0, /* xRollback - rollback transaction */ |
0, /* xFindFunction - function overloading */ |
0, /* xRename - rename the table */ |
0, /* xSavepoint */ |
0, /* xRelease */ |
0, /* xRollbackTo */ |
0, /* xShadowName */ |
}; |
|
return sqlite3_create_module(p->dbv, "expert", &expertModule, (void*)p); |
} |
/* |
** End of virtual table implementation. |
*************************************************************************/ |
/* |
** Finalize SQL statement pStmt. If (*pRc) is SQLITE_OK when this function |
** is called, set it to the return value of sqlite3_finalize() before |
** returning. Otherwise, discard the sqlite3_finalize() return value. |
*/ |
static void idxFinalize(int *pRc, sqlite3_stmt *pStmt){ |
int rc = sqlite3_finalize(pStmt); |
if( *pRc==SQLITE_OK ) *pRc = rc; |
} |
|
/* |
** Attempt to allocate an IdxTable structure corresponding to table zTab |
** in the main database of connection db. If successful, set (*ppOut) to |
** point to the new object and return SQLITE_OK. Otherwise, return an |
** SQLite error code and set (*ppOut) to NULL. In this case *pzErrmsg may be |
** set to point to an error string. |
** |
** It is the responsibility of the caller to eventually free either the |
** IdxTable object or error message using sqlite3_free(). |
*/ |
static int idxGetTableInfo( |
sqlite3 *db, /* Database connection to read details from */ |
const char *zTab, /* Table name */ |
IdxTable **ppOut, /* OUT: New object (if successful) */ |
char **pzErrmsg /* OUT: Error message (if not) */ |
){ |
sqlite3_stmt *p1 = 0; |
int nCol = 0; |
int nTab = STRLEN(zTab); |
int nByte = sizeof(IdxTable) + nTab + 1; |
IdxTable *pNew = 0; |
int rc, rc2; |
char *pCsr = 0; |
int nPk = 0; |
|
rc = idxPrintfPrepareStmt(db, &p1, pzErrmsg, "PRAGMA table_xinfo=%Q", zTab); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(p1) ){ |
const char *zCol = (const char*)sqlite3_column_text(p1, 1); |
nByte += 1 + STRLEN(zCol); |
rc = sqlite3_table_column_metadata( |
db, "main", zTab, zCol, 0, &zCol, 0, 0, 0 |
); |
nByte += 1 + STRLEN(zCol); |
nCol++; |
nPk += (sqlite3_column_int(p1, 5)>0); |
} |
rc2 = sqlite3_reset(p1); |
if( rc==SQLITE_OK ) rc = rc2; |
|
nByte += sizeof(IdxColumn) * nCol; |
if( rc==SQLITE_OK ){ |
pNew = idxMalloc(&rc, nByte); |
} |
if( rc==SQLITE_OK ){ |
pNew->aCol = (IdxColumn*)&pNew[1]; |
pNew->nCol = nCol; |
pCsr = (char*)&pNew->aCol[nCol]; |
} |
|
nCol = 0; |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(p1) ){ |
const char *zCol = (const char*)sqlite3_column_text(p1, 1); |
int nCopy = STRLEN(zCol) + 1; |
pNew->aCol[nCol].zName = pCsr; |
pNew->aCol[nCol].iPk = (sqlite3_column_int(p1, 5)==1 && nPk==1); |
memcpy(pCsr, zCol, nCopy); |
pCsr += nCopy; |
|
rc = sqlite3_table_column_metadata( |
db, "main", zTab, zCol, 0, &zCol, 0, 0, 0 |
); |
if( rc==SQLITE_OK ){ |
nCopy = STRLEN(zCol) + 1; |
pNew->aCol[nCol].zColl = pCsr; |
memcpy(pCsr, zCol, nCopy); |
pCsr += nCopy; |
} |
|
nCol++; |
} |
idxFinalize(&rc, p1); |
|
if( rc!=SQLITE_OK ){ |
sqlite3_free(pNew); |
pNew = 0; |
}else{ |
pNew->zName = pCsr; |
memcpy(pNew->zName, zTab, nTab+1); |
} |
|
*ppOut = pNew; |
return rc; |
} |
|
/* |
** This function is a no-op if *pRc is set to anything other than |
** SQLITE_OK when it is called. |
** |
** If *pRc is initially set to SQLITE_OK, then the text specified by |
** the printf() style arguments is appended to zIn and the result returned |
** in a buffer allocated by sqlite3_malloc(). sqlite3_free() is called on |
** zIn before returning. |
*/ |
static char *idxAppendText(int *pRc, char *zIn, const char *zFmt, ...){ |
va_list ap; |
char *zAppend = 0; |
char *zRet = 0; |
int nIn = zIn ? STRLEN(zIn) : 0; |
int nAppend = 0; |
va_start(ap, zFmt); |
if( *pRc==SQLITE_OK ){ |
zAppend = sqlite3_vmprintf(zFmt, ap); |
if( zAppend ){ |
nAppend = STRLEN(zAppend); |
zRet = (char*)sqlite3_malloc(nIn + nAppend + 1); |
} |
if( zAppend && zRet ){ |
if( nIn ) memcpy(zRet, zIn, nIn); |
memcpy(&zRet[nIn], zAppend, nAppend+1); |
}else{ |
sqlite3_free(zRet); |
zRet = 0; |
*pRc = SQLITE_NOMEM; |
} |
sqlite3_free(zAppend); |
sqlite3_free(zIn); |
} |
va_end(ap); |
return zRet; |
} |
|
/* |
** Return true if zId must be quoted in order to use it as an SQL |
** identifier, or false otherwise. |
*/ |
static int idxIdentifierRequiresQuotes(const char *zId){ |
int i; |
for(i=0; zId[i]; i++){ |
if( !(zId[i]=='_') |
&& !(zId[i]>='0' && zId[i]<='9') |
&& !(zId[i]>='a' && zId[i]<='z') |
&& !(zId[i]>='A' && zId[i]<='Z') |
){ |
return 1; |
} |
} |
return 0; |
} |
|
/* |
** This function appends an index column definition suitable for constraint |
** pCons to the string passed as zIn and returns the result. |
*/ |
static char *idxAppendColDefn( |
int *pRc, /* IN/OUT: Error code */ |
char *zIn, /* Column defn accumulated so far */ |
IdxTable *pTab, /* Table index will be created on */ |
IdxConstraint *pCons |
){ |
char *zRet = zIn; |
IdxColumn *p = &pTab->aCol[pCons->iCol]; |
if( zRet ) zRet = idxAppendText(pRc, zRet, ", "); |
|
if( idxIdentifierRequiresQuotes(p->zName) ){ |
zRet = idxAppendText(pRc, zRet, "%Q", p->zName); |
}else{ |
zRet = idxAppendText(pRc, zRet, "%s", p->zName); |
} |
|
if( sqlite3_stricmp(p->zColl, pCons->zColl) ){ |
if( idxIdentifierRequiresQuotes(pCons->zColl) ){ |
zRet = idxAppendText(pRc, zRet, " COLLATE %Q", pCons->zColl); |
}else{ |
zRet = idxAppendText(pRc, zRet, " COLLATE %s", pCons->zColl); |
} |
} |
|
if( pCons->bDesc ){ |
zRet = idxAppendText(pRc, zRet, " DESC"); |
} |
return zRet; |
} |
|
/* |
** Search database dbm for an index compatible with the one idxCreateFromCons() |
** would create from arguments pScan, pEq and pTail. If no error occurs and |
** such an index is found, return non-zero. Or, if no such index is found, |
** return zero. |
** |
** If an error occurs, set *pRc to an SQLite error code and return zero. |
*/ |
static int idxFindCompatible( |
int *pRc, /* OUT: Error code */ |
sqlite3* dbm, /* Database to search */ |
IdxScan *pScan, /* Scan for table to search for index on */ |
IdxConstraint *pEq, /* List of == constraints */ |
IdxConstraint *pTail /* List of range constraints */ |
){ |
const char *zTbl = pScan->pTab->zName; |
sqlite3_stmt *pIdxList = 0; |
IdxConstraint *pIter; |
int nEq = 0; /* Number of elements in pEq */ |
int rc; |
|
/* Count the elements in list pEq */ |
for(pIter=pEq; pIter; pIter=pIter->pLink) nEq++; |
|
rc = idxPrintfPrepareStmt(dbm, &pIdxList, 0, "PRAGMA index_list=%Q", zTbl); |
while( rc==SQLITE_OK && sqlite3_step(pIdxList)==SQLITE_ROW ){ |
int bMatch = 1; |
IdxConstraint *pT = pTail; |
sqlite3_stmt *pInfo = 0; |
const char *zIdx = (const char*)sqlite3_column_text(pIdxList, 1); |
|
/* Zero the IdxConstraint.bFlag values in the pEq list */ |
for(pIter=pEq; pIter; pIter=pIter->pLink) pIter->bFlag = 0; |
|
rc = idxPrintfPrepareStmt(dbm, &pInfo, 0, "PRAGMA index_xInfo=%Q", zIdx); |
while( rc==SQLITE_OK && sqlite3_step(pInfo)==SQLITE_ROW ){ |
int iIdx = sqlite3_column_int(pInfo, 0); |
int iCol = sqlite3_column_int(pInfo, 1); |
const char *zColl = (const char*)sqlite3_column_text(pInfo, 4); |
|
if( iIdx<nEq ){ |
for(pIter=pEq; pIter; pIter=pIter->pLink){ |
if( pIter->bFlag ) continue; |
if( pIter->iCol!=iCol ) continue; |
if( sqlite3_stricmp(pIter->zColl, zColl) ) continue; |
pIter->bFlag = 1; |
break; |
} |
if( pIter==0 ){ |
bMatch = 0; |
break; |
} |
}else{ |
if( pT ){ |
if( pT->iCol!=iCol || sqlite3_stricmp(pT->zColl, zColl) ){ |
bMatch = 0; |
break; |
} |
pT = pT->pLink; |
} |
} |
} |
idxFinalize(&rc, pInfo); |
|
if( rc==SQLITE_OK && bMatch ){ |
sqlite3_finalize(pIdxList); |
return 1; |
} |
} |
idxFinalize(&rc, pIdxList); |
|
*pRc = rc; |
return 0; |
} |
|
static int idxCreateFromCons( |
sqlite3expert *p, |
IdxScan *pScan, |
IdxConstraint *pEq, |
IdxConstraint *pTail |
){ |
sqlite3 *dbm = p->dbm; |
int rc = SQLITE_OK; |
if( (pEq || pTail) && 0==idxFindCompatible(&rc, dbm, pScan, pEq, pTail) ){ |
IdxTable *pTab = pScan->pTab; |
char *zCols = 0; |
char *zIdx = 0; |
IdxConstraint *pCons; |
unsigned int h = 0; |
const char *zFmt; |
|
for(pCons=pEq; pCons; pCons=pCons->pLink){ |
zCols = idxAppendColDefn(&rc, zCols, pTab, pCons); |
} |
for(pCons=pTail; pCons; pCons=pCons->pLink){ |
zCols = idxAppendColDefn(&rc, zCols, pTab, pCons); |
} |
|
if( rc==SQLITE_OK ){ |
/* Hash the list of columns to come up with a name for the index */ |
const char *zTable = pScan->pTab->zName; |
char *zName; /* Index name */ |
int i; |
for(i=0; zCols[i]; i++){ |
h += ((h<<3) + zCols[i]); |
} |
zName = sqlite3_mprintf("%s_idx_%08x", zTable, h); |
if( zName==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
if( idxIdentifierRequiresQuotes(zTable) ){ |
zFmt = "CREATE INDEX '%q' ON %Q(%s)"; |
}else{ |
zFmt = "CREATE INDEX %s ON %s(%s)"; |
} |
zIdx = sqlite3_mprintf(zFmt, zName, zTable, zCols); |
if( !zIdx ){ |
rc = SQLITE_NOMEM; |
}else{ |
rc = sqlite3_exec(dbm, zIdx, 0, 0, p->pzErrmsg); |
idxHashAdd(&rc, &p->hIdx, zName, zIdx); |
} |
sqlite3_free(zName); |
sqlite3_free(zIdx); |
} |
} |
|
sqlite3_free(zCols); |
} |
return rc; |
} |
|
/* |
** Return true if list pList (linked by IdxConstraint.pLink) contains |
** a constraint compatible with *p. Otherwise return false. |
*/ |
static int idxFindConstraint(IdxConstraint *pList, IdxConstraint *p){ |
IdxConstraint *pCmp; |
for(pCmp=pList; pCmp; pCmp=pCmp->pLink){ |
if( p->iCol==pCmp->iCol ) return 1; |
} |
return 0; |
} |
|
static int idxCreateFromWhere( |
sqlite3expert *p, |
IdxScan *pScan, /* Create indexes for this scan */ |
IdxConstraint *pTail /* range/ORDER BY constraints for inclusion */ |
){ |
IdxConstraint *p1 = 0; |
IdxConstraint *pCon; |
int rc; |
|
/* Gather up all the == constraints. */ |
for(pCon=pScan->pEq; pCon; pCon=pCon->pNext){ |
if( !idxFindConstraint(p1, pCon) && !idxFindConstraint(pTail, pCon) ){ |
pCon->pLink = p1; |
p1 = pCon; |
} |
} |
|
/* Create an index using the == constraints collected above. And the |
** range constraint/ORDER BY terms passed in by the caller, if any. */ |
rc = idxCreateFromCons(p, pScan, p1, pTail); |
|
/* If no range/ORDER BY passed by the caller, create a version of the |
** index for each range constraint. */ |
if( pTail==0 ){ |
for(pCon=pScan->pRange; rc==SQLITE_OK && pCon; pCon=pCon->pNext){ |
assert( pCon->pLink==0 ); |
if( !idxFindConstraint(p1, pCon) && !idxFindConstraint(pTail, pCon) ){ |
rc = idxCreateFromCons(p, pScan, p1, pCon); |
} |
} |
} |
|
return rc; |
} |
|
/* |
** Create candidate indexes in database [dbm] based on the data in |
** linked-list pScan. |
*/ |
static int idxCreateCandidates(sqlite3expert *p){ |
int rc = SQLITE_OK; |
IdxScan *pIter; |
|
for(pIter=p->pScan; pIter && rc==SQLITE_OK; pIter=pIter->pNextScan){ |
rc = idxCreateFromWhere(p, pIter, 0); |
if( rc==SQLITE_OK && pIter->pOrder ){ |
rc = idxCreateFromWhere(p, pIter, pIter->pOrder); |
} |
} |
|
return rc; |
} |
|
/* |
** Free all elements of the linked list starting at pConstraint. |
*/ |
static void idxConstraintFree(IdxConstraint *pConstraint){ |
IdxConstraint *pNext; |
IdxConstraint *p; |
|
for(p=pConstraint; p; p=pNext){ |
pNext = p->pNext; |
sqlite3_free(p); |
} |
} |
|
/* |
** Free all elements of the linked list starting from pScan up until pLast |
** (pLast is not freed). |
*/ |
static void idxScanFree(IdxScan *pScan, IdxScan *pLast){ |
IdxScan *p; |
IdxScan *pNext; |
for(p=pScan; p!=pLast; p=pNext){ |
pNext = p->pNextScan; |
idxConstraintFree(p->pOrder); |
idxConstraintFree(p->pEq); |
idxConstraintFree(p->pRange); |
sqlite3_free(p); |
} |
} |
|
/* |
** Free all elements of the linked list starting from pStatement up |
** until pLast (pLast is not freed). |
*/ |
static void idxStatementFree(IdxStatement *pStatement, IdxStatement *pLast){ |
IdxStatement *p; |
IdxStatement *pNext; |
for(p=pStatement; p!=pLast; p=pNext){ |
pNext = p->pNext; |
sqlite3_free(p->zEQP); |
sqlite3_free(p->zIdx); |
sqlite3_free(p); |
} |
} |
|
/* |
** Free the linked list of IdxTable objects starting at pTab. |
*/ |
static void idxTableFree(IdxTable *pTab){ |
IdxTable *pIter; |
IdxTable *pNext; |
for(pIter=pTab; pIter; pIter=pNext){ |
pNext = pIter->pNext; |
sqlite3_free(pIter); |
} |
} |
|
/* |
** Free the linked list of IdxWrite objects starting at pTab. |
*/ |
static void idxWriteFree(IdxWrite *pTab){ |
IdxWrite *pIter; |
IdxWrite *pNext; |
for(pIter=pTab; pIter; pIter=pNext){ |
pNext = pIter->pNext; |
sqlite3_free(pIter); |
} |
} |
|
|
|
/* |
** This function is called after candidate indexes have been created. It |
** runs all the queries to see which indexes they prefer, and populates |
** IdxStatement.zIdx and IdxStatement.zEQP with the results. |
*/ |
int idxFindIndexes( |
sqlite3expert *p, |
char **pzErr /* OUT: Error message (sqlite3_malloc) */ |
){ |
IdxStatement *pStmt; |
sqlite3 *dbm = p->dbm; |
int rc = SQLITE_OK; |
|
IdxHash hIdx; |
idxHashInit(&hIdx); |
|
for(pStmt=p->pStatement; rc==SQLITE_OK && pStmt; pStmt=pStmt->pNext){ |
IdxHashEntry *pEntry; |
sqlite3_stmt *pExplain = 0; |
idxHashClear(&hIdx); |
rc = idxPrintfPrepareStmt(dbm, &pExplain, pzErr, |
"EXPLAIN QUERY PLAN %s", pStmt->zSql |
); |
while( rc==SQLITE_OK && sqlite3_step(pExplain)==SQLITE_ROW ){ |
/* int iId = sqlite3_column_int(pExplain, 0); */ |
/* int iParent = sqlite3_column_int(pExplain, 1); */ |
/* int iNotUsed = sqlite3_column_int(pExplain, 2); */ |
const char *zDetail = (const char*)sqlite3_column_text(pExplain, 3); |
int nDetail; |
int i; |
|
if( !zDetail ) continue; |
nDetail = STRLEN(zDetail); |
|
for(i=0; i<nDetail; i++){ |
const char *zIdx = 0; |
if( i+13<nDetail && memcmp(&zDetail[i], " USING INDEX ", 13)==0 ){ |
zIdx = &zDetail[i+13]; |
}else if( i+22<nDetail |
&& memcmp(&zDetail[i], " USING COVERING INDEX ", 22)==0 |
){ |
zIdx = &zDetail[i+22]; |
} |
if( zIdx ){ |
const char *zSql; |
int nIdx = 0; |
while( zIdx[nIdx]!='\0' && (zIdx[nIdx]!=' ' || zIdx[nIdx+1]!='(') ){ |
nIdx++; |
} |
zSql = idxHashSearch(&p->hIdx, zIdx, nIdx); |
if( zSql ){ |
idxHashAdd(&rc, &hIdx, zSql, 0); |
if( rc ) goto find_indexes_out; |
} |
break; |
} |
} |
|
if( zDetail[0]!='-' ){ |
pStmt->zEQP = idxAppendText(&rc, pStmt->zEQP, "%s\n", zDetail); |
} |
} |
|
for(pEntry=hIdx.pFirst; pEntry; pEntry=pEntry->pNext){ |
pStmt->zIdx = idxAppendText(&rc, pStmt->zIdx, "%s;\n", pEntry->zKey); |
} |
|
idxFinalize(&rc, pExplain); |
} |
|
find_indexes_out: |
idxHashClear(&hIdx); |
return rc; |
} |
|
static int idxAuthCallback( |
void *pCtx, |
int eOp, |
const char *z3, |
const char *z4, |
const char *zDb, |
const char *zTrigger |
){ |
int rc = SQLITE_OK; |
(void)z4; |
(void)zTrigger; |
if( eOp==SQLITE_INSERT || eOp==SQLITE_UPDATE || eOp==SQLITE_DELETE ){ |
if( sqlite3_stricmp(zDb, "main")==0 ){ |
sqlite3expert *p = (sqlite3expert*)pCtx; |
IdxTable *pTab; |
for(pTab=p->pTable; pTab; pTab=pTab->pNext){ |
if( 0==sqlite3_stricmp(z3, pTab->zName) ) break; |
} |
if( pTab ){ |
IdxWrite *pWrite; |
for(pWrite=p->pWrite; pWrite; pWrite=pWrite->pNext){ |
if( pWrite->pTab==pTab && pWrite->eOp==eOp ) break; |
} |
if( pWrite==0 ){ |
pWrite = idxMalloc(&rc, sizeof(IdxWrite)); |
if( rc==SQLITE_OK ){ |
pWrite->pTab = pTab; |
pWrite->eOp = eOp; |
pWrite->pNext = p->pWrite; |
p->pWrite = pWrite; |
} |
} |
} |
} |
} |
return rc; |
} |
|
static int idxProcessOneTrigger( |
sqlite3expert *p, |
IdxWrite *pWrite, |
char **pzErr |
){ |
static const char *zInt = UNIQUE_TABLE_NAME; |
static const char *zDrop = "DROP TABLE " UNIQUE_TABLE_NAME; |
IdxTable *pTab = pWrite->pTab; |
const char *zTab = pTab->zName; |
const char *zSql = |
"SELECT 'CREATE TEMP' || substr(sql, 7) FROM sqlite_schema " |
"WHERE tbl_name = %Q AND type IN ('table', 'trigger') " |
"ORDER BY type;"; |
sqlite3_stmt *pSelect = 0; |
int rc = SQLITE_OK; |
char *zWrite = 0; |
|
/* Create the table and its triggers in the temp schema */ |
rc = idxPrintfPrepareStmt(p->db, &pSelect, pzErr, zSql, zTab, zTab); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pSelect) ){ |
const char *zCreate = (const char*)sqlite3_column_text(pSelect, 0); |
rc = sqlite3_exec(p->dbv, zCreate, 0, 0, pzErr); |
} |
idxFinalize(&rc, pSelect); |
|
/* Rename the table in the temp schema to zInt */ |
if( rc==SQLITE_OK ){ |
char *z = sqlite3_mprintf("ALTER TABLE temp.%Q RENAME TO %Q", zTab, zInt); |
if( z==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
rc = sqlite3_exec(p->dbv, z, 0, 0, pzErr); |
sqlite3_free(z); |
} |
} |
|
switch( pWrite->eOp ){ |
case SQLITE_INSERT: { |
int i; |
zWrite = idxAppendText(&rc, zWrite, "INSERT INTO %Q VALUES(", zInt); |
for(i=0; i<pTab->nCol; i++){ |
zWrite = idxAppendText(&rc, zWrite, "%s?", i==0 ? "" : ", "); |
} |
zWrite = idxAppendText(&rc, zWrite, ")"); |
break; |
} |
case SQLITE_UPDATE: { |
int i; |
zWrite = idxAppendText(&rc, zWrite, "UPDATE %Q SET ", zInt); |
for(i=0; i<pTab->nCol; i++){ |
zWrite = idxAppendText(&rc, zWrite, "%s%Q=?", i==0 ? "" : ", ", |
pTab->aCol[i].zName |
); |
} |
break; |
} |
default: { |
assert( pWrite->eOp==SQLITE_DELETE ); |
if( rc==SQLITE_OK ){ |
zWrite = sqlite3_mprintf("DELETE FROM %Q", zInt); |
if( zWrite==0 ) rc = SQLITE_NOMEM; |
} |
} |
} |
|
if( rc==SQLITE_OK ){ |
sqlite3_stmt *pX = 0; |
rc = sqlite3_prepare_v2(p->dbv, zWrite, -1, &pX, 0); |
idxFinalize(&rc, pX); |
if( rc!=SQLITE_OK ){ |
idxDatabaseError(p->dbv, pzErr); |
} |
} |
sqlite3_free(zWrite); |
|
if( rc==SQLITE_OK ){ |
rc = sqlite3_exec(p->dbv, zDrop, 0, 0, pzErr); |
} |
|
return rc; |
} |
|
static int idxProcessTriggers(sqlite3expert *p, char **pzErr){ |
int rc = SQLITE_OK; |
IdxWrite *pEnd = 0; |
IdxWrite *pFirst = p->pWrite; |
|
while( rc==SQLITE_OK && pFirst!=pEnd ){ |
IdxWrite *pIter; |
for(pIter=pFirst; rc==SQLITE_OK && pIter!=pEnd; pIter=pIter->pNext){ |
rc = idxProcessOneTrigger(p, pIter, pzErr); |
} |
pEnd = pFirst; |
pFirst = p->pWrite; |
} |
|
return rc; |
} |
|
|
static int idxCreateVtabSchema(sqlite3expert *p, char **pzErrmsg){ |
int rc = idxRegisterVtab(p); |
sqlite3_stmt *pSchema = 0; |
|
/* For each table in the main db schema: |
** |
** 1) Add an entry to the p->pTable list, and |
** 2) Create the equivalent virtual table in dbv. |
*/ |
rc = idxPrepareStmt(p->db, &pSchema, pzErrmsg, |
"SELECT type, name, sql, 1 FROM sqlite_schema " |
"WHERE type IN ('table','view') AND name NOT LIKE 'sqlite_%%' " |
" UNION ALL " |
"SELECT type, name, sql, 2 FROM sqlite_schema " |
"WHERE type = 'trigger'" |
" AND tbl_name IN(SELECT name FROM sqlite_schema WHERE type = 'view') " |
"ORDER BY 4, 1" |
); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pSchema) ){ |
const char *zType = (const char*)sqlite3_column_text(pSchema, 0); |
const char *zName = (const char*)sqlite3_column_text(pSchema, 1); |
const char *zSql = (const char*)sqlite3_column_text(pSchema, 2); |
|
if( zType[0]=='v' || zType[1]=='r' ){ |
rc = sqlite3_exec(p->dbv, zSql, 0, 0, pzErrmsg); |
}else{ |
IdxTable *pTab; |
rc = idxGetTableInfo(p->db, zName, &pTab, pzErrmsg); |
if( rc==SQLITE_OK ){ |
int i; |
char *zInner = 0; |
char *zOuter = 0; |
pTab->pNext = p->pTable; |
p->pTable = pTab; |
|
/* The statement the vtab will pass to sqlite3_declare_vtab() */ |
zInner = idxAppendText(&rc, 0, "CREATE TABLE x("); |
for(i=0; i<pTab->nCol; i++){ |
zInner = idxAppendText(&rc, zInner, "%s%Q COLLATE %s", |
(i==0 ? "" : ", "), pTab->aCol[i].zName, pTab->aCol[i].zColl |
); |
} |
zInner = idxAppendText(&rc, zInner, ")"); |
|
/* The CVT statement to create the vtab */ |
zOuter = idxAppendText(&rc, 0, |
"CREATE VIRTUAL TABLE %Q USING expert(%Q)", zName, zInner |
); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_exec(p->dbv, zOuter, 0, 0, pzErrmsg); |
} |
sqlite3_free(zInner); |
sqlite3_free(zOuter); |
} |
} |
} |
idxFinalize(&rc, pSchema); |
return rc; |
} |
|
struct IdxSampleCtx { |
int iTarget; |
double target; /* Target nRet/nRow value */ |
double nRow; /* Number of rows seen */ |
double nRet; /* Number of rows returned */ |
}; |
|
static void idxSampleFunc( |
sqlite3_context *pCtx, |
int argc, |
sqlite3_value **argv |
){ |
struct IdxSampleCtx *p = (struct IdxSampleCtx*)sqlite3_user_data(pCtx); |
int bRet; |
|
(void)argv; |
assert( argc==0 ); |
if( p->nRow==0.0 ){ |
bRet = 1; |
}else{ |
bRet = (p->nRet / p->nRow) <= p->target; |
if( bRet==0 ){ |
unsigned short rnd; |
sqlite3_randomness(2, (void*)&rnd); |
bRet = ((int)rnd % 100) <= p->iTarget; |
} |
} |
|
sqlite3_result_int(pCtx, bRet); |
p->nRow += 1.0; |
p->nRet += (double)bRet; |
} |
|
struct IdxRemCtx { |
int nSlot; |
struct IdxRemSlot { |
int eType; /* SQLITE_NULL, INTEGER, REAL, TEXT, BLOB */ |
i64 iVal; /* SQLITE_INTEGER value */ |
double rVal; /* SQLITE_FLOAT value */ |
int nByte; /* Bytes of space allocated at z */ |
int n; /* Size of buffer z */ |
char *z; /* SQLITE_TEXT/BLOB value */ |
} aSlot[1]; |
}; |
|
/* |
** Implementation of scalar function rem(). |
*/ |
static void idxRemFunc( |
sqlite3_context *pCtx, |
int argc, |
sqlite3_value **argv |
){ |
struct IdxRemCtx *p = (struct IdxRemCtx*)sqlite3_user_data(pCtx); |
struct IdxRemSlot *pSlot; |
int iSlot; |
assert( argc==2 ); |
|
iSlot = sqlite3_value_int(argv[0]); |
assert( iSlot<=p->nSlot ); |
pSlot = &p->aSlot[iSlot]; |
|
switch( pSlot->eType ){ |
case SQLITE_NULL: |
/* no-op */ |
break; |
|
case SQLITE_INTEGER: |
sqlite3_result_int64(pCtx, pSlot->iVal); |
break; |
|
case SQLITE_FLOAT: |
sqlite3_result_double(pCtx, pSlot->rVal); |
break; |
|
case SQLITE_BLOB: |
sqlite3_result_blob(pCtx, pSlot->z, pSlot->n, SQLITE_TRANSIENT); |
break; |
|
case SQLITE_TEXT: |
sqlite3_result_text(pCtx, pSlot->z, pSlot->n, SQLITE_TRANSIENT); |
break; |
} |
|
pSlot->eType = sqlite3_value_type(argv[1]); |
switch( pSlot->eType ){ |
case SQLITE_NULL: |
/* no-op */ |
break; |
|
case SQLITE_INTEGER: |
pSlot->iVal = sqlite3_value_int64(argv[1]); |
break; |
|
case SQLITE_FLOAT: |
pSlot->rVal = sqlite3_value_double(argv[1]); |
break; |
|
case SQLITE_BLOB: |
case SQLITE_TEXT: { |
int nByte = sqlite3_value_bytes(argv[1]); |
if( nByte>pSlot->nByte ){ |
char *zNew = (char*)sqlite3_realloc(pSlot->z, nByte*2); |
if( zNew==0 ){ |
sqlite3_result_error_nomem(pCtx); |
return; |
} |
pSlot->nByte = nByte*2; |
pSlot->z = zNew; |
} |
pSlot->n = nByte; |
if( pSlot->eType==SQLITE_BLOB ){ |
memcpy(pSlot->z, sqlite3_value_blob(argv[1]), nByte); |
}else{ |
memcpy(pSlot->z, sqlite3_value_text(argv[1]), nByte); |
} |
break; |
} |
} |
} |
|
static int idxLargestIndex(sqlite3 *db, int *pnMax, char **pzErr){ |
int rc = SQLITE_OK; |
const char *zMax = |
"SELECT max(i.seqno) FROM " |
" sqlite_schema AS s, " |
" pragma_index_list(s.name) AS l, " |
" pragma_index_info(l.name) AS i " |
"WHERE s.type = 'table'"; |
sqlite3_stmt *pMax = 0; |
|
*pnMax = 0; |
rc = idxPrepareStmt(db, &pMax, pzErr, zMax); |
if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pMax) ){ |
*pnMax = sqlite3_column_int(pMax, 0) + 1; |
} |
idxFinalize(&rc, pMax); |
|
return rc; |
} |
|
static int idxPopulateOneStat1( |
sqlite3expert *p, |
sqlite3_stmt *pIndexXInfo, |
sqlite3_stmt *pWriteStat, |
const char *zTab, |
const char *zIdx, |
char **pzErr |
){ |
char *zCols = 0; |
char *zOrder = 0; |
char *zQuery = 0; |
int nCol = 0; |
int i; |
sqlite3_stmt *pQuery = 0; |
int *aStat = 0; |
int rc = SQLITE_OK; |
|
assert( p->iSample>0 ); |
|
/* Formulate the query text */ |
sqlite3_bind_text(pIndexXInfo, 1, zIdx, -1, SQLITE_STATIC); |
while( SQLITE_OK==rc && SQLITE_ROW==sqlite3_step(pIndexXInfo) ){ |
const char *zComma = zCols==0 ? "" : ", "; |
const char *zName = (const char*)sqlite3_column_text(pIndexXInfo, 0); |
const char *zColl = (const char*)sqlite3_column_text(pIndexXInfo, 1); |
zCols = idxAppendText(&rc, zCols, |
"%sx.%Q IS rem(%d, x.%Q) COLLATE %s", zComma, zName, nCol, zName, zColl |
); |
zOrder = idxAppendText(&rc, zOrder, "%s%d", zComma, ++nCol); |
} |
sqlite3_reset(pIndexXInfo); |
if( rc==SQLITE_OK ){ |
if( p->iSample==100 ){ |
zQuery = sqlite3_mprintf( |
"SELECT %s FROM %Q x ORDER BY %s", zCols, zTab, zOrder |
); |
}else{ |
zQuery = sqlite3_mprintf( |
"SELECT %s FROM temp."UNIQUE_TABLE_NAME" x ORDER BY %s", zCols, zOrder |
); |
} |
} |
sqlite3_free(zCols); |
sqlite3_free(zOrder); |
|
/* Formulate the query text */ |
if( rc==SQLITE_OK ){ |
sqlite3 *dbrem = (p->iSample==100 ? p->db : p->dbv); |
rc = idxPrepareStmt(dbrem, &pQuery, pzErr, zQuery); |
} |
sqlite3_free(zQuery); |
|
if( rc==SQLITE_OK ){ |
aStat = (int*)idxMalloc(&rc, sizeof(int)*(nCol+1)); |
} |
if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pQuery) ){ |
IdxHashEntry *pEntry; |
char *zStat = 0; |
for(i=0; i<=nCol; i++) aStat[i] = 1; |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pQuery) ){ |
aStat[0]++; |
for(i=0; i<nCol; i++){ |
if( sqlite3_column_int(pQuery, i)==0 ) break; |
} |
for(/*no-op*/; i<nCol; i++){ |
aStat[i+1]++; |
} |
} |
|
if( rc==SQLITE_OK ){ |
int s0 = aStat[0]; |
zStat = sqlite3_mprintf("%d", s0); |
if( zStat==0 ) rc = SQLITE_NOMEM; |
for(i=1; rc==SQLITE_OK && i<=nCol; i++){ |
zStat = idxAppendText(&rc, zStat, " %d", (s0+aStat[i]/2) / aStat[i]); |
} |
} |
|
if( rc==SQLITE_OK ){ |
sqlite3_bind_text(pWriteStat, 1, zTab, -1, SQLITE_STATIC); |
sqlite3_bind_text(pWriteStat, 2, zIdx, -1, SQLITE_STATIC); |
sqlite3_bind_text(pWriteStat, 3, zStat, -1, SQLITE_STATIC); |
sqlite3_step(pWriteStat); |
rc = sqlite3_reset(pWriteStat); |
} |
|
pEntry = idxHashFind(&p->hIdx, zIdx, STRLEN(zIdx)); |
if( pEntry ){ |
assert( pEntry->zVal2==0 ); |
pEntry->zVal2 = zStat; |
}else{ |
sqlite3_free(zStat); |
} |
} |
sqlite3_free(aStat); |
idxFinalize(&rc, pQuery); |
|
return rc; |
} |
|
static int idxBuildSampleTable(sqlite3expert *p, const char *zTab){ |
int rc; |
char *zSql; |
|
rc = sqlite3_exec(p->dbv,"DROP TABLE IF EXISTS temp."UNIQUE_TABLE_NAME,0,0,0); |
if( rc!=SQLITE_OK ) return rc; |
|
zSql = sqlite3_mprintf( |
"CREATE TABLE temp." UNIQUE_TABLE_NAME " AS SELECT * FROM %Q", zTab |
); |
if( zSql==0 ) return SQLITE_NOMEM; |
rc = sqlite3_exec(p->dbv, zSql, 0, 0, 0); |
sqlite3_free(zSql); |
|
return rc; |
} |
|
/* |
** This function is called as part of sqlite3_expert_analyze(). Candidate |
** indexes have already been created in database sqlite3expert.dbm, this |
** function populates sqlite_stat1 table in the same database. |
** |
** The stat1 data is generated by querying the |
*/ |
static int idxPopulateStat1(sqlite3expert *p, char **pzErr){ |
int rc = SQLITE_OK; |
int nMax =0; |
struct IdxRemCtx *pCtx = 0; |
struct IdxSampleCtx samplectx; |
int i; |
i64 iPrev = -100000; |
sqlite3_stmt *pAllIndex = 0; |
sqlite3_stmt *pIndexXInfo = 0; |
sqlite3_stmt *pWrite = 0; |
|
const char *zAllIndex = |
"SELECT s.rowid, s.name, l.name FROM " |
" sqlite_schema AS s, " |
" pragma_index_list(s.name) AS l " |
"WHERE s.type = 'table'"; |
const char *zIndexXInfo = |
"SELECT name, coll FROM pragma_index_xinfo(?) WHERE key"; |
const char *zWrite = "INSERT INTO sqlite_stat1 VALUES(?, ?, ?)"; |
|
/* If iSample==0, no sqlite_stat1 data is required. */ |
if( p->iSample==0 ) return SQLITE_OK; |
|
rc = idxLargestIndex(p->dbm, &nMax, pzErr); |
if( nMax<=0 || rc!=SQLITE_OK ) return rc; |
|
rc = sqlite3_exec(p->dbm, "ANALYZE; PRAGMA writable_schema=1", 0, 0, 0); |
|
if( rc==SQLITE_OK ){ |
int nByte = sizeof(struct IdxRemCtx) + (sizeof(struct IdxRemSlot) * nMax); |
pCtx = (struct IdxRemCtx*)idxMalloc(&rc, nByte); |
} |
|
if( rc==SQLITE_OK ){ |
sqlite3 *dbrem = (p->iSample==100 ? p->db : p->dbv); |
rc = sqlite3_create_function( |
dbrem, "rem", 2, SQLITE_UTF8, (void*)pCtx, idxRemFunc, 0, 0 |
); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_function( |
p->db, "sample", 0, SQLITE_UTF8, (void*)&samplectx, idxSampleFunc, 0, 0 |
); |
} |
|
if( rc==SQLITE_OK ){ |
pCtx->nSlot = nMax+1; |
rc = idxPrepareStmt(p->dbm, &pAllIndex, pzErr, zAllIndex); |
} |
if( rc==SQLITE_OK ){ |
rc = idxPrepareStmt(p->dbm, &pIndexXInfo, pzErr, zIndexXInfo); |
} |
if( rc==SQLITE_OK ){ |
rc = idxPrepareStmt(p->dbm, &pWrite, pzErr, zWrite); |
} |
|
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pAllIndex) ){ |
i64 iRowid = sqlite3_column_int64(pAllIndex, 0); |
const char *zTab = (const char*)sqlite3_column_text(pAllIndex, 1); |
const char *zIdx = (const char*)sqlite3_column_text(pAllIndex, 2); |
if( p->iSample<100 && iPrev!=iRowid ){ |
samplectx.target = (double)p->iSample / 100.0; |
samplectx.iTarget = p->iSample; |
samplectx.nRow = 0.0; |
samplectx.nRet = 0.0; |
rc = idxBuildSampleTable(p, zTab); |
if( rc!=SQLITE_OK ) break; |
} |
rc = idxPopulateOneStat1(p, pIndexXInfo, pWrite, zTab, zIdx, pzErr); |
iPrev = iRowid; |
} |
if( rc==SQLITE_OK && p->iSample<100 ){ |
rc = sqlite3_exec(p->dbv, |
"DROP TABLE IF EXISTS temp." UNIQUE_TABLE_NAME, 0,0,0 |
); |
} |
|
idxFinalize(&rc, pAllIndex); |
idxFinalize(&rc, pIndexXInfo); |
idxFinalize(&rc, pWrite); |
|
if( pCtx ){ |
for(i=0; i<pCtx->nSlot; i++){ |
sqlite3_free(pCtx->aSlot[i].z); |
} |
sqlite3_free(pCtx); |
} |
|
if( rc==SQLITE_OK ){ |
rc = sqlite3_exec(p->dbm, "ANALYZE sqlite_schema", 0, 0, 0); |
} |
|
sqlite3_exec(p->db, "DROP TABLE IF EXISTS temp."UNIQUE_TABLE_NAME,0,0,0); |
return rc; |
} |
|
/* |
** Allocate a new sqlite3expert object. |
*/ |
sqlite3expert *sqlite3_expert_new(sqlite3 *db, char **pzErrmsg){ |
int rc = SQLITE_OK; |
sqlite3expert *pNew; |
|
pNew = (sqlite3expert*)idxMalloc(&rc, sizeof(sqlite3expert)); |
|
/* Open two in-memory databases to work with. The "vtab database" (dbv) |
** will contain a virtual table corresponding to each real table in |
** the user database schema, and a copy of each view. It is used to |
** collect information regarding the WHERE, ORDER BY and other clauses |
** of the user's query. |
*/ |
if( rc==SQLITE_OK ){ |
pNew->db = db; |
pNew->iSample = 100; |
rc = sqlite3_open(":memory:", &pNew->dbv); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_open(":memory:", &pNew->dbm); |
if( rc==SQLITE_OK ){ |
sqlite3_db_config(pNew->dbm, SQLITE_DBCONFIG_TRIGGER_EQP, 1, (int*)0); |
} |
} |
|
|
/* Copy the entire schema of database [db] into [dbm]. */ |
if( rc==SQLITE_OK ){ |
sqlite3_stmt *pSql; |
rc = idxPrintfPrepareStmt(pNew->db, &pSql, pzErrmsg, |
"SELECT sql FROM sqlite_schema WHERE name NOT LIKE 'sqlite_%%'" |
" AND sql NOT LIKE 'CREATE VIRTUAL %%'" |
); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pSql) ){ |
const char *zSql = (const char*)sqlite3_column_text(pSql, 0); |
rc = sqlite3_exec(pNew->dbm, zSql, 0, 0, pzErrmsg); |
} |
idxFinalize(&rc, pSql); |
} |
|
/* Create the vtab schema */ |
if( rc==SQLITE_OK ){ |
rc = idxCreateVtabSchema(pNew, pzErrmsg); |
} |
|
/* Register the auth callback with dbv */ |
if( rc==SQLITE_OK ){ |
sqlite3_set_authorizer(pNew->dbv, idxAuthCallback, (void*)pNew); |
} |
|
/* If an error has occurred, free the new object and reutrn NULL. Otherwise, |
** return the new sqlite3expert handle. */ |
if( rc!=SQLITE_OK ){ |
sqlite3_expert_destroy(pNew); |
pNew = 0; |
} |
return pNew; |
} |
|
/* |
** Configure an sqlite3expert object. |
*/ |
int sqlite3_expert_config(sqlite3expert *p, int op, ...){ |
int rc = SQLITE_OK; |
va_list ap; |
va_start(ap, op); |
switch( op ){ |
case EXPERT_CONFIG_SAMPLE: { |
int iVal = va_arg(ap, int); |
if( iVal<0 ) iVal = 0; |
if( iVal>100 ) iVal = 100; |
p->iSample = iVal; |
break; |
} |
default: |
rc = SQLITE_NOTFOUND; |
break; |
} |
|
va_end(ap); |
return rc; |
} |
|
/* |
** Add an SQL statement to the analysis. |
*/ |
int sqlite3_expert_sql( |
sqlite3expert *p, /* From sqlite3_expert_new() */ |
const char *zSql, /* SQL statement to add */ |
char **pzErr /* OUT: Error message (if any) */ |
){ |
IdxScan *pScanOrig = p->pScan; |
IdxStatement *pStmtOrig = p->pStatement; |
int rc = SQLITE_OK; |
const char *zStmt = zSql; |
|
if( p->bRun ) return SQLITE_MISUSE; |
|
while( rc==SQLITE_OK && zStmt && zStmt[0] ){ |
sqlite3_stmt *pStmt = 0; |
rc = sqlite3_prepare_v2(p->dbv, zStmt, -1, &pStmt, &zStmt); |
if( rc==SQLITE_OK ){ |
if( pStmt ){ |
IdxStatement *pNew; |
const char *z = sqlite3_sql(pStmt); |
int n = STRLEN(z); |
pNew = (IdxStatement*)idxMalloc(&rc, sizeof(IdxStatement) + n+1); |
if( rc==SQLITE_OK ){ |
pNew->zSql = (char*)&pNew[1]; |
memcpy(pNew->zSql, z, n+1); |
pNew->pNext = p->pStatement; |
if( p->pStatement ) pNew->iId = p->pStatement->iId+1; |
p->pStatement = pNew; |
} |
sqlite3_finalize(pStmt); |
} |
}else{ |
idxDatabaseError(p->dbv, pzErr); |
} |
} |
|
if( rc!=SQLITE_OK ){ |
idxScanFree(p->pScan, pScanOrig); |
idxStatementFree(p->pStatement, pStmtOrig); |
p->pScan = pScanOrig; |
p->pStatement = pStmtOrig; |
} |
|
return rc; |
} |
|
int sqlite3_expert_analyze(sqlite3expert *p, char **pzErr){ |
int rc; |
IdxHashEntry *pEntry; |
|
/* Do trigger processing to collect any extra IdxScan structures */ |
rc = idxProcessTriggers(p, pzErr); |
|
/* Create candidate indexes within the in-memory database file */ |
if( rc==SQLITE_OK ){ |
rc = idxCreateCandidates(p); |
} |
|
/* Generate the stat1 data */ |
if( rc==SQLITE_OK ){ |
rc = idxPopulateStat1(p, pzErr); |
} |
|
/* Formulate the EXPERT_REPORT_CANDIDATES text */ |
for(pEntry=p->hIdx.pFirst; pEntry; pEntry=pEntry->pNext){ |
p->zCandidates = idxAppendText(&rc, p->zCandidates, |
"%s;%s%s\n", pEntry->zVal, |
pEntry->zVal2 ? " -- stat1: " : "", pEntry->zVal2 |
); |
} |
|
/* Figure out which of the candidate indexes are preferred by the query |
** planner and report the results to the user. */ |
if( rc==SQLITE_OK ){ |
rc = idxFindIndexes(p, pzErr); |
} |
|
if( rc==SQLITE_OK ){ |
p->bRun = 1; |
} |
return rc; |
} |
|
/* |
** Return the total number of statements that have been added to this |
** sqlite3expert using sqlite3_expert_sql(). |
*/ |
int sqlite3_expert_count(sqlite3expert *p){ |
int nRet = 0; |
if( p->pStatement ) nRet = p->pStatement->iId+1; |
return nRet; |
} |
|
/* |
** Return a component of the report. |
*/ |
const char *sqlite3_expert_report(sqlite3expert *p, int iStmt, int eReport){ |
const char *zRet = 0; |
IdxStatement *pStmt; |
|
if( p->bRun==0 ) return 0; |
for(pStmt=p->pStatement; pStmt && pStmt->iId!=iStmt; pStmt=pStmt->pNext); |
switch( eReport ){ |
case EXPERT_REPORT_SQL: |
if( pStmt ) zRet = pStmt->zSql; |
break; |
case EXPERT_REPORT_INDEXES: |
if( pStmt ) zRet = pStmt->zIdx; |
break; |
case EXPERT_REPORT_PLAN: |
if( pStmt ) zRet = pStmt->zEQP; |
break; |
case EXPERT_REPORT_CANDIDATES: |
zRet = p->zCandidates; |
break; |
} |
return zRet; |
} |
|
/* |
** Free an sqlite3expert object. |
*/ |
void sqlite3_expert_destroy(sqlite3expert *p){ |
if( p ){ |
sqlite3_close(p->dbm); |
sqlite3_close(p->dbv); |
idxScanFree(p->pScan, 0); |
idxStatementFree(p->pStatement, 0); |
idxTableFree(p->pTable); |
idxWriteFree(p->pWrite); |
idxHashClear(&p->hIdx); |
sqlite3_free(p->zCandidates); |
sqlite3_free(p); |
} |
} |
|
#endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */ |
|
/************************* End ../ext/expert/sqlite3expert.c ********************/ |
|
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_ENABLE_DBPAGE_VTAB) |
/************************* Begin ../ext/misc/dbdata.c ******************/ |
/* |
** 2019-04-17 |
** |
** The author disclaims copyright to this source code. In place of |
** a legal notice, here is a blessing: |
** |
** May you do good and not evil. |
** May you find forgiveness for yourself and forgive others. |
** May you share freely, never taking more than you give. |
** |
****************************************************************************** |
** |
** This file contains an implementation of two eponymous virtual tables, |
** "sqlite_dbdata" and "sqlite_dbptr". Both modules require that the |
** "sqlite_dbpage" eponymous virtual table be available. |
** |
** SQLITE_DBDATA: |
** sqlite_dbdata is used to extract data directly from a database b-tree |
** page and its associated overflow pages, bypassing the b-tree layer. |
** The table schema is equivalent to: |
** |
** CREATE TABLE sqlite_dbdata( |
** pgno INTEGER, |
** cell INTEGER, |
** field INTEGER, |
** value ANY, |
** schema TEXT HIDDEN |
** ); |
** |
** IMPORTANT: THE VIRTUAL TABLE SCHEMA ABOVE IS SUBJECT TO CHANGE. IN THE |
** FUTURE NEW NON-HIDDEN COLUMNS MAY BE ADDED BETWEEN "value" AND |
** "schema". |
** |
** Each page of the database is inspected. If it cannot be interpreted as |
** a b-tree page, or if it is a b-tree page containing 0 entries, the |
** sqlite_dbdata table contains no rows for that page. Otherwise, the |
** table contains one row for each field in the record associated with |
** each cell on the page. For intkey b-trees, the key value is stored in |
** field -1. |
** |
** For example, for the database: |
** |
** CREATE TABLE t1(a, b); -- root page is page 2 |
** INSERT INTO t1(rowid, a, b) VALUES(5, 'v', 'five'); |
** INSERT INTO t1(rowid, a, b) VALUES(10, 'x', 'ten'); |
** |
** the sqlite_dbdata table contains, as well as from entries related to |
** page 1, content equivalent to: |
** |
** INSERT INTO sqlite_dbdata(pgno, cell, field, value) VALUES |
** (2, 0, -1, 5 ), |
** (2, 0, 0, 'v' ), |
** (2, 0, 1, 'five'), |
** (2, 1, -1, 10 ), |
** (2, 1, 0, 'x' ), |
** (2, 1, 1, 'ten' ); |
** |
** If database corruption is encountered, this module does not report an |
** error. Instead, it attempts to extract as much data as possible and |
** ignores the corruption. |
** |
** SQLITE_DBPTR: |
** The sqlite_dbptr table has the following schema: |
** |
** CREATE TABLE sqlite_dbptr( |
** pgno INTEGER, |
** child INTEGER, |
** schema TEXT HIDDEN |
** ); |
** |
** It contains one entry for each b-tree pointer between a parent and |
** child page in the database. |
*/ |
#if !defined(SQLITEINT_H) |
/* #include "sqlite3ext.h" */ |
|
/* typedef unsigned char u8; */ |
|
#endif |
SQLITE_EXTENSION_INIT1 |
#include <string.h> |
#include <assert.h> |
|
#define DBDATA_PADDING_BYTES 100 |
|
typedef struct DbdataTable DbdataTable; |
typedef struct DbdataCursor DbdataCursor; |
|
/* Cursor object */ |
struct DbdataCursor { |
sqlite3_vtab_cursor base; /* Base class. Must be first */ |
sqlite3_stmt *pStmt; /* For fetching database pages */ |
|
int iPgno; /* Current page number */ |
u8 *aPage; /* Buffer containing page */ |
int nPage; /* Size of aPage[] in bytes */ |
int nCell; /* Number of cells on aPage[] */ |
int iCell; /* Current cell number */ |
int bOnePage; /* True to stop after one page */ |
int szDb; |
sqlite3_int64 iRowid; |
|
/* Only for the sqlite_dbdata table */ |
u8 *pRec; /* Buffer containing current record */ |
int nRec; /* Size of pRec[] in bytes */ |
int nHdr; /* Size of header in bytes */ |
int iField; /* Current field number */ |
u8 *pHdrPtr; |
u8 *pPtr; |
|
sqlite3_int64 iIntkey; /* Integer key value */ |
}; |
|
/* Table object */ |
struct DbdataTable { |
sqlite3_vtab base; /* Base class. Must be first */ |
sqlite3 *db; /* The database connection */ |
sqlite3_stmt *pStmt; /* For fetching database pages */ |
int bPtr; /* True for sqlite3_dbptr table */ |
}; |
|
/* Column and schema definitions for sqlite_dbdata */ |
#define DBDATA_COLUMN_PGNO 0 |
#define DBDATA_COLUMN_CELL 1 |
#define DBDATA_COLUMN_FIELD 2 |
#define DBDATA_COLUMN_VALUE 3 |
#define DBDATA_COLUMN_SCHEMA 4 |
#define DBDATA_SCHEMA \ |
"CREATE TABLE x(" \ |
" pgno INTEGER," \ |
" cell INTEGER," \ |
" field INTEGER," \ |
" value ANY," \ |
" schema TEXT HIDDEN" \ |
")" |
|
/* Column and schema definitions for sqlite_dbptr */ |
#define DBPTR_COLUMN_PGNO 0 |
#define DBPTR_COLUMN_CHILD 1 |
#define DBPTR_COLUMN_SCHEMA 2 |
#define DBPTR_SCHEMA \ |
"CREATE TABLE x(" \ |
" pgno INTEGER," \ |
" child INTEGER," \ |
" schema TEXT HIDDEN" \ |
")" |
|
/* |
** Connect to an sqlite_dbdata (pAux==0) or sqlite_dbptr (pAux!=0) virtual |
** table. |
*/ |
static int dbdataConnect( |
sqlite3 *db, |
void *pAux, |
int argc, const char *const*argv, |
sqlite3_vtab **ppVtab, |
char **pzErr |
){ |
DbdataTable *pTab = 0; |
int rc = sqlite3_declare_vtab(db, pAux ? DBPTR_SCHEMA : DBDATA_SCHEMA); |
|
if( rc==SQLITE_OK ){ |
pTab = (DbdataTable*)sqlite3_malloc64(sizeof(DbdataTable)); |
if( pTab==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
memset(pTab, 0, sizeof(DbdataTable)); |
pTab->db = db; |
pTab->bPtr = (pAux!=0); |
} |
} |
|
*ppVtab = (sqlite3_vtab*)pTab; |
return rc; |
} |
|
/* |
** Disconnect from or destroy a sqlite_dbdata or sqlite_dbptr virtual table. |
*/ |
static int dbdataDisconnect(sqlite3_vtab *pVtab){ |
DbdataTable *pTab = (DbdataTable*)pVtab; |
if( pTab ){ |
sqlite3_finalize(pTab->pStmt); |
sqlite3_free(pVtab); |
} |
return SQLITE_OK; |
} |
|
/* |
** This function interprets two types of constraints: |
** |
** schema=? |
** pgno=? |
** |
** If neither are present, idxNum is set to 0. If schema=? is present, |
** the 0x01 bit in idxNum is set. If pgno=? is present, the 0x02 bit |
** in idxNum is set. |
** |
** If both parameters are present, schema is in position 0 and pgno in |
** position 1. |
*/ |
static int dbdataBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdx){ |
DbdataTable *pTab = (DbdataTable*)tab; |
int i; |
int iSchema = -1; |
int iPgno = -1; |
int colSchema = (pTab->bPtr ? DBPTR_COLUMN_SCHEMA : DBDATA_COLUMN_SCHEMA); |
|
for(i=0; i<pIdx->nConstraint; i++){ |
struct sqlite3_index_constraint *p = &pIdx->aConstraint[i]; |
if( p->op==SQLITE_INDEX_CONSTRAINT_EQ ){ |
if( p->iColumn==colSchema ){ |
if( p->usable==0 ) return SQLITE_CONSTRAINT; |
iSchema = i; |
} |
if( p->iColumn==DBDATA_COLUMN_PGNO && p->usable ){ |
iPgno = i; |
} |
} |
} |
|
if( iSchema>=0 ){ |
pIdx->aConstraintUsage[iSchema].argvIndex = 1; |
pIdx->aConstraintUsage[iSchema].omit = 1; |
} |
if( iPgno>=0 ){ |
pIdx->aConstraintUsage[iPgno].argvIndex = 1 + (iSchema>=0); |
pIdx->aConstraintUsage[iPgno].omit = 1; |
pIdx->estimatedCost = 100; |
pIdx->estimatedRows = 50; |
|
if( pTab->bPtr==0 && pIdx->nOrderBy && pIdx->aOrderBy[0].desc==0 ){ |
int iCol = pIdx->aOrderBy[0].iColumn; |
if( pIdx->nOrderBy==1 ){ |
pIdx->orderByConsumed = (iCol==0 || iCol==1); |
}else if( pIdx->nOrderBy==2 && pIdx->aOrderBy[1].desc==0 && iCol==0 ){ |
pIdx->orderByConsumed = (pIdx->aOrderBy[1].iColumn==1); |
} |
} |
|
}else{ |
pIdx->estimatedCost = 100000000; |
pIdx->estimatedRows = 1000000000; |
} |
pIdx->idxNum = (iSchema>=0 ? 0x01 : 0x00) | (iPgno>=0 ? 0x02 : 0x00); |
return SQLITE_OK; |
} |
|
/* |
** Open a new sqlite_dbdata or sqlite_dbptr cursor. |
*/ |
static int dbdataOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ |
DbdataCursor *pCsr; |
|
pCsr = (DbdataCursor*)sqlite3_malloc64(sizeof(DbdataCursor)); |
if( pCsr==0 ){ |
return SQLITE_NOMEM; |
}else{ |
memset(pCsr, 0, sizeof(DbdataCursor)); |
pCsr->base.pVtab = pVTab; |
} |
|
*ppCursor = (sqlite3_vtab_cursor *)pCsr; |
return SQLITE_OK; |
} |
|
/* |
** Restore a cursor object to the state it was in when first allocated |
** by dbdataOpen(). |
*/ |
static void dbdataResetCursor(DbdataCursor *pCsr){ |
DbdataTable *pTab = (DbdataTable*)(pCsr->base.pVtab); |
if( pTab->pStmt==0 ){ |
pTab->pStmt = pCsr->pStmt; |
}else{ |
sqlite3_finalize(pCsr->pStmt); |
} |
pCsr->pStmt = 0; |
pCsr->iPgno = 1; |
pCsr->iCell = 0; |
pCsr->iField = 0; |
pCsr->bOnePage = 0; |
sqlite3_free(pCsr->aPage); |
sqlite3_free(pCsr->pRec); |
pCsr->pRec = 0; |
pCsr->aPage = 0; |
} |
|
/* |
** Close an sqlite_dbdata or sqlite_dbptr cursor. |
*/ |
static int dbdataClose(sqlite3_vtab_cursor *pCursor){ |
DbdataCursor *pCsr = (DbdataCursor*)pCursor; |
dbdataResetCursor(pCsr); |
sqlite3_free(pCsr); |
return SQLITE_OK; |
} |
|
/* |
** Utility methods to decode 16 and 32-bit big-endian unsigned integers. |
*/ |
static unsigned int get_uint16(unsigned char *a){ |
return (a[0]<<8)|a[1]; |
} |
static unsigned int get_uint32(unsigned char *a){ |
return ((unsigned int)a[0]<<24) |
| ((unsigned int)a[1]<<16) |
| ((unsigned int)a[2]<<8) |
| ((unsigned int)a[3]); |
} |
|
/* |
** Load page pgno from the database via the sqlite_dbpage virtual table. |
** If successful, set (*ppPage) to point to a buffer containing the page |
** data, (*pnPage) to the size of that buffer in bytes and return |
** SQLITE_OK. In this case it is the responsibility of the caller to |
** eventually free the buffer using sqlite3_free(). |
** |
** Or, if an error occurs, set both (*ppPage) and (*pnPage) to 0 and |
** return an SQLite error code. |
*/ |
static int dbdataLoadPage( |
DbdataCursor *pCsr, /* Cursor object */ |
unsigned int pgno, /* Page number of page to load */ |
u8 **ppPage, /* OUT: pointer to page buffer */ |
int *pnPage /* OUT: Size of (*ppPage) in bytes */ |
){ |
int rc2; |
int rc = SQLITE_OK; |
sqlite3_stmt *pStmt = pCsr->pStmt; |
|
*ppPage = 0; |
*pnPage = 0; |
sqlite3_bind_int64(pStmt, 2, pgno); |
if( SQLITE_ROW==sqlite3_step(pStmt) ){ |
int nCopy = sqlite3_column_bytes(pStmt, 0); |
if( nCopy>0 ){ |
u8 *pPage; |
pPage = (u8*)sqlite3_malloc64(nCopy + DBDATA_PADDING_BYTES); |
if( pPage==0 ){ |
rc = SQLITE_NOMEM; |
}else{ |
const u8 *pCopy = sqlite3_column_blob(pStmt, 0); |
memcpy(pPage, pCopy, nCopy); |
memset(&pPage[nCopy], 0, DBDATA_PADDING_BYTES); |
} |
*ppPage = pPage; |
*pnPage = nCopy; |
} |
} |
rc2 = sqlite3_reset(pStmt); |
if( rc==SQLITE_OK ) rc = rc2; |
|
return rc; |
} |
|
/* |
** Read a varint. Put the value in *pVal and return the number of bytes. |
*/ |
static int dbdataGetVarint(const u8 *z, sqlite3_int64 *pVal){ |
sqlite3_int64 v = 0; |
int i; |
for(i=0; i<8; i++){ |
v = (v<<7) + (z[i]&0x7f); |
if( (z[i]&0x80)==0 ){ *pVal = v; return i+1; } |
} |
v = (v<<8) + (z[i]&0xff); |
*pVal = v; |
return 9; |
} |
|
/* |
** Return the number of bytes of space used by an SQLite value of type |
** eType. |
*/ |
static int dbdataValueBytes(int eType){ |
switch( eType ){ |
case 0: case 8: case 9: |
case 10: case 11: |
return 0; |
case 1: |
return 1; |
case 2: |
return 2; |
case 3: |
return 3; |
case 4: |
return 4; |
case 5: |
return 6; |
case 6: |
case 7: |
return 8; |
default: |
if( eType>0 ){ |
return ((eType-12) / 2); |
} |
return 0; |
} |
} |
|
/* |
** Load a value of type eType from buffer pData and use it to set the |
** result of context object pCtx. |
*/ |
static void dbdataValue( |
sqlite3_context *pCtx, |
int eType, |
u8 *pData, |
int nData |
){ |
if( eType>=0 && dbdataValueBytes(eType)<=nData ){ |
switch( eType ){ |
case 0: |
case 10: |
case 11: |
sqlite3_result_null(pCtx); |
break; |
|
case 8: |
sqlite3_result_int(pCtx, 0); |
break; |
case 9: |
sqlite3_result_int(pCtx, 1); |
break; |
|
case 1: case 2: case 3: case 4: case 5: case 6: case 7: { |
sqlite3_uint64 v = (signed char)pData[0]; |
pData++; |
switch( eType ){ |
case 7: |
case 6: v = (v<<16) + (pData[0]<<8) + pData[1]; pData += 2; |
case 5: v = (v<<16) + (pData[0]<<8) + pData[1]; pData += 2; |
case 4: v = (v<<8) + pData[0]; pData++; |
case 3: v = (v<<8) + pData[0]; pData++; |
case 2: v = (v<<8) + pData[0]; pData++; |
} |
|
if( eType==7 ){ |
double r; |
memcpy(&r, &v, sizeof(r)); |
sqlite3_result_double(pCtx, r); |
}else{ |
sqlite3_result_int64(pCtx, (sqlite3_int64)v); |
} |
break; |
} |
|
default: { |
int n = ((eType-12) / 2); |
if( eType % 2 ){ |
sqlite3_result_text(pCtx, (const char*)pData, n, SQLITE_TRANSIENT); |
}else{ |
sqlite3_result_blob(pCtx, pData, n, SQLITE_TRANSIENT); |
} |
} |
} |
} |
} |
|
/* |
** Move an sqlite_dbdata or sqlite_dbptr cursor to the next entry. |
*/ |
static int dbdataNext(sqlite3_vtab_cursor *pCursor){ |
DbdataCursor *pCsr = (DbdataCursor*)pCursor; |
DbdataTable *pTab = (DbdataTable*)pCursor->pVtab; |
|
pCsr->iRowid++; |
while( 1 ){ |
int rc; |
int iOff = (pCsr->iPgno==1 ? 100 : 0); |
int bNextPage = 0; |
|
if( pCsr->aPage==0 ){ |
while( 1 ){ |
if( pCsr->bOnePage==0 && pCsr->iPgno>pCsr->szDb ) return SQLITE_OK; |
rc = dbdataLoadPage(pCsr, pCsr->iPgno, &pCsr->aPage, &pCsr->nPage); |
if( rc!=SQLITE_OK ) return rc; |
if( pCsr->aPage ) break; |
pCsr->iPgno++; |
} |
pCsr->iCell = pTab->bPtr ? -2 : 0; |
pCsr->nCell = get_uint16(&pCsr->aPage[iOff+3]); |
} |
|
if( pTab->bPtr ){ |
if( pCsr->aPage[iOff]!=0x02 && pCsr->aPage[iOff]!=0x05 ){ |
pCsr->iCell = pCsr->nCell; |
} |
pCsr->iCell++; |
if( pCsr->iCell>=pCsr->nCell ){ |
sqlite3_free(pCsr->aPage); |
pCsr->aPage = 0; |
if( pCsr->bOnePage ) return SQLITE_OK; |
pCsr->iPgno++; |
}else{ |
return SQLITE_OK; |
} |
}else{ |
/* If there is no record loaded, load it now. */ |
if( pCsr->pRec==0 ){ |
int bHasRowid = 0; |
int nPointer = 0; |
sqlite3_int64 nPayload = 0; |
sqlite3_int64 nHdr = 0; |
int iHdr; |
int U, X; |
int nLocal; |
|
switch( pCsr->aPage[iOff] ){ |
case 0x02: |
nPointer = 4; |
break; |
case 0x0a: |
break; |
case 0x0d: |
bHasRowid = 1; |
break; |
default: |
/* This is not a b-tree page with records on it. Continue. */ |
pCsr->iCell = pCsr->nCell; |
break; |
} |
|
if( pCsr->iCell>=pCsr->nCell ){ |
bNextPage = 1; |
}else{ |
|
iOff += 8 + nPointer + pCsr->iCell*2; |
if( iOff>pCsr->nPage ){ |
bNextPage = 1; |
}else{ |
iOff = get_uint16(&pCsr->aPage[iOff]); |
} |
|
/* For an interior node cell, skip past the child-page number */ |
iOff += nPointer; |
|
/* Load the "byte of payload including overflow" field */ |
if( bNextPage || iOff>pCsr->nPage ){ |
bNextPage = 1; |
}else{ |
iOff += dbdataGetVarint(&pCsr->aPage[iOff], &nPayload); |
} |
|
/* If this is a leaf intkey cell, load the rowid */ |
if( bHasRowid && !bNextPage && iOff<pCsr->nPage ){ |
iOff += dbdataGetVarint(&pCsr->aPage[iOff], &pCsr->iIntkey); |
} |
|
/* Figure out how much data to read from the local page */ |
U = pCsr->nPage; |
if( bHasRowid ){ |
X = U-35; |
}else{ |
X = ((U-12)*64/255)-23; |
} |
if( nPayload<=X ){ |
nLocal = nPayload; |
}else{ |
int M, K; |
M = ((U-12)*32/255)-23; |
K = M+((nPayload-M)%(U-4)); |
if( K<=X ){ |
nLocal = K; |
}else{ |
nLocal = M; |
} |
} |
|
if( bNextPage || nLocal+iOff>pCsr->nPage ){ |
bNextPage = 1; |
}else{ |
|
/* Allocate space for payload. And a bit more to catch small buffer |
** overruns caused by attempting to read a varint or similar from |
** near the end of a corrupt record. */ |
pCsr->pRec = (u8*)sqlite3_malloc64(nPayload+DBDATA_PADDING_BYTES); |
if( pCsr->pRec==0 ) return SQLITE_NOMEM; |
memset(pCsr->pRec, 0, nPayload+DBDATA_PADDING_BYTES); |
pCsr->nRec = nPayload; |
|
/* Load the nLocal bytes of payload */ |
memcpy(pCsr->pRec, &pCsr->aPage[iOff], nLocal); |
iOff += nLocal; |
|
/* Load content from overflow pages */ |
if( nPayload>nLocal ){ |
sqlite3_int64 nRem = nPayload - nLocal; |
unsigned int pgnoOvfl = get_uint32(&pCsr->aPage[iOff]); |
while( nRem>0 ){ |
u8 *aOvfl = 0; |
int nOvfl = 0; |
int nCopy; |
rc = dbdataLoadPage(pCsr, pgnoOvfl, &aOvfl, &nOvfl); |
assert( rc!=SQLITE_OK || aOvfl==0 || nOvfl==pCsr->nPage ); |
if( rc!=SQLITE_OK ) return rc; |
if( aOvfl==0 ) break; |
|
nCopy = U-4; |
if( nCopy>nRem ) nCopy = nRem; |
memcpy(&pCsr->pRec[nPayload-nRem], &aOvfl[4], nCopy); |
nRem -= nCopy; |
|
pgnoOvfl = get_uint32(aOvfl); |
sqlite3_free(aOvfl); |
} |
} |
|
iHdr = dbdataGetVarint(pCsr->pRec, &nHdr); |
pCsr->nHdr = nHdr; |
pCsr->pHdrPtr = &pCsr->pRec[iHdr]; |
pCsr->pPtr = &pCsr->pRec[pCsr->nHdr]; |
pCsr->iField = (bHasRowid ? -1 : 0); |
} |
} |
}else{ |
pCsr->iField++; |
if( pCsr->iField>0 ){ |
sqlite3_int64 iType; |
if( pCsr->pHdrPtr>&pCsr->pRec[pCsr->nRec] ){ |
bNextPage = 1; |
}else{ |
pCsr->pHdrPtr += dbdataGetVarint(pCsr->pHdrPtr, &iType); |
pCsr->pPtr += dbdataValueBytes(iType); |
} |
} |
} |
|
if( bNextPage ){ |
sqlite3_free(pCsr->aPage); |
sqlite3_free(pCsr->pRec); |
pCsr->aPage = 0; |
pCsr->pRec = 0; |
if( pCsr->bOnePage ) return SQLITE_OK; |
pCsr->iPgno++; |
}else{ |
if( pCsr->iField<0 || pCsr->pHdrPtr<&pCsr->pRec[pCsr->nHdr] ){ |
return SQLITE_OK; |
} |
|
/* Advance to the next cell. The next iteration of the loop will load |
** the record and so on. */ |
sqlite3_free(pCsr->pRec); |
pCsr->pRec = 0; |
pCsr->iCell++; |
} |
} |
} |
|
assert( !"can't get here" ); |
return SQLITE_OK; |
} |
|
/* |
** Return true if the cursor is at EOF. |
*/ |
static int dbdataEof(sqlite3_vtab_cursor *pCursor){ |
DbdataCursor *pCsr = (DbdataCursor*)pCursor; |
return pCsr->aPage==0; |
} |
|
/* |
** Determine the size in pages of database zSchema (where zSchema is |
** "main", "temp" or the name of an attached database) and set |
** pCsr->szDb accordingly. If successful, return SQLITE_OK. Otherwise, |
** an SQLite error code. |
*/ |
static int dbdataDbsize(DbdataCursor *pCsr, const char *zSchema){ |
DbdataTable *pTab = (DbdataTable*)pCsr->base.pVtab; |
char *zSql = 0; |
int rc, rc2; |
sqlite3_stmt *pStmt = 0; |
|
zSql = sqlite3_mprintf("PRAGMA %Q.page_count", zSchema); |
if( zSql==0 ) return SQLITE_NOMEM; |
rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
if( rc==SQLITE_OK && sqlite3_step(pStmt)==SQLITE_ROW ){ |
pCsr->szDb = sqlite3_column_int(pStmt, 0); |
} |
rc2 = sqlite3_finalize(pStmt); |
if( rc==SQLITE_OK ) rc = rc2; |
return rc; |
} |
|
/* |
** xFilter method for sqlite_dbdata and sqlite_dbptr. |
*/ |
static int dbdataFilter( |
sqlite3_vtab_cursor *pCursor, |
int idxNum, const char *idxStr, |
int argc, sqlite3_value **argv |
){ |
DbdataCursor *pCsr = (DbdataCursor*)pCursor; |
DbdataTable *pTab = (DbdataTable*)pCursor->pVtab; |
int rc = SQLITE_OK; |
const char *zSchema = "main"; |
|
dbdataResetCursor(pCsr); |
assert( pCsr->iPgno==1 ); |
if( idxNum & 0x01 ){ |
zSchema = (const char*)sqlite3_value_text(argv[0]); |
} |
if( idxNum & 0x02 ){ |
pCsr->iPgno = sqlite3_value_int(argv[(idxNum & 0x01)]); |
pCsr->bOnePage = 1; |
}else{ |
pCsr->nPage = dbdataDbsize(pCsr, zSchema); |
rc = dbdataDbsize(pCsr, zSchema); |
} |
|
if( rc==SQLITE_OK ){ |
if( pTab->pStmt ){ |
pCsr->pStmt = pTab->pStmt; |
pTab->pStmt = 0; |
}else{ |
rc = sqlite3_prepare_v2(pTab->db, |
"SELECT data FROM sqlite_dbpage(?) WHERE pgno=?", -1, |
&pCsr->pStmt, 0 |
); |
} |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_bind_text(pCsr->pStmt, 1, zSchema, -1, SQLITE_TRANSIENT); |
}else{ |
pTab->base.zErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pTab->db)); |
} |
if( rc==SQLITE_OK ){ |
rc = dbdataNext(pCursor); |
} |
return rc; |
} |
|
/* |
** Return a column for the sqlite_dbdata or sqlite_dbptr table. |
*/ |
static int dbdataColumn( |
sqlite3_vtab_cursor *pCursor, |
sqlite3_context *ctx, |
int i |
){ |
DbdataCursor *pCsr = (DbdataCursor*)pCursor; |
DbdataTable *pTab = (DbdataTable*)pCursor->pVtab; |
if( pTab->bPtr ){ |
switch( i ){ |
case DBPTR_COLUMN_PGNO: |
sqlite3_result_int64(ctx, pCsr->iPgno); |
break; |
case DBPTR_COLUMN_CHILD: { |
int iOff = pCsr->iPgno==1 ? 100 : 0; |
if( pCsr->iCell<0 ){ |
iOff += 8; |
}else{ |
iOff += 12 + pCsr->iCell*2; |
if( iOff>pCsr->nPage ) return SQLITE_OK; |
iOff = get_uint16(&pCsr->aPage[iOff]); |
} |
if( iOff<=pCsr->nPage ){ |
sqlite3_result_int64(ctx, get_uint32(&pCsr->aPage[iOff])); |
} |
break; |
} |
} |
}else{ |
switch( i ){ |
case DBDATA_COLUMN_PGNO: |
sqlite3_result_int64(ctx, pCsr->iPgno); |
break; |
case DBDATA_COLUMN_CELL: |
sqlite3_result_int(ctx, pCsr->iCell); |
break; |
case DBDATA_COLUMN_FIELD: |
sqlite3_result_int(ctx, pCsr->iField); |
break; |
case DBDATA_COLUMN_VALUE: { |
if( pCsr->iField<0 ){ |
sqlite3_result_int64(ctx, pCsr->iIntkey); |
}else{ |
sqlite3_int64 iType; |
dbdataGetVarint(pCsr->pHdrPtr, &iType); |
dbdataValue( |
ctx, iType, pCsr->pPtr, &pCsr->pRec[pCsr->nRec] - pCsr->pPtr |
); |
} |
break; |
} |
} |
} |
return SQLITE_OK; |
} |
|
/* |
** Return the rowid for an sqlite_dbdata or sqlite_dptr table. |
*/ |
static int dbdataRowid(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ |
DbdataCursor *pCsr = (DbdataCursor*)pCursor; |
*pRowid = pCsr->iRowid; |
return SQLITE_OK; |
} |
|
|
/* |
** Invoke this routine to register the "sqlite_dbdata" virtual table module |
*/ |
static int sqlite3DbdataRegister(sqlite3 *db){ |
static sqlite3_module dbdata_module = { |
0, /* iVersion */ |
0, /* xCreate */ |
dbdataConnect, /* xConnect */ |
dbdataBestIndex, /* xBestIndex */ |
dbdataDisconnect, /* xDisconnect */ |
0, /* xDestroy */ |
dbdataOpen, /* xOpen - open a cursor */ |
dbdataClose, /* xClose - close a cursor */ |
dbdataFilter, /* xFilter - configure scan constraints */ |
dbdataNext, /* xNext - advance a cursor */ |
dbdataEof, /* xEof - check for end of scan */ |
dbdataColumn, /* xColumn - read data */ |
dbdataRowid, /* xRowid - read data */ |
0, /* xUpdate */ |
0, /* xBegin */ |
0, /* xSync */ |
0, /* xCommit */ |
0, /* xRollback */ |
0, /* xFindMethod */ |
0, /* xRename */ |
0, /* xSavepoint */ |
0, /* xRelease */ |
0, /* xRollbackTo */ |
0 /* xShadowName */ |
}; |
|
int rc = sqlite3_create_module(db, "sqlite_dbdata", &dbdata_module, 0); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_create_module(db, "sqlite_dbptr", &dbdata_module, (void*)1); |
} |
return rc; |
} |
|
#ifdef _WIN32 |
|
#endif |
int sqlite3_dbdata_init( |
sqlite3 *db, |
char **pzErrMsg, |
const sqlite3_api_routines *pApi |
){ |
SQLITE_EXTENSION_INIT2(pApi); |
return sqlite3DbdataRegister(db); |
} |
|
/************************* End ../ext/misc/dbdata.c ********************/ |
#endif |
|
#if defined(SQLITE_ENABLE_SESSION) |
/* |
** State information for a single open session |
*/ |
typedef struct OpenSession OpenSession; |
struct OpenSession { |
char *zName; /* Symbolic name for this session */ |
int nFilter; /* Number of xFilter rejection GLOB patterns */ |
char **azFilter; /* Array of xFilter rejection GLOB patterns */ |
sqlite3_session *p; /* The open session */ |
}; |
#endif |
|
typedef struct ExpertInfo ExpertInfo; |
struct ExpertInfo { |
sqlite3expert *pExpert; |
int bVerbose; |
}; |
|
/* A single line in the EQP output */ |
typedef struct EQPGraphRow EQPGraphRow; |
struct EQPGraphRow { |
int iEqpId; /* ID for this row */ |
int iParentId; /* ID of the parent row */ |
EQPGraphRow *pNext; /* Next row in sequence */ |
char zText[1]; /* Text to display for this row */ |
}; |
|
/* All EQP output is collected into an instance of the following */ |
typedef struct EQPGraph EQPGraph; |
struct EQPGraph { |
EQPGraphRow *pRow; /* Linked list of all rows of the EQP output */ |
EQPGraphRow *pLast; /* Last element of the pRow list */ |
char zPrefix[100]; /* Graph prefix */ |
}; |
|
/* |
** State information about the database connection is contained in an |
** instance of the following structure. |
*/ |
typedef struct ShellState ShellState; |
struct ShellState { |
sqlite3 *db; /* The database */ |
u8 autoExplain; /* Automatically turn on .explain mode */ |
u8 autoEQP; /* Run EXPLAIN QUERY PLAN prior to seach SQL stmt */ |
u8 autoEQPtest; /* autoEQP is in test mode */ |
u8 autoEQPtrace; /* autoEQP is in trace mode */ |
u8 scanstatsOn; /* True to display scan stats before each finalize */ |
u8 openMode; /* SHELL_OPEN_NORMAL, _APPENDVFS, or _ZIPFILE */ |
u8 doXdgOpen; /* Invoke start/open/xdg-open in output_reset() */ |
u8 nEqpLevel; /* Depth of the EQP output graph */ |
u8 eTraceType; /* SHELL_TRACE_* value for type of trace */ |
unsigned statsOn; /* True to display memory stats before each finalize */ |
unsigned mEqpLines; /* Mask of veritical lines in the EQP output graph */ |
int outCount; /* Revert to stdout when reaching zero */ |
int cnt; /* Number of records displayed so far */ |
int lineno; /* Line number of last line read from in */ |
int openFlags; /* Additional flags to open. (SQLITE_OPEN_NOFOLLOW) */ |
FILE *in; /* Read commands from this stream */ |
FILE *out; /* Write results here */ |
FILE *traceOut; /* Output for sqlite3_trace() */ |
int nErr; /* Number of errors seen */ |
int mode; /* An output mode setting */ |
int modePrior; /* Saved mode */ |
int cMode; /* temporary output mode for the current query */ |
int normalMode; /* Output mode before ".explain on" */ |
int writableSchema; /* True if PRAGMA writable_schema=ON */ |
int showHeader; /* True to show column names in List or Column mode */ |
int nCheck; /* Number of ".check" commands run */ |
unsigned nProgress; /* Number of progress callbacks encountered */ |
unsigned mxProgress; /* Maximum progress callbacks before failing */ |
unsigned flgProgress; /* Flags for the progress callback */ |
unsigned shellFlgs; /* Various flags */ |
unsigned priorShFlgs; /* Saved copy of flags */ |
sqlite3_int64 szMax; /* --maxsize argument to .open */ |
char *zDestTable; /* Name of destination table when MODE_Insert */ |
char *zTempFile; /* Temporary file that might need deleting */ |
char zTestcase[30]; /* Name of current test case */ |
char colSeparator[20]; /* Column separator character for several modes */ |
char rowSeparator[20]; /* Row separator character for MODE_Ascii */ |
char colSepPrior[20]; /* Saved column separator */ |
char rowSepPrior[20]; /* Saved row separator */ |
int *colWidth; /* Requested width of each column in columnar modes */ |
int *actualWidth; /* Actual width of each column */ |
int nWidth; /* Number of slots in colWidth[] and actualWidth[] */ |
char nullValue[20]; /* The text to print when a NULL comes back from |
** the database */ |
char outfile[FILENAME_MAX]; /* Filename for *out */ |
const char *zDbFilename; /* name of the database file */ |
char *zFreeOnClose; /* Filename to free when closing */ |
const char *zVfs; /* Name of VFS to use */ |
sqlite3_stmt *pStmt; /* Current statement if any. */ |
FILE *pLog; /* Write log output here */ |
int *aiIndent; /* Array of indents used in MODE_Explain */ |
int nIndent; /* Size of array aiIndent[] */ |
int iIndent; /* Index of current op in aiIndent[] */ |
EQPGraph sGraph; /* Information for the graphical EXPLAIN QUERY PLAN */ |
#if defined(SQLITE_ENABLE_SESSION) |
int nSession; /* Number of active sessions */ |
OpenSession aSession[4]; /* Array of sessions. [0] is in focus. */ |
#endif |
ExpertInfo expert; /* Valid if previous command was ".expert OPT..." */ |
}; |
|
|
/* Allowed values for ShellState.autoEQP |
*/ |
#define AUTOEQP_off 0 /* Automatic EXPLAIN QUERY PLAN is off */ |
#define AUTOEQP_on 1 /* Automatic EQP is on */ |
#define AUTOEQP_trigger 2 /* On and also show plans for triggers */ |
#define AUTOEQP_full 3 /* Show full EXPLAIN */ |
|
/* Allowed values for ShellState.openMode |
*/ |
#define SHELL_OPEN_UNSPEC 0 /* No open-mode specified */ |
#define SHELL_OPEN_NORMAL 1 /* Normal database file */ |
#define SHELL_OPEN_APPENDVFS 2 /* Use appendvfs */ |
#define SHELL_OPEN_ZIPFILE 3 /* Use the zipfile virtual table */ |
#define SHELL_OPEN_READONLY 4 /* Open a normal database read-only */ |
#define SHELL_OPEN_DESERIALIZE 5 /* Open using sqlite3_deserialize() */ |
#define SHELL_OPEN_HEXDB 6 /* Use "dbtotxt" output as data source */ |
|
/* Allowed values for ShellState.eTraceType |
*/ |
#define SHELL_TRACE_PLAIN 0 /* Show input SQL text */ |
#define SHELL_TRACE_EXPANDED 1 /* Show expanded SQL text */ |
#define SHELL_TRACE_NORMALIZED 2 /* Show normalized SQL text */ |
|
/* Bits in the ShellState.flgProgress variable */ |
#define SHELL_PROGRESS_QUIET 0x01 /* Omit announcing every progress callback */ |
#define SHELL_PROGRESS_RESET 0x02 /* Reset the count when the progres |
** callback limit is reached, and for each |
** top-level SQL statement */ |
#define SHELL_PROGRESS_ONCE 0x04 /* Cancel the --limit after firing once */ |
|
/* |
** These are the allowed shellFlgs values |
*/ |
#define SHFLG_Pagecache 0x00000001 /* The --pagecache option is used */ |
#define SHFLG_Lookaside 0x00000002 /* Lookaside memory is used */ |
#define SHFLG_Backslash 0x00000004 /* The --backslash option is used */ |
#define SHFLG_PreserveRowid 0x00000008 /* .dump preserves rowid values */ |
#define SHFLG_Newlines 0x00000010 /* .dump --newline flag */ |
#define SHFLG_CountChanges 0x00000020 /* .changes setting */ |
#define SHFLG_Echo 0x00000040 /* .echo or --echo setting */ |
#define SHFLG_HeaderSet 0x00000080 /* .header has been used */ |
#define SHFLG_DumpDataOnly 0x00000100 /* .dump show data only */ |
#define SHFLG_DumpNoSys 0x00000200 /* .dump omits system tables */ |
|
/* |
** Macros for testing and setting shellFlgs |
*/ |
#define ShellHasFlag(P,X) (((P)->shellFlgs & (X))!=0) |
#define ShellSetFlag(P,X) ((P)->shellFlgs|=(X)) |
#define ShellClearFlag(P,X) ((P)->shellFlgs&=(~(X))) |
|
/* |
** These are the allowed modes. |
*/ |
#define MODE_Line 0 /* One column per line. Blank line between records */ |
#define MODE_Column 1 /* One record per line in neat columns */ |
#define MODE_List 2 /* One record per line with a separator */ |
#define MODE_Semi 3 /* Same as MODE_List but append ";" to each line */ |
#define MODE_Html 4 /* Generate an XHTML table */ |
#define MODE_Insert 5 /* Generate SQL "insert" statements */ |
#define MODE_Quote 6 /* Quote values as for SQL */ |
#define MODE_Tcl 7 /* Generate ANSI-C or TCL quoted elements */ |
#define MODE_Csv 8 /* Quote strings, numbers are plain */ |
#define MODE_Explain 9 /* Like MODE_Column, but do not truncate data */ |
#define MODE_Ascii 10 /* Use ASCII unit and record separators (0x1F/0x1E) */ |
#define MODE_Pretty 11 /* Pretty-print schemas */ |
#define MODE_EQP 12 /* Converts EXPLAIN QUERY PLAN output into a graph */ |
#define MODE_Json 13 /* Output JSON */ |
#define MODE_Markdown 14 /* Markdown formatting */ |
#define MODE_Table 15 /* MySQL-style table formatting */ |
#define MODE_Box 16 /* Unicode box-drawing characters */ |
|
static const char *modeDescr[] = { |
"line", |
"column", |
"list", |
"semi", |
"html", |
"insert", |
"quote", |
"tcl", |
"csv", |
"explain", |
"ascii", |
"prettyprint", |
"eqp", |
"json", |
"markdown", |
"table", |
"box" |
}; |
|
/* |
** These are the column/row/line separators used by the various |
** import/export modes. |
*/ |
#define SEP_Column "|" |
#define SEP_Row "\n" |
#define SEP_Tab "\t" |
#define SEP_Space " " |
#define SEP_Comma "," |
#define SEP_CrLf "\r\n" |
#define SEP_Unit "\x1F" |
#define SEP_Record "\x1E" |
|
/* |
** A callback for the sqlite3_log() interface. |
*/ |
static void shellLog(void *pArg, int iErrCode, const char *zMsg){ |
ShellState *p = (ShellState*)pArg; |
if( p->pLog==0 ) return; |
utf8_printf(p->pLog, "(%d) %s\n", iErrCode, zMsg); |
fflush(p->pLog); |
} |
|
/* |
** SQL function: shell_putsnl(X) |
** |
** Write the text X to the screen (or whatever output is being directed) |
** adding a newline at the end, and then return X. |
*/ |
static void shellPutsFunc( |
sqlite3_context *pCtx, |
int nVal, |
sqlite3_value **apVal |
){ |
ShellState *p = (ShellState*)sqlite3_user_data(pCtx); |
(void)nVal; |
utf8_printf(p->out, "%s\n", sqlite3_value_text(apVal[0])); |
sqlite3_result_value(pCtx, apVal[0]); |
} |
|
/* |
** SQL function: edit(VALUE) |
** edit(VALUE,EDITOR) |
** |
** These steps: |
** |
** (1) Write VALUE into a temporary file. |
** (2) Run program EDITOR on that temporary file. |
** (3) Read the temporary file back and return its content as the result. |
** (4) Delete the temporary file |
** |
** If the EDITOR argument is omitted, use the value in the VISUAL |
** environment variable. If still there is no EDITOR, through an error. |
** |
** Also throw an error if the EDITOR program returns a non-zero exit code. |
*/ |
#ifndef SQLITE_NOHAVE_SYSTEM |
static void editFunc( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
const char *zEditor; |
char *zTempFile = 0; |
sqlite3 *db; |
char *zCmd = 0; |
int bBin; |
int rc; |
int hasCRNL = 0; |
FILE *f = 0; |
sqlite3_int64 sz; |
sqlite3_int64 x; |
unsigned char *p = 0; |
|
if( argc==2 ){ |
zEditor = (const char*)sqlite3_value_text(argv[1]); |
}else{ |
zEditor = getenv("VISUAL"); |
} |
if( zEditor==0 ){ |
sqlite3_result_error(context, "no editor for edit()", -1); |
return; |
} |
if( sqlite3_value_type(argv[0])==SQLITE_NULL ){ |
sqlite3_result_error(context, "NULL input to edit()", -1); |
return; |
} |
db = sqlite3_context_db_handle(context); |
zTempFile = 0; |
sqlite3_file_control(db, 0, SQLITE_FCNTL_TEMPFILENAME, &zTempFile); |
if( zTempFile==0 ){ |
sqlite3_uint64 r = 0; |
sqlite3_randomness(sizeof(r), &r); |
zTempFile = sqlite3_mprintf("temp%llx", r); |
if( zTempFile==0 ){ |
sqlite3_result_error_nomem(context); |
return; |
} |
} |
bBin = sqlite3_value_type(argv[0])==SQLITE_BLOB; |
/* When writing the file to be edited, do \n to \r\n conversions on systems |
** that want \r\n line endings */ |
f = fopen(zTempFile, bBin ? "wb" : "w"); |
if( f==0 ){ |
sqlite3_result_error(context, "edit() cannot open temp file", -1); |
goto edit_func_end; |
} |
sz = sqlite3_value_bytes(argv[0]); |
if( bBin ){ |
x = fwrite(sqlite3_value_blob(argv[0]), 1, (size_t)sz, f); |
}else{ |
const char *z = (const char*)sqlite3_value_text(argv[0]); |
/* Remember whether or not the value originally contained \r\n */ |
if( z && strstr(z,"\r\n")!=0 ) hasCRNL = 1; |
x = fwrite(sqlite3_value_text(argv[0]), 1, (size_t)sz, f); |
} |
fclose(f); |
f = 0; |
if( x!=sz ){ |
sqlite3_result_error(context, "edit() could not write the whole file", -1); |
goto edit_func_end; |
} |
zCmd = sqlite3_mprintf("%s \"%s\"", zEditor, zTempFile); |
if( zCmd==0 ){ |
sqlite3_result_error_nomem(context); |
goto edit_func_end; |
} |
rc = system(zCmd); |
sqlite3_free(zCmd); |
if( rc ){ |
sqlite3_result_error(context, "EDITOR returned non-zero", -1); |
goto edit_func_end; |
} |
f = fopen(zTempFile, "rb"); |
if( f==0 ){ |
sqlite3_result_error(context, |
"edit() cannot reopen temp file after edit", -1); |
goto edit_func_end; |
} |
fseek(f, 0, SEEK_END); |
sz = ftell(f); |
rewind(f); |
p = sqlite3_malloc64( sz+1 ); |
if( p==0 ){ |
sqlite3_result_error_nomem(context); |
goto edit_func_end; |
} |
x = fread(p, 1, (size_t)sz, f); |
fclose(f); |
f = 0; |
if( x!=sz ){ |
sqlite3_result_error(context, "could not read back the whole file", -1); |
goto edit_func_end; |
} |
if( bBin ){ |
sqlite3_result_blob64(context, p, sz, sqlite3_free); |
}else{ |
sqlite3_int64 i, j; |
if( hasCRNL ){ |
/* If the original contains \r\n then do no conversions back to \n */ |
j = sz; |
}else{ |
/* If the file did not originally contain \r\n then convert any new |
** \r\n back into \n */ |
for(i=j=0; i<sz; i++){ |
if( p[i]=='\r' && p[i+1]=='\n' ) i++; |
p[j++] = p[i]; |
} |
sz = j; |
p[sz] = 0; |
} |
sqlite3_result_text64(context, (const char*)p, sz, |
sqlite3_free, SQLITE_UTF8); |
} |
p = 0; |
|
edit_func_end: |
if( f ) fclose(f); |
unlink(zTempFile); |
sqlite3_free(zTempFile); |
sqlite3_free(p); |
} |
#endif /* SQLITE_NOHAVE_SYSTEM */ |
|
/* |
** Save or restore the current output mode |
*/ |
static void outputModePush(ShellState *p){ |
p->modePrior = p->mode; |
p->priorShFlgs = p->shellFlgs; |
memcpy(p->colSepPrior, p->colSeparator, sizeof(p->colSeparator)); |
memcpy(p->rowSepPrior, p->rowSeparator, sizeof(p->rowSeparator)); |
} |
static void outputModePop(ShellState *p){ |
p->mode = p->modePrior; |
p->shellFlgs = p->priorShFlgs; |
memcpy(p->colSeparator, p->colSepPrior, sizeof(p->colSeparator)); |
memcpy(p->rowSeparator, p->rowSepPrior, sizeof(p->rowSeparator)); |
} |
|
/* |
** Output the given string as a hex-encoded blob (eg. X'1234' ) |
*/ |
static void output_hex_blob(FILE *out, const void *pBlob, int nBlob){ |
int i; |
char *zBlob = (char *)pBlob; |
raw_printf(out,"X'"); |
for(i=0; i<nBlob; i++){ raw_printf(out,"%02x",zBlob[i]&0xff); } |
raw_printf(out,"'"); |
} |
|
/* |
** Find a string that is not found anywhere in z[]. Return a pointer |
** to that string. |
** |
** Try to use zA and zB first. If both of those are already found in z[] |
** then make up some string and store it in the buffer zBuf. |
*/ |
static const char *unused_string( |
const char *z, /* Result must not appear anywhere in z */ |
const char *zA, const char *zB, /* Try these first */ |
char *zBuf /* Space to store a generated string */ |
){ |
unsigned i = 0; |
if( strstr(z, zA)==0 ) return zA; |
if( strstr(z, zB)==0 ) return zB; |
do{ |
sqlite3_snprintf(20,zBuf,"(%s%u)", zA, i++); |
}while( strstr(z,zBuf)!=0 ); |
return zBuf; |
} |
|
/* |
** Output the given string as a quoted string using SQL quoting conventions. |
** |
** See also: output_quoted_escaped_string() |
*/ |
static void output_quoted_string(FILE *out, const char *z){ |
int i; |
char c; |
setBinaryMode(out, 1); |
for(i=0; (c = z[i])!=0 && c!='\''; i++){} |
if( c==0 ){ |
utf8_printf(out,"'%s'",z); |
}else{ |
raw_printf(out, "'"); |
while( *z ){ |
for(i=0; (c = z[i])!=0 && c!='\''; i++){} |
if( c=='\'' ) i++; |
if( i ){ |
utf8_printf(out, "%.*s", i, z); |
z += i; |
} |
if( c=='\'' ){ |
raw_printf(out, "'"); |
continue; |
} |
if( c==0 ){ |
break; |
} |
z++; |
} |
raw_printf(out, "'"); |
} |
setTextMode(out, 1); |
} |
|
/* |
** Output the given string as a quoted string using SQL quoting conventions. |
** Additionallly , escape the "\n" and "\r" characters so that they do not |
** get corrupted by end-of-line translation facilities in some operating |
** systems. |
** |
** This is like output_quoted_string() but with the addition of the \r\n |
** escape mechanism. |
*/ |
static void output_quoted_escaped_string(FILE *out, const char *z){ |
int i; |
char c; |
setBinaryMode(out, 1); |
for(i=0; (c = z[i])!=0 && c!='\'' && c!='\n' && c!='\r'; i++){} |
if( c==0 ){ |
utf8_printf(out,"'%s'",z); |
}else{ |
const char *zNL = 0; |
const char *zCR = 0; |
int nNL = 0; |
int nCR = 0; |
char zBuf1[20], zBuf2[20]; |
for(i=0; z[i]; i++){ |
if( z[i]=='\n' ) nNL++; |
if( z[i]=='\r' ) nCR++; |
} |
if( nNL ){ |
raw_printf(out, "replace("); |
zNL = unused_string(z, "\\n", "\\012", zBuf1); |
} |
if( nCR ){ |
raw_printf(out, "replace("); |
zCR = unused_string(z, "\\r", "\\015", zBuf2); |
} |
raw_printf(out, "'"); |
while( *z ){ |
for(i=0; (c = z[i])!=0 && c!='\n' && c!='\r' && c!='\''; i++){} |
if( c=='\'' ) i++; |
if( i ){ |
utf8_printf(out, "%.*s", i, z); |
z += i; |
} |
if( c=='\'' ){ |
raw_printf(out, "'"); |
continue; |
} |
if( c==0 ){ |
break; |
} |
z++; |
if( c=='\n' ){ |
raw_printf(out, "%s", zNL); |
continue; |
} |
raw_printf(out, "%s", zCR); |
} |
raw_printf(out, "'"); |
if( nCR ){ |
raw_printf(out, ",'%s',char(13))", zCR); |
} |
if( nNL ){ |
raw_printf(out, ",'%s',char(10))", zNL); |
} |
} |
setTextMode(out, 1); |
} |
|
/* |
** Output the given string as a quoted according to C or TCL quoting rules. |
*/ |
static void output_c_string(FILE *out, const char *z){ |
unsigned int c; |
fputc('"', out); |
while( (c = *(z++))!=0 ){ |
if( c=='\\' ){ |
fputc(c, out); |
fputc(c, out); |
}else if( c=='"' ){ |
fputc('\\', out); |
fputc('"', out); |
}else if( c=='\t' ){ |
fputc('\\', out); |
fputc('t', out); |
}else if( c=='\n' ){ |
fputc('\\', out); |
fputc('n', out); |
}else if( c=='\r' ){ |
fputc('\\', out); |
fputc('r', out); |
}else if( !isprint(c&0xff) ){ |
raw_printf(out, "\\%03o", c&0xff); |
}else{ |
fputc(c, out); |
} |
} |
fputc('"', out); |
} |
|
/* |
** Output the given string as a quoted according to JSON quoting rules. |
*/ |
static void output_json_string(FILE *out, const char *z, int n){ |
unsigned int c; |
if( n<0 ) n = (int)strlen(z); |
fputc('"', out); |
while( n-- ){ |
c = *(z++); |
if( c=='\\' || c=='"' ){ |
fputc('\\', out); |
fputc(c, out); |
}else if( c<=0x1f ){ |
fputc('\\', out); |
if( c=='\b' ){ |
fputc('b', out); |
}else if( c=='\f' ){ |
fputc('f', out); |
}else if( c=='\n' ){ |
fputc('n', out); |
}else if( c=='\r' ){ |
fputc('r', out); |
}else if( c=='\t' ){ |
fputc('t', out); |
}else{ |
raw_printf(out, "u%04x",c); |
} |
}else{ |
fputc(c, out); |
} |
} |
fputc('"', out); |
} |
|
/* |
** Output the given string with characters that are special to |
** HTML escaped. |
*/ |
static void output_html_string(FILE *out, const char *z){ |
int i; |
if( z==0 ) z = ""; |
while( *z ){ |
for(i=0; z[i] |
&& z[i]!='<' |
&& z[i]!='&' |
&& z[i]!='>' |
&& z[i]!='\"' |
&& z[i]!='\''; |
i++){} |
if( i>0 ){ |
utf8_printf(out,"%.*s",i,z); |
} |
if( z[i]=='<' ){ |
raw_printf(out,"<"); |
}else if( z[i]=='&' ){ |
raw_printf(out,"&"); |
}else if( z[i]=='>' ){ |
raw_printf(out,">"); |
}else if( z[i]=='\"' ){ |
raw_printf(out,"""); |
}else if( z[i]=='\'' ){ |
raw_printf(out,"'"); |
}else{ |
break; |
} |
z += i + 1; |
} |
} |
|
/* |
** If a field contains any character identified by a 1 in the following |
** array, then the string must be quoted for CSV. |
*/ |
static const char needCsvQuote[] = { |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
}; |
|
/* |
** Output a single term of CSV. Actually, p->colSeparator is used for |
** the separator, which may or may not be a comma. p->nullValue is |
** the null value. Strings are quoted if necessary. The separator |
** is only issued if bSep is true. |
*/ |
static void output_csv(ShellState *p, const char *z, int bSep){ |
FILE *out = p->out; |
if( z==0 ){ |
utf8_printf(out,"%s",p->nullValue); |
}else{ |
int i; |
int nSep = strlen30(p->colSeparator); |
for(i=0; z[i]; i++){ |
if( needCsvQuote[((unsigned char*)z)[i]] |
|| (z[i]==p->colSeparator[0] && |
(nSep==1 || memcmp(z, p->colSeparator, nSep)==0)) ){ |
i = 0; |
break; |
} |
} |
if( i==0 ){ |
char *zQuoted = sqlite3_mprintf("\"%w\"", z); |
utf8_printf(out, "%s", zQuoted); |
sqlite3_free(zQuoted); |
}else{ |
utf8_printf(out, "%s", z); |
} |
} |
if( bSep ){ |
utf8_printf(p->out, "%s", p->colSeparator); |
} |
} |
|
/* |
** This routine runs when the user presses Ctrl-C |
*/ |
static void interrupt_handler(int NotUsed){ |
UNUSED_PARAMETER(NotUsed); |
seenInterrupt++; |
if( seenInterrupt>2 ) exit(1); |
if( globalDb ) sqlite3_interrupt(globalDb); |
} |
|
#if (defined(_WIN32) || defined(WIN32)) && !defined(_WIN32_WCE) |
/* |
** This routine runs for console events (e.g. Ctrl-C) on Win32 |
*/ |
static BOOL WINAPI ConsoleCtrlHandler( |
DWORD dwCtrlType /* One of the CTRL_*_EVENT constants */ |
){ |
if( dwCtrlType==CTRL_C_EVENT ){ |
interrupt_handler(0); |
return TRUE; |
} |
return FALSE; |
} |
#endif |
|
#ifndef SQLITE_OMIT_AUTHORIZATION |
/* |
** When the ".auth ON" is set, the following authorizer callback is |
** invoked. It always returns SQLITE_OK. |
*/ |
static int shellAuth( |
void *pClientData, |
int op, |
const char *zA1, |
const char *zA2, |
const char *zA3, |
const char *zA4 |
){ |
ShellState *p = (ShellState*)pClientData; |
static const char *azAction[] = { 0, |
"CREATE_INDEX", "CREATE_TABLE", "CREATE_TEMP_INDEX", |
"CREATE_TEMP_TABLE", "CREATE_TEMP_TRIGGER", "CREATE_TEMP_VIEW", |
"CREATE_TRIGGER", "CREATE_VIEW", "DELETE", |
"DROP_INDEX", "DROP_TABLE", "DROP_TEMP_INDEX", |
"DROP_TEMP_TABLE", "DROP_TEMP_TRIGGER", "DROP_TEMP_VIEW", |
"DROP_TRIGGER", "DROP_VIEW", "INSERT", |
"PRAGMA", "READ", "SELECT", |
"TRANSACTION", "UPDATE", "ATTACH", |
"DETACH", "ALTER_TABLE", "REINDEX", |
"ANALYZE", "CREATE_VTABLE", "DROP_VTABLE", |
"FUNCTION", "SAVEPOINT", "RECURSIVE" |
}; |
int i; |
const char *az[4]; |
az[0] = zA1; |
az[1] = zA2; |
az[2] = zA3; |
az[3] = zA4; |
utf8_printf(p->out, "authorizer: %s", azAction[op]); |
for(i=0; i<4; i++){ |
raw_printf(p->out, " "); |
if( az[i] ){ |
output_c_string(p->out, az[i]); |
}else{ |
raw_printf(p->out, "NULL"); |
} |
} |
raw_printf(p->out, "\n"); |
return SQLITE_OK; |
} |
#endif |
|
/* |
** Print a schema statement. Part of MODE_Semi and MODE_Pretty output. |
** |
** This routine converts some CREATE TABLE statements for shadow tables |
** in FTS3/4/5 into CREATE TABLE IF NOT EXISTS statements. |
*/ |
static void printSchemaLine(FILE *out, const char *z, const char *zTail){ |
if( z==0 ) return; |
if( zTail==0 ) return; |
if( sqlite3_strglob("CREATE TABLE ['\"]*", z)==0 ){ |
utf8_printf(out, "CREATE TABLE IF NOT EXISTS %s%s", z+13, zTail); |
}else{ |
utf8_printf(out, "%s%s", z, zTail); |
} |
} |
static void printSchemaLineN(FILE *out, char *z, int n, const char *zTail){ |
char c = z[n]; |
z[n] = 0; |
printSchemaLine(out, z, zTail); |
z[n] = c; |
} |
|
/* |
** Return true if string z[] has nothing but whitespace and comments to the |
** end of the first line. |
*/ |
static int wsToEol(const char *z){ |
int i; |
for(i=0; z[i]; i++){ |
if( z[i]=='\n' ) return 1; |
if( IsSpace(z[i]) ) continue; |
if( z[i]=='-' && z[i+1]=='-' ) return 1; |
return 0; |
} |
return 1; |
} |
|
/* |
** Add a new entry to the EXPLAIN QUERY PLAN data |
*/ |
static void eqp_append(ShellState *p, int iEqpId, int p2, const char *zText){ |
EQPGraphRow *pNew; |
int nText = strlen30(zText); |
if( p->autoEQPtest ){ |
utf8_printf(p->out, "%d,%d,%s\n", iEqpId, p2, zText); |
} |
pNew = sqlite3_malloc64( sizeof(*pNew) + nText ); |
if( pNew==0 ) shell_out_of_memory(); |
pNew->iEqpId = iEqpId; |
pNew->iParentId = p2; |
memcpy(pNew->zText, zText, nText+1); |
pNew->pNext = 0; |
if( p->sGraph.pLast ){ |
p->sGraph.pLast->pNext = pNew; |
}else{ |
p->sGraph.pRow = pNew; |
} |
p->sGraph.pLast = pNew; |
} |
|
/* |
** Free and reset the EXPLAIN QUERY PLAN data that has been collected |
** in p->sGraph. |
*/ |
static void eqp_reset(ShellState *p){ |
EQPGraphRow *pRow, *pNext; |
for(pRow = p->sGraph.pRow; pRow; pRow = pNext){ |
pNext = pRow->pNext; |
sqlite3_free(pRow); |
} |
memset(&p->sGraph, 0, sizeof(p->sGraph)); |
} |
|
/* Return the next EXPLAIN QUERY PLAN line with iEqpId that occurs after |
** pOld, or return the first such line if pOld is NULL |
*/ |
static EQPGraphRow *eqp_next_row(ShellState *p, int iEqpId, EQPGraphRow *pOld){ |
EQPGraphRow *pRow = pOld ? pOld->pNext : p->sGraph.pRow; |
while( pRow && pRow->iParentId!=iEqpId ) pRow = pRow->pNext; |
return pRow; |
} |
|
/* Render a single level of the graph that has iEqpId as its parent. Called |
** recursively to render sublevels. |
*/ |
static void eqp_render_level(ShellState *p, int iEqpId){ |
EQPGraphRow *pRow, *pNext; |
int n = strlen30(p->sGraph.zPrefix); |
char *z; |
for(pRow = eqp_next_row(p, iEqpId, 0); pRow; pRow = pNext){ |
pNext = eqp_next_row(p, iEqpId, pRow); |
z = pRow->zText; |
utf8_printf(p->out, "%s%s%s\n", p->sGraph.zPrefix, |
pNext ? "|--" : "`--", z); |
if( n<(int)sizeof(p->sGraph.zPrefix)-7 ){ |
memcpy(&p->sGraph.zPrefix[n], pNext ? "| " : " ", 4); |
eqp_render_level(p, pRow->iEqpId); |
p->sGraph.zPrefix[n] = 0; |
} |
} |
} |
|
/* |
** Display and reset the EXPLAIN QUERY PLAN data |
*/ |
static void eqp_render(ShellState *p){ |
EQPGraphRow *pRow = p->sGraph.pRow; |
if( pRow ){ |
if( pRow->zText[0]=='-' ){ |
if( pRow->pNext==0 ){ |
eqp_reset(p); |
return; |
} |
utf8_printf(p->out, "%s\n", pRow->zText+3); |
p->sGraph.pRow = pRow->pNext; |
sqlite3_free(pRow); |
}else{ |
utf8_printf(p->out, "QUERY PLAN\n"); |
} |
p->sGraph.zPrefix[0] = 0; |
eqp_render_level(p, 0); |
eqp_reset(p); |
} |
} |
|
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK |
/* |
** Progress handler callback. |
*/ |
static int progress_handler(void *pClientData) { |
ShellState *p = (ShellState*)pClientData; |
p->nProgress++; |
if( p->nProgress>=p->mxProgress && p->mxProgress>0 ){ |
raw_printf(p->out, "Progress limit reached (%u)\n", p->nProgress); |
if( p->flgProgress & SHELL_PROGRESS_RESET ) p->nProgress = 0; |
if( p->flgProgress & SHELL_PROGRESS_ONCE ) p->mxProgress = 0; |
return 1; |
} |
if( (p->flgProgress & SHELL_PROGRESS_QUIET)==0 ){ |
raw_printf(p->out, "Progress %u\n", p->nProgress); |
} |
return 0; |
} |
#endif /* SQLITE_OMIT_PROGRESS_CALLBACK */ |
|
/* |
** Print N dashes |
*/ |
static void print_dashes(FILE *out, int N){ |
const char zDash[] = "--------------------------------------------------"; |
const int nDash = sizeof(zDash) - 1; |
while( N>nDash ){ |
fputs(zDash, out); |
N -= nDash; |
} |
raw_printf(out, "%.*s", N, zDash); |
} |
|
/* |
** Print a markdown or table-style row separator using ascii-art |
*/ |
static void print_row_separator( |
ShellState *p, |
int nArg, |
const char *zSep |
){ |
int i; |
if( nArg>0 ){ |
fputs(zSep, p->out); |
print_dashes(p->out, p->actualWidth[0]+2); |
for(i=1; i<nArg; i++){ |
fputs(zSep, p->out); |
print_dashes(p->out, p->actualWidth[i]+2); |
} |
fputs(zSep, p->out); |
} |
fputs("\n", p->out); |
} |
|
/* |
** This is the callback routine that the shell |
** invokes for each row of a query result. |
*/ |
static int shell_callback( |
void *pArg, |
int nArg, /* Number of result columns */ |
char **azArg, /* Text of each result column */ |
char **azCol, /* Column names */ |
int *aiType /* Column types. Might be NULL */ |
){ |
int i; |
ShellState *p = (ShellState*)pArg; |
|
if( azArg==0 ) return 0; |
switch( p->cMode ){ |
case MODE_Line: { |
int w = 5; |
if( azArg==0 ) break; |
for(i=0; i<nArg; i++){ |
int len = strlen30(azCol[i] ? azCol[i] : ""); |
if( len>w ) w = len; |
} |
if( p->cnt++>0 ) utf8_printf(p->out, "%s", p->rowSeparator); |
for(i=0; i<nArg; i++){ |
utf8_printf(p->out,"%*s = %s%s", w, azCol[i], |
azArg[i] ? azArg[i] : p->nullValue, p->rowSeparator); |
} |
break; |
} |
case MODE_Explain: { |
static const int aExplainWidth[] = {4, 13, 4, 4, 4, 13, 2, 13}; |
if( nArg>ArraySize(aExplainWidth) ){ |
nArg = ArraySize(aExplainWidth); |
} |
if( p->cnt++==0 ){ |
for(i=0; i<nArg; i++){ |
int w = aExplainWidth[i]; |
utf8_width_print(p->out, w, azCol[i]); |
fputs(i==nArg-1 ? "\n" : " ", p->out); |
} |
for(i=0; i<nArg; i++){ |
int w = aExplainWidth[i]; |
print_dashes(p->out, w); |
fputs(i==nArg-1 ? "\n" : " ", p->out); |
} |
} |
if( azArg==0 ) break; |
for(i=0; i<nArg; i++){ |
int w = aExplainWidth[i]; |
if( i==nArg-1 ) w = 0; |
if( azArg[i] && strlenChar(azArg[i])>w ){ |
w = strlenChar(azArg[i]); |
} |
if( i==1 && p->aiIndent && p->pStmt ){ |
if( p->iIndent<p->nIndent ){ |
utf8_printf(p->out, "%*.s", p->aiIndent[p->iIndent], ""); |
} |
p->iIndent++; |
} |
utf8_width_print(p->out, w, azArg[i] ? azArg[i] : p->nullValue); |
fputs(i==nArg-1 ? "\n" : " ", p->out); |
} |
break; |
} |
case MODE_Semi: { /* .schema and .fullschema output */ |
printSchemaLine(p->out, azArg[0], ";\n"); |
break; |
} |
case MODE_Pretty: { /* .schema and .fullschema with --indent */ |
char *z; |
int j; |
int nParen = 0; |
char cEnd = 0; |
char c; |
int nLine = 0; |
assert( nArg==1 ); |
if( azArg[0]==0 ) break; |
if( sqlite3_strlike("CREATE VIEW%", azArg[0], 0)==0 |
|| sqlite3_strlike("CREATE TRIG%", azArg[0], 0)==0 |
){ |
utf8_printf(p->out, "%s;\n", azArg[0]); |
break; |
} |
z = sqlite3_mprintf("%s", azArg[0]); |
j = 0; |
for(i=0; IsSpace(z[i]); i++){} |
for(; (c = z[i])!=0; i++){ |
if( IsSpace(c) ){ |
if( z[j-1]=='\r' ) z[j-1] = '\n'; |
if( IsSpace(z[j-1]) || z[j-1]=='(' ) continue; |
}else if( (c=='(' || c==')') && j>0 && IsSpace(z[j-1]) ){ |
j--; |
} |
z[j++] = c; |
} |
while( j>0 && IsSpace(z[j-1]) ){ j--; } |
z[j] = 0; |
if( strlen30(z)>=79 ){ |
for(i=j=0; (c = z[i])!=0; i++){ /* Copy from z[i] back to z[j] */ |
if( c==cEnd ){ |
cEnd = 0; |
}else if( c=='"' || c=='\'' || c=='`' ){ |
cEnd = c; |
}else if( c=='[' ){ |
cEnd = ']'; |
}else if( c=='-' && z[i+1]=='-' ){ |
cEnd = '\n'; |
}else if( c=='(' ){ |
nParen++; |
}else if( c==')' ){ |
nParen--; |
if( nLine>0 && nParen==0 && j>0 ){ |
printSchemaLineN(p->out, z, j, "\n"); |
j = 0; |
} |
} |
z[j++] = c; |
if( nParen==1 && cEnd==0 |
&& (c=='(' || c=='\n' || (c==',' && !wsToEol(z+i+1))) |
){ |
if( c=='\n' ) j--; |
printSchemaLineN(p->out, z, j, "\n "); |
j = 0; |
nLine++; |
while( IsSpace(z[i+1]) ){ i++; } |
} |
} |
z[j] = 0; |
} |
printSchemaLine(p->out, z, ";\n"); |
sqlite3_free(z); |
break; |
} |
case MODE_List: { |
if( p->cnt++==0 && p->showHeader ){ |
for(i=0; i<nArg; i++){ |
utf8_printf(p->out,"%s%s",azCol[i], |
i==nArg-1 ? p->rowSeparator : p->colSeparator); |
} |
} |
if( azArg==0 ) break; |
for(i=0; i<nArg; i++){ |
char *z = azArg[i]; |
if( z==0 ) z = p->nullValue; |
utf8_printf(p->out, "%s", z); |
if( i<nArg-1 ){ |
utf8_printf(p->out, "%s", p->colSeparator); |
}else{ |
utf8_printf(p->out, "%s", p->rowSeparator); |
} |
} |
break; |
} |
case MODE_Html: { |
if( p->cnt++==0 && p->showHeader ){ |
raw_printf(p->out,"<TR>"); |
for(i=0; i<nArg; i++){ |
raw_printf(p->out,"<TH>"); |
output_html_string(p->out, azCol[i]); |
raw_printf(p->out,"</TH>\n"); |
} |
raw_printf(p->out,"</TR>\n"); |
} |
if( azArg==0 ) break; |
raw_printf(p->out,"<TR>"); |
for(i=0; i<nArg; i++){ |
raw_printf(p->out,"<TD>"); |
output_html_string(p->out, azArg[i] ? azArg[i] : p->nullValue); |
raw_printf(p->out,"</TD>\n"); |
} |
raw_printf(p->out,"</TR>\n"); |
break; |
} |
case MODE_Tcl: { |
if( p->cnt++==0 && p->showHeader ){ |
for(i=0; i<nArg; i++){ |
output_c_string(p->out,azCol[i] ? azCol[i] : ""); |
if(i<nArg-1) utf8_printf(p->out, "%s", p->colSeparator); |
} |
utf8_printf(p->out, "%s", p->rowSeparator); |
} |
if( azArg==0 ) break; |
for(i=0; i<nArg; i++){ |
output_c_string(p->out, azArg[i] ? azArg[i] : p->nullValue); |
if(i<nArg-1) utf8_printf(p->out, "%s", p->colSeparator); |
} |
utf8_printf(p->out, "%s", p->rowSeparator); |
break; |
} |
case MODE_Csv: { |
setBinaryMode(p->out, 1); |
if( p->cnt++==0 && p->showHeader ){ |
for(i=0; i<nArg; i++){ |
output_csv(p, azCol[i] ? azCol[i] : "", i<nArg-1); |
} |
utf8_printf(p->out, "%s", p->rowSeparator); |
} |
if( nArg>0 ){ |
for(i=0; i<nArg; i++){ |
output_csv(p, azArg[i], i<nArg-1); |
} |
utf8_printf(p->out, "%s", p->rowSeparator); |
} |
setTextMode(p->out, 1); |
break; |
} |
case MODE_Insert: { |
if( azArg==0 ) break; |
utf8_printf(p->out,"INSERT INTO %s",p->zDestTable); |
if( p->showHeader ){ |
raw_printf(p->out,"("); |
for(i=0; i<nArg; i++){ |
if( i>0 ) raw_printf(p->out, ","); |
if( quoteChar(azCol[i]) ){ |
char *z = sqlite3_mprintf("\"%w\"", azCol[i]); |
utf8_printf(p->out, "%s", z); |
sqlite3_free(z); |
}else{ |
raw_printf(p->out, "%s", azCol[i]); |
} |
} |
raw_printf(p->out,")"); |
} |
p->cnt++; |
for(i=0; i<nArg; i++){ |
raw_printf(p->out, i>0 ? "," : " VALUES("); |
if( (azArg[i]==0) || (aiType && aiType[i]==SQLITE_NULL) ){ |
utf8_printf(p->out,"NULL"); |
}else if( aiType && aiType[i]==SQLITE_TEXT ){ |
if( ShellHasFlag(p, SHFLG_Newlines) ){ |
output_quoted_string(p->out, azArg[i]); |
}else{ |
output_quoted_escaped_string(p->out, azArg[i]); |
} |
}else if( aiType && aiType[i]==SQLITE_INTEGER ){ |
utf8_printf(p->out,"%s", azArg[i]); |
}else if( aiType && aiType[i]==SQLITE_FLOAT ){ |
char z[50]; |
double r = sqlite3_column_double(p->pStmt, i); |
sqlite3_uint64 ur; |
memcpy(&ur,&r,sizeof(r)); |
if( ur==0x7ff0000000000000LL ){ |
raw_printf(p->out, "1e999"); |
}else if( ur==0xfff0000000000000LL ){ |
raw_printf(p->out, "-1e999"); |
}else{ |
sqlite3_snprintf(50,z,"%!.20g", r); |
raw_printf(p->out, "%s", z); |
} |
}else if( aiType && aiType[i]==SQLITE_BLOB && p->pStmt ){ |
const void *pBlob = sqlite3_column_blob(p->pStmt, i); |
int nBlob = sqlite3_column_bytes(p->pStmt, i); |
output_hex_blob(p->out, pBlob, nBlob); |
}else if( isNumber(azArg[i], 0) ){ |
utf8_printf(p->out,"%s", azArg[i]); |
}else if( ShellHasFlag(p, SHFLG_Newlines) ){ |
output_quoted_string(p->out, azArg[i]); |
}else{ |
output_quoted_escaped_string(p->out, azArg[i]); |
} |
} |
raw_printf(p->out,");\n"); |
break; |
} |
case MODE_Json: { |
if( azArg==0 ) break; |
if( p->cnt==0 ){ |
fputs("[{", p->out); |
}else{ |
fputs(",\n{", p->out); |
} |
p->cnt++; |
for(i=0; i<nArg; i++){ |
output_json_string(p->out, azCol[i], -1); |
putc(':', p->out); |
if( (azArg[i]==0) || (aiType && aiType[i]==SQLITE_NULL) ){ |
fputs("null",p->out); |
}else if( aiType && aiType[i]==SQLITE_FLOAT ){ |
char z[50]; |
double r = sqlite3_column_double(p->pStmt, i); |
sqlite3_uint64 ur; |
memcpy(&ur,&r,sizeof(r)); |
if( ur==0x7ff0000000000000LL ){ |
raw_printf(p->out, "1e999"); |
}else if( ur==0xfff0000000000000LL ){ |
raw_printf(p->out, "-1e999"); |
}else{ |
sqlite3_snprintf(50,z,"%!.20g", r); |
raw_printf(p->out, "%s", z); |
} |
}else if( aiType && aiType[i]==SQLITE_BLOB && p->pStmt ){ |
const void *pBlob = sqlite3_column_blob(p->pStmt, i); |
int nBlob = sqlite3_column_bytes(p->pStmt, i); |
output_json_string(p->out, pBlob, nBlob); |
}else if( aiType && aiType[i]==SQLITE_TEXT ){ |
output_json_string(p->out, azArg[i], -1); |
}else{ |
utf8_printf(p->out,"%s", azArg[i]); |
} |
if( i<nArg-1 ){ |
putc(',', p->out); |
} |
} |
putc('}', p->out); |
break; |
} |
case MODE_Quote: { |
if( azArg==0 ) break; |
if( p->cnt==0 && p->showHeader ){ |
for(i=0; i<nArg; i++){ |
if( i>0 ) fputs(p->colSeparator, p->out); |
output_quoted_string(p->out, azCol[i]); |
} |
fputs(p->rowSeparator, p->out); |
} |
p->cnt++; |
for(i=0; i<nArg; i++){ |
if( i>0 ) fputs(p->colSeparator, p->out); |
if( (azArg[i]==0) || (aiType && aiType[i]==SQLITE_NULL) ){ |
utf8_printf(p->out,"NULL"); |
}else if( aiType && aiType[i]==SQLITE_TEXT ){ |
output_quoted_string(p->out, azArg[i]); |
}else if( aiType && aiType[i]==SQLITE_INTEGER ){ |
utf8_printf(p->out,"%s", azArg[i]); |
}else if( aiType && aiType[i]==SQLITE_FLOAT ){ |
char z[50]; |
double r = sqlite3_column_double(p->pStmt, i); |
sqlite3_snprintf(50,z,"%!.20g", r); |
raw_printf(p->out, "%s", z); |
}else if( aiType && aiType[i]==SQLITE_BLOB && p->pStmt ){ |
const void *pBlob = sqlite3_column_blob(p->pStmt, i); |
int nBlob = sqlite3_column_bytes(p->pStmt, i); |
output_hex_blob(p->out, pBlob, nBlob); |
}else if( isNumber(azArg[i], 0) ){ |
utf8_printf(p->out,"%s", azArg[i]); |
}else{ |
output_quoted_string(p->out, azArg[i]); |
} |
} |
fputs(p->rowSeparator, p->out); |
break; |
} |
case MODE_Ascii: { |
if( p->cnt++==0 && p->showHeader ){ |
for(i=0; i<nArg; i++){ |
if( i>0 ) utf8_printf(p->out, "%s", p->colSeparator); |
utf8_printf(p->out,"%s",azCol[i] ? azCol[i] : ""); |
} |
utf8_printf(p->out, "%s", p->rowSeparator); |
} |
if( azArg==0 ) break; |
for(i=0; i<nArg; i++){ |
if( i>0 ) utf8_printf(p->out, "%s", p->colSeparator); |
utf8_printf(p->out,"%s",azArg[i] ? azArg[i] : p->nullValue); |
} |
utf8_printf(p->out, "%s", p->rowSeparator); |
break; |
} |
case MODE_EQP: { |
eqp_append(p, atoi(azArg[0]), atoi(azArg[1]), azArg[3]); |
break; |
} |
} |
return 0; |
} |
|
/* |
** This is the callback routine that the SQLite library |
** invokes for each row of a query result. |
*/ |
static int callback(void *pArg, int nArg, char **azArg, char **azCol){ |
/* since we don't have type info, call the shell_callback with a NULL value */ |
return shell_callback(pArg, nArg, azArg, azCol, NULL); |
} |
|
/* |
** This is the callback routine from sqlite3_exec() that appends all |
** output onto the end of a ShellText object. |
*/ |
static int captureOutputCallback(void *pArg, int nArg, char **azArg, char **az){ |
ShellText *p = (ShellText*)pArg; |
int i; |
UNUSED_PARAMETER(az); |
if( azArg==0 ) return 0; |
if( p->n ) appendText(p, "|", 0); |
for(i=0; i<nArg; i++){ |
if( i ) appendText(p, ",", 0); |
if( azArg[i] ) appendText(p, azArg[i], 0); |
} |
return 0; |
} |
|
/* |
** Generate an appropriate SELFTEST table in the main database. |
*/ |
static void createSelftestTable(ShellState *p){ |
char *zErrMsg = 0; |
sqlite3_exec(p->db, |
"SAVEPOINT selftest_init;\n" |
"CREATE TABLE IF NOT EXISTS selftest(\n" |
" tno INTEGER PRIMARY KEY,\n" /* Test number */ |
" op TEXT,\n" /* Operator: memo run */ |
" cmd TEXT,\n" /* Command text */ |
" ans TEXT\n" /* Desired answer */ |
");" |
"CREATE TEMP TABLE [_shell$self](op,cmd,ans);\n" |
"INSERT INTO [_shell$self](rowid,op,cmd)\n" |
" VALUES(coalesce((SELECT (max(tno)+100)/10 FROM selftest),10),\n" |
" 'memo','Tests generated by --init');\n" |
"INSERT INTO [_shell$self]\n" |
" SELECT 'run',\n" |
" 'SELECT hex(sha3_query(''SELECT type,name,tbl_name,sql " |
"FROM sqlite_schema ORDER BY 2'',224))',\n" |
" hex(sha3_query('SELECT type,name,tbl_name,sql " |
"FROM sqlite_schema ORDER BY 2',224));\n" |
"INSERT INTO [_shell$self]\n" |
" SELECT 'run'," |
" 'SELECT hex(sha3_query(''SELECT * FROM \"' ||" |
" printf('%w',name) || '\" NOT INDEXED'',224))',\n" |
" hex(sha3_query(printf('SELECT * FROM \"%w\" NOT INDEXED',name),224))\n" |
" FROM (\n" |
" SELECT name FROM sqlite_schema\n" |
" WHERE type='table'\n" |
" AND name<>'selftest'\n" |
" AND coalesce(rootpage,0)>0\n" |
" )\n" |
" ORDER BY name;\n" |
"INSERT INTO [_shell$self]\n" |
" VALUES('run','PRAGMA integrity_check','ok');\n" |
"INSERT INTO selftest(tno,op,cmd,ans)" |
" SELECT rowid*10,op,cmd,ans FROM [_shell$self];\n" |
"DROP TABLE [_shell$self];" |
,0,0,&zErrMsg); |
if( zErrMsg ){ |
utf8_printf(stderr, "SELFTEST initialization failure: %s\n", zErrMsg); |
sqlite3_free(zErrMsg); |
} |
sqlite3_exec(p->db, "RELEASE selftest_init",0,0,0); |
} |
|
|
/* |
** Set the destination table field of the ShellState structure to |
** the name of the table given. Escape any quote characters in the |
** table name. |
*/ |
static void set_table_name(ShellState *p, const char *zName){ |
int i, n; |
char cQuote; |
char *z; |
|
if( p->zDestTable ){ |
free(p->zDestTable); |
p->zDestTable = 0; |
} |
if( zName==0 ) return; |
cQuote = quoteChar(zName); |
n = strlen30(zName); |
if( cQuote ) n += n+2; |
z = p->zDestTable = malloc( n+1 ); |
if( z==0 ) shell_out_of_memory(); |
n = 0; |
if( cQuote ) z[n++] = cQuote; |
for(i=0; zName[i]; i++){ |
z[n++] = zName[i]; |
if( zName[i]==cQuote ) z[n++] = cQuote; |
} |
if( cQuote ) z[n++] = cQuote; |
z[n] = 0; |
} |
|
|
/* |
** Execute a query statement that will generate SQL output. Print |
** the result columns, comma-separated, on a line and then add a |
** semicolon terminator to the end of that line. |
** |
** If the number of columns is 1 and that column contains text "--" |
** then write the semicolon on a separate line. That way, if a |
** "--" comment occurs at the end of the statement, the comment |
** won't consume the semicolon terminator. |
*/ |
static int run_table_dump_query( |
ShellState *p, /* Query context */ |
const char *zSelect /* SELECT statement to extract content */ |
){ |
sqlite3_stmt *pSelect; |
int rc; |
int nResult; |
int i; |
const char *z; |
rc = sqlite3_prepare_v2(p->db, zSelect, -1, &pSelect, 0); |
if( rc!=SQLITE_OK || !pSelect ){ |
utf8_printf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, |
sqlite3_errmsg(p->db)); |
if( (rc&0xff)!=SQLITE_CORRUPT ) p->nErr++; |
return rc; |
} |
rc = sqlite3_step(pSelect); |
nResult = sqlite3_column_count(pSelect); |
while( rc==SQLITE_ROW ){ |
z = (const char*)sqlite3_column_text(pSelect, 0); |
utf8_printf(p->out, "%s", z); |
for(i=1; i<nResult; i++){ |
utf8_printf(p->out, ",%s", sqlite3_column_text(pSelect, i)); |
} |
if( z==0 ) z = ""; |
while( z[0] && (z[0]!='-' || z[1]!='-') ) z++; |
if( z[0] ){ |
raw_printf(p->out, "\n;\n"); |
}else{ |
raw_printf(p->out, ";\n"); |
} |
rc = sqlite3_step(pSelect); |
} |
rc = sqlite3_finalize(pSelect); |
if( rc!=SQLITE_OK ){ |
utf8_printf(p->out, "/**** ERROR: (%d) %s *****/\n", rc, |
sqlite3_errmsg(p->db)); |
if( (rc&0xff)!=SQLITE_CORRUPT ) p->nErr++; |
} |
return rc; |
} |
|
/* |
** Allocate space and save off current error string. |
*/ |
static char *save_err_msg( |
sqlite3 *db /* Database to query */ |
){ |
int nErrMsg = 1+strlen30(sqlite3_errmsg(db)); |
char *zErrMsg = sqlite3_malloc64(nErrMsg); |
if( zErrMsg ){ |
memcpy(zErrMsg, sqlite3_errmsg(db), nErrMsg); |
} |
return zErrMsg; |
} |
|
#ifdef __linux__ |
/* |
** Attempt to display I/O stats on Linux using /proc/PID/io |
*/ |
static void displayLinuxIoStats(FILE *out){ |
FILE *in; |
char z[200]; |
sqlite3_snprintf(sizeof(z), z, "/proc/%d/io", getpid()); |
in = fopen(z, "rb"); |
if( in==0 ) return; |
while( fgets(z, sizeof(z), in)!=0 ){ |
static const struct { |
const char *zPattern; |
const char *zDesc; |
} aTrans[] = { |
{ "rchar: ", "Bytes received by read():" }, |
{ "wchar: ", "Bytes sent to write():" }, |
{ "syscr: ", "Read() system calls:" }, |
{ "syscw: ", "Write() system calls:" }, |
{ "read_bytes: ", "Bytes read from storage:" }, |
{ "write_bytes: ", "Bytes written to storage:" }, |
{ "cancelled_write_bytes: ", "Cancelled write bytes:" }, |
}; |
int i; |
for(i=0; i<ArraySize(aTrans); i++){ |
int n = strlen30(aTrans[i].zPattern); |
if( strncmp(aTrans[i].zPattern, z, n)==0 ){ |
utf8_printf(out, "%-36s %s", aTrans[i].zDesc, &z[n]); |
break; |
} |
} |
} |
fclose(in); |
} |
#endif |
|
/* |
** Display a single line of status using 64-bit values. |
*/ |
static void displayStatLine( |
ShellState *p, /* The shell context */ |
char *zLabel, /* Label for this one line */ |
char *zFormat, /* Format for the result */ |
int iStatusCtrl, /* Which status to display */ |
int bReset /* True to reset the stats */ |
){ |
sqlite3_int64 iCur = -1; |
sqlite3_int64 iHiwtr = -1; |
int i, nPercent; |
char zLine[200]; |
sqlite3_status64(iStatusCtrl, &iCur, &iHiwtr, bReset); |
for(i=0, nPercent=0; zFormat[i]; i++){ |
if( zFormat[i]=='%' ) nPercent++; |
} |
if( nPercent>1 ){ |
sqlite3_snprintf(sizeof(zLine), zLine, zFormat, iCur, iHiwtr); |
}else{ |
sqlite3_snprintf(sizeof(zLine), zLine, zFormat, iHiwtr); |
} |
raw_printf(p->out, "%-36s %s\n", zLabel, zLine); |
} |
|
/* |
** Display memory stats. |
*/ |
static int display_stats( |
sqlite3 *db, /* Database to query */ |
ShellState *pArg, /* Pointer to ShellState */ |
int bReset /* True to reset the stats */ |
){ |
int iCur; |
int iHiwtr; |
FILE *out; |
if( pArg==0 || pArg->out==0 ) return 0; |
out = pArg->out; |
|
if( pArg->pStmt && pArg->statsOn==2 ){ |
int nCol, i, x; |
sqlite3_stmt *pStmt = pArg->pStmt; |
char z[100]; |
nCol = sqlite3_column_count(pStmt); |
raw_printf(out, "%-36s %d\n", "Number of output columns:", nCol); |
for(i=0; i<nCol; i++){ |
sqlite3_snprintf(sizeof(z),z,"Column %d %nname:", i, &x); |
utf8_printf(out, "%-36s %s\n", z, sqlite3_column_name(pStmt,i)); |
#ifndef SQLITE_OMIT_DECLTYPE |
sqlite3_snprintf(30, z+x, "declared type:"); |
utf8_printf(out, "%-36s %s\n", z, sqlite3_column_decltype(pStmt, i)); |
#endif |
#ifdef SQLITE_ENABLE_COLUMN_METADATA |
sqlite3_snprintf(30, z+x, "database name:"); |
utf8_printf(out, "%-36s %s\n", z, sqlite3_column_database_name(pStmt,i)); |
sqlite3_snprintf(30, z+x, "table name:"); |
utf8_printf(out, "%-36s %s\n", z, sqlite3_column_table_name(pStmt,i)); |
sqlite3_snprintf(30, z+x, "origin name:"); |
utf8_printf(out, "%-36s %s\n", z, sqlite3_column_origin_name(pStmt,i)); |
#endif |
} |
} |
|
if( pArg->statsOn==3 ){ |
if( pArg->pStmt ){ |
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_VM_STEP, bReset); |
raw_printf(pArg->out, "VM-steps: %d\n", iCur); |
} |
return 0; |
} |
|
displayStatLine(pArg, "Memory Used:", |
"%lld (max %lld) bytes", SQLITE_STATUS_MEMORY_USED, bReset); |
displayStatLine(pArg, "Number of Outstanding Allocations:", |
"%lld (max %lld)", SQLITE_STATUS_MALLOC_COUNT, bReset); |
if( pArg->shellFlgs & SHFLG_Pagecache ){ |
displayStatLine(pArg, "Number of Pcache Pages Used:", |
"%lld (max %lld) pages", SQLITE_STATUS_PAGECACHE_USED, bReset); |
} |
displayStatLine(pArg, "Number of Pcache Overflow Bytes:", |
"%lld (max %lld) bytes", SQLITE_STATUS_PAGECACHE_OVERFLOW, bReset); |
displayStatLine(pArg, "Largest Allocation:", |
"%lld bytes", SQLITE_STATUS_MALLOC_SIZE, bReset); |
displayStatLine(pArg, "Largest Pcache Allocation:", |
"%lld bytes", SQLITE_STATUS_PAGECACHE_SIZE, bReset); |
#ifdef YYTRACKMAXSTACKDEPTH |
displayStatLine(pArg, "Deepest Parser Stack:", |
"%lld (max %lld)", SQLITE_STATUS_PARSER_STACK, bReset); |
#endif |
|
if( db ){ |
if( pArg->shellFlgs & SHFLG_Lookaside ){ |
iHiwtr = iCur = -1; |
sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_USED, |
&iCur, &iHiwtr, bReset); |
raw_printf(pArg->out, |
"Lookaside Slots Used: %d (max %d)\n", |
iCur, iHiwtr); |
sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_HIT, |
&iCur, &iHiwtr, bReset); |
raw_printf(pArg->out, "Successful lookaside attempts: %d\n", |
iHiwtr); |
sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE, |
&iCur, &iHiwtr, bReset); |
raw_printf(pArg->out, "Lookaside failures due to size: %d\n", |
iHiwtr); |
sqlite3_db_status(db, SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL, |
&iCur, &iHiwtr, bReset); |
raw_printf(pArg->out, "Lookaside failures due to OOM: %d\n", |
iHiwtr); |
} |
iHiwtr = iCur = -1; |
sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_USED, &iCur, &iHiwtr, bReset); |
raw_printf(pArg->out, "Pager Heap Usage: %d bytes\n", |
iCur); |
iHiwtr = iCur = -1; |
sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_HIT, &iCur, &iHiwtr, 1); |
raw_printf(pArg->out, "Page cache hits: %d\n", iCur); |
iHiwtr = iCur = -1; |
sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_MISS, &iCur, &iHiwtr, 1); |
raw_printf(pArg->out, "Page cache misses: %d\n", iCur); |
iHiwtr = iCur = -1; |
sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_WRITE, &iCur, &iHiwtr, 1); |
raw_printf(pArg->out, "Page cache writes: %d\n", iCur); |
iHiwtr = iCur = -1; |
sqlite3_db_status(db, SQLITE_DBSTATUS_CACHE_SPILL, &iCur, &iHiwtr, 1); |
raw_printf(pArg->out, "Page cache spills: %d\n", iCur); |
iHiwtr = iCur = -1; |
sqlite3_db_status(db, SQLITE_DBSTATUS_SCHEMA_USED, &iCur, &iHiwtr, bReset); |
raw_printf(pArg->out, "Schema Heap Usage: %d bytes\n", |
iCur); |
iHiwtr = iCur = -1; |
sqlite3_db_status(db, SQLITE_DBSTATUS_STMT_USED, &iCur, &iHiwtr, bReset); |
raw_printf(pArg->out, "Statement Heap/Lookaside Usage: %d bytes\n", |
iCur); |
} |
|
if( pArg->pStmt ){ |
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_FULLSCAN_STEP, |
bReset); |
raw_printf(pArg->out, "Fullscan Steps: %d\n", iCur); |
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_SORT, bReset); |
raw_printf(pArg->out, "Sort Operations: %d\n", iCur); |
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_AUTOINDEX,bReset); |
raw_printf(pArg->out, "Autoindex Inserts: %d\n", iCur); |
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_VM_STEP, bReset); |
raw_printf(pArg->out, "Virtual Machine Steps: %d\n", iCur); |
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_REPREPARE,bReset); |
raw_printf(pArg->out, "Reprepare operations: %d\n", iCur); |
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_RUN, bReset); |
raw_printf(pArg->out, "Number of times run: %d\n", iCur); |
iCur = sqlite3_stmt_status(pArg->pStmt, SQLITE_STMTSTATUS_MEMUSED, bReset); |
raw_printf(pArg->out, "Memory used by prepared stmt: %d\n", iCur); |
} |
|
#ifdef __linux__ |
displayLinuxIoStats(pArg->out); |
#endif |
|
/* Do not remove this machine readable comment: extra-stats-output-here */ |
|
return 0; |
} |
|
/* |
** Display scan stats. |
*/ |
static void display_scanstats( |
sqlite3 *db, /* Database to query */ |
ShellState *pArg /* Pointer to ShellState */ |
){ |
#ifndef SQLITE_ENABLE_STMT_SCANSTATUS |
UNUSED_PARAMETER(db); |
UNUSED_PARAMETER(pArg); |
#else |
int i, k, n, mx; |
raw_printf(pArg->out, "-------- scanstats --------\n"); |
mx = 0; |
for(k=0; k<=mx; k++){ |
double rEstLoop = 1.0; |
for(i=n=0; 1; i++){ |
sqlite3_stmt *p = pArg->pStmt; |
sqlite3_int64 nLoop, nVisit; |
double rEst; |
int iSid; |
const char *zExplain; |
if( sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_NLOOP, (void*)&nLoop) ){ |
break; |
} |
sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_SELECTID, (void*)&iSid); |
if( iSid>mx ) mx = iSid; |
if( iSid!=k ) continue; |
if( n==0 ){ |
rEstLoop = (double)nLoop; |
if( k>0 ) raw_printf(pArg->out, "-------- subquery %d -------\n", k); |
} |
n++; |
sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_NVISIT, (void*)&nVisit); |
sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_EST, (void*)&rEst); |
sqlite3_stmt_scanstatus(p, i, SQLITE_SCANSTAT_EXPLAIN, (void*)&zExplain); |
utf8_printf(pArg->out, "Loop %2d: %s\n", n, zExplain); |
rEstLoop *= rEst; |
raw_printf(pArg->out, |
" nLoop=%-8lld nRow=%-8lld estRow=%-8lld estRow/Loop=%-8g\n", |
nLoop, nVisit, (sqlite3_int64)(rEstLoop+0.5), rEst |
); |
} |
} |
raw_printf(pArg->out, "---------------------------\n"); |
#endif |
} |
|
/* |
** Parameter azArray points to a zero-terminated array of strings. zStr |
** points to a single nul-terminated string. Return non-zero if zStr |
** is equal, according to strcmp(), to any of the strings in the array. |
** Otherwise, return zero. |
*/ |
static int str_in_array(const char *zStr, const char **azArray){ |
int i; |
for(i=0; azArray[i]; i++){ |
if( 0==strcmp(zStr, azArray[i]) ) return 1; |
} |
return 0; |
} |
|
/* |
** If compiled statement pSql appears to be an EXPLAIN statement, allocate |
** and populate the ShellState.aiIndent[] array with the number of |
** spaces each opcode should be indented before it is output. |
** |
** The indenting rules are: |
** |
** * For each "Next", "Prev", "VNext" or "VPrev" instruction, indent |
** all opcodes that occur between the p2 jump destination and the opcode |
** itself by 2 spaces. |
** |
** * For each "Goto", if the jump destination is earlier in the program |
** and ends on one of: |
** Yield SeekGt SeekLt RowSetRead Rewind |
** or if the P1 parameter is one instead of zero, |
** then indent all opcodes between the earlier instruction |
** and "Goto" by 2 spaces. |
*/ |
static void explain_data_prepare(ShellState *p, sqlite3_stmt *pSql){ |
const char *zSql; /* The text of the SQL statement */ |
const char *z; /* Used to check if this is an EXPLAIN */ |
int *abYield = 0; /* True if op is an OP_Yield */ |
int nAlloc = 0; /* Allocated size of p->aiIndent[], abYield */ |
int iOp; /* Index of operation in p->aiIndent[] */ |
|
const char *azNext[] = { "Next", "Prev", "VPrev", "VNext", "SorterNext", 0 }; |
const char *azYield[] = { "Yield", "SeekLT", "SeekGT", "RowSetRead", |
"Rewind", 0 }; |
const char *azGoto[] = { "Goto", 0 }; |
|
/* Try to figure out if this is really an EXPLAIN statement. If this |
** cannot be verified, return early. */ |
if( sqlite3_column_count(pSql)!=8 ){ |
p->cMode = p->mode; |
return; |
} |
zSql = sqlite3_sql(pSql); |
if( zSql==0 ) return; |
for(z=zSql; *z==' ' || *z=='\t' || *z=='\n' || *z=='\f' || *z=='\r'; z++); |
if( sqlite3_strnicmp(z, "explain", 7) ){ |
p->cMode = p->mode; |
return; |
} |
|
for(iOp=0; SQLITE_ROW==sqlite3_step(pSql); iOp++){ |
int i; |
int iAddr = sqlite3_column_int(pSql, 0); |
const char *zOp = (const char*)sqlite3_column_text(pSql, 1); |
|
/* Set p2 to the P2 field of the current opcode. Then, assuming that |
** p2 is an instruction address, set variable p2op to the index of that |
** instruction in the aiIndent[] array. p2 and p2op may be different if |
** the current instruction is part of a sub-program generated by an |
** SQL trigger or foreign key. */ |
int p2 = sqlite3_column_int(pSql, 3); |
int p2op = (p2 + (iOp-iAddr)); |
|
/* Grow the p->aiIndent array as required */ |
if( iOp>=nAlloc ){ |
if( iOp==0 ){ |
/* Do further verfication that this is explain output. Abort if |
** it is not */ |
static const char *explainCols[] = { |
"addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment" }; |
int jj; |
for(jj=0; jj<ArraySize(explainCols); jj++){ |
if( strcmp(sqlite3_column_name(pSql,jj),explainCols[jj])!=0 ){ |
p->cMode = p->mode; |
sqlite3_reset(pSql); |
return; |
} |
} |
} |
nAlloc += 100; |
p->aiIndent = (int*)sqlite3_realloc64(p->aiIndent, nAlloc*sizeof(int)); |
if( p->aiIndent==0 ) shell_out_of_memory(); |
abYield = (int*)sqlite3_realloc64(abYield, nAlloc*sizeof(int)); |
if( abYield==0 ) shell_out_of_memory(); |
} |
abYield[iOp] = str_in_array(zOp, azYield); |
p->aiIndent[iOp] = 0; |
p->nIndent = iOp+1; |
|
if( str_in_array(zOp, azNext) ){ |
for(i=p2op; i<iOp; i++) p->aiIndent[i] += 2; |
} |
if( str_in_array(zOp, azGoto) && p2op<p->nIndent |
&& (abYield[p2op] || sqlite3_column_int(pSql, 2)) |
){ |
for(i=p2op; i<iOp; i++) p->aiIndent[i] += 2; |
} |
} |
|
p->iIndent = 0; |
sqlite3_free(abYield); |
sqlite3_reset(pSql); |
} |
|
/* |
** Free the array allocated by explain_data_prepare(). |
*/ |
static void explain_data_delete(ShellState *p){ |
sqlite3_free(p->aiIndent); |
p->aiIndent = 0; |
p->nIndent = 0; |
p->iIndent = 0; |
} |
|
/* |
** Disable and restore .wheretrace and .selecttrace settings. |
*/ |
static unsigned int savedSelectTrace; |
static unsigned int savedWhereTrace; |
static void disable_debug_trace_modes(void){ |
unsigned int zero = 0; |
sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, 0, &savedSelectTrace); |
sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, 1, &zero); |
sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, 2, &savedWhereTrace); |
sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, 3, &zero); |
} |
static void restore_debug_trace_modes(void){ |
sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, 1, &savedSelectTrace); |
sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, 3, &savedWhereTrace); |
} |
|
/* Create the TEMP table used to store parameter bindings */ |
static void bind_table_init(ShellState *p){ |
int wrSchema = 0; |
int defensiveMode = 0; |
sqlite3_db_config(p->db, SQLITE_DBCONFIG_DEFENSIVE, -1, &defensiveMode); |
sqlite3_db_config(p->db, SQLITE_DBCONFIG_DEFENSIVE, 0, 0); |
sqlite3_db_config(p->db, SQLITE_DBCONFIG_WRITABLE_SCHEMA, -1, &wrSchema); |
sqlite3_db_config(p->db, SQLITE_DBCONFIG_WRITABLE_SCHEMA, 1, 0); |
sqlite3_exec(p->db, |
"CREATE TABLE IF NOT EXISTS temp.sqlite_parameters(\n" |
" key TEXT PRIMARY KEY,\n" |
" value ANY\n" |
") WITHOUT ROWID;", |
0, 0, 0); |
sqlite3_db_config(p->db, SQLITE_DBCONFIG_WRITABLE_SCHEMA, wrSchema, 0); |
sqlite3_db_config(p->db, SQLITE_DBCONFIG_DEFENSIVE, defensiveMode, 0); |
} |
|
/* |
** Bind parameters on a prepared statement. |
** |
** Parameter bindings are taken from a TEMP table of the form: |
** |
** CREATE TEMP TABLE sqlite_parameters(key TEXT PRIMARY KEY, value) |
** WITHOUT ROWID; |
** |
** No bindings occur if this table does not exist. The name of the table |
** begins with "sqlite_" so that it will not collide with ordinary application |
** tables. The table must be in the TEMP schema. |
*/ |
static void bind_prepared_stmt(ShellState *pArg, sqlite3_stmt *pStmt){ |
int nVar; |
int i; |
int rc; |
sqlite3_stmt *pQ = 0; |
|
nVar = sqlite3_bind_parameter_count(pStmt); |
if( nVar==0 ) return; /* Nothing to do */ |
if( sqlite3_table_column_metadata(pArg->db, "TEMP", "sqlite_parameters", |
"key", 0, 0, 0, 0, 0)!=SQLITE_OK ){ |
return; /* Parameter table does not exist */ |
} |
rc = sqlite3_prepare_v2(pArg->db, |
"SELECT value FROM temp.sqlite_parameters" |
" WHERE key=?1", -1, &pQ, 0); |
if( rc || pQ==0 ) return; |
for(i=1; i<=nVar; i++){ |
char zNum[30]; |
const char *zVar = sqlite3_bind_parameter_name(pStmt, i); |
if( zVar==0 ){ |
sqlite3_snprintf(sizeof(zNum),zNum,"?%d",i); |
zVar = zNum; |
} |
sqlite3_bind_text(pQ, 1, zVar, -1, SQLITE_STATIC); |
if( sqlite3_step(pQ)==SQLITE_ROW ){ |
sqlite3_bind_value(pStmt, i, sqlite3_column_value(pQ, 0)); |
}else{ |
sqlite3_bind_null(pStmt, i); |
} |
sqlite3_reset(pQ); |
} |
sqlite3_finalize(pQ); |
} |
|
/* |
** UTF8 box-drawing characters. Imagine box lines like this: |
** |
** 1 |
** | |
** 4 --+-- 2 |
** | |
** 3 |
** |
** Each box characters has between 2 and 4 of the lines leading from |
** the center. The characters are here identified by the numbers of |
** their corresponding lines. |
*/ |
#define BOX_24 "\342\224\200" /* U+2500 --- */ |
#define BOX_13 "\342\224\202" /* U+2502 | */ |
#define BOX_23 "\342\224\214" /* U+250c ,- */ |
#define BOX_34 "\342\224\220" /* U+2510 -, */ |
#define BOX_12 "\342\224\224" /* U+2514 '- */ |
#define BOX_14 "\342\224\230" /* U+2518 -' */ |
#define BOX_123 "\342\224\234" /* U+251c |- */ |
#define BOX_134 "\342\224\244" /* U+2524 -| */ |
#define BOX_234 "\342\224\254" /* U+252c -,- */ |
#define BOX_124 "\342\224\264" /* U+2534 -'- */ |
#define BOX_1234 "\342\224\274" /* U+253c -|- */ |
|
/* Draw horizontal line N characters long using unicode box |
** characters |
*/ |
static void print_box_line(FILE *out, int N){ |
const char zDash[] = |
BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 |
BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24 BOX_24; |
const int nDash = sizeof(zDash) - 1; |
N *= 3; |
while( N>nDash ){ |
utf8_printf(out, zDash); |
N -= nDash; |
} |
utf8_printf(out, "%.*s", N, zDash); |
} |
|
/* |
** Draw a horizontal separator for a MODE_Box table. |
*/ |
static void print_box_row_separator( |
ShellState *p, |
int nArg, |
const char *zSep1, |
const char *zSep2, |
const char *zSep3 |
){ |
int i; |
if( nArg>0 ){ |
utf8_printf(p->out, "%s", zSep1); |
print_box_line(p->out, p->actualWidth[0]+2); |
for(i=1; i<nArg; i++){ |
utf8_printf(p->out, "%s", zSep2); |
print_box_line(p->out, p->actualWidth[i]+2); |
} |
utf8_printf(p->out, "%s", zSep3); |
} |
fputs("\n", p->out); |
} |
|
|
|
/* |
** Run a prepared statement and output the result in one of the |
** table-oriented formats: MODE_Column, MODE_Markdown, MODE_Table, |
** or MODE_Box. |
** |
** This is different from ordinary exec_prepared_stmt() in that |
** it has to run the entire query and gather the results into memory |
** first, in order to determine column widths, before providing |
** any output. |
*/ |
static void exec_prepared_stmt_columnar( |
ShellState *p, /* Pointer to ShellState */ |
sqlite3_stmt *pStmt /* Statment to run */ |
){ |
sqlite3_int64 nRow = 0; |
int nColumn = 0; |
char **azData = 0; |
sqlite3_int64 nAlloc = 0; |
const char *z; |
int rc; |
sqlite3_int64 i, nData; |
int j, nTotal, w, n; |
const char *colSep = 0; |
const char *rowSep = 0; |
|
rc = sqlite3_step(pStmt); |
if( rc!=SQLITE_ROW ) return; |
nColumn = sqlite3_column_count(pStmt); |
nAlloc = nColumn*4; |
if( nAlloc<=0 ) nAlloc = 1; |
azData = sqlite3_malloc64( nAlloc*sizeof(char*) ); |
if( azData==0 ) shell_out_of_memory(); |
for(i=0; i<nColumn; i++){ |
azData[i] = strdup(sqlite3_column_name(pStmt,i)); |
} |
do{ |
if( (nRow+2)*nColumn >= nAlloc ){ |
nAlloc *= 2; |
azData = sqlite3_realloc64(azData, nAlloc*sizeof(char*)); |
if( azData==0 ) shell_out_of_memory(); |
} |
nRow++; |
for(i=0; i<nColumn; i++){ |
z = (const char*)sqlite3_column_text(pStmt,i); |
azData[nRow*nColumn + i] = z ? strdup(z) : 0; |
} |
}while( (rc = sqlite3_step(pStmt))==SQLITE_ROW ); |
if( nColumn>p->nWidth ){ |
p->colWidth = realloc(p->colWidth, nColumn*2*sizeof(int)); |
if( p->colWidth==0 ) shell_out_of_memory(); |
for(i=p->nWidth; i<nColumn; i++) p->colWidth[i] = 0; |
p->nWidth = nColumn; |
p->actualWidth = &p->colWidth[nColumn]; |
} |
memset(p->actualWidth, 0, nColumn*sizeof(int)); |
for(i=0; i<nColumn; i++){ |
w = p->colWidth[i]; |
if( w<0 ) w = -w; |
p->actualWidth[i] = w; |
} |
nTotal = nColumn*(nRow+1); |
for(i=0; i<nTotal; i++){ |
z = azData[i]; |
if( z==0 ) z = p->nullValue; |
n = strlenChar(z); |
j = i%nColumn; |
if( n>p->actualWidth[j] ) p->actualWidth[j] = n; |
} |
if( seenInterrupt ) goto columnar_end; |
if( nColumn==0 ) goto columnar_end; |
switch( p->cMode ){ |
case MODE_Column: { |
colSep = " "; |
rowSep = "\n"; |
if( p->showHeader ){ |
for(i=0; i<nColumn; i++){ |
w = p->actualWidth[i]; |
if( p->colWidth[i]<0 ) w = -w; |
utf8_width_print(p->out, w, azData[i]); |
fputs(i==nColumn-1?"\n":" ", p->out); |
} |
for(i=0; i<nColumn; i++){ |
print_dashes(p->out, p->actualWidth[i]); |
fputs(i==nColumn-1?"\n":" ", p->out); |
} |
} |
break; |
} |
case MODE_Table: { |
colSep = " | "; |
rowSep = " |\n"; |
print_row_separator(p, nColumn, "+"); |
fputs("| ", p->out); |
for(i=0; i<nColumn; i++){ |
w = p->actualWidth[i]; |
n = strlenChar(azData[i]); |
utf8_printf(p->out, "%*s%s%*s", (w-n)/2, "", azData[i], (w-n+1)/2, ""); |
fputs(i==nColumn-1?" |\n":" | ", p->out); |
} |
print_row_separator(p, nColumn, "+"); |
break; |
} |
case MODE_Markdown: { |
colSep = " | "; |
rowSep = " |\n"; |
fputs("| ", p->out); |
for(i=0; i<nColumn; i++){ |
w = p->actualWidth[i]; |
n = strlenChar(azData[i]); |
utf8_printf(p->out, "%*s%s%*s", (w-n)/2, "", azData[i], (w-n+1)/2, ""); |
fputs(i==nColumn-1?" |\n":" | ", p->out); |
} |
print_row_separator(p, nColumn, "|"); |
break; |
} |
case MODE_Box: { |
colSep = " " BOX_13 " "; |
rowSep = " " BOX_13 "\n"; |
print_box_row_separator(p, nColumn, BOX_23, BOX_234, BOX_34); |
utf8_printf(p->out, BOX_13 " "); |
for(i=0; i<nColumn; i++){ |
w = p->actualWidth[i]; |
n = strlenChar(azData[i]); |
utf8_printf(p->out, "%*s%s%*s%s", |
(w-n)/2, "", azData[i], (w-n+1)/2, "", |
i==nColumn-1?" "BOX_13"\n":" "BOX_13" "); |
} |
print_box_row_separator(p, nColumn, BOX_123, BOX_1234, BOX_134); |
break; |
} |
} |
for(i=nColumn, j=0; i<nTotal; i++, j++){ |
if( j==0 && p->cMode!=MODE_Column ){ |
utf8_printf(p->out, "%s", p->cMode==MODE_Box?BOX_13" ":"| "); |
} |
z = azData[i]; |
if( z==0 ) z = p->nullValue; |
w = p->actualWidth[j]; |
if( p->colWidth[j]<0 ) w = -w; |
utf8_width_print(p->out, w, z); |
if( j==nColumn-1 ){ |
utf8_printf(p->out, "%s", rowSep); |
j = -1; |
if( seenInterrupt ) goto columnar_end; |
}else{ |
utf8_printf(p->out, "%s", colSep); |
} |
} |
if( p->cMode==MODE_Table ){ |
print_row_separator(p, nColumn, "+"); |
}else if( p->cMode==MODE_Box ){ |
print_box_row_separator(p, nColumn, BOX_12, BOX_124, BOX_14); |
} |
columnar_end: |
if( seenInterrupt ){ |
utf8_printf(p->out, "Interrupt\n"); |
} |
nData = (nRow+1)*nColumn; |
for(i=0; i<nData; i++) free(azData[i]); |
sqlite3_free(azData); |
} |
|
/* |
** Run a prepared statement |
*/ |
static void exec_prepared_stmt( |
ShellState *pArg, /* Pointer to ShellState */ |
sqlite3_stmt *pStmt /* Statment to run */ |
){ |
int rc; |
|
if( pArg->cMode==MODE_Column |
|| pArg->cMode==MODE_Table |
|| pArg->cMode==MODE_Box |
|| pArg->cMode==MODE_Markdown |
){ |
exec_prepared_stmt_columnar(pArg, pStmt); |
return; |
} |
|
/* perform the first step. this will tell us if we |
** have a result set or not and how wide it is. |
*/ |
rc = sqlite3_step(pStmt); |
/* if we have a result set... */ |
if( SQLITE_ROW == rc ){ |
/* allocate space for col name ptr, value ptr, and type */ |
int nCol = sqlite3_column_count(pStmt); |
void *pData = sqlite3_malloc64(3*nCol*sizeof(const char*) + 1); |
if( !pData ){ |
rc = SQLITE_NOMEM; |
}else{ |
char **azCols = (char **)pData; /* Names of result columns */ |
char **azVals = &azCols[nCol]; /* Results */ |
int *aiTypes = (int *)&azVals[nCol]; /* Result types */ |
int i, x; |
assert(sizeof(int) <= sizeof(char *)); |
/* save off ptrs to column names */ |
for(i=0; i<nCol; i++){ |
azCols[i] = (char *)sqlite3_column_name(pStmt, i); |
} |
do{ |
/* extract the data and data types */ |
for(i=0; i<nCol; i++){ |
aiTypes[i] = x = sqlite3_column_type(pStmt, i); |
if( x==SQLITE_BLOB && pArg && pArg->cMode==MODE_Insert ){ |
azVals[i] = ""; |
}else{ |
azVals[i] = (char*)sqlite3_column_text(pStmt, i); |
} |
if( !azVals[i] && (aiTypes[i]!=SQLITE_NULL) ){ |
rc = SQLITE_NOMEM; |
break; /* from for */ |
} |
} /* end for */ |
|
/* if data and types extracted successfully... */ |
if( SQLITE_ROW == rc ){ |
/* call the supplied callback with the result row data */ |
if( shell_callback(pArg, nCol, azVals, azCols, aiTypes) ){ |
rc = SQLITE_ABORT; |
}else{ |
rc = sqlite3_step(pStmt); |
} |
} |
} while( SQLITE_ROW == rc ); |
sqlite3_free(pData); |
if( pArg->cMode==MODE_Json ){ |
fputs("]\n", pArg->out); |
} |
} |
} |
} |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
/* |
** This function is called to process SQL if the previous shell command |
** was ".expert". It passes the SQL in the second argument directly to |
** the sqlite3expert object. |
** |
** If successful, SQLITE_OK is returned. Otherwise, an SQLite error |
** code. In this case, (*pzErr) may be set to point to a buffer containing |
** an English language error message. It is the responsibility of the |
** caller to eventually free this buffer using sqlite3_free(). |
*/ |
static int expertHandleSQL( |
ShellState *pState, |
const char *zSql, |
char **pzErr |
){ |
assert( pState->expert.pExpert ); |
assert( pzErr==0 || *pzErr==0 ); |
return sqlite3_expert_sql(pState->expert.pExpert, zSql, pzErr); |
} |
|
/* |
** This function is called either to silently clean up the object |
** created by the ".expert" command (if bCancel==1), or to generate a |
** report from it and then clean it up (if bCancel==0). |
** |
** If successful, SQLITE_OK is returned. Otherwise, an SQLite error |
** code. In this case, (*pzErr) may be set to point to a buffer containing |
** an English language error message. It is the responsibility of the |
** caller to eventually free this buffer using sqlite3_free(). |
*/ |
static int expertFinish( |
ShellState *pState, |
int bCancel, |
char **pzErr |
){ |
int rc = SQLITE_OK; |
sqlite3expert *p = pState->expert.pExpert; |
assert( p ); |
assert( bCancel || pzErr==0 || *pzErr==0 ); |
if( bCancel==0 ){ |
FILE *out = pState->out; |
int bVerbose = pState->expert.bVerbose; |
|
rc = sqlite3_expert_analyze(p, pzErr); |
if( rc==SQLITE_OK ){ |
int nQuery = sqlite3_expert_count(p); |
int i; |
|
if( bVerbose ){ |
const char *zCand = sqlite3_expert_report(p,0,EXPERT_REPORT_CANDIDATES); |
raw_printf(out, "-- Candidates -----------------------------\n"); |
raw_printf(out, "%s\n", zCand); |
} |
for(i=0; i<nQuery; i++){ |
const char *zSql = sqlite3_expert_report(p, i, EXPERT_REPORT_SQL); |
const char *zIdx = sqlite3_expert_report(p, i, EXPERT_REPORT_INDEXES); |
const char *zEQP = sqlite3_expert_report(p, i, EXPERT_REPORT_PLAN); |
if( zIdx==0 ) zIdx = "(no new indexes)\n"; |
if( bVerbose ){ |
raw_printf(out, "-- Query %d --------------------------------\n",i+1); |
raw_printf(out, "%s\n\n", zSql); |
} |
raw_printf(out, "%s\n", zIdx); |
raw_printf(out, "%s\n", zEQP); |
} |
} |
} |
sqlite3_expert_destroy(p); |
pState->expert.pExpert = 0; |
return rc; |
} |
|
/* |
** Implementation of ".expert" dot command. |
*/ |
static int expertDotCommand( |
ShellState *pState, /* Current shell tool state */ |
char **azArg, /* Array of arguments passed to dot command */ |
int nArg /* Number of entries in azArg[] */ |
){ |
int rc = SQLITE_OK; |
char *zErr = 0; |
int i; |
int iSample = 0; |
|
assert( pState->expert.pExpert==0 ); |
memset(&pState->expert, 0, sizeof(ExpertInfo)); |
|
for(i=1; rc==SQLITE_OK && i<nArg; i++){ |
char *z = azArg[i]; |
int n; |
if( z[0]=='-' && z[1]=='-' ) z++; |
n = strlen30(z); |
if( n>=2 && 0==strncmp(z, "-verbose", n) ){ |
pState->expert.bVerbose = 1; |
} |
else if( n>=2 && 0==strncmp(z, "-sample", n) ){ |
if( i==(nArg-1) ){ |
raw_printf(stderr, "option requires an argument: %s\n", z); |
rc = SQLITE_ERROR; |
}else{ |
iSample = (int)integerValue(azArg[++i]); |
if( iSample<0 || iSample>100 ){ |
raw_printf(stderr, "value out of range: %s\n", azArg[i]); |
rc = SQLITE_ERROR; |
} |
} |
} |
else{ |
raw_printf(stderr, "unknown option: %s\n", z); |
rc = SQLITE_ERROR; |
} |
} |
|
if( rc==SQLITE_OK ){ |
pState->expert.pExpert = sqlite3_expert_new(pState->db, &zErr); |
if( pState->expert.pExpert==0 ){ |
raw_printf(stderr, "sqlite3_expert_new: %s\n", zErr); |
rc = SQLITE_ERROR; |
}else{ |
sqlite3_expert_config( |
pState->expert.pExpert, EXPERT_CONFIG_SAMPLE, iSample |
); |
} |
} |
|
return rc; |
} |
#endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */ |
|
/* |
** Execute a statement or set of statements. Print |
** any result rows/columns depending on the current mode |
** set via the supplied callback. |
** |
** This is very similar to SQLite's built-in sqlite3_exec() |
** function except it takes a slightly different callback |
** and callback data argument. |
*/ |
static int shell_exec( |
ShellState *pArg, /* Pointer to ShellState */ |
const char *zSql, /* SQL to be evaluated */ |
char **pzErrMsg /* Error msg written here */ |
){ |
sqlite3_stmt *pStmt = NULL; /* Statement to execute. */ |
int rc = SQLITE_OK; /* Return Code */ |
int rc2; |
const char *zLeftover; /* Tail of unprocessed SQL */ |
sqlite3 *db = pArg->db; |
|
if( pzErrMsg ){ |
*pzErrMsg = NULL; |
} |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
if( pArg->expert.pExpert ){ |
rc = expertHandleSQL(pArg, zSql, pzErrMsg); |
return expertFinish(pArg, (rc!=SQLITE_OK), pzErrMsg); |
} |
#endif |
|
while( zSql[0] && (SQLITE_OK == rc) ){ |
static const char *zStmtSql; |
rc = sqlite3_prepare_v2(db, zSql, -1, &pStmt, &zLeftover); |
if( SQLITE_OK != rc ){ |
if( pzErrMsg ){ |
*pzErrMsg = save_err_msg(db); |
} |
}else{ |
if( !pStmt ){ |
/* this happens for a comment or white-space */ |
zSql = zLeftover; |
while( IsSpace(zSql[0]) ) zSql++; |
continue; |
} |
zStmtSql = sqlite3_sql(pStmt); |
if( zStmtSql==0 ) zStmtSql = ""; |
while( IsSpace(zStmtSql[0]) ) zStmtSql++; |
|
/* save off the prepared statment handle and reset row count */ |
if( pArg ){ |
pArg->pStmt = pStmt; |
pArg->cnt = 0; |
} |
|
/* echo the sql statement if echo on */ |
if( pArg && ShellHasFlag(pArg, SHFLG_Echo) ){ |
utf8_printf(pArg->out, "%s\n", zStmtSql ? zStmtSql : zSql); |
} |
|
/* Show the EXPLAIN QUERY PLAN if .eqp is on */ |
if( pArg && pArg->autoEQP && sqlite3_stmt_isexplain(pStmt)==0 ){ |
sqlite3_stmt *pExplain; |
char *zEQP; |
int triggerEQP = 0; |
disable_debug_trace_modes(); |
sqlite3_db_config(db, SQLITE_DBCONFIG_TRIGGER_EQP, -1, &triggerEQP); |
if( pArg->autoEQP>=AUTOEQP_trigger ){ |
sqlite3_db_config(db, SQLITE_DBCONFIG_TRIGGER_EQP, 1, 0); |
} |
zEQP = sqlite3_mprintf("EXPLAIN QUERY PLAN %s", zStmtSql); |
rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0); |
if( rc==SQLITE_OK ){ |
while( sqlite3_step(pExplain)==SQLITE_ROW ){ |
const char *zEQPLine = (const char*)sqlite3_column_text(pExplain,3); |
int iEqpId = sqlite3_column_int(pExplain, 0); |
int iParentId = sqlite3_column_int(pExplain, 1); |
if( zEQPLine==0 ) zEQPLine = ""; |
if( zEQPLine[0]=='-' ) eqp_render(pArg); |
eqp_append(pArg, iEqpId, iParentId, zEQPLine); |
} |
eqp_render(pArg); |
} |
sqlite3_finalize(pExplain); |
sqlite3_free(zEQP); |
if( pArg->autoEQP>=AUTOEQP_full ){ |
/* Also do an EXPLAIN for ".eqp full" mode */ |
zEQP = sqlite3_mprintf("EXPLAIN %s", zStmtSql); |
rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0); |
if( rc==SQLITE_OK ){ |
pArg->cMode = MODE_Explain; |
explain_data_prepare(pArg, pExplain); |
exec_prepared_stmt(pArg, pExplain); |
explain_data_delete(pArg); |
} |
sqlite3_finalize(pExplain); |
sqlite3_free(zEQP); |
} |
if( pArg->autoEQP>=AUTOEQP_trigger && triggerEQP==0 ){ |
sqlite3_db_config(db, SQLITE_DBCONFIG_TRIGGER_EQP, 0, 0); |
/* Reprepare pStmt before reactiving trace modes */ |
sqlite3_finalize(pStmt); |
sqlite3_prepare_v2(db, zSql, -1, &pStmt, 0); |
if( pArg ) pArg->pStmt = pStmt; |
} |
restore_debug_trace_modes(); |
} |
|
if( pArg ){ |
pArg->cMode = pArg->mode; |
if( pArg->autoExplain ){ |
if( sqlite3_stmt_isexplain(pStmt)==1 ){ |
pArg->cMode = MODE_Explain; |
} |
if( sqlite3_stmt_isexplain(pStmt)==2 ){ |
pArg->cMode = MODE_EQP; |
} |
} |
|
/* If the shell is currently in ".explain" mode, gather the extra |
** data required to add indents to the output.*/ |
if( pArg->cMode==MODE_Explain ){ |
explain_data_prepare(pArg, pStmt); |
} |
} |
|
bind_prepared_stmt(pArg, pStmt); |
exec_prepared_stmt(pArg, pStmt); |
explain_data_delete(pArg); |
eqp_render(pArg); |
|
/* print usage stats if stats on */ |
if( pArg && pArg->statsOn ){ |
display_stats(db, pArg, 0); |
} |
|
/* print loop-counters if required */ |
if( pArg && pArg->scanstatsOn ){ |
display_scanstats(db, pArg); |
} |
|
/* Finalize the statement just executed. If this fails, save a |
** copy of the error message. Otherwise, set zSql to point to the |
** next statement to execute. */ |
rc2 = sqlite3_finalize(pStmt); |
if( rc!=SQLITE_NOMEM ) rc = rc2; |
if( rc==SQLITE_OK ){ |
zSql = zLeftover; |
while( IsSpace(zSql[0]) ) zSql++; |
}else if( pzErrMsg ){ |
*pzErrMsg = save_err_msg(db); |
} |
|
/* clear saved stmt handle */ |
if( pArg ){ |
pArg->pStmt = NULL; |
} |
} |
} /* end while */ |
|
return rc; |
} |
|
/* |
** Release memory previously allocated by tableColumnList(). |
*/ |
static void freeColumnList(char **azCol){ |
int i; |
for(i=1; azCol[i]; i++){ |
sqlite3_free(azCol[i]); |
} |
/* azCol[0] is a static string */ |
sqlite3_free(azCol); |
} |
|
/* |
** Return a list of pointers to strings which are the names of all |
** columns in table zTab. The memory to hold the names is dynamically |
** allocated and must be released by the caller using a subsequent call |
** to freeColumnList(). |
** |
** The azCol[0] entry is usually NULL. However, if zTab contains a rowid |
** value that needs to be preserved, then azCol[0] is filled in with the |
** name of the rowid column. |
** |
** The first regular column in the table is azCol[1]. The list is terminated |
** by an entry with azCol[i]==0. |
*/ |
static char **tableColumnList(ShellState *p, const char *zTab){ |
char **azCol = 0; |
sqlite3_stmt *pStmt; |
char *zSql; |
int nCol = 0; |
int nAlloc = 0; |
int nPK = 0; /* Number of PRIMARY KEY columns seen */ |
int isIPK = 0; /* True if one PRIMARY KEY column of type INTEGER */ |
int preserveRowid = ShellHasFlag(p, SHFLG_PreserveRowid); |
int rc; |
|
zSql = sqlite3_mprintf("PRAGMA table_info=%Q", zTab); |
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
if( rc ) return 0; |
while( sqlite3_step(pStmt)==SQLITE_ROW ){ |
if( nCol>=nAlloc-2 ){ |
nAlloc = nAlloc*2 + nCol + 10; |
azCol = sqlite3_realloc(azCol, nAlloc*sizeof(azCol[0])); |
if( azCol==0 ) shell_out_of_memory(); |
} |
azCol[++nCol] = sqlite3_mprintf("%s", sqlite3_column_text(pStmt, 1)); |
if( sqlite3_column_int(pStmt, 5) ){ |
nPK++; |
if( nPK==1 |
&& sqlite3_stricmp((const char*)sqlite3_column_text(pStmt,2), |
"INTEGER")==0 |
){ |
isIPK = 1; |
}else{ |
isIPK = 0; |
} |
} |
} |
sqlite3_finalize(pStmt); |
if( azCol==0 ) return 0; |
azCol[0] = 0; |
azCol[nCol+1] = 0; |
|
/* The decision of whether or not a rowid really needs to be preserved |
** is tricky. We never need to preserve a rowid for a WITHOUT ROWID table |
** or a table with an INTEGER PRIMARY KEY. We are unable to preserve |
** rowids on tables where the rowid is inaccessible because there are other |
** columns in the table named "rowid", "_rowid_", and "oid". |
*/ |
if( preserveRowid && isIPK ){ |
/* If a single PRIMARY KEY column with type INTEGER was seen, then it |
** might be an alise for the ROWID. But it might also be a WITHOUT ROWID |
** table or a INTEGER PRIMARY KEY DESC column, neither of which are |
** ROWID aliases. To distinguish these cases, check to see if |
** there is a "pk" entry in "PRAGMA index_list". There will be |
** no "pk" index if the PRIMARY KEY really is an alias for the ROWID. |
*/ |
zSql = sqlite3_mprintf("SELECT 1 FROM pragma_index_list(%Q)" |
" WHERE origin='pk'", zTab); |
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
if( rc ){ |
freeColumnList(azCol); |
return 0; |
} |
rc = sqlite3_step(pStmt); |
sqlite3_finalize(pStmt); |
preserveRowid = rc==SQLITE_ROW; |
} |
if( preserveRowid ){ |
/* Only preserve the rowid if we can find a name to use for the |
** rowid */ |
static char *azRowid[] = { "rowid", "_rowid_", "oid" }; |
int i, j; |
for(j=0; j<3; j++){ |
for(i=1; i<=nCol; i++){ |
if( sqlite3_stricmp(azRowid[j],azCol[i])==0 ) break; |
} |
if( i>nCol ){ |
/* At this point, we know that azRowid[j] is not the name of any |
** ordinary column in the table. Verify that azRowid[j] is a valid |
** name for the rowid before adding it to azCol[0]. WITHOUT ROWID |
** tables will fail this last check */ |
rc = sqlite3_table_column_metadata(p->db,0,zTab,azRowid[j],0,0,0,0,0); |
if( rc==SQLITE_OK ) azCol[0] = azRowid[j]; |
break; |
} |
} |
} |
return azCol; |
} |
|
/* |
** Toggle the reverse_unordered_selects setting. |
*/ |
static void toggleSelectOrder(sqlite3 *db){ |
sqlite3_stmt *pStmt = 0; |
int iSetting = 0; |
char zStmt[100]; |
sqlite3_prepare_v2(db, "PRAGMA reverse_unordered_selects", -1, &pStmt, 0); |
if( sqlite3_step(pStmt)==SQLITE_ROW ){ |
iSetting = sqlite3_column_int(pStmt, 0); |
} |
sqlite3_finalize(pStmt); |
sqlite3_snprintf(sizeof(zStmt), zStmt, |
"PRAGMA reverse_unordered_selects(%d)", !iSetting); |
sqlite3_exec(db, zStmt, 0, 0, 0); |
} |
|
/* |
** This is a different callback routine used for dumping the database. |
** Each row received by this callback consists of a table name, |
** the table type ("index" or "table") and SQL to create the table. |
** This routine should print text sufficient to recreate the table. |
*/ |
static int dump_callback(void *pArg, int nArg, char **azArg, char **azNotUsed){ |
int rc; |
const char *zTable; |
const char *zType; |
const char *zSql; |
ShellState *p = (ShellState *)pArg; |
int dataOnly; |
int noSys; |
|
UNUSED_PARAMETER(azNotUsed); |
if( nArg!=3 || azArg==0 ) return 0; |
zTable = azArg[0]; |
zType = azArg[1]; |
zSql = azArg[2]; |
dataOnly = (p->shellFlgs & SHFLG_DumpDataOnly)!=0; |
noSys = (p->shellFlgs & SHFLG_DumpNoSys)!=0; |
|
if( strcmp(zTable, "sqlite_sequence")==0 && !noSys ){ |
if( !dataOnly ) raw_printf(p->out, "DELETE FROM sqlite_sequence;\n"); |
}else if( sqlite3_strglob("sqlite_stat?", zTable)==0 && !noSys ){ |
if( !dataOnly ) raw_printf(p->out, "ANALYZE sqlite_schema;\n"); |
}else if( strncmp(zTable, "sqlite_", 7)==0 ){ |
return 0; |
}else if( dataOnly ){ |
/* no-op */ |
}else if( strncmp(zSql, "CREATE VIRTUAL TABLE", 20)==0 ){ |
char *zIns; |
if( !p->writableSchema ){ |
raw_printf(p->out, "PRAGMA writable_schema=ON;\n"); |
p->writableSchema = 1; |
} |
zIns = sqlite3_mprintf( |
"INSERT INTO sqlite_schema(type,name,tbl_name,rootpage,sql)" |
"VALUES('table','%q','%q',0,'%q');", |
zTable, zTable, zSql); |
utf8_printf(p->out, "%s\n", zIns); |
sqlite3_free(zIns); |
return 0; |
}else{ |
printSchemaLine(p->out, zSql, ";\n"); |
} |
|
if( strcmp(zType, "table")==0 ){ |
ShellText sSelect; |
ShellText sTable; |
char **azCol; |
int i; |
char *savedDestTable; |
int savedMode; |
|
azCol = tableColumnList(p, zTable); |
if( azCol==0 ){ |
p->nErr++; |
return 0; |
} |
|
/* Always quote the table name, even if it appears to be pure ascii, |
** in case it is a keyword. Ex: INSERT INTO "table" ... */ |
initText(&sTable); |
appendText(&sTable, zTable, quoteChar(zTable)); |
/* If preserving the rowid, add a column list after the table name. |
** In other words: "INSERT INTO tab(rowid,a,b,c,...) VALUES(...)" |
** instead of the usual "INSERT INTO tab VALUES(...)". |
*/ |
if( azCol[0] ){ |
appendText(&sTable, "(", 0); |
appendText(&sTable, azCol[0], 0); |
for(i=1; azCol[i]; i++){ |
appendText(&sTable, ",", 0); |
appendText(&sTable, azCol[i], quoteChar(azCol[i])); |
} |
appendText(&sTable, ")", 0); |
} |
|
/* Build an appropriate SELECT statement */ |
initText(&sSelect); |
appendText(&sSelect, "SELECT ", 0); |
if( azCol[0] ){ |
appendText(&sSelect, azCol[0], 0); |
appendText(&sSelect, ",", 0); |
} |
for(i=1; azCol[i]; i++){ |
appendText(&sSelect, azCol[i], quoteChar(azCol[i])); |
if( azCol[i+1] ){ |
appendText(&sSelect, ",", 0); |
} |
} |
freeColumnList(azCol); |
appendText(&sSelect, " FROM ", 0); |
appendText(&sSelect, zTable, quoteChar(zTable)); |
|
savedDestTable = p->zDestTable; |
savedMode = p->mode; |
p->zDestTable = sTable.z; |
p->mode = p->cMode = MODE_Insert; |
rc = shell_exec(p, sSelect.z, 0); |
if( (rc&0xff)==SQLITE_CORRUPT ){ |
raw_printf(p->out, "/****** CORRUPTION ERROR *******/\n"); |
toggleSelectOrder(p->db); |
shell_exec(p, sSelect.z, 0); |
toggleSelectOrder(p->db); |
} |
p->zDestTable = savedDestTable; |
p->mode = savedMode; |
freeText(&sTable); |
freeText(&sSelect); |
if( rc ) p->nErr++; |
} |
return 0; |
} |
|
/* |
** Run zQuery. Use dump_callback() as the callback routine so that |
** the contents of the query are output as SQL statements. |
** |
** If we get a SQLITE_CORRUPT error, rerun the query after appending |
** "ORDER BY rowid DESC" to the end. |
*/ |
static int run_schema_dump_query( |
ShellState *p, |
const char *zQuery |
){ |
int rc; |
char *zErr = 0; |
rc = sqlite3_exec(p->db, zQuery, dump_callback, p, &zErr); |
if( rc==SQLITE_CORRUPT ){ |
char *zQ2; |
int len = strlen30(zQuery); |
raw_printf(p->out, "/****** CORRUPTION ERROR *******/\n"); |
if( zErr ){ |
utf8_printf(p->out, "/****** %s ******/\n", zErr); |
sqlite3_free(zErr); |
zErr = 0; |
} |
zQ2 = malloc( len+100 ); |
if( zQ2==0 ) return rc; |
sqlite3_snprintf(len+100, zQ2, "%s ORDER BY rowid DESC", zQuery); |
rc = sqlite3_exec(p->db, zQ2, dump_callback, p, &zErr); |
if( rc ){ |
utf8_printf(p->out, "/****** ERROR: %s ******/\n", zErr); |
}else{ |
rc = SQLITE_CORRUPT; |
} |
sqlite3_free(zErr); |
free(zQ2); |
} |
return rc; |
} |
|
/* |
** Text of help messages. |
** |
** The help text for each individual command begins with a line that starts |
** with ".". Subsequent lines are supplimental information. |
** |
** There must be two or more spaces between the end of the command and the |
** start of the description of what that command does. |
*/ |
static const char *(azHelp[]) = { |
#if defined(SQLITE_HAVE_ZLIB) && !defined(SQLITE_OMIT_VIRTUALTABLE) |
".archive ... Manage SQL archives", |
" Each command must have exactly one of the following options:", |
" -c, --create Create a new archive", |
" -u, --update Add or update files with changed mtime", |
" -i, --insert Like -u but always add even if unchanged", |
" -t, --list List contents of archive", |
" -x, --extract Extract files from archive", |
" Optional arguments:", |
" -v, --verbose Print each filename as it is processed", |
" -f FILE, --file FILE Use archive FILE (default is current db)", |
" -a FILE, --append FILE Open FILE using the apndvfs VFS", |
" -C DIR, --directory DIR Read/extract files from directory DIR", |
" -n, --dryrun Show the SQL that would have occurred", |
" Examples:", |
" .ar -cf ARCHIVE foo bar # Create ARCHIVE from files foo and bar", |
" .ar -tf ARCHIVE # List members of ARCHIVE", |
" .ar -xvf ARCHIVE # Verbosely extract files from ARCHIVE", |
" See also:", |
" http://sqlite.org/cli.html#sqlar_archive_support", |
#endif |
#ifndef SQLITE_OMIT_AUTHORIZATION |
".auth ON|OFF Show authorizer callbacks", |
#endif |
".backup ?DB? FILE Backup DB (default \"main\") to FILE", |
" --append Use the appendvfs", |
" --async Write to FILE without journal and fsync()", |
".bail on|off Stop after hitting an error. Default OFF", |
".binary on|off Turn binary output on or off. Default OFF", |
".cd DIRECTORY Change the working directory to DIRECTORY", |
".changes on|off Show number of rows changed by SQL", |
".check GLOB Fail if output since .testcase does not match", |
".clone NEWDB Clone data into NEWDB from the existing database", |
".databases List names and files of attached databases", |
".dbconfig ?op? ?val? List or change sqlite3_db_config() options", |
".dbinfo ?DB? Show status information about the database", |
".dump ?OBJECTS? Render database content as SQL", |
" Options:", |
" --data-only Output only INSERT statements", |
" --newlines Allow unescaped newline characters in output", |
" --nosys Omit system tables (ex: \"sqlite_stat1\")", |
" --preserve-rowids Include ROWID values in the output", |
" OBJECTS is a LIKE pattern for tables, indexes, triggers or views to dump", |
" Additional LIKE patterns can be given in subsequent arguments", |
".echo on|off Turn command echo on or off", |
".eqp on|off|full|... Enable or disable automatic EXPLAIN QUERY PLAN", |
" Other Modes:", |
#ifdef SQLITE_DEBUG |
" test Show raw EXPLAIN QUERY PLAN output", |
" trace Like \"full\" but enable \"PRAGMA vdbe_trace\"", |
#endif |
" trigger Like \"full\" but also show trigger bytecode", |
".excel Display the output of next command in spreadsheet", |
" --bom Put a UTF8 byte-order mark on intermediate file", |
".exit ?CODE? Exit this program with return-code CODE", |
".expert EXPERIMENTAL. Suggest indexes for queries", |
".explain ?on|off|auto? Change the EXPLAIN formatting mode. Default: auto", |
".filectrl CMD ... Run various sqlite3_file_control() operations", |
" --schema SCHEMA Use SCHEMA instead of \"main\"", |
" --help Show CMD details", |
".fullschema ?--indent? Show schema and the content of sqlite_stat tables", |
".headers on|off Turn display of headers on or off", |
".help ?-all? ?PATTERN? Show help text for PATTERN", |
".import FILE TABLE Import data from FILE into TABLE", |
" Options:", |
" --ascii Use \\037 and \\036 as column and row separators", |
" --csv Use , and \\n as column and row separators", |
" --skip N Skip the first N rows of input", |
" -v \"Verbose\" - increase auxiliary output", |
" Notes:", |
" * If TABLE does not exist, it is created. The first row of input", |
" determines the column names.", |
" * If neither --csv or --ascii are used, the input mode is derived", |
" from the \".mode\" output mode", |
" * If FILE begins with \"|\" then it is a command that generates the", |
" input text.", |
#ifndef SQLITE_OMIT_TEST_CONTROL |
".imposter INDEX TABLE Create imposter table TABLE on index INDEX", |
#endif |
".indexes ?TABLE? Show names of indexes", |
" If TABLE is specified, only show indexes for", |
" tables matching TABLE using the LIKE operator.", |
#ifdef SQLITE_ENABLE_IOTRACE |
".iotrace FILE Enable I/O diagnostic logging to FILE", |
#endif |
".limit ?LIMIT? ?VAL? Display or change the value of an SQLITE_LIMIT", |
".lint OPTIONS Report potential schema issues.", |
" Options:", |
" fkey-indexes Find missing foreign key indexes", |
#ifndef SQLITE_OMIT_LOAD_EXTENSION |
".load FILE ?ENTRY? Load an extension library", |
#endif |
".log FILE|off Turn logging on or off. FILE can be stderr/stdout", |
".mode MODE ?TABLE? Set output mode", |
" MODE is one of:", |
" ascii Columns/rows delimited by 0x1F and 0x1E", |
" box Tables using unicode box-drawing characters", |
" csv Comma-separated values", |
" column Output in columns. (See .width)", |
" html HTML <table> code", |
" insert SQL insert statements for TABLE", |
" json Results in a JSON array", |
" line One value per line", |
" list Values delimited by \"|\"", |
" markdown Markdown table format", |
" quote Escape answers as for SQL", |
" table ASCII-art table", |
" tabs Tab-separated values", |
" tcl TCL list elements", |
".nullvalue STRING Use STRING in place of NULL values", |
".once ?OPTIONS? ?FILE? Output for the next SQL command only to FILE", |
" If FILE begins with '|' then open as a pipe", |
" --bom Put a UTF8 byte-order mark at the beginning", |
" -e Send output to the system text editor", |
" -x Send output as CSV to a spreadsheet (same as \".excel\")", |
#ifdef SQLITE_DEBUG |
".oom ?--repeat M? ?N? Simulate an OOM error on the N-th allocation", |
#endif |
".open ?OPTIONS? ?FILE? Close existing database and reopen FILE", |
" Options:", |
" --append Use appendvfs to append database to the end of FILE", |
#ifdef SQLITE_ENABLE_DESERIALIZE |
" --deserialize Load into memory useing sqlite3_deserialize()", |
" --hexdb Load the output of \"dbtotxt\" as an in-memory db", |
" --maxsize N Maximum size for --hexdb or --deserialized database", |
#endif |
" --new Initialize FILE to an empty database", |
" --nofollow Do not follow symbolic links", |
" --readonly Open FILE readonly", |
" --zip FILE is a ZIP archive", |
".output ?FILE? Send output to FILE or stdout if FILE is omitted", |
" If FILE begins with '|' then open it as a pipe.", |
" Options:", |
" --bom Prefix output with a UTF8 byte-order mark", |
" -e Send output to the system text editor", |
" -x Send output as CSV to a spreadsheet", |
".parameter CMD ... Manage SQL parameter bindings", |
" clear Erase all bindings", |
" init Initialize the TEMP table that holds bindings", |
" list List the current parameter bindings", |
" set PARAMETER VALUE Given SQL parameter PARAMETER a value of VALUE", |
" PARAMETER should start with one of: $ : @ ?", |
" unset PARAMETER Remove PARAMETER from the binding table", |
".print STRING... Print literal STRING", |
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK |
".progress N Invoke progress handler after every N opcodes", |
" --limit N Interrupt after N progress callbacks", |
" --once Do no more than one progress interrupt", |
" --quiet|-q No output except at interrupts", |
" --reset Reset the count for each input and interrupt", |
#endif |
".prompt MAIN CONTINUE Replace the standard prompts", |
".quit Exit this program", |
".read FILE Read input from FILE", |
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_ENABLE_DBPAGE_VTAB) |
".recover Recover as much data as possible from corrupt db.", |
" --freelist-corrupt Assume the freelist is corrupt", |
" --recovery-db NAME Store recovery metadata in database file NAME", |
" --lost-and-found TABLE Alternative name for the lost-and-found table", |
" --no-rowids Do not attempt to recover rowid values", |
" that are not also INTEGER PRIMARY KEYs", |
#endif |
".restore ?DB? FILE Restore content of DB (default \"main\") from FILE", |
".save FILE Write in-memory database into FILE", |
".scanstats on|off Turn sqlite3_stmt_scanstatus() metrics on or off", |
".schema ?PATTERN? Show the CREATE statements matching PATTERN", |
" Options:", |
" --indent Try to pretty-print the schema", |
" --nosys Omit objects whose names start with \"sqlite_\"", |
".selftest ?OPTIONS? Run tests defined in the SELFTEST table", |
" Options:", |
" --init Create a new SELFTEST table", |
" -v Verbose output", |
".separator COL ?ROW? Change the column and row separators", |
#if defined(SQLITE_ENABLE_SESSION) |
".session ?NAME? CMD ... Create or control sessions", |
" Subcommands:", |
" attach TABLE Attach TABLE", |
" changeset FILE Write a changeset into FILE", |
" close Close one session", |
" enable ?BOOLEAN? Set or query the enable bit", |
" filter GLOB... Reject tables matching GLOBs", |
" indirect ?BOOLEAN? Mark or query the indirect status", |
" isempty Query whether the session is empty", |
" list List currently open session names", |
" open DB NAME Open a new session on DB", |
" patchset FILE Write a patchset into FILE", |
" If ?NAME? is omitted, the first defined session is used.", |
#endif |
".sha3sum ... Compute a SHA3 hash of database content", |
" Options:", |
" --schema Also hash the sqlite_schema table", |
" --sha3-224 Use the sha3-224 algorithm", |
" --sha3-256 Use the sha3-256 algorithm (default)", |
" --sha3-384 Use the sha3-384 algorithm", |
" --sha3-512 Use the sha3-512 algorithm", |
" Any other argument is a LIKE pattern for tables to hash", |
#ifndef SQLITE_NOHAVE_SYSTEM |
".shell CMD ARGS... Run CMD ARGS... in a system shell", |
#endif |
".show Show the current values for various settings", |
".stats ?ARG? Show stats or turn stats on or off", |
" off Turn off automatic stat display", |
" on Turn on automatic stat display", |
" stmt Show statement stats", |
" vmstep Show the virtual machine step count only", |
#ifndef SQLITE_NOHAVE_SYSTEM |
".system CMD ARGS... Run CMD ARGS... in a system shell", |
#endif |
".tables ?TABLE? List names of tables matching LIKE pattern TABLE", |
".testcase NAME Begin redirecting output to 'testcase-out.txt'", |
".testctrl CMD ... Run various sqlite3_test_control() operations", |
" Run \".testctrl\" with no arguments for details", |
".timeout MS Try opening locked tables for MS milliseconds", |
".timer on|off Turn SQL timer on or off", |
#ifndef SQLITE_OMIT_TRACE |
".trace ?OPTIONS? Output each SQL statement as it is run", |
" FILE Send output to FILE", |
" stdout Send output to stdout", |
" stderr Send output to stderr", |
" off Disable tracing", |
" --expanded Expand query parameters", |
#ifdef SQLITE_ENABLE_NORMALIZE |
" --normalized Normal the SQL statements", |
#endif |
" --plain Show SQL as it is input", |
" --stmt Trace statement execution (SQLITE_TRACE_STMT)", |
" --profile Profile statements (SQLITE_TRACE_PROFILE)", |
" --row Trace each row (SQLITE_TRACE_ROW)", |
" --close Trace connection close (SQLITE_TRACE_CLOSE)", |
#endif /* SQLITE_OMIT_TRACE */ |
#ifdef SQLITE_DEBUG |
".unmodule NAME ... Unregister virtual table modules", |
" --allexcept Unregister everything except those named", |
#endif |
".vfsinfo ?AUX? Information about the top-level VFS", |
".vfslist List all available VFSes", |
".vfsname ?AUX? Print the name of the VFS stack", |
".width NUM1 NUM2 ... Set minimum column widths for columnar output", |
" Negative values right-justify", |
}; |
|
/* |
** Output help text. |
** |
** zPattern describes the set of commands for which help text is provided. |
** If zPattern is NULL, then show all commands, but only give a one-line |
** description of each. |
** |
** Return the number of matches. |
*/ |
static int showHelp(FILE *out, const char *zPattern){ |
int i = 0; |
int j = 0; |
int n = 0; |
char *zPat; |
if( zPattern==0 |
|| zPattern[0]=='0' |
|| strcmp(zPattern,"-a")==0 |
|| strcmp(zPattern,"-all")==0 |
|| strcmp(zPattern,"--all")==0 |
){ |
/* Show all commands, but only one line per command */ |
if( zPattern==0 ) zPattern = ""; |
for(i=0; i<ArraySize(azHelp); i++){ |
if( azHelp[i][0]=='.' || zPattern[0] ){ |
utf8_printf(out, "%s\n", azHelp[i]); |
n++; |
} |
} |
}else{ |
/* Look for commands that for which zPattern is an exact prefix */ |
zPat = sqlite3_mprintf(".%s*", zPattern); |
for(i=0; i<ArraySize(azHelp); i++){ |
if( sqlite3_strglob(zPat, azHelp[i])==0 ){ |
utf8_printf(out, "%s\n", azHelp[i]); |
j = i+1; |
n++; |
} |
} |
sqlite3_free(zPat); |
if( n ){ |
if( n==1 ){ |
/* when zPattern is a prefix of exactly one command, then include the |
** details of that command, which should begin at offset j */ |
while( j<ArraySize(azHelp)-1 && azHelp[j][0]!='.' ){ |
utf8_printf(out, "%s\n", azHelp[j]); |
j++; |
} |
} |
return n; |
} |
/* Look for commands that contain zPattern anywhere. Show the complete |
** text of all commands that match. */ |
zPat = sqlite3_mprintf("%%%s%%", zPattern); |
for(i=0; i<ArraySize(azHelp); i++){ |
if( azHelp[i][0]=='.' ) j = i; |
if( sqlite3_strlike(zPat, azHelp[i], 0)==0 ){ |
utf8_printf(out, "%s\n", azHelp[j]); |
while( j<ArraySize(azHelp)-1 && azHelp[j+1][0]!='.' ){ |
j++; |
utf8_printf(out, "%s\n", azHelp[j]); |
} |
i = j; |
n++; |
} |
} |
sqlite3_free(zPat); |
} |
return n; |
} |
|
/* Forward reference */ |
static int process_input(ShellState *p); |
|
/* |
** Read the content of file zName into memory obtained from sqlite3_malloc64() |
** and return a pointer to the buffer. The caller is responsible for freeing |
** the memory. |
** |
** If parameter pnByte is not NULL, (*pnByte) is set to the number of bytes |
** read. |
** |
** For convenience, a nul-terminator byte is always appended to the data read |
** from the file before the buffer is returned. This byte is not included in |
** the final value of (*pnByte), if applicable. |
** |
** NULL is returned if any error is encountered. The final value of *pnByte |
** is undefined in this case. |
*/ |
static char *readFile(const char *zName, int *pnByte){ |
FILE *in = fopen(zName, "rb"); |
long nIn; |
size_t nRead; |
char *pBuf; |
if( in==0 ) return 0; |
fseek(in, 0, SEEK_END); |
nIn = ftell(in); |
rewind(in); |
pBuf = sqlite3_malloc64( nIn+1 ); |
if( pBuf==0 ){ fclose(in); return 0; } |
nRead = fread(pBuf, nIn, 1, in); |
fclose(in); |
if( nRead!=1 ){ |
sqlite3_free(pBuf); |
return 0; |
} |
pBuf[nIn] = 0; |
if( pnByte ) *pnByte = nIn; |
return pBuf; |
} |
|
#if defined(SQLITE_ENABLE_SESSION) |
/* |
** Close a single OpenSession object and release all of its associated |
** resources. |
*/ |
static void session_close(OpenSession *pSession){ |
int i; |
sqlite3session_delete(pSession->p); |
sqlite3_free(pSession->zName); |
for(i=0; i<pSession->nFilter; i++){ |
sqlite3_free(pSession->azFilter[i]); |
} |
sqlite3_free(pSession->azFilter); |
memset(pSession, 0, sizeof(OpenSession)); |
} |
#endif |
|
/* |
** Close all OpenSession objects and release all associated resources. |
*/ |
#if defined(SQLITE_ENABLE_SESSION) |
static void session_close_all(ShellState *p){ |
int i; |
for(i=0; i<p->nSession; i++){ |
session_close(&p->aSession[i]); |
} |
p->nSession = 0; |
} |
#else |
# define session_close_all(X) |
#endif |
|
/* |
** Implementation of the xFilter function for an open session. Omit |
** any tables named by ".session filter" but let all other table through. |
*/ |
#if defined(SQLITE_ENABLE_SESSION) |
static int session_filter(void *pCtx, const char *zTab){ |
OpenSession *pSession = (OpenSession*)pCtx; |
int i; |
for(i=0; i<pSession->nFilter; i++){ |
if( sqlite3_strglob(pSession->azFilter[i], zTab)==0 ) return 0; |
} |
return 1; |
} |
#endif |
|
/* |
** Try to deduce the type of file for zName based on its content. Return |
** one of the SHELL_OPEN_* constants. |
** |
** If the file does not exist or is empty but its name looks like a ZIP |
** archive and the dfltZip flag is true, then assume it is a ZIP archive. |
** Otherwise, assume an ordinary database regardless of the filename if |
** the type cannot be determined from content. |
*/ |
int deduceDatabaseType(const char *zName, int dfltZip){ |
FILE *f = fopen(zName, "rb"); |
size_t n; |
int rc = SHELL_OPEN_UNSPEC; |
char zBuf[100]; |
if( f==0 ){ |
if( dfltZip && sqlite3_strlike("%.zip",zName,0)==0 ){ |
return SHELL_OPEN_ZIPFILE; |
}else{ |
return SHELL_OPEN_NORMAL; |
} |
} |
n = fread(zBuf, 16, 1, f); |
if( n==1 && memcmp(zBuf, "SQLite format 3", 16)==0 ){ |
fclose(f); |
return SHELL_OPEN_NORMAL; |
} |
fseek(f, -25, SEEK_END); |
n = fread(zBuf, 25, 1, f); |
if( n==1 && memcmp(zBuf, "Start-Of-SQLite3-", 17)==0 ){ |
rc = SHELL_OPEN_APPENDVFS; |
}else{ |
fseek(f, -22, SEEK_END); |
n = fread(zBuf, 22, 1, f); |
if( n==1 && zBuf[0]==0x50 && zBuf[1]==0x4b && zBuf[2]==0x05 |
&& zBuf[3]==0x06 ){ |
rc = SHELL_OPEN_ZIPFILE; |
}else if( n==0 && dfltZip && sqlite3_strlike("%.zip",zName,0)==0 ){ |
rc = SHELL_OPEN_ZIPFILE; |
} |
} |
fclose(f); |
return rc; |
} |
|
#ifdef SQLITE_ENABLE_DESERIALIZE |
/* |
** Reconstruct an in-memory database using the output from the "dbtotxt" |
** program. Read content from the file in p->zDbFilename. If p->zDbFilename |
** is 0, then read from standard input. |
*/ |
static unsigned char *readHexDb(ShellState *p, int *pnData){ |
unsigned char *a = 0; |
int nLine; |
int n = 0; |
int pgsz = 0; |
int iOffset = 0; |
int j, k; |
int rc; |
FILE *in; |
unsigned int x[16]; |
char zLine[1000]; |
if( p->zDbFilename ){ |
in = fopen(p->zDbFilename, "r"); |
if( in==0 ){ |
utf8_printf(stderr, "cannot open \"%s\" for reading\n", p->zDbFilename); |
return 0; |
} |
nLine = 0; |
}else{ |
in = p->in; |
nLine = p->lineno; |
if( in==0 ) in = stdin; |
} |
*pnData = 0; |
nLine++; |
if( fgets(zLine, sizeof(zLine), in)==0 ) goto readHexDb_error; |
rc = sscanf(zLine, "| size %d pagesize %d", &n, &pgsz); |
if( rc!=2 ) goto readHexDb_error; |
if( n<0 ) goto readHexDb_error; |
if( pgsz<512 || pgsz>65536 || (pgsz&(pgsz-1))!=0 ) goto readHexDb_error; |
n = (n+pgsz-1)&~(pgsz-1); /* Round n up to the next multiple of pgsz */ |
a = sqlite3_malloc( n ? n : 1 ); |
if( a==0 ){ |
utf8_printf(stderr, "Out of memory!\n"); |
goto readHexDb_error; |
} |
memset(a, 0, n); |
if( pgsz<512 || pgsz>65536 || (pgsz & (pgsz-1))!=0 ){ |
utf8_printf(stderr, "invalid pagesize\n"); |
goto readHexDb_error; |
} |
for(nLine++; fgets(zLine, sizeof(zLine), in)!=0; nLine++){ |
rc = sscanf(zLine, "| page %d offset %d", &j, &k); |
if( rc==2 ){ |
iOffset = k; |
continue; |
} |
if( strncmp(zLine, "| end ", 6)==0 ){ |
break; |
} |
rc = sscanf(zLine,"| %d: %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x %x", |
&j, &x[0], &x[1], &x[2], &x[3], &x[4], &x[5], &x[6], &x[7], |
&x[8], &x[9], &x[10], &x[11], &x[12], &x[13], &x[14], &x[15]); |
if( rc==17 ){ |
k = iOffset+j; |
if( k+16<=n ){ |
int ii; |
for(ii=0; ii<16; ii++) a[k+ii] = x[ii]&0xff; |
} |
} |
} |
*pnData = n; |
if( in!=p->in ){ |
fclose(in); |
}else{ |
p->lineno = nLine; |
} |
return a; |
|
readHexDb_error: |
if( in!=p->in ){ |
fclose(in); |
}else{ |
while( fgets(zLine, sizeof(zLine), p->in)!=0 ){ |
nLine++; |
if(strncmp(zLine, "| end ", 6)==0 ) break; |
} |
p->lineno = nLine; |
} |
sqlite3_free(a); |
utf8_printf(stderr,"Error on line %d of --hexdb input\n", nLine); |
return 0; |
} |
#endif /* SQLITE_ENABLE_DESERIALIZE */ |
|
/* |
** Scalar function "shell_int32". The first argument to this function |
** must be a blob. The second a non-negative integer. This function |
** reads and returns a 32-bit big-endian integer from byte |
** offset (4*<arg2>) of the blob. |
*/ |
static void shellInt32( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
const unsigned char *pBlob; |
int nBlob; |
int iInt; |
|
UNUSED_PARAMETER(argc); |
nBlob = sqlite3_value_bytes(argv[0]); |
pBlob = (const unsigned char*)sqlite3_value_blob(argv[0]); |
iInt = sqlite3_value_int(argv[1]); |
|
if( iInt>=0 && (iInt+1)*4<=nBlob ){ |
const unsigned char *a = &pBlob[iInt*4]; |
sqlite3_int64 iVal = ((sqlite3_int64)a[0]<<24) |
+ ((sqlite3_int64)a[1]<<16) |
+ ((sqlite3_int64)a[2]<< 8) |
+ ((sqlite3_int64)a[3]<< 0); |
sqlite3_result_int64(context, iVal); |
} |
} |
|
/* |
** Scalar function "shell_idquote(X)" returns string X quoted as an identifier, |
** using "..." with internal double-quote characters doubled. |
*/ |
static void shellIdQuote( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
const char *zName = (const char*)sqlite3_value_text(argv[0]); |
UNUSED_PARAMETER(argc); |
if( zName ){ |
char *z = sqlite3_mprintf("\"%w\"", zName); |
sqlite3_result_text(context, z, -1, sqlite3_free); |
} |
} |
|
/* |
** Scalar function "usleep(X)" invokes sqlite3_sleep(X) and returns X. |
*/ |
static void shellUSleepFunc( |
sqlite3_context *context, |
int argcUnused, |
sqlite3_value **argv |
){ |
int sleep = sqlite3_value_int(argv[0]); |
(void)argcUnused; |
sqlite3_sleep(sleep/1000); |
sqlite3_result_int(context, sleep); |
} |
|
/* |
** Scalar function "shell_escape_crnl" used by the .recover command. |
** The argument passed to this function is the output of built-in |
** function quote(). If the first character of the input is "'", |
** indicating that the value passed to quote() was a text value, |
** then this function searches the input for "\n" and "\r" characters |
** and adds a wrapper similar to the following: |
** |
** replace(replace(<input>, '\n', char(10), '\r', char(13)); |
** |
** Or, if the first character of the input is not "'", then a copy |
** of the input is returned. |
*/ |
static void shellEscapeCrnl( |
sqlite3_context *context, |
int argc, |
sqlite3_value **argv |
){ |
const char *zText = (const char*)sqlite3_value_text(argv[0]); |
UNUSED_PARAMETER(argc); |
if( zText[0]=='\'' ){ |
int nText = sqlite3_value_bytes(argv[0]); |
int i; |
char zBuf1[20]; |
char zBuf2[20]; |
const char *zNL = 0; |
const char *zCR = 0; |
int nCR = 0; |
int nNL = 0; |
|
for(i=0; zText[i]; i++){ |
if( zNL==0 && zText[i]=='\n' ){ |
zNL = unused_string(zText, "\\n", "\\012", zBuf1); |
nNL = (int)strlen(zNL); |
} |
if( zCR==0 && zText[i]=='\r' ){ |
zCR = unused_string(zText, "\\r", "\\015", zBuf2); |
nCR = (int)strlen(zCR); |
} |
} |
|
if( zNL || zCR ){ |
int iOut = 0; |
i64 nMax = (nNL > nCR) ? nNL : nCR; |
i64 nAlloc = nMax * nText + (nMax+64)*2; |
char *zOut = (char*)sqlite3_malloc64(nAlloc); |
if( zOut==0 ){ |
sqlite3_result_error_nomem(context); |
return; |
} |
|
if( zNL && zCR ){ |
memcpy(&zOut[iOut], "replace(replace(", 16); |
iOut += 16; |
}else{ |
memcpy(&zOut[iOut], "replace(", 8); |
iOut += 8; |
} |
for(i=0; zText[i]; i++){ |
if( zText[i]=='\n' ){ |
memcpy(&zOut[iOut], zNL, nNL); |
iOut += nNL; |
}else if( zText[i]=='\r' ){ |
memcpy(&zOut[iOut], zCR, nCR); |
iOut += nCR; |
}else{ |
zOut[iOut] = zText[i]; |
iOut++; |
} |
} |
|
if( zNL ){ |
memcpy(&zOut[iOut], ",'", 2); iOut += 2; |
memcpy(&zOut[iOut], zNL, nNL); iOut += nNL; |
memcpy(&zOut[iOut], "', char(10))", 12); iOut += 12; |
} |
if( zCR ){ |
memcpy(&zOut[iOut], ",'", 2); iOut += 2; |
memcpy(&zOut[iOut], zCR, nCR); iOut += nCR; |
memcpy(&zOut[iOut], "', char(13))", 12); iOut += 12; |
} |
|
sqlite3_result_text(context, zOut, iOut, SQLITE_TRANSIENT); |
sqlite3_free(zOut); |
return; |
} |
} |
|
sqlite3_result_value(context, argv[0]); |
} |
|
/* Flags for open_db(). |
** |
** The default behavior of open_db() is to exit(1) if the database fails to |
** open. The OPEN_DB_KEEPALIVE flag changes that so that it prints an error |
** but still returns without calling exit. |
** |
** The OPEN_DB_ZIPFILE flag causes open_db() to prefer to open files as a |
** ZIP archive if the file does not exist or is empty and its name matches |
** the *.zip pattern. |
*/ |
#define OPEN_DB_KEEPALIVE 0x001 /* Return after error if true */ |
#define OPEN_DB_ZIPFILE 0x002 /* Open as ZIP if name matches *.zip */ |
|
/* |
** Make sure the database is open. If it is not, then open it. If |
** the database fails to open, print an error message and exit. |
*/ |
static void open_db(ShellState *p, int openFlags){ |
if( p->db==0 ){ |
if( p->openMode==SHELL_OPEN_UNSPEC ){ |
if( p->zDbFilename==0 || p->zDbFilename[0]==0 ){ |
p->openMode = SHELL_OPEN_NORMAL; |
}else{ |
p->openMode = (u8)deduceDatabaseType(p->zDbFilename, |
(openFlags & OPEN_DB_ZIPFILE)!=0); |
} |
} |
switch( p->openMode ){ |
case SHELL_OPEN_APPENDVFS: { |
sqlite3_open_v2(p->zDbFilename, &p->db, |
SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|p->openFlags, "apndvfs"); |
break; |
} |
case SHELL_OPEN_HEXDB: |
case SHELL_OPEN_DESERIALIZE: { |
sqlite3_open(0, &p->db); |
break; |
} |
case SHELL_OPEN_ZIPFILE: { |
sqlite3_open(":memory:", &p->db); |
break; |
} |
case SHELL_OPEN_READONLY: { |
sqlite3_open_v2(p->zDbFilename, &p->db, |
SQLITE_OPEN_READONLY|p->openFlags, 0); |
break; |
} |
case SHELL_OPEN_UNSPEC: |
case SHELL_OPEN_NORMAL: { |
sqlite3_open_v2(p->zDbFilename, &p->db, |
SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|p->openFlags, 0); |
break; |
} |
} |
globalDb = p->db; |
if( p->db==0 || SQLITE_OK!=sqlite3_errcode(p->db) ){ |
utf8_printf(stderr,"Error: unable to open database \"%s\": %s\n", |
p->zDbFilename, sqlite3_errmsg(p->db)); |
if( openFlags & OPEN_DB_KEEPALIVE ){ |
sqlite3_open(":memory:", &p->db); |
return; |
} |
exit(1); |
} |
#ifndef SQLITE_OMIT_LOAD_EXTENSION |
sqlite3_enable_load_extension(p->db, 1); |
#endif |
sqlite3_fileio_init(p->db, 0, 0); |
sqlite3_shathree_init(p->db, 0, 0); |
sqlite3_completion_init(p->db, 0, 0); |
sqlite3_uint_init(p->db, 0, 0); |
sqlite3_decimal_init(p->db, 0, 0); |
sqlite3_ieee_init(p->db, 0, 0); |
sqlite3_series_init(p->db, 0, 0); |
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_ENABLE_DBPAGE_VTAB) |
sqlite3_dbdata_init(p->db, 0, 0); |
#endif |
#ifdef SQLITE_HAVE_ZLIB |
sqlite3_zipfile_init(p->db, 0, 0); |
sqlite3_sqlar_init(p->db, 0, 0); |
#endif |
sqlite3_create_function(p->db, "shell_add_schema", 3, SQLITE_UTF8, 0, |
shellAddSchemaName, 0, 0); |
sqlite3_create_function(p->db, "shell_module_schema", 1, SQLITE_UTF8, 0, |
shellModuleSchema, 0, 0); |
sqlite3_create_function(p->db, "shell_putsnl", 1, SQLITE_UTF8, p, |
shellPutsFunc, 0, 0); |
sqlite3_create_function(p->db, "shell_escape_crnl", 1, SQLITE_UTF8, 0, |
shellEscapeCrnl, 0, 0); |
sqlite3_create_function(p->db, "shell_int32", 2, SQLITE_UTF8, 0, |
shellInt32, 0, 0); |
sqlite3_create_function(p->db, "shell_idquote", 1, SQLITE_UTF8, 0, |
shellIdQuote, 0, 0); |
sqlite3_create_function(p->db, "usleep",1,SQLITE_UTF8,0, |
shellUSleepFunc, 0, 0); |
#ifndef SQLITE_NOHAVE_SYSTEM |
sqlite3_create_function(p->db, "edit", 1, SQLITE_UTF8, 0, |
editFunc, 0, 0); |
sqlite3_create_function(p->db, "edit", 2, SQLITE_UTF8, 0, |
editFunc, 0, 0); |
#endif |
if( p->openMode==SHELL_OPEN_ZIPFILE ){ |
char *zSql = sqlite3_mprintf( |
"CREATE VIRTUAL TABLE zip USING zipfile(%Q);", p->zDbFilename); |
sqlite3_exec(p->db, zSql, 0, 0, 0); |
sqlite3_free(zSql); |
} |
#ifdef SQLITE_ENABLE_DESERIALIZE |
else |
if( p->openMode==SHELL_OPEN_DESERIALIZE || p->openMode==SHELL_OPEN_HEXDB ){ |
int rc; |
int nData = 0; |
unsigned char *aData; |
if( p->openMode==SHELL_OPEN_DESERIALIZE ){ |
aData = (unsigned char*)readFile(p->zDbFilename, &nData); |
}else{ |
aData = readHexDb(p, &nData); |
if( aData==0 ){ |
return; |
} |
} |
rc = sqlite3_deserialize(p->db, "main", aData, nData, nData, |
SQLITE_DESERIALIZE_RESIZEABLE | |
SQLITE_DESERIALIZE_FREEONCLOSE); |
if( rc ){ |
utf8_printf(stderr, "Error: sqlite3_deserialize() returns %d\n", rc); |
} |
if( p->szMax>0 ){ |
sqlite3_file_control(p->db, "main", SQLITE_FCNTL_SIZE_LIMIT, &p->szMax); |
} |
} |
#endif |
} |
} |
|
/* |
** Attempt to close the databaes connection. Report errors. |
*/ |
void close_db(sqlite3 *db){ |
int rc = sqlite3_close(db); |
if( rc ){ |
utf8_printf(stderr, "Error: sqlite3_close() returns %d: %s\n", |
rc, sqlite3_errmsg(db)); |
} |
} |
|
#if HAVE_READLINE || HAVE_EDITLINE |
/* |
** Readline completion callbacks |
*/ |
static char *readline_completion_generator(const char *text, int state){ |
static sqlite3_stmt *pStmt = 0; |
char *zRet; |
if( state==0 ){ |
char *zSql; |
sqlite3_finalize(pStmt); |
zSql = sqlite3_mprintf("SELECT DISTINCT candidate COLLATE nocase" |
" FROM completion(%Q) ORDER BY 1", text); |
sqlite3_prepare_v2(globalDb, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
} |
if( sqlite3_step(pStmt)==SQLITE_ROW ){ |
zRet = strdup((const char*)sqlite3_column_text(pStmt, 0)); |
}else{ |
sqlite3_finalize(pStmt); |
pStmt = 0; |
zRet = 0; |
} |
return zRet; |
} |
static char **readline_completion(const char *zText, int iStart, int iEnd){ |
rl_attempted_completion_over = 1; |
return rl_completion_matches(zText, readline_completion_generator); |
} |
|
#elif HAVE_LINENOISE |
/* |
** Linenoise completion callback |
*/ |
static void linenoise_completion(const char *zLine, linenoiseCompletions *lc){ |
int nLine = strlen30(zLine); |
int i, iStart; |
sqlite3_stmt *pStmt = 0; |
char *zSql; |
char zBuf[1000]; |
|
if( nLine>sizeof(zBuf)-30 ) return; |
if( zLine[0]=='.' || zLine[0]=='#') return; |
for(i=nLine-1; i>=0 && (isalnum(zLine[i]) || zLine[i]=='_'); i--){} |
if( i==nLine-1 ) return; |
iStart = i+1; |
memcpy(zBuf, zLine, iStart); |
zSql = sqlite3_mprintf("SELECT DISTINCT candidate COLLATE nocase" |
" FROM completion(%Q,%Q) ORDER BY 1", |
&zLine[iStart], zLine); |
sqlite3_prepare_v2(globalDb, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
sqlite3_exec(globalDb, "PRAGMA page_count", 0, 0, 0); /* Load the schema */ |
while( sqlite3_step(pStmt)==SQLITE_ROW ){ |
const char *zCompletion = (const char*)sqlite3_column_text(pStmt, 0); |
int nCompletion = sqlite3_column_bytes(pStmt, 0); |
if( iStart+nCompletion < sizeof(zBuf)-1 ){ |
memcpy(zBuf+iStart, zCompletion, nCompletion+1); |
linenoiseAddCompletion(lc, zBuf); |
} |
} |
sqlite3_finalize(pStmt); |
} |
#endif |
|
/* |
** Do C-language style dequoting. |
** |
** \a -> alarm |
** \b -> backspace |
** \t -> tab |
** \n -> newline |
** \v -> vertical tab |
** \f -> form feed |
** \r -> carriage return |
** \s -> space |
** \" -> " |
** \' -> ' |
** \\ -> backslash |
** \NNN -> ascii character NNN in octal |
*/ |
static void resolve_backslashes(char *z){ |
int i, j; |
char c; |
while( *z && *z!='\\' ) z++; |
for(i=j=0; (c = z[i])!=0; i++, j++){ |
if( c=='\\' && z[i+1]!=0 ){ |
c = z[++i]; |
if( c=='a' ){ |
c = '\a'; |
}else if( c=='b' ){ |
c = '\b'; |
}else if( c=='t' ){ |
c = '\t'; |
}else if( c=='n' ){ |
c = '\n'; |
}else if( c=='v' ){ |
c = '\v'; |
}else if( c=='f' ){ |
c = '\f'; |
}else if( c=='r' ){ |
c = '\r'; |
}else if( c=='"' ){ |
c = '"'; |
}else if( c=='\'' ){ |
c = '\''; |
}else if( c=='\\' ){ |
c = '\\'; |
}else if( c>='0' && c<='7' ){ |
c -= '0'; |
if( z[i+1]>='0' && z[i+1]<='7' ){ |
i++; |
c = (c<<3) + z[i] - '0'; |
if( z[i+1]>='0' && z[i+1]<='7' ){ |
i++; |
c = (c<<3) + z[i] - '0'; |
} |
} |
} |
} |
z[j] = c; |
} |
if( j<i ) z[j] = 0; |
} |
|
/* |
** Interpret zArg as either an integer or a boolean value. Return 1 or 0 |
** for TRUE and FALSE. Return the integer value if appropriate. |
*/ |
static int booleanValue(const char *zArg){ |
int i; |
if( zArg[0]=='0' && zArg[1]=='x' ){ |
for(i=2; hexDigitValue(zArg[i])>=0; i++){} |
}else{ |
for(i=0; zArg[i]>='0' && zArg[i]<='9'; i++){} |
} |
if( i>0 && zArg[i]==0 ) return (int)(integerValue(zArg) & 0xffffffff); |
if( sqlite3_stricmp(zArg, "on")==0 || sqlite3_stricmp(zArg,"yes")==0 ){ |
return 1; |
} |
if( sqlite3_stricmp(zArg, "off")==0 || sqlite3_stricmp(zArg,"no")==0 ){ |
return 0; |
} |
utf8_printf(stderr, "ERROR: Not a boolean value: \"%s\". Assuming \"no\".\n", |
zArg); |
return 0; |
} |
|
/* |
** Set or clear a shell flag according to a boolean value. |
*/ |
static void setOrClearFlag(ShellState *p, unsigned mFlag, const char *zArg){ |
if( booleanValue(zArg) ){ |
ShellSetFlag(p, mFlag); |
}else{ |
ShellClearFlag(p, mFlag); |
} |
} |
|
/* |
** Close an output file, assuming it is not stderr or stdout |
*/ |
static void output_file_close(FILE *f){ |
if( f && f!=stdout && f!=stderr ) fclose(f); |
} |
|
/* |
** Try to open an output file. The names "stdout" and "stderr" are |
** recognized and do the right thing. NULL is returned if the output |
** filename is "off". |
*/ |
static FILE *output_file_open(const char *zFile, int bTextMode){ |
FILE *f; |
if( strcmp(zFile,"stdout")==0 ){ |
f = stdout; |
}else if( strcmp(zFile, "stderr")==0 ){ |
f = stderr; |
}else if( strcmp(zFile, "off")==0 ){ |
f = 0; |
}else{ |
f = fopen(zFile, bTextMode ? "w" : "wb"); |
if( f==0 ){ |
utf8_printf(stderr, "Error: cannot open \"%s\"\n", zFile); |
} |
} |
return f; |
} |
|
#ifndef SQLITE_OMIT_TRACE |
/* |
** A routine for handling output from sqlite3_trace(). |
*/ |
static int sql_trace_callback( |
unsigned mType, /* The trace type */ |
void *pArg, /* The ShellState pointer */ |
void *pP, /* Usually a pointer to sqlite_stmt */ |
void *pX /* Auxiliary output */ |
){ |
ShellState *p = (ShellState*)pArg; |
sqlite3_stmt *pStmt; |
const char *zSql; |
int nSql; |
if( p->traceOut==0 ) return 0; |
if( mType==SQLITE_TRACE_CLOSE ){ |
utf8_printf(p->traceOut, "-- closing database connection\n"); |
return 0; |
} |
if( mType!=SQLITE_TRACE_ROW && ((const char*)pX)[0]=='-' ){ |
zSql = (const char*)pX; |
}else{ |
pStmt = (sqlite3_stmt*)pP; |
switch( p->eTraceType ){ |
case SHELL_TRACE_EXPANDED: { |
zSql = sqlite3_expanded_sql(pStmt); |
break; |
} |
#ifdef SQLITE_ENABLE_NORMALIZE |
case SHELL_TRACE_NORMALIZED: { |
zSql = sqlite3_normalized_sql(pStmt); |
break; |
} |
#endif |
default: { |
zSql = sqlite3_sql(pStmt); |
break; |
} |
} |
} |
if( zSql==0 ) return 0; |
nSql = strlen30(zSql); |
while( nSql>0 && zSql[nSql-1]==';' ){ nSql--; } |
switch( mType ){ |
case SQLITE_TRACE_ROW: |
case SQLITE_TRACE_STMT: { |
utf8_printf(p->traceOut, "%.*s;\n", nSql, zSql); |
break; |
} |
case SQLITE_TRACE_PROFILE: { |
sqlite3_int64 nNanosec = *(sqlite3_int64*)pX; |
utf8_printf(p->traceOut, "%.*s; -- %lld ns\n", nSql, zSql, nNanosec); |
break; |
} |
} |
return 0; |
} |
#endif |
|
/* |
** A no-op routine that runs with the ".breakpoint" doc-command. This is |
** a useful spot to set a debugger breakpoint. |
*/ |
static void test_breakpoint(void){ |
static int nCall = 0; |
nCall++; |
} |
|
/* |
** An object used to read a CSV and other files for import. |
*/ |
typedef struct ImportCtx ImportCtx; |
struct ImportCtx { |
const char *zFile; /* Name of the input file */ |
FILE *in; /* Read the CSV text from this input stream */ |
int (SQLITE_CDECL *xCloser)(FILE*); /* Func to close in */ |
char *z; /* Accumulated text for a field */ |
int n; /* Number of bytes in z */ |
int nAlloc; /* Space allocated for z[] */ |
int nLine; /* Current line number */ |
int nRow; /* Number of rows imported */ |
int nErr; /* Number of errors encountered */ |
int bNotFirst; /* True if one or more bytes already read */ |
int cTerm; /* Character that terminated the most recent field */ |
int cColSep; /* The column separator character. (Usually ",") */ |
int cRowSep; /* The row separator character. (Usually "\n") */ |
}; |
|
/* Clean up resourced used by an ImportCtx */ |
static void import_cleanup(ImportCtx *p){ |
if( p->in!=0 && p->xCloser!=0 ){ |
p->xCloser(p->in); |
p->in = 0; |
} |
sqlite3_free(p->z); |
p->z = 0; |
} |
|
/* Append a single byte to z[] */ |
static void import_append_char(ImportCtx *p, int c){ |
if( p->n+1>=p->nAlloc ){ |
p->nAlloc += p->nAlloc + 100; |
p->z = sqlite3_realloc64(p->z, p->nAlloc); |
if( p->z==0 ) shell_out_of_memory(); |
} |
p->z[p->n++] = (char)c; |
} |
|
/* Read a single field of CSV text. Compatible with rfc4180 and extended |
** with the option of having a separator other than ",". |
** |
** + Input comes from p->in. |
** + Store results in p->z of length p->n. Space to hold p->z comes |
** from sqlite3_malloc64(). |
** + Use p->cSep as the column separator. The default is ",". |
** + Use p->rSep as the row separator. The default is "\n". |
** + Keep track of the line number in p->nLine. |
** + Store the character that terminates the field in p->cTerm. Store |
** EOF on end-of-file. |
** + Report syntax errors on stderr |
*/ |
static char *SQLITE_CDECL csv_read_one_field(ImportCtx *p){ |
int c; |
int cSep = p->cColSep; |
int rSep = p->cRowSep; |
p->n = 0; |
c = fgetc(p->in); |
if( c==EOF || seenInterrupt ){ |
p->cTerm = EOF; |
return 0; |
} |
if( c=='"' ){ |
int pc, ppc; |
int startLine = p->nLine; |
int cQuote = c; |
pc = ppc = 0; |
while( 1 ){ |
c = fgetc(p->in); |
if( c==rSep ) p->nLine++; |
if( c==cQuote ){ |
if( pc==cQuote ){ |
pc = 0; |
continue; |
} |
} |
if( (c==cSep && pc==cQuote) |
|| (c==rSep && pc==cQuote) |
|| (c==rSep && pc=='\r' && ppc==cQuote) |
|| (c==EOF && pc==cQuote) |
){ |
do{ p->n--; }while( p->z[p->n]!=cQuote ); |
p->cTerm = c; |
break; |
} |
if( pc==cQuote && c!='\r' ){ |
utf8_printf(stderr, "%s:%d: unescaped %c character\n", |
p->zFile, p->nLine, cQuote); |
} |
if( c==EOF ){ |
utf8_printf(stderr, "%s:%d: unterminated %c-quoted field\n", |
p->zFile, startLine, cQuote); |
p->cTerm = c; |
break; |
} |
import_append_char(p, c); |
ppc = pc; |
pc = c; |
} |
}else{ |
/* If this is the first field being parsed and it begins with the |
** UTF-8 BOM (0xEF BB BF) then skip the BOM */ |
if( (c&0xff)==0xef && p->bNotFirst==0 ){ |
import_append_char(p, c); |
c = fgetc(p->in); |
if( (c&0xff)==0xbb ){ |
import_append_char(p, c); |
c = fgetc(p->in); |
if( (c&0xff)==0xbf ){ |
p->bNotFirst = 1; |
p->n = 0; |
return csv_read_one_field(p); |
} |
} |
} |
while( c!=EOF && c!=cSep && c!=rSep ){ |
import_append_char(p, c); |
c = fgetc(p->in); |
} |
if( c==rSep ){ |
p->nLine++; |
if( p->n>0 && p->z[p->n-1]=='\r' ) p->n--; |
} |
p->cTerm = c; |
} |
if( p->z ) p->z[p->n] = 0; |
p->bNotFirst = 1; |
return p->z; |
} |
|
/* Read a single field of ASCII delimited text. |
** |
** + Input comes from p->in. |
** + Store results in p->z of length p->n. Space to hold p->z comes |
** from sqlite3_malloc64(). |
** + Use p->cSep as the column separator. The default is "\x1F". |
** + Use p->rSep as the row separator. The default is "\x1E". |
** + Keep track of the row number in p->nLine. |
** + Store the character that terminates the field in p->cTerm. Store |
** EOF on end-of-file. |
** + Report syntax errors on stderr |
*/ |
static char *SQLITE_CDECL ascii_read_one_field(ImportCtx *p){ |
int c; |
int cSep = p->cColSep; |
int rSep = p->cRowSep; |
p->n = 0; |
c = fgetc(p->in); |
if( c==EOF || seenInterrupt ){ |
p->cTerm = EOF; |
return 0; |
} |
while( c!=EOF && c!=cSep && c!=rSep ){ |
import_append_char(p, c); |
c = fgetc(p->in); |
} |
if( c==rSep ){ |
p->nLine++; |
} |
p->cTerm = c; |
if( p->z ) p->z[p->n] = 0; |
return p->z; |
} |
|
/* |
** Try to transfer data for table zTable. If an error is seen while |
** moving forward, try to go backwards. The backwards movement won't |
** work for WITHOUT ROWID tables. |
*/ |
static void tryToCloneData( |
ShellState *p, |
sqlite3 *newDb, |
const char *zTable |
){ |
sqlite3_stmt *pQuery = 0; |
sqlite3_stmt *pInsert = 0; |
char *zQuery = 0; |
char *zInsert = 0; |
int rc; |
int i, j, n; |
int nTable = strlen30(zTable); |
int k = 0; |
int cnt = 0; |
const int spinRate = 10000; |
|
zQuery = sqlite3_mprintf("SELECT * FROM \"%w\"", zTable); |
rc = sqlite3_prepare_v2(p->db, zQuery, -1, &pQuery, 0); |
if( rc ){ |
utf8_printf(stderr, "Error %d: %s on [%s]\n", |
sqlite3_extended_errcode(p->db), sqlite3_errmsg(p->db), |
zQuery); |
goto end_data_xfer; |
} |
n = sqlite3_column_count(pQuery); |
zInsert = sqlite3_malloc64(200 + nTable + n*3); |
if( zInsert==0 ) shell_out_of_memory(); |
sqlite3_snprintf(200+nTable,zInsert, |
"INSERT OR IGNORE INTO \"%s\" VALUES(?", zTable); |
i = strlen30(zInsert); |
for(j=1; j<n; j++){ |
memcpy(zInsert+i, ",?", 2); |
i += 2; |
} |
memcpy(zInsert+i, ");", 3); |
rc = sqlite3_prepare_v2(newDb, zInsert, -1, &pInsert, 0); |
if( rc ){ |
utf8_printf(stderr, "Error %d: %s on [%s]\n", |
sqlite3_extended_errcode(newDb), sqlite3_errmsg(newDb), |
zQuery); |
goto end_data_xfer; |
} |
for(k=0; k<2; k++){ |
while( (rc = sqlite3_step(pQuery))==SQLITE_ROW ){ |
for(i=0; i<n; i++){ |
switch( sqlite3_column_type(pQuery, i) ){ |
case SQLITE_NULL: { |
sqlite3_bind_null(pInsert, i+1); |
break; |
} |
case SQLITE_INTEGER: { |
sqlite3_bind_int64(pInsert, i+1, sqlite3_column_int64(pQuery,i)); |
break; |
} |
case SQLITE_FLOAT: { |
sqlite3_bind_double(pInsert, i+1, sqlite3_column_double(pQuery,i)); |
break; |
} |
case SQLITE_TEXT: { |
sqlite3_bind_text(pInsert, i+1, |
(const char*)sqlite3_column_text(pQuery,i), |
-1, SQLITE_STATIC); |
break; |
} |
case SQLITE_BLOB: { |
sqlite3_bind_blob(pInsert, i+1, sqlite3_column_blob(pQuery,i), |
sqlite3_column_bytes(pQuery,i), |
SQLITE_STATIC); |
break; |
} |
} |
} /* End for */ |
rc = sqlite3_step(pInsert); |
if( rc!=SQLITE_OK && rc!=SQLITE_ROW && rc!=SQLITE_DONE ){ |
utf8_printf(stderr, "Error %d: %s\n", sqlite3_extended_errcode(newDb), |
sqlite3_errmsg(newDb)); |
} |
sqlite3_reset(pInsert); |
cnt++; |
if( (cnt%spinRate)==0 ){ |
printf("%c\b", "|/-\\"[(cnt/spinRate)%4]); |
fflush(stdout); |
} |
} /* End while */ |
if( rc==SQLITE_DONE ) break; |
sqlite3_finalize(pQuery); |
sqlite3_free(zQuery); |
zQuery = sqlite3_mprintf("SELECT * FROM \"%w\" ORDER BY rowid DESC;", |
zTable); |
rc = sqlite3_prepare_v2(p->db, zQuery, -1, &pQuery, 0); |
if( rc ){ |
utf8_printf(stderr, "Warning: cannot step \"%s\" backwards", zTable); |
break; |
} |
} /* End for(k=0...) */ |
|
end_data_xfer: |
sqlite3_finalize(pQuery); |
sqlite3_finalize(pInsert); |
sqlite3_free(zQuery); |
sqlite3_free(zInsert); |
} |
|
|
/* |
** Try to transfer all rows of the schema that match zWhere. For |
** each row, invoke xForEach() on the object defined by that row. |
** If an error is encountered while moving forward through the |
** sqlite_schema table, try again moving backwards. |
*/ |
static void tryToCloneSchema( |
ShellState *p, |
sqlite3 *newDb, |
const char *zWhere, |
void (*xForEach)(ShellState*,sqlite3*,const char*) |
){ |
sqlite3_stmt *pQuery = 0; |
char *zQuery = 0; |
int rc; |
const unsigned char *zName; |
const unsigned char *zSql; |
char *zErrMsg = 0; |
|
zQuery = sqlite3_mprintf("SELECT name, sql FROM sqlite_schema" |
" WHERE %s", zWhere); |
rc = sqlite3_prepare_v2(p->db, zQuery, -1, &pQuery, 0); |
if( rc ){ |
utf8_printf(stderr, "Error: (%d) %s on [%s]\n", |
sqlite3_extended_errcode(p->db), sqlite3_errmsg(p->db), |
zQuery); |
goto end_schema_xfer; |
} |
while( (rc = sqlite3_step(pQuery))==SQLITE_ROW ){ |
zName = sqlite3_column_text(pQuery, 0); |
zSql = sqlite3_column_text(pQuery, 1); |
printf("%s... ", zName); fflush(stdout); |
sqlite3_exec(newDb, (const char*)zSql, 0, 0, &zErrMsg); |
if( zErrMsg ){ |
utf8_printf(stderr, "Error: %s\nSQL: [%s]\n", zErrMsg, zSql); |
sqlite3_free(zErrMsg); |
zErrMsg = 0; |
} |
if( xForEach ){ |
xForEach(p, newDb, (const char*)zName); |
} |
printf("done\n"); |
} |
if( rc!=SQLITE_DONE ){ |
sqlite3_finalize(pQuery); |
sqlite3_free(zQuery); |
zQuery = sqlite3_mprintf("SELECT name, sql FROM sqlite_schema" |
" WHERE %s ORDER BY rowid DESC", zWhere); |
rc = sqlite3_prepare_v2(p->db, zQuery, -1, &pQuery, 0); |
if( rc ){ |
utf8_printf(stderr, "Error: (%d) %s on [%s]\n", |
sqlite3_extended_errcode(p->db), sqlite3_errmsg(p->db), |
zQuery); |
goto end_schema_xfer; |
} |
while( (rc = sqlite3_step(pQuery))==SQLITE_ROW ){ |
zName = sqlite3_column_text(pQuery, 0); |
zSql = sqlite3_column_text(pQuery, 1); |
printf("%s... ", zName); fflush(stdout); |
sqlite3_exec(newDb, (const char*)zSql, 0, 0, &zErrMsg); |
if( zErrMsg ){ |
utf8_printf(stderr, "Error: %s\nSQL: [%s]\n", zErrMsg, zSql); |
sqlite3_free(zErrMsg); |
zErrMsg = 0; |
} |
if( xForEach ){ |
xForEach(p, newDb, (const char*)zName); |
} |
printf("done\n"); |
} |
} |
end_schema_xfer: |
sqlite3_finalize(pQuery); |
sqlite3_free(zQuery); |
} |
|
/* |
** Open a new database file named "zNewDb". Try to recover as much information |
** as possible out of the main database (which might be corrupt) and write it |
** into zNewDb. |
*/ |
static void tryToClone(ShellState *p, const char *zNewDb){ |
int rc; |
sqlite3 *newDb = 0; |
if( access(zNewDb,0)==0 ){ |
utf8_printf(stderr, "File \"%s\" already exists.\n", zNewDb); |
return; |
} |
rc = sqlite3_open(zNewDb, &newDb); |
if( rc ){ |
utf8_printf(stderr, "Cannot create output database: %s\n", |
sqlite3_errmsg(newDb)); |
}else{ |
sqlite3_exec(p->db, "PRAGMA writable_schema=ON;", 0, 0, 0); |
sqlite3_exec(newDb, "BEGIN EXCLUSIVE;", 0, 0, 0); |
tryToCloneSchema(p, newDb, "type='table'", tryToCloneData); |
tryToCloneSchema(p, newDb, "type!='table'", 0); |
sqlite3_exec(newDb, "COMMIT;", 0, 0, 0); |
sqlite3_exec(p->db, "PRAGMA writable_schema=OFF;", 0, 0, 0); |
} |
close_db(newDb); |
} |
|
/* |
** Change the output file back to stdout. |
** |
** If the p->doXdgOpen flag is set, that means the output was being |
** redirected to a temporary file named by p->zTempFile. In that case, |
** launch start/open/xdg-open on that temporary file. |
*/ |
static void output_reset(ShellState *p){ |
if( p->outfile[0]=='|' ){ |
#ifndef SQLITE_OMIT_POPEN |
pclose(p->out); |
#endif |
}else{ |
output_file_close(p->out); |
#ifndef SQLITE_NOHAVE_SYSTEM |
if( p->doXdgOpen ){ |
const char *zXdgOpenCmd = |
#if defined(_WIN32) |
"start"; |
#elif defined(__APPLE__) |
"open"; |
#else |
"xdg-open"; |
#endif |
char *zCmd; |
zCmd = sqlite3_mprintf("%s %s", zXdgOpenCmd, p->zTempFile); |
if( system(zCmd) ){ |
utf8_printf(stderr, "Failed: [%s]\n", zCmd); |
}else{ |
/* Give the start/open/xdg-open command some time to get |
** going before we continue, and potential delete the |
** p->zTempFile data file out from under it */ |
sqlite3_sleep(2000); |
} |
sqlite3_free(zCmd); |
outputModePop(p); |
p->doXdgOpen = 0; |
} |
#endif /* !defined(SQLITE_NOHAVE_SYSTEM) */ |
} |
p->outfile[0] = 0; |
p->out = stdout; |
} |
|
/* |
** Run an SQL command and return the single integer result. |
*/ |
static int db_int(ShellState *p, const char *zSql){ |
sqlite3_stmt *pStmt; |
int res = 0; |
sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
if( pStmt && sqlite3_step(pStmt)==SQLITE_ROW ){ |
res = sqlite3_column_int(pStmt,0); |
} |
sqlite3_finalize(pStmt); |
return res; |
} |
|
/* |
** Convert a 2-byte or 4-byte big-endian integer into a native integer |
*/ |
static unsigned int get2byteInt(unsigned char *a){ |
return (a[0]<<8) + a[1]; |
} |
static unsigned int get4byteInt(unsigned char *a){ |
return (a[0]<<24) + (a[1]<<16) + (a[2]<<8) + a[3]; |
} |
|
/* |
** Implementation of the ".dbinfo" command. |
** |
** Return 1 on error, 2 to exit, and 0 otherwise. |
*/ |
static int shell_dbinfo_command(ShellState *p, int nArg, char **azArg){ |
static const struct { const char *zName; int ofst; } aField[] = { |
{ "file change counter:", 24 }, |
{ "database page count:", 28 }, |
{ "freelist page count:", 36 }, |
{ "schema cookie:", 40 }, |
{ "schema format:", 44 }, |
{ "default cache size:", 48 }, |
{ "autovacuum top root:", 52 }, |
{ "incremental vacuum:", 64 }, |
{ "text encoding:", 56 }, |
{ "user version:", 60 }, |
{ "application id:", 68 }, |
{ "software version:", 96 }, |
}; |
static const struct { const char *zName; const char *zSql; } aQuery[] = { |
{ "number of tables:", |
"SELECT count(*) FROM %s WHERE type='table'" }, |
{ "number of indexes:", |
"SELECT count(*) FROM %s WHERE type='index'" }, |
{ "number of triggers:", |
"SELECT count(*) FROM %s WHERE type='trigger'" }, |
{ "number of views:", |
"SELECT count(*) FROM %s WHERE type='view'" }, |
{ "schema size:", |
"SELECT total(length(sql)) FROM %s" }, |
}; |
int i, rc; |
unsigned iDataVersion; |
char *zSchemaTab; |
char *zDb = nArg>=2 ? azArg[1] : "main"; |
sqlite3_stmt *pStmt = 0; |
unsigned char aHdr[100]; |
open_db(p, 0); |
if( p->db==0 ) return 1; |
rc = sqlite3_prepare_v2(p->db, |
"SELECT data FROM sqlite_dbpage(?1) WHERE pgno=1", |
-1, &pStmt, 0); |
if( rc ){ |
utf8_printf(stderr, "error: %s\n", sqlite3_errmsg(p->db)); |
sqlite3_finalize(pStmt); |
return 1; |
} |
sqlite3_bind_text(pStmt, 1, zDb, -1, SQLITE_STATIC); |
if( sqlite3_step(pStmt)==SQLITE_ROW |
&& sqlite3_column_bytes(pStmt,0)>100 |
){ |
memcpy(aHdr, sqlite3_column_blob(pStmt,0), 100); |
sqlite3_finalize(pStmt); |
}else{ |
raw_printf(stderr, "unable to read database header\n"); |
sqlite3_finalize(pStmt); |
return 1; |
} |
i = get2byteInt(aHdr+16); |
if( i==1 ) i = 65536; |
utf8_printf(p->out, "%-20s %d\n", "database page size:", i); |
utf8_printf(p->out, "%-20s %d\n", "write format:", aHdr[18]); |
utf8_printf(p->out, "%-20s %d\n", "read format:", aHdr[19]); |
utf8_printf(p->out, "%-20s %d\n", "reserved bytes:", aHdr[20]); |
for(i=0; i<ArraySize(aField); i++){ |
int ofst = aField[i].ofst; |
unsigned int val = get4byteInt(aHdr + ofst); |
utf8_printf(p->out, "%-20s %u", aField[i].zName, val); |
switch( ofst ){ |
case 56: { |
if( val==1 ) raw_printf(p->out, " (utf8)"); |
if( val==2 ) raw_printf(p->out, " (utf16le)"); |
if( val==3 ) raw_printf(p->out, " (utf16be)"); |
} |
} |
raw_printf(p->out, "\n"); |
} |
if( zDb==0 ){ |
zSchemaTab = sqlite3_mprintf("main.sqlite_schema"); |
}else if( strcmp(zDb,"temp")==0 ){ |
zSchemaTab = sqlite3_mprintf("%s", "sqlite_temp_schema"); |
}else{ |
zSchemaTab = sqlite3_mprintf("\"%w\".sqlite_schema", zDb); |
} |
for(i=0; i<ArraySize(aQuery); i++){ |
char *zSql = sqlite3_mprintf(aQuery[i].zSql, zSchemaTab); |
int val = db_int(p, zSql); |
sqlite3_free(zSql); |
utf8_printf(p->out, "%-20s %d\n", aQuery[i].zName, val); |
} |
sqlite3_free(zSchemaTab); |
sqlite3_file_control(p->db, zDb, SQLITE_FCNTL_DATA_VERSION, &iDataVersion); |
utf8_printf(p->out, "%-20s %u\n", "data version", iDataVersion); |
return 0; |
} |
|
/* |
** Print the current sqlite3_errmsg() value to stderr and return 1. |
*/ |
static int shellDatabaseError(sqlite3 *db){ |
const char *zErr = sqlite3_errmsg(db); |
utf8_printf(stderr, "Error: %s\n", zErr); |
return 1; |
} |
|
/* |
** Compare the pattern in zGlob[] against the text in z[]. Return TRUE |
** if they match and FALSE (0) if they do not match. |
** |
** Globbing rules: |
** |
** '*' Matches any sequence of zero or more characters. |
** |
** '?' Matches exactly one character. |
** |
** [...] Matches one character from the enclosed list of |
** characters. |
** |
** [^...] Matches one character not in the enclosed list. |
** |
** '#' Matches any sequence of one or more digits with an |
** optional + or - sign in front |
** |
** ' ' Any span of whitespace matches any other span of |
** whitespace. |
** |
** Extra whitespace at the end of z[] is ignored. |
*/ |
static int testcase_glob(const char *zGlob, const char *z){ |
int c, c2; |
int invert; |
int seen; |
|
while( (c = (*(zGlob++)))!=0 ){ |
if( IsSpace(c) ){ |
if( !IsSpace(*z) ) return 0; |
while( IsSpace(*zGlob) ) zGlob++; |
while( IsSpace(*z) ) z++; |
}else if( c=='*' ){ |
while( (c=(*(zGlob++))) == '*' || c=='?' ){ |
if( c=='?' && (*(z++))==0 ) return 0; |
} |
if( c==0 ){ |
return 1; |
}else if( c=='[' ){ |
while( *z && testcase_glob(zGlob-1,z)==0 ){ |
z++; |
} |
return (*z)!=0; |
} |
while( (c2 = (*(z++)))!=0 ){ |
while( c2!=c ){ |
c2 = *(z++); |
if( c2==0 ) return 0; |
} |
if( testcase_glob(zGlob,z) ) return 1; |
} |
return 0; |
}else if( c=='?' ){ |
if( (*(z++))==0 ) return 0; |
}else if( c=='[' ){ |
int prior_c = 0; |
seen = 0; |
invert = 0; |
c = *(z++); |
if( c==0 ) return 0; |
c2 = *(zGlob++); |
if( c2=='^' ){ |
invert = 1; |
c2 = *(zGlob++); |
} |
if( c2==']' ){ |
if( c==']' ) seen = 1; |
c2 = *(zGlob++); |
} |
while( c2 && c2!=']' ){ |
if( c2=='-' && zGlob[0]!=']' && zGlob[0]!=0 && prior_c>0 ){ |
c2 = *(zGlob++); |
if( c>=prior_c && c<=c2 ) seen = 1; |
prior_c = 0; |
}else{ |
if( c==c2 ){ |
seen = 1; |
} |
prior_c = c2; |
} |
c2 = *(zGlob++); |
} |
if( c2==0 || (seen ^ invert)==0 ) return 0; |
}else if( c=='#' ){ |
if( (z[0]=='-' || z[0]=='+') && IsDigit(z[1]) ) z++; |
if( !IsDigit(z[0]) ) return 0; |
z++; |
while( IsDigit(z[0]) ){ z++; } |
}else{ |
if( c!=(*(z++)) ) return 0; |
} |
} |
while( IsSpace(*z) ){ z++; } |
return *z==0; |
} |
|
|
/* |
** Compare the string as a command-line option with either one or two |
** initial "-" characters. |
*/ |
static int optionMatch(const char *zStr, const char *zOpt){ |
if( zStr[0]!='-' ) return 0; |
zStr++; |
if( zStr[0]=='-' ) zStr++; |
return strcmp(zStr, zOpt)==0; |
} |
|
/* |
** Delete a file. |
*/ |
int shellDeleteFile(const char *zFilename){ |
int rc; |
#ifdef _WIN32 |
wchar_t *z = sqlite3_win32_utf8_to_unicode(zFilename); |
rc = _wunlink(z); |
sqlite3_free(z); |
#else |
rc = unlink(zFilename); |
#endif |
return rc; |
} |
|
/* |
** Try to delete the temporary file (if there is one) and free the |
** memory used to hold the name of the temp file. |
*/ |
static void clearTempFile(ShellState *p){ |
if( p->zTempFile==0 ) return; |
if( p->doXdgOpen ) return; |
if( shellDeleteFile(p->zTempFile) ) return; |
sqlite3_free(p->zTempFile); |
p->zTempFile = 0; |
} |
|
/* |
** Create a new temp file name with the given suffix. |
*/ |
static void newTempFile(ShellState *p, const char *zSuffix){ |
clearTempFile(p); |
sqlite3_free(p->zTempFile); |
p->zTempFile = 0; |
if( p->db ){ |
sqlite3_file_control(p->db, 0, SQLITE_FCNTL_TEMPFILENAME, &p->zTempFile); |
} |
if( p->zTempFile==0 ){ |
/* If p->db is an in-memory database then the TEMPFILENAME file-control |
** will not work and we will need to fallback to guessing */ |
char *zTemp; |
sqlite3_uint64 r; |
sqlite3_randomness(sizeof(r), &r); |
zTemp = getenv("TEMP"); |
if( zTemp==0 ) zTemp = getenv("TMP"); |
if( zTemp==0 ){ |
#ifdef _WIN32 |
zTemp = "\\tmp"; |
#else |
zTemp = "/tmp"; |
#endif |
} |
p->zTempFile = sqlite3_mprintf("%s/temp%llx.%s", zTemp, r, zSuffix); |
}else{ |
p->zTempFile = sqlite3_mprintf("%z.%s", p->zTempFile, zSuffix); |
} |
if( p->zTempFile==0 ){ |
raw_printf(stderr, "out of memory\n"); |
exit(1); |
} |
} |
|
|
/* |
** The implementation of SQL scalar function fkey_collate_clause(), used |
** by the ".lint fkey-indexes" command. This scalar function is always |
** called with four arguments - the parent table name, the parent column name, |
** the child table name and the child column name. |
** |
** fkey_collate_clause('parent-tab', 'parent-col', 'child-tab', 'child-col') |
** |
** If either of the named tables or columns do not exist, this function |
** returns an empty string. An empty string is also returned if both tables |
** and columns exist but have the same default collation sequence. Or, |
** if both exist but the default collation sequences are different, this |
** function returns the string " COLLATE <parent-collation>", where |
** <parent-collation> is the default collation sequence of the parent column. |
*/ |
static void shellFkeyCollateClause( |
sqlite3_context *pCtx, |
int nVal, |
sqlite3_value **apVal |
){ |
sqlite3 *db = sqlite3_context_db_handle(pCtx); |
const char *zParent; |
const char *zParentCol; |
const char *zParentSeq; |
const char *zChild; |
const char *zChildCol; |
const char *zChildSeq = 0; /* Initialize to avoid false-positive warning */ |
int rc; |
|
assert( nVal==4 ); |
zParent = (const char*)sqlite3_value_text(apVal[0]); |
zParentCol = (const char*)sqlite3_value_text(apVal[1]); |
zChild = (const char*)sqlite3_value_text(apVal[2]); |
zChildCol = (const char*)sqlite3_value_text(apVal[3]); |
|
sqlite3_result_text(pCtx, "", -1, SQLITE_STATIC); |
rc = sqlite3_table_column_metadata( |
db, "main", zParent, zParentCol, 0, &zParentSeq, 0, 0, 0 |
); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_table_column_metadata( |
db, "main", zChild, zChildCol, 0, &zChildSeq, 0, 0, 0 |
); |
} |
|
if( rc==SQLITE_OK && sqlite3_stricmp(zParentSeq, zChildSeq) ){ |
char *z = sqlite3_mprintf(" COLLATE %s", zParentSeq); |
sqlite3_result_text(pCtx, z, -1, SQLITE_TRANSIENT); |
sqlite3_free(z); |
} |
} |
|
|
/* |
** The implementation of dot-command ".lint fkey-indexes". |
*/ |
static int lintFkeyIndexes( |
ShellState *pState, /* Current shell tool state */ |
char **azArg, /* Array of arguments passed to dot command */ |
int nArg /* Number of entries in azArg[] */ |
){ |
sqlite3 *db = pState->db; /* Database handle to query "main" db of */ |
FILE *out = pState->out; /* Stream to write non-error output to */ |
int bVerbose = 0; /* If -verbose is present */ |
int bGroupByParent = 0; /* If -groupbyparent is present */ |
int i; /* To iterate through azArg[] */ |
const char *zIndent = ""; /* How much to indent CREATE INDEX by */ |
int rc; /* Return code */ |
sqlite3_stmt *pSql = 0; /* Compiled version of SQL statement below */ |
|
/* |
** This SELECT statement returns one row for each foreign key constraint |
** in the schema of the main database. The column values are: |
** |
** 0. The text of an SQL statement similar to: |
** |
** "EXPLAIN QUERY PLAN SELECT 1 FROM child_table WHERE child_key=?" |
** |
** This SELECT is similar to the one that the foreign keys implementation |
** needs to run internally on child tables. If there is an index that can |
** be used to optimize this query, then it can also be used by the FK |
** implementation to optimize DELETE or UPDATE statements on the parent |
** table. |
** |
** 1. A GLOB pattern suitable for sqlite3_strglob(). If the plan output by |
** the EXPLAIN QUERY PLAN command matches this pattern, then the schema |
** contains an index that can be used to optimize the query. |
** |
** 2. Human readable text that describes the child table and columns. e.g. |
** |
** "child_table(child_key1, child_key2)" |
** |
** 3. Human readable text that describes the parent table and columns. e.g. |
** |
** "parent_table(parent_key1, parent_key2)" |
** |
** 4. A full CREATE INDEX statement for an index that could be used to |
** optimize DELETE or UPDATE statements on the parent table. e.g. |
** |
** "CREATE INDEX child_table_child_key ON child_table(child_key)" |
** |
** 5. The name of the parent table. |
** |
** These six values are used by the C logic below to generate the report. |
*/ |
const char *zSql = |
"SELECT " |
" 'EXPLAIN QUERY PLAN SELECT 1 FROM ' || quote(s.name) || ' WHERE '" |
" || group_concat(quote(s.name) || '.' || quote(f.[from]) || '=?' " |
" || fkey_collate_clause(" |
" f.[table], COALESCE(f.[to], p.[name]), s.name, f.[from]),' AND ')" |
", " |
" 'SEARCH TABLE ' || s.name || ' USING COVERING INDEX*('" |
" || group_concat('*=?', ' AND ') || ')'" |
", " |
" s.name || '(' || group_concat(f.[from], ', ') || ')'" |
", " |
" f.[table] || '(' || group_concat(COALESCE(f.[to], p.[name])) || ')'" |
", " |
" 'CREATE INDEX ' || quote(s.name ||'_'|| group_concat(f.[from], '_'))" |
" || ' ON ' || quote(s.name) || '('" |
" || group_concat(quote(f.[from]) ||" |
" fkey_collate_clause(" |
" f.[table], COALESCE(f.[to], p.[name]), s.name, f.[from]), ', ')" |
" || ');'" |
", " |
" f.[table] " |
"FROM sqlite_schema AS s, pragma_foreign_key_list(s.name) AS f " |
"LEFT JOIN pragma_table_info AS p ON (pk-1=seq AND p.arg=f.[table]) " |
"GROUP BY s.name, f.id " |
"ORDER BY (CASE WHEN ? THEN f.[table] ELSE s.name END)" |
; |
const char *zGlobIPK = "SEARCH TABLE * USING INTEGER PRIMARY KEY (rowid=?)"; |
|
for(i=2; i<nArg; i++){ |
int n = strlen30(azArg[i]); |
if( n>1 && sqlite3_strnicmp("-verbose", azArg[i], n)==0 ){ |
bVerbose = 1; |
} |
else if( n>1 && sqlite3_strnicmp("-groupbyparent", azArg[i], n)==0 ){ |
bGroupByParent = 1; |
zIndent = " "; |
} |
else{ |
raw_printf(stderr, "Usage: %s %s ?-verbose? ?-groupbyparent?\n", |
azArg[0], azArg[1] |
); |
return SQLITE_ERROR; |
} |
} |
|
/* Register the fkey_collate_clause() SQL function */ |
rc = sqlite3_create_function(db, "fkey_collate_clause", 4, SQLITE_UTF8, |
0, shellFkeyCollateClause, 0, 0 |
); |
|
|
if( rc==SQLITE_OK ){ |
rc = sqlite3_prepare_v2(db, zSql, -1, &pSql, 0); |
} |
if( rc==SQLITE_OK ){ |
sqlite3_bind_int(pSql, 1, bGroupByParent); |
} |
|
if( rc==SQLITE_OK ){ |
int rc2; |
char *zPrev = 0; |
while( SQLITE_ROW==sqlite3_step(pSql) ){ |
int res = -1; |
sqlite3_stmt *pExplain = 0; |
const char *zEQP = (const char*)sqlite3_column_text(pSql, 0); |
const char *zGlob = (const char*)sqlite3_column_text(pSql, 1); |
const char *zFrom = (const char*)sqlite3_column_text(pSql, 2); |
const char *zTarget = (const char*)sqlite3_column_text(pSql, 3); |
const char *zCI = (const char*)sqlite3_column_text(pSql, 4); |
const char *zParent = (const char*)sqlite3_column_text(pSql, 5); |
|
rc = sqlite3_prepare_v2(db, zEQP, -1, &pExplain, 0); |
if( rc!=SQLITE_OK ) break; |
if( SQLITE_ROW==sqlite3_step(pExplain) ){ |
const char *zPlan = (const char*)sqlite3_column_text(pExplain, 3); |
res = ( |
0==sqlite3_strglob(zGlob, zPlan) |
|| 0==sqlite3_strglob(zGlobIPK, zPlan) |
); |
} |
rc = sqlite3_finalize(pExplain); |
if( rc!=SQLITE_OK ) break; |
|
if( res<0 ){ |
raw_printf(stderr, "Error: internal error"); |
break; |
}else{ |
if( bGroupByParent |
&& (bVerbose || res==0) |
&& (zPrev==0 || sqlite3_stricmp(zParent, zPrev)) |
){ |
raw_printf(out, "-- Parent table %s\n", zParent); |
sqlite3_free(zPrev); |
zPrev = sqlite3_mprintf("%s", zParent); |
} |
|
if( res==0 ){ |
raw_printf(out, "%s%s --> %s\n", zIndent, zCI, zTarget); |
}else if( bVerbose ){ |
raw_printf(out, "%s/* no extra indexes required for %s -> %s */\n", |
zIndent, zFrom, zTarget |
); |
} |
} |
} |
sqlite3_free(zPrev); |
|
if( rc!=SQLITE_OK ){ |
raw_printf(stderr, "%s\n", sqlite3_errmsg(db)); |
} |
|
rc2 = sqlite3_finalize(pSql); |
if( rc==SQLITE_OK && rc2!=SQLITE_OK ){ |
rc = rc2; |
raw_printf(stderr, "%s\n", sqlite3_errmsg(db)); |
} |
}else{ |
raw_printf(stderr, "%s\n", sqlite3_errmsg(db)); |
} |
|
return rc; |
} |
|
/* |
** Implementation of ".lint" dot command. |
*/ |
static int lintDotCommand( |
ShellState *pState, /* Current shell tool state */ |
char **azArg, /* Array of arguments passed to dot command */ |
int nArg /* Number of entries in azArg[] */ |
){ |
int n; |
n = (nArg>=2 ? strlen30(azArg[1]) : 0); |
if( n<1 || sqlite3_strnicmp(azArg[1], "fkey-indexes", n) ) goto usage; |
return lintFkeyIndexes(pState, azArg, nArg); |
|
usage: |
raw_printf(stderr, "Usage %s sub-command ?switches...?\n", azArg[0]); |
raw_printf(stderr, "Where sub-commands are:\n"); |
raw_printf(stderr, " fkey-indexes\n"); |
return SQLITE_ERROR; |
} |
|
#if !defined SQLITE_OMIT_VIRTUALTABLE |
static void shellPrepare( |
sqlite3 *db, |
int *pRc, |
const char *zSql, |
sqlite3_stmt **ppStmt |
){ |
*ppStmt = 0; |
if( *pRc==SQLITE_OK ){ |
int rc = sqlite3_prepare_v2(db, zSql, -1, ppStmt, 0); |
if( rc!=SQLITE_OK ){ |
raw_printf(stderr, "sql error: %s (%d)\n", |
sqlite3_errmsg(db), sqlite3_errcode(db) |
); |
*pRc = rc; |
} |
} |
} |
|
/* |
** Create a prepared statement using printf-style arguments for the SQL. |
** |
** This routine is could be marked "static". But it is not always used, |
** depending on compile-time options. By omitting the "static", we avoid |
** nuisance compiler warnings about "defined but not used". |
*/ |
void shellPreparePrintf( |
sqlite3 *db, |
int *pRc, |
sqlite3_stmt **ppStmt, |
const char *zFmt, |
... |
){ |
*ppStmt = 0; |
if( *pRc==SQLITE_OK ){ |
va_list ap; |
char *z; |
va_start(ap, zFmt); |
z = sqlite3_vmprintf(zFmt, ap); |
va_end(ap); |
if( z==0 ){ |
*pRc = SQLITE_NOMEM; |
}else{ |
shellPrepare(db, pRc, z, ppStmt); |
sqlite3_free(z); |
} |
} |
} |
|
/* Finalize the prepared statement created using shellPreparePrintf(). |
** |
** This routine is could be marked "static". But it is not always used, |
** depending on compile-time options. By omitting the "static", we avoid |
** nuisance compiler warnings about "defined but not used". |
*/ |
void shellFinalize( |
int *pRc, |
sqlite3_stmt *pStmt |
){ |
if( pStmt ){ |
sqlite3 *db = sqlite3_db_handle(pStmt); |
int rc = sqlite3_finalize(pStmt); |
if( *pRc==SQLITE_OK ){ |
if( rc!=SQLITE_OK ){ |
raw_printf(stderr, "SQL error: %s\n", sqlite3_errmsg(db)); |
} |
*pRc = rc; |
} |
} |
} |
|
/* Reset the prepared statement created using shellPreparePrintf(). |
** |
** This routine is could be marked "static". But it is not always used, |
** depending on compile-time options. By omitting the "static", we avoid |
** nuisance compiler warnings about "defined but not used". |
*/ |
void shellReset( |
int *pRc, |
sqlite3_stmt *pStmt |
){ |
int rc = sqlite3_reset(pStmt); |
if( *pRc==SQLITE_OK ){ |
if( rc!=SQLITE_OK ){ |
sqlite3 *db = sqlite3_db_handle(pStmt); |
raw_printf(stderr, "SQL error: %s\n", sqlite3_errmsg(db)); |
} |
*pRc = rc; |
} |
} |
#endif /* !defined SQLITE_OMIT_VIRTUALTABLE */ |
|
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_HAVE_ZLIB) |
/****************************************************************************** |
** The ".archive" or ".ar" command. |
*/ |
/* |
** Structure representing a single ".ar" command. |
*/ |
typedef struct ArCommand ArCommand; |
struct ArCommand { |
u8 eCmd; /* An AR_CMD_* value */ |
u8 bVerbose; /* True if --verbose */ |
u8 bZip; /* True if the archive is a ZIP */ |
u8 bDryRun; /* True if --dry-run */ |
u8 bAppend; /* True if --append */ |
u8 fromCmdLine; /* Run from -A instead of .archive */ |
int nArg; /* Number of command arguments */ |
char *zSrcTable; /* "sqlar", "zipfile($file)" or "zip" */ |
const char *zFile; /* --file argument, or NULL */ |
const char *zDir; /* --directory argument, or NULL */ |
char **azArg; /* Array of command arguments */ |
ShellState *p; /* Shell state */ |
sqlite3 *db; /* Database containing the archive */ |
}; |
|
/* |
** Print a usage message for the .ar command to stderr and return SQLITE_ERROR. |
*/ |
static int arUsage(FILE *f){ |
showHelp(f,"archive"); |
return SQLITE_ERROR; |
} |
|
/* |
** Print an error message for the .ar command to stderr and return |
** SQLITE_ERROR. |
*/ |
static int arErrorMsg(ArCommand *pAr, const char *zFmt, ...){ |
va_list ap; |
char *z; |
va_start(ap, zFmt); |
z = sqlite3_vmprintf(zFmt, ap); |
va_end(ap); |
utf8_printf(stderr, "Error: %s\n", z); |
if( pAr->fromCmdLine ){ |
utf8_printf(stderr, "Use \"-A\" for more help\n"); |
}else{ |
utf8_printf(stderr, "Use \".archive --help\" for more help\n"); |
} |
sqlite3_free(z); |
return SQLITE_ERROR; |
} |
|
/* |
** Values for ArCommand.eCmd. |
*/ |
#define AR_CMD_CREATE 1 |
#define AR_CMD_UPDATE 2 |
#define AR_CMD_INSERT 3 |
#define AR_CMD_EXTRACT 4 |
#define AR_CMD_LIST 5 |
#define AR_CMD_HELP 6 |
|
/* |
** Other (non-command) switches. |
*/ |
#define AR_SWITCH_VERBOSE 7 |
#define AR_SWITCH_FILE 8 |
#define AR_SWITCH_DIRECTORY 9 |
#define AR_SWITCH_APPEND 10 |
#define AR_SWITCH_DRYRUN 11 |
|
static int arProcessSwitch(ArCommand *pAr, int eSwitch, const char *zArg){ |
switch( eSwitch ){ |
case AR_CMD_CREATE: |
case AR_CMD_EXTRACT: |
case AR_CMD_LIST: |
case AR_CMD_UPDATE: |
case AR_CMD_INSERT: |
case AR_CMD_HELP: |
if( pAr->eCmd ){ |
return arErrorMsg(pAr, "multiple command options"); |
} |
pAr->eCmd = eSwitch; |
break; |
|
case AR_SWITCH_DRYRUN: |
pAr->bDryRun = 1; |
break; |
case AR_SWITCH_VERBOSE: |
pAr->bVerbose = 1; |
break; |
case AR_SWITCH_APPEND: |
pAr->bAppend = 1; |
/* Fall thru into --file */ |
case AR_SWITCH_FILE: |
pAr->zFile = zArg; |
break; |
case AR_SWITCH_DIRECTORY: |
pAr->zDir = zArg; |
break; |
} |
|
return SQLITE_OK; |
} |
|
/* |
** Parse the command line for an ".ar" command. The results are written into |
** structure (*pAr). SQLITE_OK is returned if the command line is parsed |
** successfully, otherwise an error message is written to stderr and |
** SQLITE_ERROR returned. |
*/ |
static int arParseCommand( |
char **azArg, /* Array of arguments passed to dot command */ |
int nArg, /* Number of entries in azArg[] */ |
ArCommand *pAr /* Populate this object */ |
){ |
struct ArSwitch { |
const char *zLong; |
char cShort; |
u8 eSwitch; |
u8 bArg; |
} aSwitch[] = { |
{ "create", 'c', AR_CMD_CREATE, 0 }, |
{ "extract", 'x', AR_CMD_EXTRACT, 0 }, |
{ "insert", 'i', AR_CMD_INSERT, 0 }, |
{ "list", 't', AR_CMD_LIST, 0 }, |
{ "update", 'u', AR_CMD_UPDATE, 0 }, |
{ "help", 'h', AR_CMD_HELP, 0 }, |
{ "verbose", 'v', AR_SWITCH_VERBOSE, 0 }, |
{ "file", 'f', AR_SWITCH_FILE, 1 }, |
{ "append", 'a', AR_SWITCH_APPEND, 1 }, |
{ "directory", 'C', AR_SWITCH_DIRECTORY, 1 }, |
{ "dryrun", 'n', AR_SWITCH_DRYRUN, 0 }, |
}; |
int nSwitch = sizeof(aSwitch) / sizeof(struct ArSwitch); |
struct ArSwitch *pEnd = &aSwitch[nSwitch]; |
|
if( nArg<=1 ){ |
utf8_printf(stderr, "Wrong number of arguments. Usage:\n"); |
return arUsage(stderr); |
}else{ |
char *z = azArg[1]; |
if( z[0]!='-' ){ |
/* Traditional style [tar] invocation */ |
int i; |
int iArg = 2; |
for(i=0; z[i]; i++){ |
const char *zArg = 0; |
struct ArSwitch *pOpt; |
for(pOpt=&aSwitch[0]; pOpt<pEnd; pOpt++){ |
if( z[i]==pOpt->cShort ) break; |
} |
if( pOpt==pEnd ){ |
return arErrorMsg(pAr, "unrecognized option: %c", z[i]); |
} |
if( pOpt->bArg ){ |
if( iArg>=nArg ){ |
return arErrorMsg(pAr, "option requires an argument: %c",z[i]); |
} |
zArg = azArg[iArg++]; |
} |
if( arProcessSwitch(pAr, pOpt->eSwitch, zArg) ) return SQLITE_ERROR; |
} |
pAr->nArg = nArg-iArg; |
if( pAr->nArg>0 ){ |
pAr->azArg = &azArg[iArg]; |
} |
}else{ |
/* Non-traditional invocation */ |
int iArg; |
for(iArg=1; iArg<nArg; iArg++){ |
int n; |
z = azArg[iArg]; |
if( z[0]!='-' ){ |
/* All remaining command line words are command arguments. */ |
pAr->azArg = &azArg[iArg]; |
pAr->nArg = nArg-iArg; |
break; |
} |
n = strlen30(z); |
|
if( z[1]!='-' ){ |
int i; |
/* One or more short options */ |
for(i=1; i<n; i++){ |
const char *zArg = 0; |
struct ArSwitch *pOpt; |
for(pOpt=&aSwitch[0]; pOpt<pEnd; pOpt++){ |
if( z[i]==pOpt->cShort ) break; |
} |
if( pOpt==pEnd ){ |
return arErrorMsg(pAr, "unrecognized option: %c", z[i]); |
} |
if( pOpt->bArg ){ |
if( i<(n-1) ){ |
zArg = &z[i+1]; |
i = n; |
}else{ |
if( iArg>=(nArg-1) ){ |
return arErrorMsg(pAr, "option requires an argument: %c", |
z[i]); |
} |
zArg = azArg[++iArg]; |
} |
} |
if( arProcessSwitch(pAr, pOpt->eSwitch, zArg) ) return SQLITE_ERROR; |
} |
}else if( z[2]=='\0' ){ |
/* A -- option, indicating that all remaining command line words |
** are command arguments. */ |
pAr->azArg = &azArg[iArg+1]; |
pAr->nArg = nArg-iArg-1; |
break; |
}else{ |
/* A long option */ |
const char *zArg = 0; /* Argument for option, if any */ |
struct ArSwitch *pMatch = 0; /* Matching option */ |
struct ArSwitch *pOpt; /* Iterator */ |
for(pOpt=&aSwitch[0]; pOpt<pEnd; pOpt++){ |
const char *zLong = pOpt->zLong; |
if( (n-2)<=strlen30(zLong) && 0==memcmp(&z[2], zLong, n-2) ){ |
if( pMatch ){ |
return arErrorMsg(pAr, "ambiguous option: %s",z); |
}else{ |
pMatch = pOpt; |
} |
} |
} |
|
if( pMatch==0 ){ |
return arErrorMsg(pAr, "unrecognized option: %s", z); |
} |
if( pMatch->bArg ){ |
if( iArg>=(nArg-1) ){ |
return arErrorMsg(pAr, "option requires an argument: %s", z); |
} |
zArg = azArg[++iArg]; |
} |
if( arProcessSwitch(pAr, pMatch->eSwitch, zArg) ) return SQLITE_ERROR; |
} |
} |
} |
} |
|
return SQLITE_OK; |
} |
|
/* |
** This function assumes that all arguments within the ArCommand.azArg[] |
** array refer to archive members, as for the --extract or --list commands. |
** It checks that each of them are present. If any specified file is not |
** present in the archive, an error is printed to stderr and an error |
** code returned. Otherwise, if all specified arguments are present in |
** the archive, SQLITE_OK is returned. |
** |
** This function strips any trailing '/' characters from each argument. |
** This is consistent with the way the [tar] command seems to work on |
** Linux. |
*/ |
static int arCheckEntries(ArCommand *pAr){ |
int rc = SQLITE_OK; |
if( pAr->nArg ){ |
int i, j; |
sqlite3_stmt *pTest = 0; |
|
shellPreparePrintf(pAr->db, &rc, &pTest, |
"SELECT name FROM %s WHERE name=$name", |
pAr->zSrcTable |
); |
j = sqlite3_bind_parameter_index(pTest, "$name"); |
for(i=0; i<pAr->nArg && rc==SQLITE_OK; i++){ |
char *z = pAr->azArg[i]; |
int n = strlen30(z); |
int bOk = 0; |
while( n>0 && z[n-1]=='/' ) n--; |
z[n] = '\0'; |
sqlite3_bind_text(pTest, j, z, -1, SQLITE_STATIC); |
if( SQLITE_ROW==sqlite3_step(pTest) ){ |
bOk = 1; |
} |
shellReset(&rc, pTest); |
if( rc==SQLITE_OK && bOk==0 ){ |
utf8_printf(stderr, "not found in archive: %s\n", z); |
rc = SQLITE_ERROR; |
} |
} |
shellFinalize(&rc, pTest); |
} |
return rc; |
} |
|
/* |
** Format a WHERE clause that can be used against the "sqlar" table to |
** identify all archive members that match the command arguments held |
** in (*pAr). Leave this WHERE clause in (*pzWhere) before returning. |
** The caller is responsible for eventually calling sqlite3_free() on |
** any non-NULL (*pzWhere) value. |
*/ |
static void arWhereClause( |
int *pRc, |
ArCommand *pAr, |
char **pzWhere /* OUT: New WHERE clause */ |
){ |
char *zWhere = 0; |
if( *pRc==SQLITE_OK ){ |
if( pAr->nArg==0 ){ |
zWhere = sqlite3_mprintf("1"); |
}else{ |
int i; |
const char *zSep = ""; |
for(i=0; i<pAr->nArg; i++){ |
const char *z = pAr->azArg[i]; |
zWhere = sqlite3_mprintf( |
"%z%s name = '%q' OR substr(name,1,%d) = '%q/'", |
zWhere, zSep, z, strlen30(z)+1, z |
); |
if( zWhere==0 ){ |
*pRc = SQLITE_NOMEM; |
break; |
} |
zSep = " OR "; |
} |
} |
} |
*pzWhere = zWhere; |
} |
|
/* |
** Implementation of .ar "lisT" command. |
*/ |
static int arListCommand(ArCommand *pAr){ |
const char *zSql = "SELECT %s FROM %s WHERE %s"; |
const char *azCols[] = { |
"name", |
"lsmode(mode), sz, datetime(mtime, 'unixepoch'), name" |
}; |
|
char *zWhere = 0; |
sqlite3_stmt *pSql = 0; |
int rc; |
|
rc = arCheckEntries(pAr); |
arWhereClause(&rc, pAr, &zWhere); |
|
shellPreparePrintf(pAr->db, &rc, &pSql, zSql, azCols[pAr->bVerbose], |
pAr->zSrcTable, zWhere); |
if( pAr->bDryRun ){ |
utf8_printf(pAr->p->out, "%s\n", sqlite3_sql(pSql)); |
}else{ |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pSql) ){ |
if( pAr->bVerbose ){ |
utf8_printf(pAr->p->out, "%s % 10d %s %s\n", |
sqlite3_column_text(pSql, 0), |
sqlite3_column_int(pSql, 1), |
sqlite3_column_text(pSql, 2), |
sqlite3_column_text(pSql, 3) |
); |
}else{ |
utf8_printf(pAr->p->out, "%s\n", sqlite3_column_text(pSql, 0)); |
} |
} |
} |
shellFinalize(&rc, pSql); |
sqlite3_free(zWhere); |
return rc; |
} |
|
|
/* |
** Implementation of .ar "eXtract" command. |
*/ |
static int arExtractCommand(ArCommand *pAr){ |
const char *zSql1 = |
"SELECT " |
" ($dir || name)," |
" writefile(($dir || name), %s, mode, mtime) " |
"FROM %s WHERE (%s) AND (data IS NULL OR $dirOnly = 0)" |
" AND name NOT GLOB '*..[/\\]*'"; |
|
const char *azExtraArg[] = { |
"sqlar_uncompress(data, sz)", |
"data" |
}; |
|
sqlite3_stmt *pSql = 0; |
int rc = SQLITE_OK; |
char *zDir = 0; |
char *zWhere = 0; |
int i, j; |
|
/* If arguments are specified, check that they actually exist within |
** the archive before proceeding. And formulate a WHERE clause to |
** match them. */ |
rc = arCheckEntries(pAr); |
arWhereClause(&rc, pAr, &zWhere); |
|
if( rc==SQLITE_OK ){ |
if( pAr->zDir ){ |
zDir = sqlite3_mprintf("%s/", pAr->zDir); |
}else{ |
zDir = sqlite3_mprintf(""); |
} |
if( zDir==0 ) rc = SQLITE_NOMEM; |
} |
|
shellPreparePrintf(pAr->db, &rc, &pSql, zSql1, |
azExtraArg[pAr->bZip], pAr->zSrcTable, zWhere |
); |
|
if( rc==SQLITE_OK ){ |
j = sqlite3_bind_parameter_index(pSql, "$dir"); |
sqlite3_bind_text(pSql, j, zDir, -1, SQLITE_STATIC); |
|
/* Run the SELECT statement twice. The first time, writefile() is called |
** for all archive members that should be extracted. The second time, |
** only for the directories. This is because the timestamps for |
** extracted directories must be reset after they are populated (as |
** populating them changes the timestamp). */ |
for(i=0; i<2; i++){ |
j = sqlite3_bind_parameter_index(pSql, "$dirOnly"); |
sqlite3_bind_int(pSql, j, i); |
if( pAr->bDryRun ){ |
utf8_printf(pAr->p->out, "%s\n", sqlite3_sql(pSql)); |
}else{ |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pSql) ){ |
if( i==0 && pAr->bVerbose ){ |
utf8_printf(pAr->p->out, "%s\n", sqlite3_column_text(pSql, 0)); |
} |
} |
} |
shellReset(&rc, pSql); |
} |
shellFinalize(&rc, pSql); |
} |
|
sqlite3_free(zDir); |
sqlite3_free(zWhere); |
return rc; |
} |
|
/* |
** Run the SQL statement in zSql. Or if doing a --dryrun, merely print it out. |
*/ |
static int arExecSql(ArCommand *pAr, const char *zSql){ |
int rc; |
if( pAr->bDryRun ){ |
utf8_printf(pAr->p->out, "%s\n", zSql); |
rc = SQLITE_OK; |
}else{ |
char *zErr = 0; |
rc = sqlite3_exec(pAr->db, zSql, 0, 0, &zErr); |
if( zErr ){ |
utf8_printf(stdout, "ERROR: %s\n", zErr); |
sqlite3_free(zErr); |
} |
} |
return rc; |
} |
|
|
/* |
** Implementation of .ar "create", "insert", and "update" commands. |
** |
** create -> Create a new SQL archive |
** insert -> Insert or reinsert all files listed |
** update -> Insert files that have changed or that were not |
** previously in the archive |
** |
** Create the "sqlar" table in the database if it does not already exist. |
** Then add each file in the azFile[] array to the archive. Directories |
** are added recursively. If argument bVerbose is non-zero, a message is |
** printed on stdout for each file archived. |
** |
** The create command is the same as update, except that it drops |
** any existing "sqlar" table before beginning. The "insert" command |
** always overwrites every file named on the command-line, where as |
** "update" only overwrites if the size or mtime or mode has changed. |
*/ |
static int arCreateOrUpdateCommand( |
ArCommand *pAr, /* Command arguments and options */ |
int bUpdate, /* true for a --create. */ |
int bOnlyIfChanged /* Only update if file has changed */ |
){ |
const char *zCreate = |
"CREATE TABLE IF NOT EXISTS sqlar(\n" |
" name TEXT PRIMARY KEY, -- name of the file\n" |
" mode INT, -- access permissions\n" |
" mtime INT, -- last modification time\n" |
" sz INT, -- original file size\n" |
" data BLOB -- compressed content\n" |
")"; |
const char *zDrop = "DROP TABLE IF EXISTS sqlar"; |
const char *zInsertFmt[2] = { |
"REPLACE INTO %s(name,mode,mtime,sz,data)\n" |
" SELECT\n" |
" %s,\n" |
" mode,\n" |
" mtime,\n" |
" CASE substr(lsmode(mode),1,1)\n" |
" WHEN '-' THEN length(data)\n" |
" WHEN 'd' THEN 0\n" |
" ELSE -1 END,\n" |
" sqlar_compress(data)\n" |
" FROM fsdir(%Q,%Q) AS disk\n" |
" WHERE lsmode(mode) NOT LIKE '?%%'%s;" |
, |
"REPLACE INTO %s(name,mode,mtime,data)\n" |
" SELECT\n" |
" %s,\n" |
" mode,\n" |
" mtime,\n" |
" data\n" |
" FROM fsdir(%Q,%Q) AS disk\n" |
" WHERE lsmode(mode) NOT LIKE '?%%'%s;" |
}; |
int i; /* For iterating through azFile[] */ |
int rc; /* Return code */ |
const char *zTab = 0; /* SQL table into which to insert */ |
char *zSql; |
char zTemp[50]; |
char *zExists = 0; |
|
arExecSql(pAr, "PRAGMA page_size=512"); |
rc = arExecSql(pAr, "SAVEPOINT ar;"); |
if( rc!=SQLITE_OK ) return rc; |
zTemp[0] = 0; |
if( pAr->bZip ){ |
/* Initialize the zipfile virtual table, if necessary */ |
if( pAr->zFile ){ |
sqlite3_uint64 r; |
sqlite3_randomness(sizeof(r),&r); |
sqlite3_snprintf(sizeof(zTemp),zTemp,"zip%016llx",r); |
zTab = zTemp; |
zSql = sqlite3_mprintf( |
"CREATE VIRTUAL TABLE temp.%s USING zipfile(%Q)", |
zTab, pAr->zFile |
); |
rc = arExecSql(pAr, zSql); |
sqlite3_free(zSql); |
}else{ |
zTab = "zip"; |
} |
}else{ |
/* Initialize the table for an SQLAR */ |
zTab = "sqlar"; |
if( bUpdate==0 ){ |
rc = arExecSql(pAr, zDrop); |
if( rc!=SQLITE_OK ) goto end_ar_transaction; |
} |
rc = arExecSql(pAr, zCreate); |
} |
if( bOnlyIfChanged ){ |
zExists = sqlite3_mprintf( |
" AND NOT EXISTS(" |
"SELECT 1 FROM %s AS mem" |
" WHERE mem.name=disk.name" |
" AND mem.mtime=disk.mtime" |
" AND mem.mode=disk.mode)", zTab); |
}else{ |
zExists = sqlite3_mprintf(""); |
} |
if( zExists==0 ) rc = SQLITE_NOMEM; |
for(i=0; i<pAr->nArg && rc==SQLITE_OK; i++){ |
char *zSql2 = sqlite3_mprintf(zInsertFmt[pAr->bZip], zTab, |
pAr->bVerbose ? "shell_putsnl(name)" : "name", |
pAr->azArg[i], pAr->zDir, zExists); |
rc = arExecSql(pAr, zSql2); |
sqlite3_free(zSql2); |
} |
end_ar_transaction: |
if( rc!=SQLITE_OK ){ |
sqlite3_exec(pAr->db, "ROLLBACK TO ar; RELEASE ar;", 0, 0, 0); |
}else{ |
rc = arExecSql(pAr, "RELEASE ar;"); |
if( pAr->bZip && pAr->zFile ){ |
zSql = sqlite3_mprintf("DROP TABLE %s", zTemp); |
arExecSql(pAr, zSql); |
sqlite3_free(zSql); |
} |
} |
sqlite3_free(zExists); |
return rc; |
} |
|
/* |
** Implementation of ".ar" dot command. |
*/ |
static int arDotCommand( |
ShellState *pState, /* Current shell tool state */ |
int fromCmdLine, /* True if -A command-line option, not .ar cmd */ |
char **azArg, /* Array of arguments passed to dot command */ |
int nArg /* Number of entries in azArg[] */ |
){ |
ArCommand cmd; |
int rc; |
memset(&cmd, 0, sizeof(cmd)); |
cmd.fromCmdLine = fromCmdLine; |
rc = arParseCommand(azArg, nArg, &cmd); |
if( rc==SQLITE_OK ){ |
int eDbType = SHELL_OPEN_UNSPEC; |
cmd.p = pState; |
cmd.db = pState->db; |
if( cmd.zFile ){ |
eDbType = deduceDatabaseType(cmd.zFile, 1); |
}else{ |
eDbType = pState->openMode; |
} |
if( eDbType==SHELL_OPEN_ZIPFILE ){ |
if( cmd.eCmd==AR_CMD_EXTRACT || cmd.eCmd==AR_CMD_LIST ){ |
if( cmd.zFile==0 ){ |
cmd.zSrcTable = sqlite3_mprintf("zip"); |
}else{ |
cmd.zSrcTable = sqlite3_mprintf("zipfile(%Q)", cmd.zFile); |
} |
} |
cmd.bZip = 1; |
}else if( cmd.zFile ){ |
int flags; |
if( cmd.bAppend ) eDbType = SHELL_OPEN_APPENDVFS; |
if( cmd.eCmd==AR_CMD_CREATE || cmd.eCmd==AR_CMD_INSERT |
|| cmd.eCmd==AR_CMD_UPDATE ){ |
flags = SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE; |
}else{ |
flags = SQLITE_OPEN_READONLY; |
} |
cmd.db = 0; |
if( cmd.bDryRun ){ |
utf8_printf(pState->out, "-- open database '%s'%s\n", cmd.zFile, |
eDbType==SHELL_OPEN_APPENDVFS ? " using 'apndvfs'" : ""); |
} |
rc = sqlite3_open_v2(cmd.zFile, &cmd.db, flags, |
eDbType==SHELL_OPEN_APPENDVFS ? "apndvfs" : 0); |
if( rc!=SQLITE_OK ){ |
utf8_printf(stderr, "cannot open file: %s (%s)\n", |
cmd.zFile, sqlite3_errmsg(cmd.db) |
); |
goto end_ar_command; |
} |
sqlite3_fileio_init(cmd.db, 0, 0); |
sqlite3_sqlar_init(cmd.db, 0, 0); |
sqlite3_create_function(cmd.db, "shell_putsnl", 1, SQLITE_UTF8, cmd.p, |
shellPutsFunc, 0, 0); |
|
} |
if( cmd.zSrcTable==0 && cmd.bZip==0 && cmd.eCmd!=AR_CMD_HELP ){ |
if( cmd.eCmd!=AR_CMD_CREATE |
&& sqlite3_table_column_metadata(cmd.db,0,"sqlar","name",0,0,0,0,0) |
){ |
utf8_printf(stderr, "database does not contain an 'sqlar' table\n"); |
rc = SQLITE_ERROR; |
goto end_ar_command; |
} |
cmd.zSrcTable = sqlite3_mprintf("sqlar"); |
} |
|
switch( cmd.eCmd ){ |
case AR_CMD_CREATE: |
rc = arCreateOrUpdateCommand(&cmd, 0, 0); |
break; |
|
case AR_CMD_EXTRACT: |
rc = arExtractCommand(&cmd); |
break; |
|
case AR_CMD_LIST: |
rc = arListCommand(&cmd); |
break; |
|
case AR_CMD_HELP: |
arUsage(pState->out); |
break; |
|
case AR_CMD_INSERT: |
rc = arCreateOrUpdateCommand(&cmd, 1, 0); |
break; |
|
default: |
assert( cmd.eCmd==AR_CMD_UPDATE ); |
rc = arCreateOrUpdateCommand(&cmd, 1, 1); |
break; |
} |
} |
end_ar_command: |
if( cmd.db!=pState->db ){ |
close_db(cmd.db); |
} |
sqlite3_free(cmd.zSrcTable); |
|
return rc; |
} |
/* End of the ".archive" or ".ar" command logic |
*******************************************************************************/ |
#endif /* !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_HAVE_ZLIB) */ |
|
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_ENABLE_DBPAGE_VTAB) |
/* |
** If (*pRc) is not SQLITE_OK when this function is called, it is a no-op. |
** Otherwise, the SQL statement or statements in zSql are executed using |
** database connection db and the error code written to *pRc before |
** this function returns. |
*/ |
static void shellExec(sqlite3 *db, int *pRc, const char *zSql){ |
int rc = *pRc; |
if( rc==SQLITE_OK ){ |
char *zErr = 0; |
rc = sqlite3_exec(db, zSql, 0, 0, &zErr); |
if( rc!=SQLITE_OK ){ |
raw_printf(stderr, "SQL error: %s\n", zErr); |
} |
*pRc = rc; |
} |
} |
|
/* |
** Like shellExec(), except that zFmt is a printf() style format string. |
*/ |
static void shellExecPrintf(sqlite3 *db, int *pRc, const char *zFmt, ...){ |
char *z = 0; |
if( *pRc==SQLITE_OK ){ |
va_list ap; |
va_start(ap, zFmt); |
z = sqlite3_vmprintf(zFmt, ap); |
va_end(ap); |
if( z==0 ){ |
*pRc = SQLITE_NOMEM; |
}else{ |
shellExec(db, pRc, z); |
} |
sqlite3_free(z); |
} |
} |
|
/* |
** If *pRc is not SQLITE_OK when this function is called, it is a no-op. |
** Otherwise, an attempt is made to allocate, zero and return a pointer |
** to a buffer nByte bytes in size. If an OOM error occurs, *pRc is set |
** to SQLITE_NOMEM and NULL returned. |
*/ |
static void *shellMalloc(int *pRc, sqlite3_int64 nByte){ |
void *pRet = 0; |
if( *pRc==SQLITE_OK ){ |
pRet = sqlite3_malloc64(nByte); |
if( pRet==0 ){ |
*pRc = SQLITE_NOMEM; |
}else{ |
memset(pRet, 0, nByte); |
} |
} |
return pRet; |
} |
|
/* |
** If *pRc is not SQLITE_OK when this function is called, it is a no-op. |
** Otherwise, zFmt is treated as a printf() style string. The result of |
** formatting it along with any trailing arguments is written into a |
** buffer obtained from sqlite3_malloc(), and pointer to which is returned. |
** It is the responsibility of the caller to eventually free this buffer |
** using a call to sqlite3_free(). |
** |
** If an OOM error occurs, (*pRc) is set to SQLITE_NOMEM and a NULL |
** pointer returned. |
*/ |
static char *shellMPrintf(int *pRc, const char *zFmt, ...){ |
char *z = 0; |
if( *pRc==SQLITE_OK ){ |
va_list ap; |
va_start(ap, zFmt); |
z = sqlite3_vmprintf(zFmt, ap); |
va_end(ap); |
if( z==0 ){ |
*pRc = SQLITE_NOMEM; |
} |
} |
return z; |
} |
|
/* |
** When running the ".recover" command, each output table, and the special |
** orphaned row table if it is required, is represented by an instance |
** of the following struct. |
*/ |
typedef struct RecoverTable RecoverTable; |
struct RecoverTable { |
char *zQuoted; /* Quoted version of table name */ |
int nCol; /* Number of columns in table */ |
char **azlCol; /* Array of column lists */ |
int iPk; /* Index of IPK column */ |
}; |
|
/* |
** Free a RecoverTable object allocated by recoverFindTable() or |
** recoverOrphanTable(). |
*/ |
static void recoverFreeTable(RecoverTable *pTab){ |
if( pTab ){ |
sqlite3_free(pTab->zQuoted); |
if( pTab->azlCol ){ |
int i; |
for(i=0; i<=pTab->nCol; i++){ |
sqlite3_free(pTab->azlCol[i]); |
} |
sqlite3_free(pTab->azlCol); |
} |
sqlite3_free(pTab); |
} |
} |
|
/* |
** This function is a no-op if (*pRc) is not SQLITE_OK when it is called. |
** Otherwise, it allocates and returns a RecoverTable object based on the |
** final four arguments passed to this function. It is the responsibility |
** of the caller to eventually free the returned object using |
** recoverFreeTable(). |
*/ |
static RecoverTable *recoverNewTable( |
int *pRc, /* IN/OUT: Error code */ |
const char *zName, /* Name of table */ |
const char *zSql, /* CREATE TABLE statement */ |
int bIntkey, |
int nCol |
){ |
sqlite3 *dbtmp = 0; /* sqlite3 handle for testing CREATE TABLE */ |
int rc = *pRc; |
RecoverTable *pTab = 0; |
|
pTab = (RecoverTable*)shellMalloc(&rc, sizeof(RecoverTable)); |
if( rc==SQLITE_OK ){ |
int nSqlCol = 0; |
int bSqlIntkey = 0; |
sqlite3_stmt *pStmt = 0; |
|
rc = sqlite3_open("", &dbtmp); |
if( rc==SQLITE_OK ){ |
sqlite3_create_function(dbtmp, "shell_idquote", 1, SQLITE_UTF8, 0, |
shellIdQuote, 0, 0); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_exec(dbtmp, "PRAGMA writable_schema = on", 0, 0, 0); |
} |
if( rc==SQLITE_OK ){ |
rc = sqlite3_exec(dbtmp, zSql, 0, 0, 0); |
if( rc==SQLITE_ERROR ){ |
rc = SQLITE_OK; |
goto finished; |
} |
} |
shellPreparePrintf(dbtmp, &rc, &pStmt, |
"SELECT count(*) FROM pragma_table_info(%Q)", zName |
); |
if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ |
nSqlCol = sqlite3_column_int(pStmt, 0); |
} |
shellFinalize(&rc, pStmt); |
|
if( rc!=SQLITE_OK || nSqlCol<nCol ){ |
goto finished; |
} |
|
shellPreparePrintf(dbtmp, &rc, &pStmt, |
"SELECT (" |
" SELECT substr(data,1,1)==X'0D' FROM sqlite_dbpage WHERE pgno=rootpage" |
") FROM sqlite_schema WHERE name = %Q", zName |
); |
if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ |
bSqlIntkey = sqlite3_column_int(pStmt, 0); |
} |
shellFinalize(&rc, pStmt); |
|
if( bIntkey==bSqlIntkey ){ |
int i; |
const char *zPk = "_rowid_"; |
sqlite3_stmt *pPkFinder = 0; |
|
/* If this is an intkey table and there is an INTEGER PRIMARY KEY, |
** set zPk to the name of the PK column, and pTab->iPk to the index |
** of the column, where columns are 0-numbered from left to right. |
** Or, if this is a WITHOUT ROWID table or if there is no IPK column, |
** leave zPk as "_rowid_" and pTab->iPk at -2. */ |
pTab->iPk = -2; |
if( bIntkey ){ |
shellPreparePrintf(dbtmp, &rc, &pPkFinder, |
"SELECT cid, name FROM pragma_table_info(%Q) " |
" WHERE pk=1 AND type='integer' COLLATE nocase" |
" AND NOT EXISTS (SELECT cid FROM pragma_table_info(%Q) WHERE pk=2)" |
, zName, zName |
); |
if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pPkFinder) ){ |
pTab->iPk = sqlite3_column_int(pPkFinder, 0); |
zPk = (const char*)sqlite3_column_text(pPkFinder, 1); |
} |
} |
|
pTab->zQuoted = shellMPrintf(&rc, "\"%w\"", zName); |
pTab->azlCol = (char**)shellMalloc(&rc, sizeof(char*) * (nSqlCol+1)); |
pTab->nCol = nSqlCol; |
|
if( bIntkey ){ |
pTab->azlCol[0] = shellMPrintf(&rc, "\"%w\"", zPk); |
}else{ |
pTab->azlCol[0] = shellMPrintf(&rc, ""); |
} |
i = 1; |
shellPreparePrintf(dbtmp, &rc, &pStmt, |
"SELECT %Q || group_concat(shell_idquote(name), ', ') " |
" FILTER (WHERE cid!=%d) OVER (ORDER BY %s cid) " |
"FROM pragma_table_info(%Q)", |
bIntkey ? ", " : "", pTab->iPk, |
bIntkey ? "" : "(CASE WHEN pk=0 THEN 1000000 ELSE pk END), ", |
zName |
); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ |
const char *zText = (const char*)sqlite3_column_text(pStmt, 0); |
pTab->azlCol[i] = shellMPrintf(&rc, "%s%s", pTab->azlCol[0], zText); |
i++; |
} |
shellFinalize(&rc, pStmt); |
|
shellFinalize(&rc, pPkFinder); |
} |
} |
|
finished: |
sqlite3_close(dbtmp); |
*pRc = rc; |
if( rc!=SQLITE_OK || (pTab && pTab->zQuoted==0) ){ |
recoverFreeTable(pTab); |
pTab = 0; |
} |
return pTab; |
} |
|
/* |
** This function is called to search the schema recovered from the |
** sqlite_schema table of the (possibly) corrupt database as part |
** of a ".recover" command. Specifically, for a table with root page |
** iRoot and at least nCol columns. Additionally, if bIntkey is 0, the |
** table must be a WITHOUT ROWID table, or if non-zero, not one of |
** those. |
** |
** If a table is found, a (RecoverTable*) object is returned. Or, if |
** no such table is found, but bIntkey is false and iRoot is the |
** root page of an index in the recovered schema, then (*pbNoop) is |
** set to true and NULL returned. Or, if there is no such table or |
** index, NULL is returned and (*pbNoop) set to 0, indicating that |
** the caller should write data to the orphans table. |
*/ |
static RecoverTable *recoverFindTable( |
ShellState *pState, /* Shell state object */ |
int *pRc, /* IN/OUT: Error code */ |
int iRoot, /* Root page of table */ |
int bIntkey, /* True for an intkey table */ |
int nCol, /* Number of columns in table */ |
int *pbNoop /* OUT: True if iRoot is root of index */ |
){ |
sqlite3_stmt *pStmt = 0; |
RecoverTable *pRet = 0; |
int bNoop = 0; |
const char *zSql = 0; |
const char *zName = 0; |
|
/* Search the recovered schema for an object with root page iRoot. */ |
shellPreparePrintf(pState->db, pRc, &pStmt, |
"SELECT type, name, sql FROM recovery.schema WHERE rootpage=%d", iRoot |
); |
while( *pRc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ |
const char *zType = (const char*)sqlite3_column_text(pStmt, 0); |
if( bIntkey==0 && sqlite3_stricmp(zType, "index")==0 ){ |
bNoop = 1; |
break; |
} |
if( sqlite3_stricmp(zType, "table")==0 ){ |
zName = (const char*)sqlite3_column_text(pStmt, 1); |
zSql = (const char*)sqlite3_column_text(pStmt, 2); |
pRet = recoverNewTable(pRc, zName, zSql, bIntkey, nCol); |
break; |
} |
} |
|
shellFinalize(pRc, pStmt); |
*pbNoop = bNoop; |
return pRet; |
} |
|
/* |
** Return a RecoverTable object representing the orphans table. |
*/ |
static RecoverTable *recoverOrphanTable( |
ShellState *pState, /* Shell state object */ |
int *pRc, /* IN/OUT: Error code */ |
const char *zLostAndFound, /* Base name for orphans table */ |
int nCol /* Number of user data columns */ |
){ |
RecoverTable *pTab = 0; |
if( nCol>=0 && *pRc==SQLITE_OK ){ |
int i; |
|
/* This block determines the name of the orphan table. The prefered |
** name is zLostAndFound. But if that clashes with another name |
** in the recovered schema, try zLostAndFound_0, zLostAndFound_1 |
** and so on until a non-clashing name is found. */ |
int iTab = 0; |
char *zTab = shellMPrintf(pRc, "%s", zLostAndFound); |
sqlite3_stmt *pTest = 0; |
shellPrepare(pState->db, pRc, |
"SELECT 1 FROM recovery.schema WHERE name=?", &pTest |
); |
if( pTest ) sqlite3_bind_text(pTest, 1, zTab, -1, SQLITE_TRANSIENT); |
while( *pRc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pTest) ){ |
shellReset(pRc, pTest); |
sqlite3_free(zTab); |
zTab = shellMPrintf(pRc, "%s_%d", zLostAndFound, iTab++); |
sqlite3_bind_text(pTest, 1, zTab, -1, SQLITE_TRANSIENT); |
} |
shellFinalize(pRc, pTest); |
|
pTab = (RecoverTable*)shellMalloc(pRc, sizeof(RecoverTable)); |
if( pTab ){ |
pTab->zQuoted = shellMPrintf(pRc, "\"%w\"", zTab); |
pTab->nCol = nCol; |
pTab->iPk = -2; |
if( nCol>0 ){ |
pTab->azlCol = (char**)shellMalloc(pRc, sizeof(char*) * (nCol+1)); |
if( pTab->azlCol ){ |
pTab->azlCol[nCol] = shellMPrintf(pRc, ""); |
for(i=nCol-1; i>=0; i--){ |
pTab->azlCol[i] = shellMPrintf(pRc, "%s, NULL", pTab->azlCol[i+1]); |
} |
} |
} |
|
if( *pRc!=SQLITE_OK ){ |
recoverFreeTable(pTab); |
pTab = 0; |
}else{ |
raw_printf(pState->out, |
"CREATE TABLE %s(rootpgno INTEGER, " |
"pgno INTEGER, nfield INTEGER, id INTEGER", pTab->zQuoted |
); |
for(i=0; i<nCol; i++){ |
raw_printf(pState->out, ", c%d", i); |
} |
raw_printf(pState->out, ");\n"); |
} |
} |
sqlite3_free(zTab); |
} |
return pTab; |
} |
|
/* |
** This function is called to recover data from the database. A script |
** to construct a new database containing all recovered data is output |
** on stream pState->out. |
*/ |
static int recoverDatabaseCmd(ShellState *pState, int nArg, char **azArg){ |
int rc = SQLITE_OK; |
sqlite3_stmt *pLoop = 0; /* Loop through all root pages */ |
sqlite3_stmt *pPages = 0; /* Loop through all pages in a group */ |
sqlite3_stmt *pCells = 0; /* Loop through all cells in a page */ |
const char *zRecoveryDb = ""; /* Name of "recovery" database */ |
const char *zLostAndFound = "lost_and_found"; |
int i; |
int nOrphan = -1; |
RecoverTable *pOrphan = 0; |
|
int bFreelist = 1; /* 0 if --freelist-corrupt is specified */ |
int bRowids = 1; /* 0 if --no-rowids */ |
for(i=1; i<nArg; i++){ |
char *z = azArg[i]; |
int n; |
if( z[0]=='-' && z[1]=='-' ) z++; |
n = strlen30(z); |
if( n<=17 && memcmp("-freelist-corrupt", z, n)==0 ){ |
bFreelist = 0; |
}else |
if( n<=12 && memcmp("-recovery-db", z, n)==0 && i<(nArg-1) ){ |
i++; |
zRecoveryDb = azArg[i]; |
}else |
if( n<=15 && memcmp("-lost-and-found", z, n)==0 && i<(nArg-1) ){ |
i++; |
zLostAndFound = azArg[i]; |
}else |
if( n<=10 && memcmp("-no-rowids", z, n)==0 ){ |
bRowids = 0; |
} |
else{ |
utf8_printf(stderr, "unexpected option: %s\n", azArg[i]); |
showHelp(pState->out, azArg[0]); |
return 1; |
} |
} |
|
shellExecPrintf(pState->db, &rc, |
/* Attach an in-memory database named 'recovery'. Create an indexed |
** cache of the sqlite_dbptr virtual table. */ |
"PRAGMA writable_schema = on;" |
"ATTACH %Q AS recovery;" |
"DROP TABLE IF EXISTS recovery.dbptr;" |
"DROP TABLE IF EXISTS recovery.freelist;" |
"DROP TABLE IF EXISTS recovery.map;" |
"DROP TABLE IF EXISTS recovery.schema;" |
"CREATE TABLE recovery.freelist(pgno INTEGER PRIMARY KEY);", zRecoveryDb |
); |
|
if( bFreelist ){ |
shellExec(pState->db, &rc, |
"WITH trunk(pgno) AS (" |
" SELECT shell_int32(" |
" (SELECT data FROM sqlite_dbpage WHERE pgno=1), 8) AS x " |
" WHERE x>0" |
" UNION" |
" SELECT shell_int32(" |
" (SELECT data FROM sqlite_dbpage WHERE pgno=trunk.pgno), 0) AS x " |
" FROM trunk WHERE x>0" |
")," |
"freelist(data, n, freepgno) AS (" |
" SELECT data, min(16384, shell_int32(data, 1)-1), t.pgno " |
" FROM trunk t, sqlite_dbpage s WHERE s.pgno=t.pgno" |
" UNION ALL" |
" SELECT data, n-1, shell_int32(data, 2+n) " |
" FROM freelist WHERE n>=0" |
")" |
"REPLACE INTO recovery.freelist SELECT freepgno FROM freelist;" |
); |
} |
|
/* If this is an auto-vacuum database, add all pointer-map pages to |
** the freelist table. Do this regardless of whether or not |
** --freelist-corrupt was specified. */ |
shellExec(pState->db, &rc, |
"WITH ptrmap(pgno) AS (" |
" SELECT 2 WHERE shell_int32(" |
" (SELECT data FROM sqlite_dbpage WHERE pgno=1), 13" |
" )" |
" UNION ALL " |
" SELECT pgno+1+(SELECT page_size FROM pragma_page_size)/5 AS pp " |
" FROM ptrmap WHERE pp<=(SELECT page_count FROM pragma_page_count)" |
")" |
"REPLACE INTO recovery.freelist SELECT pgno FROM ptrmap" |
); |
|
shellExec(pState->db, &rc, |
"CREATE TABLE recovery.dbptr(" |
" pgno, child, PRIMARY KEY(child, pgno)" |
") WITHOUT ROWID;" |
"INSERT OR IGNORE INTO recovery.dbptr(pgno, child) " |
" SELECT * FROM sqlite_dbptr" |
" WHERE pgno NOT IN freelist AND child NOT IN freelist;" |
|
/* Delete any pointer to page 1. This ensures that page 1 is considered |
** a root page, regardless of how corrupt the db is. */ |
"DELETE FROM recovery.dbptr WHERE child = 1;" |
|
/* Delete all pointers to any pages that have more than one pointer |
** to them. Such pages will be treated as root pages when recovering |
** data. */ |
"DELETE FROM recovery.dbptr WHERE child IN (" |
" SELECT child FROM recovery.dbptr GROUP BY child HAVING count(*)>1" |
");" |
|
/* Create the "map" table that will (eventually) contain instructions |
** for dealing with each page in the db that contains one or more |
** records. */ |
"CREATE TABLE recovery.map(" |
"pgno INTEGER PRIMARY KEY, maxlen INT, intkey, root INT" |
");" |
|
/* Populate table [map]. If there are circular loops of pages in the |
** database, the following adds all pages in such a loop to the map |
** as individual root pages. This could be handled better. */ |
"WITH pages(i, maxlen) AS (" |
" SELECT page_count, (" |
" SELECT max(field+1) FROM sqlite_dbdata WHERE pgno=page_count" |
" ) FROM pragma_page_count WHERE page_count>0" |
" UNION ALL" |
" SELECT i-1, (" |
" SELECT max(field+1) FROM sqlite_dbdata WHERE pgno=i-1" |
" ) FROM pages WHERE i>=2" |
")" |
"INSERT INTO recovery.map(pgno, maxlen, intkey, root) " |
" SELECT i, maxlen, NULL, (" |
" WITH p(orig, pgno, parent) AS (" |
" SELECT 0, i, (SELECT pgno FROM recovery.dbptr WHERE child=i)" |
" UNION " |
" SELECT i, p.parent, " |
" (SELECT pgno FROM recovery.dbptr WHERE child=p.parent) FROM p" |
" )" |
" SELECT pgno FROM p WHERE (parent IS NULL OR pgno = orig)" |
") " |
"FROM pages WHERE maxlen IS NOT NULL AND i NOT IN freelist;" |
"UPDATE recovery.map AS o SET intkey = (" |
" SELECT substr(data, 1, 1)==X'0D' FROM sqlite_dbpage WHERE pgno=o.pgno" |
");" |
|
/* Extract data from page 1 and any linked pages into table |
** recovery.schema. With the same schema as an sqlite_schema table. */ |
"CREATE TABLE recovery.schema(type, name, tbl_name, rootpage, sql);" |
"INSERT INTO recovery.schema SELECT " |
" max(CASE WHEN field=0 THEN value ELSE NULL END)," |
" max(CASE WHEN field=1 THEN value ELSE NULL END)," |
" max(CASE WHEN field=2 THEN value ELSE NULL END)," |
" max(CASE WHEN field=3 THEN value ELSE NULL END)," |
" max(CASE WHEN field=4 THEN value ELSE NULL END)" |
"FROM sqlite_dbdata WHERE pgno IN (" |
" SELECT pgno FROM recovery.map WHERE root=1" |
")" |
"GROUP BY pgno, cell;" |
"CREATE INDEX recovery.schema_rootpage ON schema(rootpage);" |
); |
|
/* Open a transaction, then print out all non-virtual, non-"sqlite_%" |
** CREATE TABLE statements that extracted from the existing schema. */ |
if( rc==SQLITE_OK ){ |
sqlite3_stmt *pStmt = 0; |
/* ".recover" might output content in an order which causes immediate |
** foreign key constraints to be violated. So disable foreign-key |
** constraint enforcement to prevent problems when running the output |
** script. */ |
raw_printf(pState->out, "PRAGMA foreign_keys=OFF;\n"); |
raw_printf(pState->out, "BEGIN;\n"); |
raw_printf(pState->out, "PRAGMA writable_schema = on;\n"); |
shellPrepare(pState->db, &rc, |
"SELECT sql FROM recovery.schema " |
"WHERE type='table' AND sql LIKE 'create table%'", &pStmt |
); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ |
const char *zCreateTable = (const char*)sqlite3_column_text(pStmt, 0); |
raw_printf(pState->out, "CREATE TABLE IF NOT EXISTS %s;\n", |
&zCreateTable[12] |
); |
} |
shellFinalize(&rc, pStmt); |
} |
|
/* Figure out if an orphan table will be required. And if so, how many |
** user columns it should contain */ |
shellPrepare(pState->db, &rc, |
"SELECT coalesce(max(maxlen), -2) FROM recovery.map WHERE root>1" |
, &pLoop |
); |
if( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pLoop) ){ |
nOrphan = sqlite3_column_int(pLoop, 0); |
} |
shellFinalize(&rc, pLoop); |
pLoop = 0; |
|
shellPrepare(pState->db, &rc, |
"SELECT pgno FROM recovery.map WHERE root=?", &pPages |
); |
|
shellPrepare(pState->db, &rc, |
"SELECT max(field), group_concat(shell_escape_crnl(quote" |
"(case when (? AND field<0) then NULL else value end)" |
"), ', ')" |
", min(field) " |
"FROM sqlite_dbdata WHERE pgno = ? AND field != ?" |
"GROUP BY cell", &pCells |
); |
|
/* Loop through each root page. */ |
shellPrepare(pState->db, &rc, |
"SELECT root, intkey, max(maxlen) FROM recovery.map" |
" WHERE root>1 GROUP BY root, intkey ORDER BY root=(" |
" SELECT rootpage FROM recovery.schema WHERE name='sqlite_sequence'" |
")", &pLoop |
); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pLoop) ){ |
int iRoot = sqlite3_column_int(pLoop, 0); |
int bIntkey = sqlite3_column_int(pLoop, 1); |
int nCol = sqlite3_column_int(pLoop, 2); |
int bNoop = 0; |
RecoverTable *pTab; |
|
assert( bIntkey==0 || bIntkey==1 ); |
pTab = recoverFindTable(pState, &rc, iRoot, bIntkey, nCol, &bNoop); |
if( bNoop || rc ) continue; |
if( pTab==0 ){ |
if( pOrphan==0 ){ |
pOrphan = recoverOrphanTable(pState, &rc, zLostAndFound, nOrphan); |
} |
pTab = pOrphan; |
if( pTab==0 ) break; |
} |
|
if( 0==sqlite3_stricmp(pTab->zQuoted, "\"sqlite_sequence\"") ){ |
raw_printf(pState->out, "DELETE FROM sqlite_sequence;\n"); |
} |
sqlite3_bind_int(pPages, 1, iRoot); |
if( bRowids==0 && pTab->iPk<0 ){ |
sqlite3_bind_int(pCells, 1, 1); |
}else{ |
sqlite3_bind_int(pCells, 1, 0); |
} |
sqlite3_bind_int(pCells, 3, pTab->iPk); |
|
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pPages) ){ |
int iPgno = sqlite3_column_int(pPages, 0); |
sqlite3_bind_int(pCells, 2, iPgno); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pCells) ){ |
int nField = sqlite3_column_int(pCells, 0); |
int iMin = sqlite3_column_int(pCells, 2); |
const char *zVal = (const char*)sqlite3_column_text(pCells, 1); |
|
RecoverTable *pTab2 = pTab; |
if( pTab!=pOrphan && (iMin<0)!=bIntkey ){ |
if( pOrphan==0 ){ |
pOrphan = recoverOrphanTable(pState, &rc, zLostAndFound, nOrphan); |
} |
pTab2 = pOrphan; |
if( pTab2==0 ) break; |
} |
|
nField = nField+1; |
if( pTab2==pOrphan ){ |
raw_printf(pState->out, |
"INSERT INTO %s VALUES(%d, %d, %d, %s%s%s);\n", |
pTab2->zQuoted, iRoot, iPgno, nField, |
iMin<0 ? "" : "NULL, ", zVal, pTab2->azlCol[nField] |
); |
}else{ |
raw_printf(pState->out, "INSERT INTO %s(%s) VALUES( %s );\n", |
pTab2->zQuoted, pTab2->azlCol[nField], zVal |
); |
} |
} |
shellReset(&rc, pCells); |
} |
shellReset(&rc, pPages); |
if( pTab!=pOrphan ) recoverFreeTable(pTab); |
} |
shellFinalize(&rc, pLoop); |
shellFinalize(&rc, pPages); |
shellFinalize(&rc, pCells); |
recoverFreeTable(pOrphan); |
|
/* The rest of the schema */ |
if( rc==SQLITE_OK ){ |
sqlite3_stmt *pStmt = 0; |
shellPrepare(pState->db, &rc, |
"SELECT sql, name FROM recovery.schema " |
"WHERE sql NOT LIKE 'create table%'", &pStmt |
); |
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ |
const char *zSql = (const char*)sqlite3_column_text(pStmt, 0); |
if( sqlite3_strnicmp(zSql, "create virt", 11)==0 ){ |
const char *zName = (const char*)sqlite3_column_text(pStmt, 1); |
char *zPrint = shellMPrintf(&rc, |
"INSERT INTO sqlite_schema VALUES('table', %Q, %Q, 0, %Q)", |
zName, zName, zSql |
); |
raw_printf(pState->out, "%s;\n", zPrint); |
sqlite3_free(zPrint); |
}else{ |
raw_printf(pState->out, "%s;\n", zSql); |
} |
} |
shellFinalize(&rc, pStmt); |
} |
|
if( rc==SQLITE_OK ){ |
raw_printf(pState->out, "PRAGMA writable_schema = off;\n"); |
raw_printf(pState->out, "COMMIT;\n"); |
} |
sqlite3_exec(pState->db, "DETACH recovery", 0, 0, 0); |
return rc; |
} |
#endif /* !(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_ENABLE_DBPAGE_VTAB) */ |
|
|
/* |
** If an input line begins with "." then invoke this routine to |
** process that line. |
** |
** Return 1 on error, 2 to exit, and 0 otherwise. |
*/ |
static int do_meta_command(char *zLine, ShellState *p){ |
int h = 1; |
int nArg = 0; |
int n, c; |
int rc = 0; |
char *azArg[52]; |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
if( p->expert.pExpert ){ |
expertFinish(p, 1, 0); |
} |
#endif |
|
/* Parse the input line into tokens. |
*/ |
while( zLine[h] && nArg<ArraySize(azArg)-1 ){ |
while( IsSpace(zLine[h]) ){ h++; } |
if( zLine[h]==0 ) break; |
if( zLine[h]=='\'' || zLine[h]=='"' ){ |
int delim = zLine[h++]; |
azArg[nArg++] = &zLine[h]; |
while( zLine[h] && zLine[h]!=delim ){ |
if( zLine[h]=='\\' && delim=='"' && zLine[h+1]!=0 ) h++; |
h++; |
} |
if( zLine[h]==delim ){ |
zLine[h++] = 0; |
} |
if( delim=='"' ) resolve_backslashes(azArg[nArg-1]); |
}else{ |
azArg[nArg++] = &zLine[h]; |
while( zLine[h] && !IsSpace(zLine[h]) ){ h++; } |
if( zLine[h] ) zLine[h++] = 0; |
resolve_backslashes(azArg[nArg-1]); |
} |
} |
azArg[nArg] = 0; |
|
/* Process the input line. |
*/ |
if( nArg==0 ) return 0; /* no tokens, no error */ |
n = strlen30(azArg[0]); |
c = azArg[0][0]; |
clearTempFile(p); |
|
#ifndef SQLITE_OMIT_AUTHORIZATION |
if( c=='a' && strncmp(azArg[0], "auth", n)==0 ){ |
if( nArg!=2 ){ |
raw_printf(stderr, "Usage: .auth ON|OFF\n"); |
rc = 1; |
goto meta_command_exit; |
} |
open_db(p, 0); |
if( booleanValue(azArg[1]) ){ |
sqlite3_set_authorizer(p->db, shellAuth, p); |
}else{ |
sqlite3_set_authorizer(p->db, 0, 0); |
} |
}else |
#endif |
|
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_HAVE_ZLIB) |
if( c=='a' && strncmp(azArg[0], "archive", n)==0 ){ |
open_db(p, 0); |
rc = arDotCommand(p, 0, azArg, nArg); |
}else |
#endif |
|
if( (c=='b' && n>=3 && strncmp(azArg[0], "backup", n)==0) |
|| (c=='s' && n>=3 && strncmp(azArg[0], "save", n)==0) |
){ |
const char *zDestFile = 0; |
const char *zDb = 0; |
sqlite3 *pDest; |
sqlite3_backup *pBackup; |
int j; |
int bAsync = 0; |
const char *zVfs = 0; |
for(j=1; j<nArg; j++){ |
const char *z = azArg[j]; |
if( z[0]=='-' ){ |
if( z[1]=='-' ) z++; |
if( strcmp(z, "-append")==0 ){ |
zVfs = "apndvfs"; |
}else |
if( strcmp(z, "-async")==0 ){ |
bAsync = 1; |
}else |
{ |
utf8_printf(stderr, "unknown option: %s\n", azArg[j]); |
return 1; |
} |
}else if( zDestFile==0 ){ |
zDestFile = azArg[j]; |
}else if( zDb==0 ){ |
zDb = zDestFile; |
zDestFile = azArg[j]; |
}else{ |
raw_printf(stderr, "Usage: .backup ?DB? ?OPTIONS? FILENAME\n"); |
return 1; |
} |
} |
if( zDestFile==0 ){ |
raw_printf(stderr, "missing FILENAME argument on .backup\n"); |
return 1; |
} |
if( zDb==0 ) zDb = "main"; |
rc = sqlite3_open_v2(zDestFile, &pDest, |
SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE, zVfs); |
if( rc!=SQLITE_OK ){ |
utf8_printf(stderr, "Error: cannot open \"%s\"\n", zDestFile); |
close_db(pDest); |
return 1; |
} |
if( bAsync ){ |
sqlite3_exec(pDest, "PRAGMA synchronous=OFF; PRAGMA journal_mode=OFF;", |
0, 0, 0); |
} |
open_db(p, 0); |
pBackup = sqlite3_backup_init(pDest, "main", p->db, zDb); |
if( pBackup==0 ){ |
utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(pDest)); |
close_db(pDest); |
return 1; |
} |
while( (rc = sqlite3_backup_step(pBackup,100))==SQLITE_OK ){} |
sqlite3_backup_finish(pBackup); |
if( rc==SQLITE_DONE ){ |
rc = 0; |
}else{ |
utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(pDest)); |
rc = 1; |
} |
close_db(pDest); |
}else |
|
if( c=='b' && n>=3 && strncmp(azArg[0], "bail", n)==0 ){ |
if( nArg==2 ){ |
bail_on_error = booleanValue(azArg[1]); |
}else{ |
raw_printf(stderr, "Usage: .bail on|off\n"); |
rc = 1; |
} |
}else |
|
if( c=='b' && n>=3 && strncmp(azArg[0], "binary", n)==0 ){ |
if( nArg==2 ){ |
if( booleanValue(azArg[1]) ){ |
setBinaryMode(p->out, 1); |
}else{ |
setTextMode(p->out, 1); |
} |
}else{ |
raw_printf(stderr, "Usage: .binary on|off\n"); |
rc = 1; |
} |
}else |
|
if( c=='c' && strcmp(azArg[0],"cd")==0 ){ |
if( nArg==2 ){ |
#if defined(_WIN32) || defined(WIN32) |
wchar_t *z = sqlite3_win32_utf8_to_unicode(azArg[1]); |
rc = !SetCurrentDirectoryW(z); |
sqlite3_free(z); |
#else |
rc = chdir(azArg[1]); |
#endif |
if( rc ){ |
utf8_printf(stderr, "Cannot change to directory \"%s\"\n", azArg[1]); |
rc = 1; |
} |
}else{ |
raw_printf(stderr, "Usage: .cd DIRECTORY\n"); |
rc = 1; |
} |
}else |
|
/* The undocumented ".breakpoint" command causes a call to the no-op |
** routine named test_breakpoint(). |
*/ |
if( c=='b' && n>=3 && strncmp(azArg[0], "breakpoint", n)==0 ){ |
test_breakpoint(); |
}else |
|
if( c=='c' && n>=3 && strncmp(azArg[0], "changes", n)==0 ){ |
if( nArg==2 ){ |
setOrClearFlag(p, SHFLG_CountChanges, azArg[1]); |
}else{ |
raw_printf(stderr, "Usage: .changes on|off\n"); |
rc = 1; |
} |
}else |
|
/* Cancel output redirection, if it is currently set (by .testcase) |
** Then read the content of the testcase-out.txt file and compare against |
** azArg[1]. If there are differences, report an error and exit. |
*/ |
if( c=='c' && n>=3 && strncmp(azArg[0], "check", n)==0 ){ |
char *zRes = 0; |
output_reset(p); |
if( nArg!=2 ){ |
raw_printf(stderr, "Usage: .check GLOB-PATTERN\n"); |
rc = 2; |
}else if( (zRes = readFile("testcase-out.txt", 0))==0 ){ |
raw_printf(stderr, "Error: cannot read 'testcase-out.txt'\n"); |
rc = 2; |
}else if( testcase_glob(azArg[1],zRes)==0 ){ |
utf8_printf(stderr, |
"testcase-%s FAILED\n Expected: [%s]\n Got: [%s]\n", |
p->zTestcase, azArg[1], zRes); |
rc = 1; |
}else{ |
utf8_printf(stdout, "testcase-%s ok\n", p->zTestcase); |
p->nCheck++; |
} |
sqlite3_free(zRes); |
}else |
|
if( c=='c' && strncmp(azArg[0], "clone", n)==0 ){ |
if( nArg==2 ){ |
tryToClone(p, azArg[1]); |
}else{ |
raw_printf(stderr, "Usage: .clone FILENAME\n"); |
rc = 1; |
} |
}else |
|
if( c=='d' && n>1 && strncmp(azArg[0], "databases", n)==0 ){ |
char **azName = 0; |
int nName = 0; |
sqlite3_stmt *pStmt; |
int i; |
open_db(p, 0); |
rc = sqlite3_prepare_v2(p->db, "PRAGMA database_list", -1, &pStmt, 0); |
if( rc ){ |
utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); |
rc = 1; |
}else{ |
while( sqlite3_step(pStmt)==SQLITE_ROW ){ |
const char *zSchema = (const char *)sqlite3_column_text(pStmt,1); |
const char *zFile = (const char*)sqlite3_column_text(pStmt,2); |
azName = sqlite3_realloc(azName, (nName+1)*2*sizeof(char*)); |
if( azName==0 ){ shell_out_of_memory(); /* Does not return */ } |
azName[nName*2] = strdup(zSchema); |
azName[nName*2+1] = strdup(zFile); |
nName++; |
} |
} |
sqlite3_finalize(pStmt); |
for(i=0; i<nName; i++){ |
int eTxn = sqlite3_txn_state(p->db, azName[i*2]); |
int bRdonly = sqlite3_db_readonly(p->db, azName[i*2]); |
const char *z = azName[i*2+1]; |
utf8_printf(p->out, "%s: %s %s%s\n", |
azName[i*2], |
z && z[0] ? z : "\"\"", |
bRdonly ? "r/o" : "r/w", |
eTxn==SQLITE_TXN_NONE ? "" : |
eTxn==SQLITE_TXN_READ ? " read-txn" : " write-txn"); |
free(azName[i*2]); |
free(azName[i*2+1]); |
} |
sqlite3_free(azName); |
}else |
|
if( c=='d' && n>=3 && strncmp(azArg[0], "dbconfig", n)==0 ){ |
static const struct DbConfigChoices { |
const char *zName; |
int op; |
} aDbConfig[] = { |
{ "defensive", SQLITE_DBCONFIG_DEFENSIVE }, |
{ "dqs_ddl", SQLITE_DBCONFIG_DQS_DDL }, |
{ "dqs_dml", SQLITE_DBCONFIG_DQS_DML }, |
{ "enable_fkey", SQLITE_DBCONFIG_ENABLE_FKEY }, |
{ "enable_qpsg", SQLITE_DBCONFIG_ENABLE_QPSG }, |
{ "enable_trigger", SQLITE_DBCONFIG_ENABLE_TRIGGER }, |
{ "enable_view", SQLITE_DBCONFIG_ENABLE_VIEW }, |
{ "fts3_tokenizer", SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER }, |
{ "legacy_alter_table", SQLITE_DBCONFIG_LEGACY_ALTER_TABLE }, |
{ "legacy_file_format", SQLITE_DBCONFIG_LEGACY_FILE_FORMAT }, |
{ "load_extension", SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION }, |
{ "no_ckpt_on_close", SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE }, |
{ "reset_database", SQLITE_DBCONFIG_RESET_DATABASE }, |
{ "trigger_eqp", SQLITE_DBCONFIG_TRIGGER_EQP }, |
{ "trusted_schema", SQLITE_DBCONFIG_TRUSTED_SCHEMA }, |
{ "writable_schema", SQLITE_DBCONFIG_WRITABLE_SCHEMA }, |
}; |
int ii, v; |
open_db(p, 0); |
for(ii=0; ii<ArraySize(aDbConfig); ii++){ |
if( nArg>1 && strcmp(azArg[1], aDbConfig[ii].zName)!=0 ) continue; |
if( nArg>=3 ){ |
sqlite3_db_config(p->db, aDbConfig[ii].op, booleanValue(azArg[2]), 0); |
} |
sqlite3_db_config(p->db, aDbConfig[ii].op, -1, &v); |
utf8_printf(p->out, "%19s %s\n", aDbConfig[ii].zName, v ? "on" : "off"); |
if( nArg>1 ) break; |
} |
if( nArg>1 && ii==ArraySize(aDbConfig) ){ |
utf8_printf(stderr, "Error: unknown dbconfig \"%s\"\n", azArg[1]); |
utf8_printf(stderr, "Enter \".dbconfig\" with no arguments for a list\n"); |
} |
}else |
|
if( c=='d' && n>=3 && strncmp(azArg[0], "dbinfo", n)==0 ){ |
rc = shell_dbinfo_command(p, nArg, azArg); |
}else |
|
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_ENABLE_DBPAGE_VTAB) |
if( c=='r' && strncmp(azArg[0], "recover", n)==0 ){ |
open_db(p, 0); |
rc = recoverDatabaseCmd(p, nArg, azArg); |
}else |
#endif /* !(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_ENABLE_DBPAGE_VTAB) */ |
|
if( c=='d' && strncmp(azArg[0], "dump", n)==0 ){ |
char *zLike = 0; |
char *zSql; |
int i; |
int savedShowHeader = p->showHeader; |
int savedShellFlags = p->shellFlgs; |
ShellClearFlag(p, |
SHFLG_PreserveRowid|SHFLG_Newlines|SHFLG_Echo |
|SHFLG_DumpDataOnly|SHFLG_DumpNoSys); |
for(i=1; i<nArg; i++){ |
if( azArg[i][0]=='-' ){ |
const char *z = azArg[i]+1; |
if( z[0]=='-' ) z++; |
if( strcmp(z,"preserve-rowids")==0 ){ |
#ifdef SQLITE_OMIT_VIRTUALTABLE |
raw_printf(stderr, "The --preserve-rowids option is not compatible" |
" with SQLITE_OMIT_VIRTUALTABLE\n"); |
rc = 1; |
sqlite3_free(zLike); |
goto meta_command_exit; |
#else |
ShellSetFlag(p, SHFLG_PreserveRowid); |
#endif |
}else |
if( strcmp(z,"newlines")==0 ){ |
ShellSetFlag(p, SHFLG_Newlines); |
}else |
if( strcmp(z,"data-only")==0 ){ |
ShellSetFlag(p, SHFLG_DumpDataOnly); |
}else |
if( strcmp(z,"nosys")==0 ){ |
ShellSetFlag(p, SHFLG_DumpNoSys); |
}else |
{ |
raw_printf(stderr, "Unknown option \"%s\" on \".dump\"\n", azArg[i]); |
rc = 1; |
sqlite3_free(zLike); |
goto meta_command_exit; |
} |
}else if( zLike ){ |
zLike = sqlite3_mprintf("%z OR name LIKE %Q ESCAPE '\\'", |
zLike, azArg[i]); |
}else{ |
zLike = sqlite3_mprintf("name LIKE %Q ESCAPE '\\'", azArg[i]); |
} |
} |
|
open_db(p, 0); |
|
if( (p->shellFlgs & SHFLG_DumpDataOnly)==0 ){ |
/* When playing back a "dump", the content might appear in an order |
** which causes immediate foreign key constraints to be violated. |
** So disable foreign-key constraint enforcement to prevent problems. */ |
raw_printf(p->out, "PRAGMA foreign_keys=OFF;\n"); |
raw_printf(p->out, "BEGIN TRANSACTION;\n"); |
} |
p->writableSchema = 0; |
p->showHeader = 0; |
/* Set writable_schema=ON since doing so forces SQLite to initialize |
** as much of the schema as it can even if the sqlite_schema table is |
** corrupt. */ |
sqlite3_exec(p->db, "SAVEPOINT dump; PRAGMA writable_schema=ON", 0, 0, 0); |
p->nErr = 0; |
if( zLike==0 ) zLike = sqlite3_mprintf("true"); |
zSql = sqlite3_mprintf( |
"SELECT name, type, sql FROM sqlite_schema " |
"WHERE (%s) AND type=='table'" |
" AND sql NOT NULL" |
" ORDER BY tbl_name='sqlite_sequence', rowid", |
zLike |
); |
run_schema_dump_query(p,zSql); |
sqlite3_free(zSql); |
if( (p->shellFlgs & SHFLG_DumpDataOnly)==0 ){ |
zSql = sqlite3_mprintf( |
"SELECT sql FROM sqlite_schema " |
"WHERE (%s) AND sql NOT NULL" |
" AND type IN ('index','trigger','view')", |
zLike |
); |
run_table_dump_query(p, zSql); |
sqlite3_free(zSql); |
} |
sqlite3_free(zLike); |
if( p->writableSchema ){ |
raw_printf(p->out, "PRAGMA writable_schema=OFF;\n"); |
p->writableSchema = 0; |
} |
sqlite3_exec(p->db, "PRAGMA writable_schema=OFF;", 0, 0, 0); |
sqlite3_exec(p->db, "RELEASE dump;", 0, 0, 0); |
if( (p->shellFlgs & SHFLG_DumpDataOnly)==0 ){ |
raw_printf(p->out, p->nErr?"ROLLBACK; -- due to errors\n":"COMMIT;\n"); |
} |
p->showHeader = savedShowHeader; |
p->shellFlgs = savedShellFlags; |
}else |
|
if( c=='e' && strncmp(azArg[0], "echo", n)==0 ){ |
if( nArg==2 ){ |
setOrClearFlag(p, SHFLG_Echo, azArg[1]); |
}else{ |
raw_printf(stderr, "Usage: .echo on|off\n"); |
rc = 1; |
} |
}else |
|
if( c=='e' && strncmp(azArg[0], "eqp", n)==0 ){ |
if( nArg==2 ){ |
p->autoEQPtest = 0; |
if( p->autoEQPtrace ){ |
if( p->db ) sqlite3_exec(p->db, "PRAGMA vdbe_trace=OFF;", 0, 0, 0); |
p->autoEQPtrace = 0; |
} |
if( strcmp(azArg[1],"full")==0 ){ |
p->autoEQP = AUTOEQP_full; |
}else if( strcmp(azArg[1],"trigger")==0 ){ |
p->autoEQP = AUTOEQP_trigger; |
#ifdef SQLITE_DEBUG |
}else if( strcmp(azArg[1],"test")==0 ){ |
p->autoEQP = AUTOEQP_on; |
p->autoEQPtest = 1; |
}else if( strcmp(azArg[1],"trace")==0 ){ |
p->autoEQP = AUTOEQP_full; |
p->autoEQPtrace = 1; |
open_db(p, 0); |
sqlite3_exec(p->db, "SELECT name FROM sqlite_schema LIMIT 1", 0, 0, 0); |
sqlite3_exec(p->db, "PRAGMA vdbe_trace=ON;", 0, 0, 0); |
#endif |
}else{ |
p->autoEQP = (u8)booleanValue(azArg[1]); |
} |
}else{ |
raw_printf(stderr, "Usage: .eqp off|on|trace|trigger|full\n"); |
rc = 1; |
} |
}else |
|
if( c=='e' && strncmp(azArg[0], "exit", n)==0 ){ |
if( nArg>1 && (rc = (int)integerValue(azArg[1]))!=0 ) exit(rc); |
rc = 2; |
}else |
|
/* The ".explain" command is automatic now. It is largely pointless. It |
** retained purely for backwards compatibility */ |
if( c=='e' && strncmp(azArg[0], "explain", n)==0 ){ |
int val = 1; |
if( nArg>=2 ){ |
if( strcmp(azArg[1],"auto")==0 ){ |
val = 99; |
}else{ |
val = booleanValue(azArg[1]); |
} |
} |
if( val==1 && p->mode!=MODE_Explain ){ |
p->normalMode = p->mode; |
p->mode = MODE_Explain; |
p->autoExplain = 0; |
}else if( val==0 ){ |
if( p->mode==MODE_Explain ) p->mode = p->normalMode; |
p->autoExplain = 0; |
}else if( val==99 ){ |
if( p->mode==MODE_Explain ) p->mode = p->normalMode; |
p->autoExplain = 1; |
} |
}else |
|
#ifndef SQLITE_OMIT_VIRTUALTABLE |
if( c=='e' && strncmp(azArg[0], "expert", n)==0 ){ |
open_db(p, 0); |
expertDotCommand(p, azArg, nArg); |
}else |
#endif |
|
if( c=='f' && strncmp(azArg[0], "filectrl", n)==0 ){ |
static const struct { |
const char *zCtrlName; /* Name of a test-control option */ |
int ctrlCode; /* Integer code for that option */ |
const char *zUsage; /* Usage notes */ |
} aCtrl[] = { |
{ "chunk_size", SQLITE_FCNTL_CHUNK_SIZE, "SIZE" }, |
{ "data_version", SQLITE_FCNTL_DATA_VERSION, "" }, |
{ "has_moved", SQLITE_FCNTL_HAS_MOVED, "" }, |
{ "lock_timeout", SQLITE_FCNTL_LOCK_TIMEOUT, "MILLISEC" }, |
{ "persist_wal", SQLITE_FCNTL_PERSIST_WAL, "[BOOLEAN]" }, |
/* { "pragma", SQLITE_FCNTL_PRAGMA, "NAME ARG" },*/ |
{ "psow", SQLITE_FCNTL_POWERSAFE_OVERWRITE, "[BOOLEAN]" }, |
{ "reserve_bytes", SQLITE_FCNTL_RESERVE_BYTES, "[N]" }, |
{ "size_limit", SQLITE_FCNTL_SIZE_LIMIT, "[LIMIT]" }, |
{ "tempfilename", SQLITE_FCNTL_TEMPFILENAME, "" }, |
/* { "win32_av_retry", SQLITE_FCNTL_WIN32_AV_RETRY, "COUNT DELAY" },*/ |
}; |
int filectrl = -1; |
int iCtrl = -1; |
sqlite3_int64 iRes = 0; /* Integer result to display if rc2==1 */ |
int isOk = 0; /* 0: usage 1: %lld 2: no-result */ |
int n2, i; |
const char *zCmd = 0; |
const char *zSchema = 0; |
|
open_db(p, 0); |
zCmd = nArg>=2 ? azArg[1] : "help"; |
|
if( zCmd[0]=='-' |
&& (strcmp(zCmd,"--schema")==0 || strcmp(zCmd,"-schema")==0) |
&& nArg>=4 |
){ |
zSchema = azArg[2]; |
for(i=3; i<nArg; i++) azArg[i-2] = azArg[i]; |
nArg -= 2; |
zCmd = azArg[1]; |
} |
|
/* The argument can optionally begin with "-" or "--" */ |
if( zCmd[0]=='-' && zCmd[1] ){ |
zCmd++; |
if( zCmd[0]=='-' && zCmd[1] ) zCmd++; |
} |
|
/* --help lists all file-controls */ |
if( strcmp(zCmd,"help")==0 ){ |
utf8_printf(p->out, "Available file-controls:\n"); |
for(i=0; i<ArraySize(aCtrl); i++){ |
utf8_printf(p->out, " .filectrl %s %s\n", |
aCtrl[i].zCtrlName, aCtrl[i].zUsage); |
} |
rc = 1; |
goto meta_command_exit; |
} |
|
/* convert filectrl text option to value. allow any unique prefix |
** of the option name, or a numerical value. */ |
n2 = strlen30(zCmd); |
for(i=0; i<ArraySize(aCtrl); i++){ |
if( strncmp(zCmd, aCtrl[i].zCtrlName, n2)==0 ){ |
if( filectrl<0 ){ |
filectrl = aCtrl[i].ctrlCode; |
iCtrl = i; |
}else{ |
utf8_printf(stderr, "Error: ambiguous file-control: \"%s\"\n" |
"Use \".filectrl --help\" for help\n", zCmd); |
rc = 1; |
goto meta_command_exit; |
} |
} |
} |
if( filectrl<0 ){ |
utf8_printf(stderr,"Error: unknown file-control: %s\n" |
"Use \".filectrl --help\" for help\n", zCmd); |
}else{ |
switch(filectrl){ |
case SQLITE_FCNTL_SIZE_LIMIT: { |
if( nArg!=2 && nArg!=3 ) break; |
iRes = nArg==3 ? integerValue(azArg[2]) : -1; |
sqlite3_file_control(p->db, zSchema, SQLITE_FCNTL_SIZE_LIMIT, &iRes); |
isOk = 1; |
break; |
} |
case SQLITE_FCNTL_LOCK_TIMEOUT: |
case SQLITE_FCNTL_CHUNK_SIZE: { |
int x; |
if( nArg!=3 ) break; |
x = (int)integerValue(azArg[2]); |
sqlite3_file_control(p->db, zSchema, filectrl, &x); |
isOk = 2; |
break; |
} |
case SQLITE_FCNTL_PERSIST_WAL: |
case SQLITE_FCNTL_POWERSAFE_OVERWRITE: { |
int x; |
if( nArg!=2 && nArg!=3 ) break; |
x = nArg==3 ? booleanValue(azArg[2]) : -1; |
sqlite3_file_control(p->db, zSchema, filectrl, &x); |
iRes = x; |
isOk = 1; |
break; |
} |
case SQLITE_FCNTL_DATA_VERSION: |
case SQLITE_FCNTL_HAS_MOVED: { |
int x; |
if( nArg!=2 ) break; |
sqlite3_file_control(p->db, zSchema, filectrl, &x); |
iRes = x; |
isOk = 1; |
break; |
} |
case SQLITE_FCNTL_TEMPFILENAME: { |
char *z = 0; |
if( nArg!=2 ) break; |
sqlite3_file_control(p->db, zSchema, filectrl, &z); |
if( z ){ |
utf8_printf(p->out, "%s\n", z); |
sqlite3_free(z); |
} |
isOk = 2; |
break; |
} |
case SQLITE_FCNTL_RESERVE_BYTES: { |
int x; |
if( nArg>=3 ){ |
x = atoi(azArg[2]); |
sqlite3_file_control(p->db, zSchema, filectrl, &x); |
} |
x = -1; |
sqlite3_file_control(p->db, zSchema, filectrl, &x); |
utf8_printf(p->out,"%d\n", x); |
isOk = 2; |
break; |
} |
} |
} |
if( isOk==0 && iCtrl>=0 ){ |
utf8_printf(p->out, "Usage: .filectrl %s %s\n", zCmd,aCtrl[iCtrl].zUsage); |
rc = 1; |
}else if( isOk==1 ){ |
char zBuf[100]; |
sqlite3_snprintf(sizeof(zBuf), zBuf, "%lld", iRes); |
raw_printf(p->out, "%s\n", zBuf); |
} |
}else |
|
if( c=='f' && strncmp(azArg[0], "fullschema", n)==0 ){ |
ShellState data; |
char *zErrMsg = 0; |
int doStats = 0; |
memcpy(&data, p, sizeof(data)); |
data.showHeader = 0; |
data.cMode = data.mode = MODE_Semi; |
if( nArg==2 && optionMatch(azArg[1], "indent") ){ |
data.cMode = data.mode = MODE_Pretty; |
nArg = 1; |
} |
if( nArg!=1 ){ |
raw_printf(stderr, "Usage: .fullschema ?--indent?\n"); |
rc = 1; |
goto meta_command_exit; |
} |
open_db(p, 0); |
rc = sqlite3_exec(p->db, |
"SELECT sql FROM" |
" (SELECT sql sql, type type, tbl_name tbl_name, name name, rowid x" |
" FROM sqlite_schema UNION ALL" |
" SELECT sql, type, tbl_name, name, rowid FROM sqlite_temp_schema) " |
"WHERE type!='meta' AND sql NOTNULL AND name NOT LIKE 'sqlite_%' " |
"ORDER BY rowid", |
callback, &data, &zErrMsg |
); |
if( rc==SQLITE_OK ){ |
sqlite3_stmt *pStmt; |
rc = sqlite3_prepare_v2(p->db, |
"SELECT rowid FROM sqlite_schema" |
" WHERE name GLOB 'sqlite_stat[134]'", |
-1, &pStmt, 0); |
doStats = sqlite3_step(pStmt)==SQLITE_ROW; |
sqlite3_finalize(pStmt); |
} |
if( doStats==0 ){ |
raw_printf(p->out, "/* No STAT tables available */\n"); |
}else{ |
raw_printf(p->out, "ANALYZE sqlite_schema;\n"); |
sqlite3_exec(p->db, "SELECT 'ANALYZE sqlite_schema'", |
callback, &data, &zErrMsg); |
data.cMode = data.mode = MODE_Insert; |
data.zDestTable = "sqlite_stat1"; |
shell_exec(&data, "SELECT * FROM sqlite_stat1", &zErrMsg); |
data.zDestTable = "sqlite_stat4"; |
shell_exec(&data, "SELECT * FROM sqlite_stat4", &zErrMsg); |
raw_printf(p->out, "ANALYZE sqlite_schema;\n"); |
} |
}else |
|
if( c=='h' && strncmp(azArg[0], "headers", n)==0 ){ |
if( nArg==2 ){ |
p->showHeader = booleanValue(azArg[1]); |
p->shellFlgs |= SHFLG_HeaderSet; |
}else{ |
raw_printf(stderr, "Usage: .headers on|off\n"); |
rc = 1; |
} |
}else |
|
if( c=='h' && strncmp(azArg[0], "help", n)==0 ){ |
if( nArg>=2 ){ |
n = showHelp(p->out, azArg[1]); |
if( n==0 ){ |
utf8_printf(p->out, "Nothing matches '%s'\n", azArg[1]); |
} |
}else{ |
showHelp(p->out, 0); |
} |
}else |
|
if( c=='i' && strncmp(azArg[0], "import", n)==0 ){ |
char *zTable = 0; /* Insert data into this table */ |
char *zFile = 0; /* Name of file to extra content from */ |
sqlite3_stmt *pStmt = NULL; /* A statement */ |
int nCol; /* Number of columns in the table */ |
int nByte; /* Number of bytes in an SQL string */ |
int i, j; /* Loop counters */ |
int needCommit; /* True to COMMIT or ROLLBACK at end */ |
int nSep; /* Number of bytes in p->colSeparator[] */ |
char *zSql; /* An SQL statement */ |
ImportCtx sCtx; /* Reader context */ |
char *(SQLITE_CDECL *xRead)(ImportCtx*); /* Func to read one value */ |
int eVerbose = 0; /* Larger for more console output */ |
int nSkip = 0; /* Initial lines to skip */ |
int useOutputMode = 1; /* Use output mode to determine separators */ |
|
memset(&sCtx, 0, sizeof(sCtx)); |
if( p->mode==MODE_Ascii ){ |
xRead = ascii_read_one_field; |
}else{ |
xRead = csv_read_one_field; |
} |
for(i=1; i<nArg; i++){ |
char *z = azArg[i]; |
if( z[0]=='-' && z[1]=='-' ) z++; |
if( z[0]!='-' ){ |
if( zFile==0 ){ |
zFile = z; |
}else if( zTable==0 ){ |
zTable = z; |
}else{ |
utf8_printf(p->out, "ERROR: extra argument: \"%s\". Usage:\n", z); |
showHelp(p->out, "import"); |
rc = 1; |
goto meta_command_exit; |
} |
}else if( strcmp(z,"-v")==0 ){ |
eVerbose++; |
}else if( strcmp(z,"-skip")==0 && i<nArg-1 ){ |
nSkip = integerValue(azArg[++i]); |
}else if( strcmp(z,"-ascii")==0 ){ |
sCtx.cColSep = SEP_Unit[0]; |
sCtx.cRowSep = SEP_Record[0]; |
xRead = ascii_read_one_field; |
useOutputMode = 0; |
}else if( strcmp(z,"-csv")==0 ){ |
sCtx.cColSep = ','; |
sCtx.cRowSep = '\n'; |
xRead = csv_read_one_field; |
useOutputMode = 0; |
}else{ |
utf8_printf(p->out, "ERROR: unknown option: \"%s\". Usage:\n", z); |
showHelp(p->out, "import"); |
rc = 1; |
goto meta_command_exit; |
} |
} |
if( zTable==0 ){ |
utf8_printf(p->out, "ERROR: missing %s argument. Usage:\n", |
zFile==0 ? "FILE" : "TABLE"); |
showHelp(p->out, "import"); |
rc = 1; |
goto meta_command_exit; |
} |
seenInterrupt = 0; |
open_db(p, 0); |
if( useOutputMode ){ |
/* If neither the --csv or --ascii options are specified, then set |
** the column and row separator characters from the output mode. */ |
nSep = strlen30(p->colSeparator); |
if( nSep==0 ){ |
raw_printf(stderr, |
"Error: non-null column separator required for import\n"); |
rc = 1; |
goto meta_command_exit; |
} |
if( nSep>1 ){ |
raw_printf(stderr, |
"Error: multi-character column separators not allowed" |
" for import\n"); |
rc = 1; |
goto meta_command_exit; |
} |
nSep = strlen30(p->rowSeparator); |
if( nSep==0 ){ |
raw_printf(stderr, |
"Error: non-null row separator required for import\n"); |
rc = 1; |
goto meta_command_exit; |
} |
if( nSep==2 && p->mode==MODE_Csv && strcmp(p->rowSeparator,SEP_CrLf)==0 ){ |
/* When importing CSV (only), if the row separator is set to the |
** default output row separator, change it to the default input |
** row separator. This avoids having to maintain different input |
** and output row separators. */ |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); |
nSep = strlen30(p->rowSeparator); |
} |
if( nSep>1 ){ |
raw_printf(stderr, "Error: multi-character row separators not allowed" |
" for import\n"); |
rc = 1; |
goto meta_command_exit; |
} |
sCtx.cColSep = p->colSeparator[0]; |
sCtx.cRowSep = p->rowSeparator[0]; |
} |
sCtx.zFile = zFile; |
sCtx.nLine = 1; |
if( sCtx.zFile[0]=='|' ){ |
#ifdef SQLITE_OMIT_POPEN |
raw_printf(stderr, "Error: pipes are not supported in this OS\n"); |
rc = 1; |
goto meta_command_exit; |
#else |
sCtx.in = popen(sCtx.zFile+1, "r"); |
sCtx.zFile = "<pipe>"; |
sCtx.xCloser = pclose; |
#endif |
}else{ |
sCtx.in = fopen(sCtx.zFile, "rb"); |
sCtx.xCloser = fclose; |
} |
if( sCtx.in==0 ){ |
utf8_printf(stderr, "Error: cannot open \"%s\"\n", zFile); |
rc = 1; |
goto meta_command_exit; |
} |
if( eVerbose>=2 || (eVerbose>=1 && useOutputMode) ){ |
char zSep[2]; |
zSep[1] = 0; |
zSep[0] = sCtx.cColSep; |
utf8_printf(p->out, "Column separator "); |
output_c_string(p->out, zSep); |
utf8_printf(p->out, ", row separator "); |
zSep[0] = sCtx.cRowSep; |
output_c_string(p->out, zSep); |
utf8_printf(p->out, "\n"); |
} |
while( (nSkip--)>0 ){ |
while( xRead(&sCtx) && sCtx.cTerm==sCtx.cColSep ){} |
} |
zSql = sqlite3_mprintf("SELECT * FROM \"%w\"", zTable); |
if( zSql==0 ){ |
import_cleanup(&sCtx); |
shell_out_of_memory(); |
} |
nByte = strlen30(zSql); |
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
import_append_char(&sCtx, 0); /* To ensure sCtx.z is allocated */ |
if( rc && sqlite3_strglob("no such table: *", sqlite3_errmsg(p->db))==0 ){ |
char *zCreate = sqlite3_mprintf("CREATE TABLE \"%w\"", zTable); |
char cSep = '('; |
while( xRead(&sCtx) ){ |
zCreate = sqlite3_mprintf("%z%c\n \"%w\" TEXT", zCreate, cSep, sCtx.z); |
cSep = ','; |
if( sCtx.cTerm!=sCtx.cColSep ) break; |
} |
if( cSep=='(' ){ |
sqlite3_free(zCreate); |
import_cleanup(&sCtx); |
utf8_printf(stderr,"%s: empty file\n", sCtx.zFile); |
rc = 1; |
goto meta_command_exit; |
} |
zCreate = sqlite3_mprintf("%z\n)", zCreate); |
if( eVerbose>=1 ){ |
utf8_printf(p->out, "%s\n", zCreate); |
} |
rc = sqlite3_exec(p->db, zCreate, 0, 0, 0); |
sqlite3_free(zCreate); |
if( rc ){ |
utf8_printf(stderr, "CREATE TABLE \"%s\"(...) failed: %s\n", zTable, |
sqlite3_errmsg(p->db)); |
import_cleanup(&sCtx); |
rc = 1; |
goto meta_command_exit; |
} |
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
} |
sqlite3_free(zSql); |
if( rc ){ |
if (pStmt) sqlite3_finalize(pStmt); |
utf8_printf(stderr,"Error: %s\n", sqlite3_errmsg(p->db)); |
import_cleanup(&sCtx); |
rc = 1; |
goto meta_command_exit; |
} |
nCol = sqlite3_column_count(pStmt); |
sqlite3_finalize(pStmt); |
pStmt = 0; |
if( nCol==0 ) return 0; /* no columns, no error */ |
zSql = sqlite3_malloc64( nByte*2 + 20 + nCol*2 ); |
if( zSql==0 ){ |
import_cleanup(&sCtx); |
shell_out_of_memory(); |
} |
sqlite3_snprintf(nByte+20, zSql, "INSERT INTO \"%w\" VALUES(?", zTable); |
j = strlen30(zSql); |
for(i=1; i<nCol; i++){ |
zSql[j++] = ','; |
zSql[j++] = '?'; |
} |
zSql[j++] = ')'; |
zSql[j] = 0; |
if( eVerbose>=2 ){ |
utf8_printf(p->out, "Insert using: %s\n", zSql); |
} |
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
if( rc ){ |
utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); |
if (pStmt) sqlite3_finalize(pStmt); |
import_cleanup(&sCtx); |
rc = 1; |
goto meta_command_exit; |
} |
needCommit = sqlite3_get_autocommit(p->db); |
if( needCommit ) sqlite3_exec(p->db, "BEGIN", 0, 0, 0); |
do{ |
int startLine = sCtx.nLine; |
for(i=0; i<nCol; i++){ |
char *z = xRead(&sCtx); |
/* |
** Did we reach end-of-file before finding any columns? |
** If so, stop instead of NULL filling the remaining columns. |
*/ |
if( z==0 && i==0 ) break; |
/* |
** Did we reach end-of-file OR end-of-line before finding any |
** columns in ASCII mode? If so, stop instead of NULL filling |
** the remaining columns. |
*/ |
if( p->mode==MODE_Ascii && (z==0 || z[0]==0) && i==0 ) break; |
sqlite3_bind_text(pStmt, i+1, z, -1, SQLITE_TRANSIENT); |
if( i<nCol-1 && sCtx.cTerm!=sCtx.cColSep ){ |
utf8_printf(stderr, "%s:%d: expected %d columns but found %d - " |
"filling the rest with NULL\n", |
sCtx.zFile, startLine, nCol, i+1); |
i += 2; |
while( i<=nCol ){ sqlite3_bind_null(pStmt, i); i++; } |
} |
} |
if( sCtx.cTerm==sCtx.cColSep ){ |
do{ |
xRead(&sCtx); |
i++; |
}while( sCtx.cTerm==sCtx.cColSep ); |
utf8_printf(stderr, "%s:%d: expected %d columns but found %d - " |
"extras ignored\n", |
sCtx.zFile, startLine, nCol, i); |
} |
if( i>=nCol ){ |
sqlite3_step(pStmt); |
rc = sqlite3_reset(pStmt); |
if( rc!=SQLITE_OK ){ |
utf8_printf(stderr, "%s:%d: INSERT failed: %s\n", sCtx.zFile, |
startLine, sqlite3_errmsg(p->db)); |
sCtx.nErr++; |
}else{ |
sCtx.nRow++; |
} |
} |
}while( sCtx.cTerm!=EOF ); |
|
import_cleanup(&sCtx); |
sqlite3_finalize(pStmt); |
if( needCommit ) sqlite3_exec(p->db, "COMMIT", 0, 0, 0); |
if( eVerbose>0 ){ |
utf8_printf(p->out, |
"Added %d rows with %d errors using %d lines of input\n", |
sCtx.nRow, sCtx.nErr, sCtx.nLine-1); |
} |
}else |
|
#ifndef SQLITE_UNTESTABLE |
if( c=='i' && strncmp(azArg[0], "imposter", n)==0 ){ |
char *zSql; |
char *zCollist = 0; |
sqlite3_stmt *pStmt; |
int tnum = 0; |
int isWO = 0; /* True if making an imposter of a WITHOUT ROWID table */ |
int lenPK = 0; /* Length of the PRIMARY KEY string for isWO tables */ |
int i; |
if( !(nArg==3 || (nArg==2 && sqlite3_stricmp(azArg[1],"off")==0)) ){ |
utf8_printf(stderr, "Usage: .imposter INDEX IMPOSTER\n" |
" .imposter off\n"); |
/* Also allowed, but not documented: |
** |
** .imposter TABLE IMPOSTER |
** |
** where TABLE is a WITHOUT ROWID table. In that case, the |
** imposter is another WITHOUT ROWID table with the columns in |
** storage order. */ |
rc = 1; |
goto meta_command_exit; |
} |
open_db(p, 0); |
if( nArg==2 ){ |
sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->db, "main", 0, 1); |
goto meta_command_exit; |
} |
zSql = sqlite3_mprintf( |
"SELECT rootpage, 0 FROM sqlite_schema" |
" WHERE name='%q' AND type='index'" |
"UNION ALL " |
"SELECT rootpage, 1 FROM sqlite_schema" |
" WHERE name='%q' AND type='table'" |
" AND sql LIKE '%%without%%rowid%%'", |
azArg[1], azArg[1] |
); |
sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
if( sqlite3_step(pStmt)==SQLITE_ROW ){ |
tnum = sqlite3_column_int(pStmt, 0); |
isWO = sqlite3_column_int(pStmt, 1); |
} |
sqlite3_finalize(pStmt); |
zSql = sqlite3_mprintf("PRAGMA index_xinfo='%q'", azArg[1]); |
rc = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
i = 0; |
while( sqlite3_step(pStmt)==SQLITE_ROW ){ |
char zLabel[20]; |
const char *zCol = (const char*)sqlite3_column_text(pStmt,2); |
i++; |
if( zCol==0 ){ |
if( sqlite3_column_int(pStmt,1)==-1 ){ |
zCol = "_ROWID_"; |
}else{ |
sqlite3_snprintf(sizeof(zLabel),zLabel,"expr%d",i); |
zCol = zLabel; |
} |
} |
if( isWO && lenPK==0 && sqlite3_column_int(pStmt,5)==0 && zCollist ){ |
lenPK = (int)strlen(zCollist); |
} |
if( zCollist==0 ){ |
zCollist = sqlite3_mprintf("\"%w\"", zCol); |
}else{ |
zCollist = sqlite3_mprintf("%z,\"%w\"", zCollist, zCol); |
} |
} |
sqlite3_finalize(pStmt); |
if( i==0 || tnum==0 ){ |
utf8_printf(stderr, "no such index: \"%s\"\n", azArg[1]); |
rc = 1; |
sqlite3_free(zCollist); |
goto meta_command_exit; |
} |
if( lenPK==0 ) lenPK = 100000; |
zSql = sqlite3_mprintf( |
"CREATE TABLE \"%w\"(%s,PRIMARY KEY(%.*s))WITHOUT ROWID", |
azArg[2], zCollist, lenPK, zCollist); |
sqlite3_free(zCollist); |
rc = sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->db, "main", 1, tnum); |
if( rc==SQLITE_OK ){ |
rc = sqlite3_exec(p->db, zSql, 0, 0, 0); |
sqlite3_test_control(SQLITE_TESTCTRL_IMPOSTER, p->db, "main", 0, 0); |
if( rc ){ |
utf8_printf(stderr, "Error in [%s]: %s\n", zSql, sqlite3_errmsg(p->db)); |
}else{ |
utf8_printf(stdout, "%s;\n", zSql); |
raw_printf(stdout, |
"WARNING: writing to an imposter table will corrupt the \"%s\" %s!\n", |
azArg[1], isWO ? "table" : "index" |
); |
} |
}else{ |
raw_printf(stderr, "SQLITE_TESTCTRL_IMPOSTER returns %d\n", rc); |
rc = 1; |
} |
sqlite3_free(zSql); |
}else |
#endif /* !defined(SQLITE_OMIT_TEST_CONTROL) */ |
|
#ifdef SQLITE_ENABLE_IOTRACE |
if( c=='i' && strncmp(azArg[0], "iotrace", n)==0 ){ |
SQLITE_API extern void (SQLITE_CDECL *sqlite3IoTrace)(const char*, ...); |
if( iotrace && iotrace!=stdout ) fclose(iotrace); |
iotrace = 0; |
if( nArg<2 ){ |
sqlite3IoTrace = 0; |
}else if( strcmp(azArg[1], "-")==0 ){ |
sqlite3IoTrace = iotracePrintf; |
iotrace = stdout; |
}else{ |
iotrace = fopen(azArg[1], "w"); |
if( iotrace==0 ){ |
utf8_printf(stderr, "Error: cannot open \"%s\"\n", azArg[1]); |
sqlite3IoTrace = 0; |
rc = 1; |
}else{ |
sqlite3IoTrace = iotracePrintf; |
} |
} |
}else |
#endif |
|
if( c=='l' && n>=5 && strncmp(azArg[0], "limits", n)==0 ){ |
static const struct { |
const char *zLimitName; /* Name of a limit */ |
int limitCode; /* Integer code for that limit */ |
} aLimit[] = { |
{ "length", SQLITE_LIMIT_LENGTH }, |
{ "sql_length", SQLITE_LIMIT_SQL_LENGTH }, |
{ "column", SQLITE_LIMIT_COLUMN }, |
{ "expr_depth", SQLITE_LIMIT_EXPR_DEPTH }, |
{ "compound_select", SQLITE_LIMIT_COMPOUND_SELECT }, |
{ "vdbe_op", SQLITE_LIMIT_VDBE_OP }, |
{ "function_arg", SQLITE_LIMIT_FUNCTION_ARG }, |
{ "attached", SQLITE_LIMIT_ATTACHED }, |
{ "like_pattern_length", SQLITE_LIMIT_LIKE_PATTERN_LENGTH }, |
{ "variable_number", SQLITE_LIMIT_VARIABLE_NUMBER }, |
{ "trigger_depth", SQLITE_LIMIT_TRIGGER_DEPTH }, |
{ "worker_threads", SQLITE_LIMIT_WORKER_THREADS }, |
}; |
int i, n2; |
open_db(p, 0); |
if( nArg==1 ){ |
for(i=0; i<ArraySize(aLimit); i++){ |
printf("%20s %d\n", aLimit[i].zLimitName, |
sqlite3_limit(p->db, aLimit[i].limitCode, -1)); |
} |
}else if( nArg>3 ){ |
raw_printf(stderr, "Usage: .limit NAME ?NEW-VALUE?\n"); |
rc = 1; |
goto meta_command_exit; |
}else{ |
int iLimit = -1; |
n2 = strlen30(azArg[1]); |
for(i=0; i<ArraySize(aLimit); i++){ |
if( sqlite3_strnicmp(aLimit[i].zLimitName, azArg[1], n2)==0 ){ |
if( iLimit<0 ){ |
iLimit = i; |
}else{ |
utf8_printf(stderr, "ambiguous limit: \"%s\"\n", azArg[1]); |
rc = 1; |
goto meta_command_exit; |
} |
} |
} |
if( iLimit<0 ){ |
utf8_printf(stderr, "unknown limit: \"%s\"\n" |
"enter \".limits\" with no arguments for a list.\n", |
azArg[1]); |
rc = 1; |
goto meta_command_exit; |
} |
if( nArg==3 ){ |
sqlite3_limit(p->db, aLimit[iLimit].limitCode, |
(int)integerValue(azArg[2])); |
} |
printf("%20s %d\n", aLimit[iLimit].zLimitName, |
sqlite3_limit(p->db, aLimit[iLimit].limitCode, -1)); |
} |
}else |
|
if( c=='l' && n>2 && strncmp(azArg[0], "lint", n)==0 ){ |
open_db(p, 0); |
lintDotCommand(p, azArg, nArg); |
}else |
|
#ifndef SQLITE_OMIT_LOAD_EXTENSION |
if( c=='l' && strncmp(azArg[0], "load", n)==0 ){ |
const char *zFile, *zProc; |
char *zErrMsg = 0; |
if( nArg<2 ){ |
raw_printf(stderr, "Usage: .load FILE ?ENTRYPOINT?\n"); |
rc = 1; |
goto meta_command_exit; |
} |
zFile = azArg[1]; |
zProc = nArg>=3 ? azArg[2] : 0; |
open_db(p, 0); |
rc = sqlite3_load_extension(p->db, zFile, zProc, &zErrMsg); |
if( rc!=SQLITE_OK ){ |
utf8_printf(stderr, "Error: %s\n", zErrMsg); |
sqlite3_free(zErrMsg); |
rc = 1; |
} |
}else |
#endif |
|
if( c=='l' && strncmp(azArg[0], "log", n)==0 ){ |
if( nArg!=2 ){ |
raw_printf(stderr, "Usage: .log FILENAME\n"); |
rc = 1; |
}else{ |
const char *zFile = azArg[1]; |
output_file_close(p->pLog); |
p->pLog = output_file_open(zFile, 0); |
} |
}else |
|
if( c=='m' && strncmp(azArg[0], "mode", n)==0 ){ |
const char *zMode = nArg>=2 ? azArg[1] : ""; |
int n2 = strlen30(zMode); |
int c2 = zMode[0]; |
if( c2=='l' && n2>2 && strncmp(azArg[1],"lines",n2)==0 ){ |
p->mode = MODE_Line; |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); |
}else if( c2=='c' && strncmp(azArg[1],"columns",n2)==0 ){ |
p->mode = MODE_Column; |
if( (p->shellFlgs & SHFLG_HeaderSet)==0 ){ |
p->showHeader = 1; |
} |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); |
}else if( c2=='l' && n2>2 && strncmp(azArg[1],"list",n2)==0 ){ |
p->mode = MODE_List; |
sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Column); |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); |
}else if( c2=='h' && strncmp(azArg[1],"html",n2)==0 ){ |
p->mode = MODE_Html; |
}else if( c2=='t' && strncmp(azArg[1],"tcl",n2)==0 ){ |
p->mode = MODE_Tcl; |
sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Space); |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); |
}else if( c2=='c' && strncmp(azArg[1],"csv",n2)==0 ){ |
p->mode = MODE_Csv; |
sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Comma); |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_CrLf); |
}else if( c2=='t' && strncmp(azArg[1],"tabs",n2)==0 ){ |
p->mode = MODE_List; |
sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Tab); |
}else if( c2=='i' && strncmp(azArg[1],"insert",n2)==0 ){ |
p->mode = MODE_Insert; |
set_table_name(p, nArg>=3 ? azArg[2] : "table"); |
}else if( c2=='q' && strncmp(azArg[1],"quote",n2)==0 ){ |
p->mode = MODE_Quote; |
sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Comma); |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Row); |
}else if( c2=='a' && strncmp(azArg[1],"ascii",n2)==0 ){ |
p->mode = MODE_Ascii; |
sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Unit); |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_Record); |
}else if( c2=='m' && strncmp(azArg[1],"markdown",n2)==0 ){ |
p->mode = MODE_Markdown; |
}else if( c2=='t' && strncmp(azArg[1],"table",n2)==0 ){ |
p->mode = MODE_Table; |
}else if( c2=='b' && strncmp(azArg[1],"box",n2)==0 ){ |
p->mode = MODE_Box; |
}else if( c2=='j' && strncmp(azArg[1],"json",n2)==0 ){ |
p->mode = MODE_Json; |
}else if( nArg==1 ){ |
raw_printf(p->out, "current output mode: %s\n", modeDescr[p->mode]); |
}else{ |
raw_printf(stderr, "Error: mode should be one of: " |
"ascii box column csv html insert json line list markdown " |
"quote table tabs tcl\n"); |
rc = 1; |
} |
p->cMode = p->mode; |
}else |
|
if( c=='n' && strncmp(azArg[0], "nullvalue", n)==0 ){ |
if( nArg==2 ){ |
sqlite3_snprintf(sizeof(p->nullValue), p->nullValue, |
"%.*s", (int)ArraySize(p->nullValue)-1, azArg[1]); |
}else{ |
raw_printf(stderr, "Usage: .nullvalue STRING\n"); |
rc = 1; |
} |
}else |
|
#ifdef SQLITE_DEBUG |
if( c=='o' && strcmp(azArg[0],"oom")==0 ){ |
int i; |
for(i=1; i<nArg; i++){ |
const char *z = azArg[i]; |
if( z[0]=='-' && z[1]=='-' ) z++; |
if( strcmp(z,"-repeat")==0 ){ |
if( i==nArg-1 ){ |
raw_printf(p->out, "missing argument on \"%s\"\n", azArg[i]); |
rc = 1; |
}else{ |
oomRepeat = (int)integerValue(azArg[++i]); |
} |
}else if( IsDigit(z[0]) ){ |
oomCounter = (int)integerValue(azArg[i]); |
}else{ |
raw_printf(p->out, "unknown argument: \"%s\"\n", azArg[i]); |
raw_printf(p->out, "Usage: .oom [--repeat N] [M]\n"); |
rc = 1; |
} |
} |
if( rc==0 ){ |
raw_printf(p->out, "oomCounter = %d\n", oomCounter); |
raw_printf(p->out, "oomRepeat = %d\n", oomRepeat); |
} |
}else |
#endif /* SQLITE_DEBUG */ |
|
if( c=='o' && strncmp(azArg[0], "open", n)==0 && n>=2 ){ |
char *zNewFilename = 0; /* Name of the database file to open */ |
int iName = 1; /* Index in azArg[] of the filename */ |
int newFlag = 0; /* True to delete file before opening */ |
/* Close the existing database */ |
session_close_all(p); |
close_db(p->db); |
p->db = 0; |
p->zDbFilename = 0; |
sqlite3_free(p->zFreeOnClose); |
p->zFreeOnClose = 0; |
p->openMode = SHELL_OPEN_UNSPEC; |
p->openFlags = 0; |
p->szMax = 0; |
/* Check for command-line arguments */ |
for(iName=1; iName<nArg; iName++){ |
const char *z = azArg[iName]; |
if( optionMatch(z,"new") ){ |
newFlag = 1; |
#ifdef SQLITE_HAVE_ZLIB |
}else if( optionMatch(z, "zip") ){ |
p->openMode = SHELL_OPEN_ZIPFILE; |
#endif |
}else if( optionMatch(z, "append") ){ |
p->openMode = SHELL_OPEN_APPENDVFS; |
}else if( optionMatch(z, "readonly") ){ |
p->openMode = SHELL_OPEN_READONLY; |
}else if( optionMatch(z, "nofollow") ){ |
p->openFlags |= SQLITE_OPEN_NOFOLLOW; |
#ifdef SQLITE_ENABLE_DESERIALIZE |
}else if( optionMatch(z, "deserialize") ){ |
p->openMode = SHELL_OPEN_DESERIALIZE; |
}else if( optionMatch(z, "hexdb") ){ |
p->openMode = SHELL_OPEN_HEXDB; |
}else if( optionMatch(z, "maxsize") && iName+1<nArg ){ |
p->szMax = integerValue(azArg[++iName]); |
#endif /* SQLITE_ENABLE_DESERIALIZE */ |
}else if( z[0]=='-' ){ |
utf8_printf(stderr, "unknown option: %s\n", z); |
rc = 1; |
goto meta_command_exit; |
}else if( zNewFilename ){ |
utf8_printf(stderr, "extra argument: \"%s\"\n", z); |
rc = 1; |
goto meta_command_exit; |
}else{ |
zNewFilename = sqlite3_mprintf("%s", z); |
} |
} |
/* If a filename is specified, try to open it first */ |
if( zNewFilename || p->openMode==SHELL_OPEN_HEXDB ){ |
if( newFlag ) shellDeleteFile(zNewFilename); |
p->zDbFilename = zNewFilename; |
open_db(p, OPEN_DB_KEEPALIVE); |
if( p->db==0 ){ |
utf8_printf(stderr, "Error: cannot open '%s'\n", zNewFilename); |
sqlite3_free(zNewFilename); |
}else{ |
p->zFreeOnClose = zNewFilename; |
} |
} |
if( p->db==0 ){ |
/* As a fall-back open a TEMP database */ |
p->zDbFilename = 0; |
open_db(p, 0); |
} |
}else |
|
if( (c=='o' |
&& (strncmp(azArg[0], "output", n)==0||strncmp(azArg[0], "once", n)==0)) |
|| (c=='e' && n==5 && strcmp(azArg[0],"excel")==0) |
){ |
char *zFile = 0; |
int bTxtMode = 0; |
int i; |
int eMode = 0; |
int bBOM = 0; |
int bOnce = 0; /* 0: .output, 1: .once, 2: .excel */ |
|
if( c=='e' ){ |
eMode = 'x'; |
bOnce = 2; |
}else if( strncmp(azArg[0],"once",n)==0 ){ |
bOnce = 1; |
} |
for(i=1; i<nArg; i++){ |
char *z = azArg[i]; |
if( z[0]=='-' ){ |
if( z[1]=='-' ) z++; |
if( strcmp(z,"-bom")==0 ){ |
bBOM = 1; |
}else if( c!='e' && strcmp(z,"-x")==0 ){ |
eMode = 'x'; /* spreadsheet */ |
}else if( c!='e' && strcmp(z,"-e")==0 ){ |
eMode = 'e'; /* text editor */ |
}else{ |
utf8_printf(p->out, "ERROR: unknown option: \"%s\". Usage:\n", |
azArg[i]); |
showHelp(p->out, azArg[0]); |
rc = 1; |
goto meta_command_exit; |
} |
}else if( zFile==0 && eMode!='e' && eMode!='x' ){ |
zFile = sqlite3_mprintf("%s", z); |
if( zFile[0]=='|' ){ |
while( i+1<nArg ) zFile = sqlite3_mprintf("%z %s", zFile, azArg[++i]); |
break; |
} |
}else{ |
utf8_printf(p->out,"ERROR: extra parameter: \"%s\". Usage:\n", |
azArg[i]); |
showHelp(p->out, azArg[0]); |
rc = 1; |
sqlite3_free(zFile); |
goto meta_command_exit; |
} |
} |
if( zFile==0 ) zFile = sqlite3_mprintf("stdout"); |
if( bOnce ){ |
p->outCount = 2; |
}else{ |
p->outCount = 0; |
} |
output_reset(p); |
#ifndef SQLITE_NOHAVE_SYSTEM |
if( eMode=='e' || eMode=='x' ){ |
p->doXdgOpen = 1; |
outputModePush(p); |
if( eMode=='x' ){ |
/* spreadsheet mode. Output as CSV. */ |
newTempFile(p, "csv"); |
ShellClearFlag(p, SHFLG_Echo); |
p->mode = MODE_Csv; |
sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, SEP_Comma); |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, SEP_CrLf); |
}else{ |
/* text editor mode */ |
newTempFile(p, "txt"); |
bTxtMode = 1; |
} |
sqlite3_free(zFile); |
zFile = sqlite3_mprintf("%s", p->zTempFile); |
} |
#endif /* SQLITE_NOHAVE_SYSTEM */ |
if( zFile[0]=='|' ){ |
#ifdef SQLITE_OMIT_POPEN |
raw_printf(stderr, "Error: pipes are not supported in this OS\n"); |
rc = 1; |
p->out = stdout; |
#else |
p->out = popen(zFile + 1, "w"); |
if( p->out==0 ){ |
utf8_printf(stderr,"Error: cannot open pipe \"%s\"\n", zFile + 1); |
p->out = stdout; |
rc = 1; |
}else{ |
if( bBOM ) fprintf(p->out,"\357\273\277"); |
sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", zFile); |
} |
#endif |
}else{ |
p->out = output_file_open(zFile, bTxtMode); |
if( p->out==0 ){ |
if( strcmp(zFile,"off")!=0 ){ |
utf8_printf(stderr,"Error: cannot write to \"%s\"\n", zFile); |
} |
p->out = stdout; |
rc = 1; |
} else { |
if( bBOM ) fprintf(p->out,"\357\273\277"); |
sqlite3_snprintf(sizeof(p->outfile), p->outfile, "%s", zFile); |
} |
} |
sqlite3_free(zFile); |
}else |
|
if( c=='p' && n>=3 && strncmp(azArg[0], "parameter", n)==0 ){ |
open_db(p,0); |
if( nArg<=1 ) goto parameter_syntax_error; |
|
/* .parameter clear |
** Clear all bind parameters by dropping the TEMP table that holds them. |
*/ |
if( nArg==2 && strcmp(azArg[1],"clear")==0 ){ |
sqlite3_exec(p->db, "DROP TABLE IF EXISTS temp.sqlite_parameters;", |
0, 0, 0); |
}else |
|
/* .parameter list |
** List all bind parameters. |
*/ |
if( nArg==2 && strcmp(azArg[1],"list")==0 ){ |
sqlite3_stmt *pStmt = 0; |
int rx; |
int len = 0; |
rx = sqlite3_prepare_v2(p->db, |
"SELECT max(length(key)) " |
"FROM temp.sqlite_parameters;", -1, &pStmt, 0); |
if( rx==SQLITE_OK && sqlite3_step(pStmt)==SQLITE_ROW ){ |
len = sqlite3_column_int(pStmt, 0); |
if( len>40 ) len = 40; |
} |
sqlite3_finalize(pStmt); |
pStmt = 0; |
if( len ){ |
rx = sqlite3_prepare_v2(p->db, |
"SELECT key, quote(value) " |
"FROM temp.sqlite_parameters;", -1, &pStmt, 0); |
while( sqlite3_step(pStmt)==SQLITE_ROW ){ |
utf8_printf(p->out, "%-*s %s\n", len, sqlite3_column_text(pStmt,0), |
sqlite3_column_text(pStmt,1)); |
} |
sqlite3_finalize(pStmt); |
} |
}else |
|
/* .parameter init |
** Make sure the TEMP table used to hold bind parameters exists. |
** Create it if necessary. |
*/ |
if( nArg==2 && strcmp(azArg[1],"init")==0 ){ |
bind_table_init(p); |
}else |
|
/* .parameter set NAME VALUE |
** Set or reset a bind parameter. NAME should be the full parameter |
** name exactly as it appears in the query. (ex: $abc, @def). The |
** VALUE can be in either SQL literal notation, or if not it will be |
** understood to be a text string. |
*/ |
if( nArg==4 && strcmp(azArg[1],"set")==0 ){ |
int rx; |
char *zSql; |
sqlite3_stmt *pStmt; |
const char *zKey = azArg[2]; |
const char *zValue = azArg[3]; |
bind_table_init(p); |
zSql = sqlite3_mprintf( |
"REPLACE INTO temp.sqlite_parameters(key,value)" |
"VALUES(%Q,%s);", zKey, zValue); |
if( zSql==0 ) shell_out_of_memory(); |
pStmt = 0; |
rx = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
if( rx!=SQLITE_OK ){ |
sqlite3_finalize(pStmt); |
pStmt = 0; |
zSql = sqlite3_mprintf( |
"REPLACE INTO temp.sqlite_parameters(key,value)" |
"VALUES(%Q,%Q);", zKey, zValue); |
if( zSql==0 ) shell_out_of_memory(); |
rx = sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
sqlite3_free(zSql); |
if( rx!=SQLITE_OK ){ |
utf8_printf(p->out, "Error: %s\n", sqlite3_errmsg(p->db)); |
sqlite3_finalize(pStmt); |
pStmt = 0; |
rc = 1; |
} |
} |
sqlite3_step(pStmt); |
sqlite3_finalize(pStmt); |
}else |
|
/* .parameter unset NAME |
** Remove the NAME binding from the parameter binding table, if it |
** exists. |
*/ |
if( nArg==3 && strcmp(azArg[1],"unset")==0 ){ |
char *zSql = sqlite3_mprintf( |
"DELETE FROM temp.sqlite_parameters WHERE key=%Q", azArg[2]); |
if( zSql==0 ) shell_out_of_memory(); |
sqlite3_exec(p->db, zSql, 0, 0, 0); |
sqlite3_free(zSql); |
}else |
/* If no command name matches, show a syntax error */ |
parameter_syntax_error: |
showHelp(p->out, "parameter"); |
}else |
|
if( c=='p' && n>=3 && strncmp(azArg[0], "print", n)==0 ){ |
int i; |
for(i=1; i<nArg; i++){ |
if( i>1 ) raw_printf(p->out, " "); |
utf8_printf(p->out, "%s", azArg[i]); |
} |
raw_printf(p->out, "\n"); |
}else |
|
#ifndef SQLITE_OMIT_PROGRESS_CALLBACK |
if( c=='p' && n>=3 && strncmp(azArg[0], "progress", n)==0 ){ |
int i; |
int nn = 0; |
p->flgProgress = 0; |
p->mxProgress = 0; |
p->nProgress = 0; |
for(i=1; i<nArg; i++){ |
const char *z = azArg[i]; |
if( z[0]=='-' ){ |
z++; |
if( z[0]=='-' ) z++; |
if( strcmp(z,"quiet")==0 || strcmp(z,"q")==0 ){ |
p->flgProgress |= SHELL_PROGRESS_QUIET; |
continue; |
} |
if( strcmp(z,"reset")==0 ){ |
p->flgProgress |= SHELL_PROGRESS_RESET; |
continue; |
} |
if( strcmp(z,"once")==0 ){ |
p->flgProgress |= SHELL_PROGRESS_ONCE; |
continue; |
} |
if( strcmp(z,"limit")==0 ){ |
if( i+1>=nArg ){ |
utf8_printf(stderr, "Error: missing argument on --limit\n"); |
rc = 1; |
goto meta_command_exit; |
}else{ |
p->mxProgress = (int)integerValue(azArg[++i]); |
} |
continue; |
} |
utf8_printf(stderr, "Error: unknown option: \"%s\"\n", azArg[i]); |
rc = 1; |
goto meta_command_exit; |
}else{ |
nn = (int)integerValue(z); |
} |
} |
open_db(p, 0); |
sqlite3_progress_handler(p->db, nn, progress_handler, p); |
}else |
#endif /* SQLITE_OMIT_PROGRESS_CALLBACK */ |
|
if( c=='p' && strncmp(azArg[0], "prompt", n)==0 ){ |
if( nArg >= 2) { |
strncpy(mainPrompt,azArg[1],(int)ArraySize(mainPrompt)-1); |
} |
if( nArg >= 3) { |
strncpy(continuePrompt,azArg[2],(int)ArraySize(continuePrompt)-1); |
} |
}else |
|
if( c=='q' && strncmp(azArg[0], "quit", n)==0 ){ |
rc = 2; |
}else |
|
if( c=='r' && n>=3 && strncmp(azArg[0], "read", n)==0 ){ |
FILE *inSaved = p->in; |
int savedLineno = p->lineno; |
if( nArg!=2 ){ |
raw_printf(stderr, "Usage: .read FILE\n"); |
rc = 1; |
goto meta_command_exit; |
} |
if( azArg[1][0]=='|' ){ |
#ifdef SQLITE_OMIT_POPEN |
raw_printf(stderr, "Error: pipes are not supported in this OS\n"); |
rc = 1; |
p->out = stdout; |
#else |
p->in = popen(azArg[1]+1, "r"); |
if( p->in==0 ){ |
utf8_printf(stderr, "Error: cannot open \"%s\"\n", azArg[1]); |
rc = 1; |
}else{ |
rc = process_input(p); |
pclose(p->in); |
} |
#endif |
}else if( notNormalFile(azArg[1]) || (p->in = fopen(azArg[1], "rb"))==0 ){ |
utf8_printf(stderr,"Error: cannot open \"%s\"\n", azArg[1]); |
rc = 1; |
}else{ |
rc = process_input(p); |
fclose(p->in); |
} |
p->in = inSaved; |
p->lineno = savedLineno; |
}else |
|
if( c=='r' && n>=3 && strncmp(azArg[0], "restore", n)==0 ){ |
const char *zSrcFile; |
const char *zDb; |
sqlite3 *pSrc; |
sqlite3_backup *pBackup; |
int nTimeout = 0; |
|
if( nArg==2 ){ |
zSrcFile = azArg[1]; |
zDb = "main"; |
}else if( nArg==3 ){ |
zSrcFile = azArg[2]; |
zDb = azArg[1]; |
}else{ |
raw_printf(stderr, "Usage: .restore ?DB? FILE\n"); |
rc = 1; |
goto meta_command_exit; |
} |
rc = sqlite3_open(zSrcFile, &pSrc); |
if( rc!=SQLITE_OK ){ |
utf8_printf(stderr, "Error: cannot open \"%s\"\n", zSrcFile); |
close_db(pSrc); |
return 1; |
} |
open_db(p, 0); |
pBackup = sqlite3_backup_init(p->db, zDb, pSrc, "main"); |
if( pBackup==0 ){ |
utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); |
close_db(pSrc); |
return 1; |
} |
while( (rc = sqlite3_backup_step(pBackup,100))==SQLITE_OK |
|| rc==SQLITE_BUSY ){ |
if( rc==SQLITE_BUSY ){ |
if( nTimeout++ >= 3 ) break; |
sqlite3_sleep(100); |
} |
} |
sqlite3_backup_finish(pBackup); |
if( rc==SQLITE_DONE ){ |
rc = 0; |
}else if( rc==SQLITE_BUSY || rc==SQLITE_LOCKED ){ |
raw_printf(stderr, "Error: source database is busy\n"); |
rc = 1; |
}else{ |
utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); |
rc = 1; |
} |
close_db(pSrc); |
}else |
|
if( c=='s' && strncmp(azArg[0], "scanstats", n)==0 ){ |
if( nArg==2 ){ |
p->scanstatsOn = (u8)booleanValue(azArg[1]); |
#ifndef SQLITE_ENABLE_STMT_SCANSTATUS |
raw_printf(stderr, "Warning: .scanstats not available in this build.\n"); |
#endif |
}else{ |
raw_printf(stderr, "Usage: .scanstats on|off\n"); |
rc = 1; |
} |
}else |
|
if( c=='s' && strncmp(azArg[0], "schema", n)==0 ){ |
ShellText sSelect; |
ShellState data; |
char *zErrMsg = 0; |
const char *zDiv = "("; |
const char *zName = 0; |
int iSchema = 0; |
int bDebug = 0; |
int bNoSystemTabs = 0; |
int ii; |
|
open_db(p, 0); |
memcpy(&data, p, sizeof(data)); |
data.showHeader = 0; |
data.cMode = data.mode = MODE_Semi; |
initText(&sSelect); |
for(ii=1; ii<nArg; ii++){ |
if( optionMatch(azArg[ii],"indent") ){ |
data.cMode = data.mode = MODE_Pretty; |
}else if( optionMatch(azArg[ii],"debug") ){ |
bDebug = 1; |
}else if( optionMatch(azArg[ii],"nosys") ){ |
bNoSystemTabs = 1; |
}else if( azArg[ii][0]=='-' ){ |
utf8_printf(stderr, "Unknown option: \"%s\"\n", azArg[ii]); |
rc = 1; |
goto meta_command_exit; |
}else if( zName==0 ){ |
zName = azArg[ii]; |
}else{ |
raw_printf(stderr, "Usage: .schema ?--indent? ?--nosys? ?LIKE-PATTERN?\n"); |
rc = 1; |
goto meta_command_exit; |
} |
} |
if( zName!=0 ){ |
int isSchema = sqlite3_strlike(zName, "sqlite_master", '\\')==0 |
|| sqlite3_strlike(zName, "sqlite_schema", '\\')==0 |
|| sqlite3_strlike(zName,"sqlite_temp_master", '\\')==0 |
|| sqlite3_strlike(zName,"sqlite_temp_schema", '\\')==0; |
if( isSchema ){ |
char *new_argv[2], *new_colv[2]; |
new_argv[0] = sqlite3_mprintf( |
"CREATE TABLE %s (\n" |
" type text,\n" |
" name text,\n" |
" tbl_name text,\n" |
" rootpage integer,\n" |
" sql text\n" |
")", zName); |
new_argv[1] = 0; |
new_colv[0] = "sql"; |
new_colv[1] = 0; |
callback(&data, 1, new_argv, new_colv); |
sqlite3_free(new_argv[0]); |
} |
} |
if( zDiv ){ |
sqlite3_stmt *pStmt = 0; |
rc = sqlite3_prepare_v2(p->db, "SELECT name FROM pragma_database_list", |
-1, &pStmt, 0); |
if( rc ){ |
utf8_printf(stderr, "Error: %s\n", sqlite3_errmsg(p->db)); |
sqlite3_finalize(pStmt); |
rc = 1; |
goto meta_command_exit; |
} |
appendText(&sSelect, "SELECT sql FROM", 0); |
iSchema = 0; |
while( sqlite3_step(pStmt)==SQLITE_ROW ){ |
const char *zDb = (const char*)sqlite3_column_text(pStmt, 0); |
char zScNum[30]; |
sqlite3_snprintf(sizeof(zScNum), zScNum, "%d", ++iSchema); |
appendText(&sSelect, zDiv, 0); |
zDiv = " UNION ALL "; |
appendText(&sSelect, "SELECT shell_add_schema(sql,", 0); |
if( sqlite3_stricmp(zDb, "main")!=0 ){ |
appendText(&sSelect, zDb, '\''); |
}else{ |
appendText(&sSelect, "NULL", 0); |
} |
appendText(&sSelect, ",name) AS sql, type, tbl_name, name, rowid,", 0); |
appendText(&sSelect, zScNum, 0); |
appendText(&sSelect, " AS snum, ", 0); |
appendText(&sSelect, zDb, '\''); |
appendText(&sSelect, " AS sname FROM ", 0); |
appendText(&sSelect, zDb, quoteChar(zDb)); |
appendText(&sSelect, ".sqlite_schema", 0); |
} |
sqlite3_finalize(pStmt); |
#ifndef SQLITE_OMIT_INTROSPECTION_PRAGMAS |
if( zName ){ |
appendText(&sSelect, |
" UNION ALL SELECT shell_module_schema(name)," |
" 'table', name, name, name, 9e+99, 'main' FROM pragma_module_list", |
0); |
} |
#endif |
appendText(&sSelect, ") WHERE ", 0); |
if( zName ){ |
char *zQarg = sqlite3_mprintf("%Q", zName); |
int bGlob = strchr(zName, '*') != 0 || strchr(zName, '?') != 0 || |
strchr(zName, '[') != 0; |
if( strchr(zName, '.') ){ |
appendText(&sSelect, "lower(printf('%s.%s',sname,tbl_name))", 0); |
}else{ |
appendText(&sSelect, "lower(tbl_name)", 0); |
} |
appendText(&sSelect, bGlob ? " GLOB " : " LIKE ", 0); |
appendText(&sSelect, zQarg, 0); |
if( !bGlob ){ |
appendText(&sSelect, " ESCAPE '\\' ", 0); |
} |
appendText(&sSelect, " AND ", 0); |
sqlite3_free(zQarg); |
} |
if( bNoSystemTabs ){ |
appendText(&sSelect, "name NOT LIKE 'sqlite_%%' AND ", 0); |
} |
appendText(&sSelect, "sql IS NOT NULL" |
" ORDER BY snum, rowid", 0); |
if( bDebug ){ |
utf8_printf(p->out, "SQL: %s;\n", sSelect.z); |
}else{ |
rc = sqlite3_exec(p->db, sSelect.z, callback, &data, &zErrMsg); |
} |
freeText(&sSelect); |
} |
if( zErrMsg ){ |
utf8_printf(stderr,"Error: %s\n", zErrMsg); |
sqlite3_free(zErrMsg); |
rc = 1; |
}else if( rc != SQLITE_OK ){ |
raw_printf(stderr,"Error: querying schema information\n"); |
rc = 1; |
}else{ |
rc = 0; |
} |
}else |
|
if( c=='s' && n==11 && strncmp(azArg[0], "selecttrace", n)==0 ){ |
unsigned int x = nArg>=2 ? (unsigned int)integerValue(azArg[1]) : 0xffffffff; |
sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, 1, &x); |
}else |
|
#if defined(SQLITE_ENABLE_SESSION) |
if( c=='s' && strncmp(azArg[0],"session",n)==0 && n>=3 ){ |
OpenSession *pSession = &p->aSession[0]; |
char **azCmd = &azArg[1]; |
int iSes = 0; |
int nCmd = nArg - 1; |
int i; |
if( nArg<=1 ) goto session_syntax_error; |
open_db(p, 0); |
if( nArg>=3 ){ |
for(iSes=0; iSes<p->nSession; iSes++){ |
if( strcmp(p->aSession[iSes].zName, azArg[1])==0 ) break; |
} |
if( iSes<p->nSession ){ |
pSession = &p->aSession[iSes]; |
azCmd++; |
nCmd--; |
}else{ |
pSession = &p->aSession[0]; |
iSes = 0; |
} |
} |
|
/* .session attach TABLE |
** Invoke the sqlite3session_attach() interface to attach a particular |
** table so that it is never filtered. |
*/ |
if( strcmp(azCmd[0],"attach")==0 ){ |
if( nCmd!=2 ) goto session_syntax_error; |
if( pSession->p==0 ){ |
session_not_open: |
raw_printf(stderr, "ERROR: No sessions are open\n"); |
}else{ |
rc = sqlite3session_attach(pSession->p, azCmd[1]); |
if( rc ){ |
raw_printf(stderr, "ERROR: sqlite3session_attach() returns %d\n", rc); |
rc = 0; |
} |
} |
}else |
|
/* .session changeset FILE |
** .session patchset FILE |
** Write a changeset or patchset into a file. The file is overwritten. |
*/ |
if( strcmp(azCmd[0],"changeset")==0 || strcmp(azCmd[0],"patchset")==0 ){ |
FILE *out = 0; |
if( nCmd!=2 ) goto session_syntax_error; |
if( pSession->p==0 ) goto session_not_open; |
out = fopen(azCmd[1], "wb"); |
if( out==0 ){ |
utf8_printf(stderr, "ERROR: cannot open \"%s\" for writing\n", |
azCmd[1]); |
}else{ |
int szChng; |
void *pChng; |
if( azCmd[0][0]=='c' ){ |
rc = sqlite3session_changeset(pSession->p, &szChng, &pChng); |
}else{ |
rc = sqlite3session_patchset(pSession->p, &szChng, &pChng); |
} |
if( rc ){ |
printf("Error: error code %d\n", rc); |
rc = 0; |
} |
if( pChng |
&& fwrite(pChng, szChng, 1, out)!=1 ){ |
raw_printf(stderr, "ERROR: Failed to write entire %d-byte output\n", |
szChng); |
} |
sqlite3_free(pChng); |
fclose(out); |
} |
}else |
|
/* .session close |
** Close the identified session |
*/ |
if( strcmp(azCmd[0], "close")==0 ){ |
if( nCmd!=1 ) goto session_syntax_error; |
if( p->nSession ){ |
session_close(pSession); |
p->aSession[iSes] = p->aSession[--p->nSession]; |
} |
}else |
|
/* .session enable ?BOOLEAN? |
** Query or set the enable flag |
*/ |
if( strcmp(azCmd[0], "enable")==0 ){ |
int ii; |
if( nCmd>2 ) goto session_syntax_error; |
ii = nCmd==1 ? -1 : booleanValue(azCmd[1]); |
if( p->nSession ){ |
ii = sqlite3session_enable(pSession->p, ii); |
utf8_printf(p->out, "session %s enable flag = %d\n", |
pSession->zName, ii); |
} |
}else |
|
/* .session filter GLOB .... |
** Set a list of GLOB patterns of table names to be excluded. |
*/ |
if( strcmp(azCmd[0], "filter")==0 ){ |
int ii, nByte; |
if( nCmd<2 ) goto session_syntax_error; |
if( p->nSession ){ |
for(ii=0; ii<pSession->nFilter; ii++){ |
sqlite3_free(pSession->azFilter[ii]); |
} |
sqlite3_free(pSession->azFilter); |
nByte = sizeof(pSession->azFilter[0])*(nCmd-1); |
pSession->azFilter = sqlite3_malloc( nByte ); |
if( pSession->azFilter==0 ){ |
raw_printf(stderr, "Error: out or memory\n"); |
exit(1); |
} |
for(ii=1; ii<nCmd; ii++){ |
pSession->azFilter[ii-1] = sqlite3_mprintf("%s", azCmd[ii]); |
} |
pSession->nFilter = ii-1; |
} |
}else |
|
/* .session indirect ?BOOLEAN? |
** Query or set the indirect flag |
*/ |
if( strcmp(azCmd[0], "indirect")==0 ){ |
int ii; |
if( nCmd>2 ) goto session_syntax_error; |
ii = nCmd==1 ? -1 : booleanValue(azCmd[1]); |
if( p->nSession ){ |
ii = sqlite3session_indirect(pSession->p, ii); |
utf8_printf(p->out, "session %s indirect flag = %d\n", |
pSession->zName, ii); |
} |
}else |
|
/* .session isempty |
** Determine if the session is empty |
*/ |
if( strcmp(azCmd[0], "isempty")==0 ){ |
int ii; |
if( nCmd!=1 ) goto session_syntax_error; |
if( p->nSession ){ |
ii = sqlite3session_isempty(pSession->p); |
utf8_printf(p->out, "session %s isempty flag = %d\n", |
pSession->zName, ii); |
} |
}else |
|
/* .session list |
** List all currently open sessions |
*/ |
if( strcmp(azCmd[0],"list")==0 ){ |
for(i=0; i<p->nSession; i++){ |
utf8_printf(p->out, "%d %s\n", i, p->aSession[i].zName); |
} |
}else |
|
/* .session open DB NAME |
** Open a new session called NAME on the attached database DB. |
** DB is normally "main". |
*/ |
if( strcmp(azCmd[0],"open")==0 ){ |
char *zName; |
if( nCmd!=3 ) goto session_syntax_error; |
zName = azCmd[2]; |
if( zName[0]==0 ) goto session_syntax_error; |
for(i=0; i<p->nSession; i++){ |
if( strcmp(p->aSession[i].zName,zName)==0 ){ |
utf8_printf(stderr, "Session \"%s\" already exists\n", zName); |
goto meta_command_exit; |
} |
} |
if( p->nSession>=ArraySize(p->aSession) ){ |
raw_printf(stderr, "Maximum of %d sessions\n", ArraySize(p->aSession)); |
goto meta_command_exit; |
} |
pSession = &p->aSession[p->nSession]; |
rc = sqlite3session_create(p->db, azCmd[1], &pSession->p); |
if( rc ){ |
raw_printf(stderr, "Cannot open session: error code=%d\n", rc); |
rc = 0; |
goto meta_command_exit; |
} |
pSession->nFilter = 0; |
sqlite3session_table_filter(pSession->p, session_filter, pSession); |
p->nSession++; |
pSession->zName = sqlite3_mprintf("%s", zName); |
}else |
/* If no command name matches, show a syntax error */ |
session_syntax_error: |
showHelp(p->out, "session"); |
}else |
#endif |
|
#ifdef SQLITE_DEBUG |
/* Undocumented commands for internal testing. Subject to change |
** without notice. */ |
if( c=='s' && n>=10 && strncmp(azArg[0], "selftest-", 9)==0 ){ |
if( strncmp(azArg[0]+9, "boolean", n-9)==0 ){ |
int i, v; |
for(i=1; i<nArg; i++){ |
v = booleanValue(azArg[i]); |
utf8_printf(p->out, "%s: %d 0x%x\n", azArg[i], v, v); |
} |
} |
if( strncmp(azArg[0]+9, "integer", n-9)==0 ){ |
int i; sqlite3_int64 v; |
for(i=1; i<nArg; i++){ |
char zBuf[200]; |
v = integerValue(azArg[i]); |
sqlite3_snprintf(sizeof(zBuf),zBuf,"%s: %lld 0x%llx\n", azArg[i],v,v); |
utf8_printf(p->out, "%s", zBuf); |
} |
} |
}else |
#endif |
|
if( c=='s' && n>=4 && strncmp(azArg[0],"selftest",n)==0 ){ |
int bIsInit = 0; /* True to initialize the SELFTEST table */ |
int bVerbose = 0; /* Verbose output */ |
int bSelftestExists; /* True if SELFTEST already exists */ |
int i, k; /* Loop counters */ |
int nTest = 0; /* Number of tests runs */ |
int nErr = 0; /* Number of errors seen */ |
ShellText str; /* Answer for a query */ |
sqlite3_stmt *pStmt = 0; /* Query against the SELFTEST table */ |
|
open_db(p,0); |
for(i=1; i<nArg; i++){ |
const char *z = azArg[i]; |
if( z[0]=='-' && z[1]=='-' ) z++; |
if( strcmp(z,"-init")==0 ){ |
bIsInit = 1; |
}else |
if( strcmp(z,"-v")==0 ){ |
bVerbose++; |
}else |
{ |
utf8_printf(stderr, "Unknown option \"%s\" on \"%s\"\n", |
azArg[i], azArg[0]); |
raw_printf(stderr, "Should be one of: --init -v\n"); |
rc = 1; |
goto meta_command_exit; |
} |
} |
if( sqlite3_table_column_metadata(p->db,"main","selftest",0,0,0,0,0,0) |
!= SQLITE_OK ){ |
bSelftestExists = 0; |
}else{ |
bSelftestExists = 1; |
} |
if( bIsInit ){ |
createSelftestTable(p); |
bSelftestExists = 1; |
} |
initText(&str); |
appendText(&str, "x", 0); |
for(k=bSelftestExists; k>=0; k--){ |
if( k==1 ){ |
rc = sqlite3_prepare_v2(p->db, |
"SELECT tno,op,cmd,ans FROM selftest ORDER BY tno", |
-1, &pStmt, 0); |
}else{ |
rc = sqlite3_prepare_v2(p->db, |
"VALUES(0,'memo','Missing SELFTEST table - default checks only','')," |
" (1,'run','PRAGMA integrity_check','ok')", |
-1, &pStmt, 0); |
} |
if( rc ){ |
raw_printf(stderr, "Error querying the selftest table\n"); |
rc = 1; |
sqlite3_finalize(pStmt); |
goto meta_command_exit; |
} |
for(i=1; sqlite3_step(pStmt)==SQLITE_ROW; i++){ |
int tno = sqlite3_column_int(pStmt, 0); |
const char *zOp = (const char*)sqlite3_column_text(pStmt, 1); |
const char *zSql = (const char*)sqlite3_column_text(pStmt, 2); |
const char *zAns = (const char*)sqlite3_column_text(pStmt, 3); |
|
k = 0; |
if( bVerbose>0 ){ |
char *zQuote = sqlite3_mprintf("%q", zSql); |
printf("%d: %s %s\n", tno, zOp, zSql); |
sqlite3_free(zQuote); |
} |
if( strcmp(zOp,"memo")==0 ){ |
utf8_printf(p->out, "%s\n", zSql); |
}else |
if( strcmp(zOp,"run")==0 ){ |
char *zErrMsg = 0; |
str.n = 0; |
str.z[0] = 0; |
rc = sqlite3_exec(p->db, zSql, captureOutputCallback, &str, &zErrMsg); |
nTest++; |
if( bVerbose ){ |
utf8_printf(p->out, "Result: %s\n", str.z); |
} |
if( rc || zErrMsg ){ |
nErr++; |
rc = 1; |
utf8_printf(p->out, "%d: error-code-%d: %s\n", tno, rc, zErrMsg); |
sqlite3_free(zErrMsg); |
}else if( strcmp(zAns,str.z)!=0 ){ |
nErr++; |
rc = 1; |
utf8_printf(p->out, "%d: Expected: [%s]\n", tno, zAns); |
utf8_printf(p->out, "%d: Got: [%s]\n", tno, str.z); |
} |
}else |
{ |
utf8_printf(stderr, |
"Unknown operation \"%s\" on selftest line %d\n", zOp, tno); |
rc = 1; |
break; |
} |
} /* End loop over rows of content from SELFTEST */ |
sqlite3_finalize(pStmt); |
} /* End loop over k */ |
freeText(&str); |
utf8_printf(p->out, "%d errors out of %d tests\n", nErr, nTest); |
}else |
|
if( c=='s' && strncmp(azArg[0], "separator", n)==0 ){ |
if( nArg<2 || nArg>3 ){ |
raw_printf(stderr, "Usage: .separator COL ?ROW?\n"); |
rc = 1; |
} |
if( nArg>=2 ){ |
sqlite3_snprintf(sizeof(p->colSeparator), p->colSeparator, |
"%.*s", (int)ArraySize(p->colSeparator)-1, azArg[1]); |
} |
if( nArg>=3 ){ |
sqlite3_snprintf(sizeof(p->rowSeparator), p->rowSeparator, |
"%.*s", (int)ArraySize(p->rowSeparator)-1, azArg[2]); |
} |
}else |
|
if( c=='s' && n>=4 && strncmp(azArg[0],"sha3sum",n)==0 ){ |
const char *zLike = 0; /* Which table to checksum. 0 means everything */ |
int i; /* Loop counter */ |
int bSchema = 0; /* Also hash the schema */ |
int bSeparate = 0; /* Hash each table separately */ |
int iSize = 224; /* Hash algorithm to use */ |
int bDebug = 0; /* Only show the query that would have run */ |
sqlite3_stmt *pStmt; /* For querying tables names */ |
char *zSql; /* SQL to be run */ |
char *zSep; /* Separator */ |
ShellText sSql; /* Complete SQL for the query to run the hash */ |
ShellText sQuery; /* Set of queries used to read all content */ |
open_db(p, 0); |
for(i=1; i<nArg; i++){ |
const char *z = azArg[i]; |
if( z[0]=='-' ){ |
z++; |
if( z[0]=='-' ) z++; |
if( strcmp(z,"schema")==0 ){ |
bSchema = 1; |
}else |
if( strcmp(z,"sha3-224")==0 || strcmp(z,"sha3-256")==0 |
|| strcmp(z,"sha3-384")==0 || strcmp(z,"sha3-512")==0 |
){ |
iSize = atoi(&z[5]); |
}else |
if( strcmp(z,"debug")==0 ){ |
bDebug = 1; |
}else |
{ |
utf8_printf(stderr, "Unknown option \"%s\" on \"%s\"\n", |
azArg[i], azArg[0]); |
showHelp(p->out, azArg[0]); |
rc = 1; |
goto meta_command_exit; |
} |
}else if( zLike ){ |
raw_printf(stderr, "Usage: .sha3sum ?OPTIONS? ?LIKE-PATTERN?\n"); |
rc = 1; |
goto meta_command_exit; |
}else{ |
zLike = z; |
bSeparate = 1; |
if( sqlite3_strlike("sqlite\\_%", zLike, '\\')==0 ) bSchema = 1; |
} |
} |
if( bSchema ){ |
zSql = "SELECT lower(name) FROM sqlite_schema" |
" WHERE type='table' AND coalesce(rootpage,0)>1" |
" UNION ALL SELECT 'sqlite_schema'" |
" ORDER BY 1 collate nocase"; |
}else{ |
zSql = "SELECT lower(name) FROM sqlite_schema" |
" WHERE type='table' AND coalesce(rootpage,0)>1" |
" AND name NOT LIKE 'sqlite_%'" |
" ORDER BY 1 collate nocase"; |
} |
sqlite3_prepare_v2(p->db, zSql, -1, &pStmt, 0); |
initText(&sQuery); |
initText(&sSql); |
appendText(&sSql, "WITH [sha3sum$query](a,b) AS(",0); |
zSep = "VALUES("; |
while( SQLITE_ROW==sqlite3_step(pStmt) ){ |
const char *zTab = (const char*)sqlite3_column_text(pStmt,0); |
if( zLike && sqlite3_strlike(zLike, zTab, 0)!=0 ) continue; |
if( strncmp(zTab, "sqlite_",7)!=0 ){ |
appendText(&sQuery,"SELECT * FROM ", 0); |
appendText(&sQuery,zTab,'"'); |
appendText(&sQuery," NOT INDEXED;", 0); |
}else if( strcmp(zTab, "sqlite_schema")==0 ){ |
appendText(&sQuery,"SELECT type,name,tbl_name,sql FROM sqlite_schema" |
" ORDER BY name;", 0); |
}else if( strcmp(zTab, "sqlite_sequence")==0 ){ |
appendText(&sQuery,"SELECT name,seq FROM sqlite_sequence" |
" ORDER BY name;", 0); |
}else if( strcmp(zTab, "sqlite_stat1")==0 ){ |
appendText(&sQuery,"SELECT tbl,idx,stat FROM sqlite_stat1" |
" ORDER BY tbl,idx;", 0); |
}else if( strcmp(zTab, "sqlite_stat4")==0 ){ |
appendText(&sQuery, "SELECT * FROM ", 0); |
appendText(&sQuery, zTab, 0); |
appendText(&sQuery, " ORDER BY tbl, idx, rowid;\n", 0); |
} |
appendText(&sSql, zSep, 0); |
appendText(&sSql, sQuery.z, '\''); |
sQuery.n = 0; |
appendText(&sSql, ",", 0); |
appendText(&sSql, zTab, '\''); |
zSep = "),("; |
} |
sqlite3_finalize(pStmt); |
if( bSeparate ){ |
zSql = sqlite3_mprintf( |
"%s))" |
" SELECT lower(hex(sha3_query(a,%d))) AS hash, b AS label" |
" FROM [sha3sum$query]", |
sSql.z, iSize); |
}else{ |
zSql = sqlite3_mprintf( |
"%s))" |
" SELECT lower(hex(sha3_query(group_concat(a,''),%d))) AS hash" |
" FROM [sha3sum$query]", |
sSql.z, iSize); |
} |
freeText(&sQuery); |
freeText(&sSql); |
if( bDebug ){ |
utf8_printf(p->out, "%s\n", zSql); |
}else{ |
shell_exec(p, zSql, 0); |
} |
sqlite3_free(zSql); |
}else |
|
#ifndef SQLITE_NOHAVE_SYSTEM |
if( c=='s' |
&& (strncmp(azArg[0], "shell", n)==0 || strncmp(azArg[0],"system",n)==0) |
){ |
char *zCmd; |
int i, x; |
if( nArg<2 ){ |
raw_printf(stderr, "Usage: .system COMMAND\n"); |
rc = 1; |
goto meta_command_exit; |
} |
zCmd = sqlite3_mprintf(strchr(azArg[1],' ')==0?"%s":"\"%s\"", azArg[1]); |
for(i=2; i<nArg; i++){ |
zCmd = sqlite3_mprintf(strchr(azArg[i],' ')==0?"%z %s":"%z \"%s\"", |
zCmd, azArg[i]); |
} |
x = system(zCmd); |
sqlite3_free(zCmd); |
if( x ) raw_printf(stderr, "System command returns %d\n", x); |
}else |
#endif /* !defined(SQLITE_NOHAVE_SYSTEM) */ |
|
if( c=='s' && strncmp(azArg[0], "show", n)==0 ){ |
static const char *azBool[] = { "off", "on", "trigger", "full"}; |
const char *zOut; |
int i; |
if( nArg!=1 ){ |
raw_printf(stderr, "Usage: .show\n"); |
rc = 1; |
goto meta_command_exit; |
} |
utf8_printf(p->out, "%12.12s: %s\n","echo", |
azBool[ShellHasFlag(p, SHFLG_Echo)]); |
utf8_printf(p->out, "%12.12s: %s\n","eqp", azBool[p->autoEQP&3]); |
utf8_printf(p->out, "%12.12s: %s\n","explain", |
p->mode==MODE_Explain ? "on" : p->autoExplain ? "auto" : "off"); |
utf8_printf(p->out,"%12.12s: %s\n","headers", azBool[p->showHeader!=0]); |
utf8_printf(p->out, "%12.12s: %s\n","mode", modeDescr[p->mode]); |
utf8_printf(p->out, "%12.12s: ", "nullvalue"); |
output_c_string(p->out, p->nullValue); |
raw_printf(p->out, "\n"); |
utf8_printf(p->out,"%12.12s: %s\n","output", |
strlen30(p->outfile) ? p->outfile : "stdout"); |
utf8_printf(p->out,"%12.12s: ", "colseparator"); |
output_c_string(p->out, p->colSeparator); |
raw_printf(p->out, "\n"); |
utf8_printf(p->out,"%12.12s: ", "rowseparator"); |
output_c_string(p->out, p->rowSeparator); |
raw_printf(p->out, "\n"); |
switch( p->statsOn ){ |
case 0: zOut = "off"; break; |
default: zOut = "on"; break; |
case 2: zOut = "stmt"; break; |
case 3: zOut = "vmstep"; break; |
} |
utf8_printf(p->out, "%12.12s: %s\n","stats", zOut); |
utf8_printf(p->out, "%12.12s: ", "width"); |
for (i=0;i<p->nWidth;i++) { |
raw_printf(p->out, "%d ", p->colWidth[i]); |
} |
raw_printf(p->out, "\n"); |
utf8_printf(p->out, "%12.12s: %s\n", "filename", |
p->zDbFilename ? p->zDbFilename : ""); |
}else |
|
if( c=='s' && strncmp(azArg[0], "stats", n)==0 ){ |
if( nArg==2 ){ |
if( strcmp(azArg[1],"stmt")==0 ){ |
p->statsOn = 2; |
}else if( strcmp(azArg[1],"vmstep")==0 ){ |
p->statsOn = 3; |
}else{ |
p->statsOn = (u8)booleanValue(azArg[1]); |
} |
}else if( nArg==1 ){ |
display_stats(p->db, p, 0); |
}else{ |
raw_printf(stderr, "Usage: .stats ?on|off|stmt|vmstep?\n"); |
rc = 1; |
} |
}else |
|
if( (c=='t' && n>1 && strncmp(azArg[0], "tables", n)==0) |
|| (c=='i' && (strncmp(azArg[0], "indices", n)==0 |
|| strncmp(azArg[0], "indexes", n)==0) ) |
){ |
sqlite3_stmt *pStmt; |
char **azResult; |
int nRow, nAlloc; |
int ii; |
ShellText s; |
initText(&s); |
open_db(p, 0); |
rc = sqlite3_prepare_v2(p->db, "PRAGMA database_list", -1, &pStmt, 0); |
if( rc ){ |
sqlite3_finalize(pStmt); |
return shellDatabaseError(p->db); |
} |
|
if( nArg>2 && c=='i' ){ |
/* It is an historical accident that the .indexes command shows an error |
** when called with the wrong number of arguments whereas the .tables |
** command does not. */ |
raw_printf(stderr, "Usage: .indexes ?LIKE-PATTERN?\n"); |
rc = 1; |
sqlite3_finalize(pStmt); |
goto meta_command_exit; |
} |
for(ii=0; sqlite3_step(pStmt)==SQLITE_ROW; ii++){ |
const char *zDbName = (const char*)sqlite3_column_text(pStmt, 1); |
if( zDbName==0 ) continue; |
if( s.z && s.z[0] ) appendText(&s, " UNION ALL ", 0); |
if( sqlite3_stricmp(zDbName, "main")==0 ){ |
appendText(&s, "SELECT name FROM ", 0); |
}else{ |
appendText(&s, "SELECT ", 0); |
appendText(&s, zDbName, '\''); |
appendText(&s, "||'.'||name FROM ", 0); |
} |
appendText(&s, zDbName, '"'); |
appendText(&s, ".sqlite_schema ", 0); |
if( c=='t' ){ |
appendText(&s," WHERE type IN ('table','view')" |
" AND name NOT LIKE 'sqlite_%'" |
" AND name LIKE ?1", 0); |
}else{ |
appendText(&s," WHERE type='index'" |
" AND tbl_name LIKE ?1", 0); |
} |
} |
rc = sqlite3_finalize(pStmt); |
appendText(&s, " ORDER BY 1", 0); |
rc = sqlite3_prepare_v2(p->db, s.z, -1, &pStmt, 0); |
freeText(&s); |
if( rc ) return shellDatabaseError(p->db); |
|
/* Run the SQL statement prepared by the above block. Store the results |
** as an array of nul-terminated strings in azResult[]. */ |
nRow = nAlloc = 0; |
azResult = 0; |
if( nArg>1 ){ |
sqlite3_bind_text(pStmt, 1, azArg[1], -1, SQLITE_TRANSIENT); |
}else{ |
sqlite3_bind_text(pStmt, 1, "%", -1, SQLITE_STATIC); |
} |
while( sqlite3_step(pStmt)==SQLITE_ROW ){ |
if( nRow>=nAlloc ){ |
char **azNew; |
int n2 = nAlloc*2 + 10; |
azNew = sqlite3_realloc64(azResult, sizeof(azResult[0])*n2); |
if( azNew==0 ) shell_out_of_memory(); |
nAlloc = n2; |
azResult = azNew; |
} |
azResult[nRow] = sqlite3_mprintf("%s", sqlite3_column_text(pStmt, 0)); |
if( 0==azResult[nRow] ) shell_out_of_memory(); |
nRow++; |
} |
if( sqlite3_finalize(pStmt)!=SQLITE_OK ){ |
rc = shellDatabaseError(p->db); |
} |
|
/* Pretty-print the contents of array azResult[] to the output */ |
if( rc==0 && nRow>0 ){ |
int len, maxlen = 0; |
int i, j; |
int nPrintCol, nPrintRow; |
for(i=0; i<nRow; i++){ |
len = strlen30(azResult[i]); |
if( len>maxlen ) maxlen = len; |
} |
nPrintCol = 80/(maxlen+2); |
if( nPrintCol<1 ) nPrintCol = 1; |
nPrintRow = (nRow + nPrintCol - 1)/nPrintCol; |
for(i=0; i<nPrintRow; i++){ |
for(j=i; j<nRow; j+=nPrintRow){ |
char *zSp = j<nPrintRow ? "" : " "; |
utf8_printf(p->out, "%s%-*s", zSp, maxlen, |
azResult[j] ? azResult[j]:""); |
} |
raw_printf(p->out, "\n"); |
} |
} |
|
for(ii=0; ii<nRow; ii++) sqlite3_free(azResult[ii]); |
sqlite3_free(azResult); |
}else |
|
/* Begin redirecting output to the file "testcase-out.txt" */ |
if( c=='t' && strcmp(azArg[0],"testcase")==0 ){ |
output_reset(p); |
p->out = output_file_open("testcase-out.txt", 0); |
if( p->out==0 ){ |
raw_printf(stderr, "Error: cannot open 'testcase-out.txt'\n"); |
} |
if( nArg>=2 ){ |
sqlite3_snprintf(sizeof(p->zTestcase), p->zTestcase, "%s", azArg[1]); |
}else{ |
sqlite3_snprintf(sizeof(p->zTestcase), p->zTestcase, "?"); |
} |
}else |
|
#ifndef SQLITE_UNTESTABLE |
if( c=='t' && n>=8 && strncmp(azArg[0], "testctrl", n)==0 ){ |
static const struct { |
const char *zCtrlName; /* Name of a test-control option */ |
int ctrlCode; /* Integer code for that option */ |
const char *zUsage; /* Usage notes */ |
} aCtrl[] = { |
{ "always", SQLITE_TESTCTRL_ALWAYS, "BOOLEAN" }, |
{ "assert", SQLITE_TESTCTRL_ASSERT, "BOOLEAN" }, |
/*{ "benign_malloc_hooks",SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS, "" },*/ |
/*{ "bitvec_test", SQLITE_TESTCTRL_BITVEC_TEST, "" },*/ |
{ "byteorder", SQLITE_TESTCTRL_BYTEORDER, "" }, |
{ "extra_schema_checks",SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS,"BOOLEAN" }, |
/*{ "fault_install", SQLITE_TESTCTRL_FAULT_INSTALL, "" },*/ |
{ "imposter", SQLITE_TESTCTRL_IMPOSTER, "SCHEMA ON/OFF ROOTPAGE"}, |
{ "internal_functions", SQLITE_TESTCTRL_INTERNAL_FUNCTIONS, "" }, |
{ "localtime_fault", SQLITE_TESTCTRL_LOCALTIME_FAULT,"BOOLEAN" }, |
{ "never_corrupt", SQLITE_TESTCTRL_NEVER_CORRUPT, "BOOLEAN" }, |
{ "optimizations", SQLITE_TESTCTRL_OPTIMIZATIONS, "DISABLE-MASK" }, |
#ifdef YYCOVERAGE |
{ "parser_coverage", SQLITE_TESTCTRL_PARSER_COVERAGE, "" }, |
#endif |
{ "pending_byte", SQLITE_TESTCTRL_PENDING_BYTE, "OFFSET " }, |
{ "prng_restore", SQLITE_TESTCTRL_PRNG_RESTORE, "" }, |
{ "prng_save", SQLITE_TESTCTRL_PRNG_SAVE, "" }, |
{ "prng_seed", SQLITE_TESTCTRL_PRNG_SEED, "SEED ?db?" }, |
{ "seek_count", SQLITE_TESTCTRL_SEEK_COUNT, "" }, |
}; |
int testctrl = -1; |
int iCtrl = -1; |
int rc2 = 0; /* 0: usage. 1: %d 2: %x 3: no-output */ |
int isOk = 0; |
int i, n2; |
const char *zCmd = 0; |
|
open_db(p, 0); |
zCmd = nArg>=2 ? azArg[1] : "help"; |
|
/* The argument can optionally begin with "-" or "--" */ |
if( zCmd[0]=='-' && zCmd[1] ){ |
zCmd++; |
if( zCmd[0]=='-' && zCmd[1] ) zCmd++; |
} |
|
/* --help lists all test-controls */ |
if( strcmp(zCmd,"help")==0 ){ |
utf8_printf(p->out, "Available test-controls:\n"); |
for(i=0; i<ArraySize(aCtrl); i++){ |
utf8_printf(p->out, " .testctrl %s %s\n", |
aCtrl[i].zCtrlName, aCtrl[i].zUsage); |
} |
rc = 1; |
goto meta_command_exit; |
} |
|
/* convert testctrl text option to value. allow any unique prefix |
** of the option name, or a numerical value. */ |
n2 = strlen30(zCmd); |
for(i=0; i<ArraySize(aCtrl); i++){ |
if( strncmp(zCmd, aCtrl[i].zCtrlName, n2)==0 ){ |
if( testctrl<0 ){ |
testctrl = aCtrl[i].ctrlCode; |
iCtrl = i; |
}else{ |
utf8_printf(stderr, "Error: ambiguous test-control: \"%s\"\n" |
"Use \".testctrl --help\" for help\n", zCmd); |
rc = 1; |
goto meta_command_exit; |
} |
} |
} |
if( testctrl<0 ){ |
utf8_printf(stderr,"Error: unknown test-control: %s\n" |
"Use \".testctrl --help\" for help\n", zCmd); |
}else{ |
switch(testctrl){ |
|
/* sqlite3_test_control(int, db, int) */ |
case SQLITE_TESTCTRL_OPTIMIZATIONS: |
if( nArg==3 ){ |
unsigned int opt = (unsigned int)strtol(azArg[2], 0, 0); |
rc2 = sqlite3_test_control(testctrl, p->db, opt); |
isOk = 3; |
} |
break; |
|
/* sqlite3_test_control(int) */ |
case SQLITE_TESTCTRL_PRNG_SAVE: |
case SQLITE_TESTCTRL_PRNG_RESTORE: |
case SQLITE_TESTCTRL_BYTEORDER: |
if( nArg==2 ){ |
rc2 = sqlite3_test_control(testctrl); |
isOk = testctrl==SQLITE_TESTCTRL_BYTEORDER ? 1 : 3; |
} |
break; |
|
/* sqlite3_test_control(int, uint) */ |
case SQLITE_TESTCTRL_PENDING_BYTE: |
if( nArg==3 ){ |
unsigned int opt = (unsigned int)integerValue(azArg[2]); |
rc2 = sqlite3_test_control(testctrl, opt); |
isOk = 3; |
} |
break; |
|
/* sqlite3_test_control(int, int, sqlite3*) */ |
case SQLITE_TESTCTRL_PRNG_SEED: |
if( nArg==3 || nArg==4 ){ |
int ii = (int)integerValue(azArg[2]); |
sqlite3 *db; |
if( ii==0 && strcmp(azArg[2],"random")==0 ){ |
sqlite3_randomness(sizeof(ii),&ii); |
printf("-- random seed: %d\n", ii); |
} |
if( nArg==3 ){ |
db = 0; |
}else{ |
db = p->db; |
/* Make sure the schema has been loaded */ |
sqlite3_table_column_metadata(db, 0, "x", 0, 0, 0, 0, 0, 0); |
} |
rc2 = sqlite3_test_control(testctrl, ii, db); |
isOk = 3; |
} |
break; |
|
/* sqlite3_test_control(int, int) */ |
case SQLITE_TESTCTRL_ASSERT: |
case SQLITE_TESTCTRL_ALWAYS: |
if( nArg==3 ){ |
int opt = booleanValue(azArg[2]); |
rc2 = sqlite3_test_control(testctrl, opt); |
isOk = 1; |
} |
break; |
|
/* sqlite3_test_control(int, int) */ |
case SQLITE_TESTCTRL_LOCALTIME_FAULT: |
case SQLITE_TESTCTRL_NEVER_CORRUPT: |
if( nArg==3 ){ |
int opt = booleanValue(azArg[2]); |
rc2 = sqlite3_test_control(testctrl, opt); |
isOk = 3; |
} |
break; |
|
/* sqlite3_test_control(sqlite3*) */ |
case SQLITE_TESTCTRL_INTERNAL_FUNCTIONS: |
rc2 = sqlite3_test_control(testctrl, p->db); |
isOk = 3; |
break; |
|
case SQLITE_TESTCTRL_IMPOSTER: |
if( nArg==5 ){ |
rc2 = sqlite3_test_control(testctrl, p->db, |
azArg[2], |
integerValue(azArg[3]), |
integerValue(azArg[4])); |
isOk = 3; |
} |
break; |
|
case SQLITE_TESTCTRL_SEEK_COUNT: { |
u64 x = 0; |
rc2 = sqlite3_test_control(testctrl, p->db, &x); |
utf8_printf(p->out, "%llu\n", x); |
isOk = 3; |
break; |
} |
|
#ifdef YYCOVERAGE |
case SQLITE_TESTCTRL_PARSER_COVERAGE: |
if( nArg==2 ){ |
sqlite3_test_control(testctrl, p->out); |
isOk = 3; |
} |
#endif |
} |
} |
if( isOk==0 && iCtrl>=0 ){ |
utf8_printf(p->out, "Usage: .testctrl %s %s\n", zCmd,aCtrl[iCtrl].zUsage); |
rc = 1; |
}else if( isOk==1 ){ |
raw_printf(p->out, "%d\n", rc2); |
}else if( isOk==2 ){ |
raw_printf(p->out, "0x%08x\n", rc2); |
} |
}else |
#endif /* !defined(SQLITE_UNTESTABLE) */ |
|
if( c=='t' && n>4 && strncmp(azArg[0], "timeout", n)==0 ){ |
open_db(p, 0); |
sqlite3_busy_timeout(p->db, nArg>=2 ? (int)integerValue(azArg[1]) : 0); |
}else |
|
if( c=='t' && n>=5 && strncmp(azArg[0], "timer", n)==0 ){ |
if( nArg==2 ){ |
enableTimer = booleanValue(azArg[1]); |
if( enableTimer && !HAS_TIMER ){ |
raw_printf(stderr, "Error: timer not available on this system.\n"); |
enableTimer = 0; |
} |
}else{ |
raw_printf(stderr, "Usage: .timer on|off\n"); |
rc = 1; |
} |
}else |
|
#ifndef SQLITE_OMIT_TRACE |
if( c=='t' && strncmp(azArg[0], "trace", n)==0 ){ |
int mType = 0; |
int jj; |
open_db(p, 0); |
for(jj=1; jj<nArg; jj++){ |
const char *z = azArg[jj]; |
if( z[0]=='-' ){ |
if( optionMatch(z, "expanded") ){ |
p->eTraceType = SHELL_TRACE_EXPANDED; |
} |
#ifdef SQLITE_ENABLE_NORMALIZE |
else if( optionMatch(z, "normalized") ){ |
p->eTraceType = SHELL_TRACE_NORMALIZED; |
} |
#endif |
else if( optionMatch(z, "plain") ){ |
p->eTraceType = SHELL_TRACE_PLAIN; |
} |
else if( optionMatch(z, "profile") ){ |
mType |= SQLITE_TRACE_PROFILE; |
} |
else if( optionMatch(z, "row") ){ |
mType |= SQLITE_TRACE_ROW; |
} |
else if( optionMatch(z, "stmt") ){ |
mType |= SQLITE_TRACE_STMT; |
} |
else if( optionMatch(z, "close") ){ |
mType |= SQLITE_TRACE_CLOSE; |
} |
else { |
raw_printf(stderr, "Unknown option \"%s\" on \".trace\"\n", z); |
rc = 1; |
goto meta_command_exit; |
} |
}else{ |
output_file_close(p->traceOut); |
p->traceOut = output_file_open(azArg[1], 0); |
} |
} |
if( p->traceOut==0 ){ |
sqlite3_trace_v2(p->db, 0, 0, 0); |
}else{ |
if( mType==0 ) mType = SQLITE_TRACE_STMT; |
sqlite3_trace_v2(p->db, mType, sql_trace_callback, p); |
} |
}else |
#endif /* !defined(SQLITE_OMIT_TRACE) */ |
|
#if defined(SQLITE_DEBUG) && !defined(SQLITE_OMIT_VIRTUALTABLE) |
if( c=='u' && strncmp(azArg[0], "unmodule", n)==0 ){ |
int ii; |
int lenOpt; |
char *zOpt; |
if( nArg<2 ){ |
raw_printf(stderr, "Usage: .unmodule [--allexcept] NAME ...\n"); |
rc = 1; |
goto meta_command_exit; |
} |
open_db(p, 0); |
zOpt = azArg[1]; |
if( zOpt[0]=='-' && zOpt[1]=='-' && zOpt[2]!=0 ) zOpt++; |
lenOpt = (int)strlen(zOpt); |
if( lenOpt>=3 && strncmp(zOpt, "-allexcept",lenOpt)==0 ){ |
assert( azArg[nArg]==0 ); |
sqlite3_drop_modules(p->db, nArg>2 ? (const char**)(azArg+2) : 0); |
}else{ |
for(ii=1; ii<nArg; ii++){ |
sqlite3_create_module(p->db, azArg[ii], 0, 0); |
} |
} |
}else |
#endif |
|
#if SQLITE_USER_AUTHENTICATION |
if( c=='u' && strncmp(azArg[0], "user", n)==0 ){ |
if( nArg<2 ){ |
raw_printf(stderr, "Usage: .user SUBCOMMAND ...\n"); |
rc = 1; |
goto meta_command_exit; |
} |
open_db(p, 0); |
if( strcmp(azArg[1],"login")==0 ){ |
if( nArg!=4 ){ |
raw_printf(stderr, "Usage: .user login USER PASSWORD\n"); |
rc = 1; |
goto meta_command_exit; |
} |
rc = sqlite3_user_authenticate(p->db, azArg[2], azArg[3], |
strlen30(azArg[3])); |
if( rc ){ |
utf8_printf(stderr, "Authentication failed for user %s\n", azArg[2]); |
rc = 1; |
} |
}else if( strcmp(azArg[1],"add")==0 ){ |
if( nArg!=5 ){ |
raw_printf(stderr, "Usage: .user add USER PASSWORD ISADMIN\n"); |
rc = 1; |
goto meta_command_exit; |
} |
rc = sqlite3_user_add(p->db, azArg[2], azArg[3], strlen30(azArg[3]), |
booleanValue(azArg[4])); |
if( rc ){ |
raw_printf(stderr, "User-Add failed: %d\n", rc); |
rc = 1; |
} |
}else if( strcmp(azArg[1],"edit")==0 ){ |
if( nArg!=5 ){ |
raw_printf(stderr, "Usage: .user edit USER PASSWORD ISADMIN\n"); |
rc = 1; |
goto meta_command_exit; |
} |
rc = sqlite3_user_change(p->db, azArg[2], azArg[3], strlen30(azArg[3]), |
booleanValue(azArg[4])); |
if( rc ){ |
raw_printf(stderr, "User-Edit failed: %d\n", rc); |
rc = 1; |
} |
}else if( strcmp(azArg[1],"delete")==0 ){ |
if( nArg!=3 ){ |
raw_printf(stderr, "Usage: .user delete USER\n"); |
rc = 1; |
goto meta_command_exit; |
} |
rc = sqlite3_user_delete(p->db, azArg[2]); |
if( rc ){ |
raw_printf(stderr, "User-Delete failed: %d\n", rc); |
rc = 1; |
} |
}else{ |
raw_printf(stderr, "Usage: .user login|add|edit|delete ...\n"); |
rc = 1; |
goto meta_command_exit; |
} |
}else |
#endif /* SQLITE_USER_AUTHENTICATION */ |
|
if( c=='v' && strncmp(azArg[0], "version", n)==0 ){ |
utf8_printf(p->out, "SQLite %s %s\n" /*extra-version-info*/, |
sqlite3_libversion(), sqlite3_sourceid()); |
#if SQLITE_HAVE_ZLIB |
utf8_printf(p->out, "zlib version %s\n", zlibVersion()); |
#endif |
#define CTIMEOPT_VAL_(opt) #opt |
#define CTIMEOPT_VAL(opt) CTIMEOPT_VAL_(opt) |
#if defined(__clang__) && defined(__clang_major__) |
utf8_printf(p->out, "clang-" CTIMEOPT_VAL(__clang_major__) "." |
CTIMEOPT_VAL(__clang_minor__) "." |
CTIMEOPT_VAL(__clang_patchlevel__) "\n"); |
#elif defined(_MSC_VER) |
utf8_printf(p->out, "msvc-" CTIMEOPT_VAL(_MSC_VER) "\n"); |
#elif defined(__GNUC__) && defined(__VERSION__) |
utf8_printf(p->out, "gcc-" __VERSION__ "\n"); |
#endif |
}else |
|
if( c=='v' && strncmp(azArg[0], "vfsinfo", n)==0 ){ |
const char *zDbName = nArg==2 ? azArg[1] : "main"; |
sqlite3_vfs *pVfs = 0; |
if( p->db ){ |
sqlite3_file_control(p->db, zDbName, SQLITE_FCNTL_VFS_POINTER, &pVfs); |
if( pVfs ){ |
utf8_printf(p->out, "vfs.zName = \"%s\"\n", pVfs->zName); |
raw_printf(p->out, "vfs.iVersion = %d\n", pVfs->iVersion); |
raw_printf(p->out, "vfs.szOsFile = %d\n", pVfs->szOsFile); |
raw_printf(p->out, "vfs.mxPathname = %d\n", pVfs->mxPathname); |
} |
} |
}else |
|
if( c=='v' && strncmp(azArg[0], "vfslist", n)==0 ){ |
sqlite3_vfs *pVfs; |
sqlite3_vfs *pCurrent = 0; |
if( p->db ){ |
sqlite3_file_control(p->db, "main", SQLITE_FCNTL_VFS_POINTER, &pCurrent); |
} |
for(pVfs=sqlite3_vfs_find(0); pVfs; pVfs=pVfs->pNext){ |
utf8_printf(p->out, "vfs.zName = \"%s\"%s\n", pVfs->zName, |
pVfs==pCurrent ? " <--- CURRENT" : ""); |
raw_printf(p->out, "vfs.iVersion = %d\n", pVfs->iVersion); |
raw_printf(p->out, "vfs.szOsFile = %d\n", pVfs->szOsFile); |
raw_printf(p->out, "vfs.mxPathname = %d\n", pVfs->mxPathname); |
if( pVfs->pNext ){ |
raw_printf(p->out, "-----------------------------------\n"); |
} |
} |
}else |
|
if( c=='v' && strncmp(azArg[0], "vfsname", n)==0 ){ |
const char *zDbName = nArg==2 ? azArg[1] : "main"; |
char *zVfsName = 0; |
if( p->db ){ |
sqlite3_file_control(p->db, zDbName, SQLITE_FCNTL_VFSNAME, &zVfsName); |
if( zVfsName ){ |
utf8_printf(p->out, "%s\n", zVfsName); |
sqlite3_free(zVfsName); |
} |
} |
}else |
|
if( c=='w' && strncmp(azArg[0], "wheretrace", n)==0 ){ |
unsigned int x = nArg>=2 ? (unsigned int)integerValue(azArg[1]) : 0xffffffff; |
sqlite3_test_control(SQLITE_TESTCTRL_TRACEFLAGS, 3, &x); |
}else |
|
if( c=='w' && strncmp(azArg[0], "width", n)==0 ){ |
int j; |
assert( nArg<=ArraySize(azArg) ); |
p->nWidth = nArg-1; |
p->colWidth = realloc(p->colWidth, p->nWidth*sizeof(int)*2); |
if( p->colWidth==0 && p->nWidth>0 ) shell_out_of_memory(); |
if( p->nWidth ) p->actualWidth = &p->colWidth[p->nWidth]; |
for(j=1; j<nArg; j++){ |
p->colWidth[j-1] = (int)integerValue(azArg[j]); |
} |
}else |
|
{ |
utf8_printf(stderr, "Error: unknown command or invalid arguments: " |
" \"%s\". Enter \".help\" for help\n", azArg[0]); |
rc = 1; |
} |
|
meta_command_exit: |
if( p->outCount ){ |
p->outCount--; |
if( p->outCount==0 ) output_reset(p); |
} |
return rc; |
} |
|
/* |
** Return TRUE if a semicolon occurs anywhere in the first N characters |
** of string z[]. |
*/ |
static int line_contains_semicolon(const char *z, int N){ |
int i; |
for(i=0; i<N; i++){ if( z[i]==';' ) return 1; } |
return 0; |
} |
|
/* |
** Test to see if a line consists entirely of whitespace. |
*/ |
static int _all_whitespace(const char *z){ |
for(; *z; z++){ |
if( IsSpace(z[0]) ) continue; |
if( *z=='/' && z[1]=='*' ){ |
z += 2; |
while( *z && (*z!='*' || z[1]!='/') ){ z++; } |
if( *z==0 ) return 0; |
z++; |
continue; |
} |
if( *z=='-' && z[1]=='-' ){ |
z += 2; |
while( *z && *z!='\n' ){ z++; } |
if( *z==0 ) return 1; |
continue; |
} |
return 0; |
} |
return 1; |
} |
|
/* |
** Return TRUE if the line typed in is an SQL command terminator other |
** than a semi-colon. The SQL Server style "go" command is understood |
** as is the Oracle "/". |
*/ |
static int line_is_command_terminator(const char *zLine){ |
while( IsSpace(zLine[0]) ){ zLine++; }; |
if( zLine[0]=='/' && _all_whitespace(&zLine[1]) ){ |
return 1; /* Oracle */ |
} |
if( ToLower(zLine[0])=='g' && ToLower(zLine[1])=='o' |
&& _all_whitespace(&zLine[2]) ){ |
return 1; /* SQL Server */ |
} |
return 0; |
} |
|
/* |
** We need a default sqlite3_complete() implementation to use in case |
** the shell is compiled with SQLITE_OMIT_COMPLETE. The default assumes |
** any arbitrary text is a complete SQL statement. This is not very |
** user-friendly, but it does seem to work. |
*/ |
#ifdef SQLITE_OMIT_COMPLETE |
#define sqlite3_complete(x) 1 |
#endif |
|
/* |
** Return true if zSql is a complete SQL statement. Return false if it |
** ends in the middle of a string literal or C-style comment. |
*/ |
static int line_is_complete(char *zSql, int nSql){ |
int rc; |
if( zSql==0 ) return 1; |
zSql[nSql] = ';'; |
zSql[nSql+1] = 0; |
rc = sqlite3_complete(zSql); |
zSql[nSql] = 0; |
return rc; |
} |
|
/* |
** Run a single line of SQL. Return the number of errors. |
*/ |
static int runOneSqlLine(ShellState *p, char *zSql, FILE *in, int startline){ |
int rc; |
char *zErrMsg = 0; |
|
open_db(p, 0); |
if( ShellHasFlag(p,SHFLG_Backslash) ) resolve_backslashes(zSql); |
if( p->flgProgress & SHELL_PROGRESS_RESET ) p->nProgress = 0; |
BEGIN_TIMER; |
rc = shell_exec(p, zSql, &zErrMsg); |
END_TIMER; |
if( rc || zErrMsg ){ |
char zPrefix[100]; |
if( in!=0 || !stdin_is_interactive ){ |
sqlite3_snprintf(sizeof(zPrefix), zPrefix, |
"Error: near line %d:", startline); |
}else{ |
sqlite3_snprintf(sizeof(zPrefix), zPrefix, "Error:"); |
} |
if( zErrMsg!=0 ){ |
utf8_printf(stderr, "%s %s\n", zPrefix, zErrMsg); |
sqlite3_free(zErrMsg); |
zErrMsg = 0; |
}else{ |
utf8_printf(stderr, "%s %s\n", zPrefix, sqlite3_errmsg(p->db)); |
} |
return 1; |
}else if( ShellHasFlag(p, SHFLG_CountChanges) ){ |
raw_printf(p->out, "changes: %3d total_changes: %d\n", |
sqlite3_changes(p->db), sqlite3_total_changes(p->db)); |
} |
return 0; |
} |
|
|
/* |
** Read input from *in and process it. If *in==0 then input |
** is interactive - the user is typing it it. Otherwise, input |
** is coming from a file or device. A prompt is issued and history |
** is saved only if input is interactive. An interrupt signal will |
** cause this routine to exit immediately, unless input is interactive. |
** |
** Return the number of errors. |
*/ |
static int process_input(ShellState *p){ |
char *zLine = 0; /* A single input line */ |
char *zSql = 0; /* Accumulated SQL text */ |
int nLine; /* Length of current line */ |
int nSql = 0; /* Bytes of zSql[] used */ |
int nAlloc = 0; /* Allocated zSql[] space */ |
int nSqlPrior = 0; /* Bytes of zSql[] used by prior line */ |
int rc; /* Error code */ |
int errCnt = 0; /* Number of errors seen */ |
int startline = 0; /* Line number for start of current input */ |
|
p->lineno = 0; |
while( errCnt==0 || !bail_on_error || (p->in==0 && stdin_is_interactive) ){ |
fflush(p->out); |
zLine = one_input_line(p->in, zLine, nSql>0); |
if( zLine==0 ){ |
/* End of input */ |
if( p->in==0 && stdin_is_interactive ) printf("\n"); |
break; |
} |
if( seenInterrupt ){ |
if( p->in!=0 ) break; |
seenInterrupt = 0; |
} |
p->lineno++; |
if( nSql==0 && _all_whitespace(zLine) ){ |
if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zLine); |
continue; |
} |
if( zLine && (zLine[0]=='.' || zLine[0]=='#') && nSql==0 ){ |
if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zLine); |
if( zLine[0]=='.' ){ |
rc = do_meta_command(zLine, p); |
if( rc==2 ){ /* exit requested */ |
break; |
}else if( rc ){ |
errCnt++; |
} |
} |
continue; |
} |
if( line_is_command_terminator(zLine) && line_is_complete(zSql, nSql) ){ |
memcpy(zLine,";",2); |
} |
nLine = strlen30(zLine); |
if( nSql+nLine+2>=nAlloc ){ |
nAlloc = nSql+nLine+100; |
zSql = realloc(zSql, nAlloc); |
if( zSql==0 ) shell_out_of_memory(); |
} |
nSqlPrior = nSql; |
if( nSql==0 ){ |
int i; |
for(i=0; zLine[i] && IsSpace(zLine[i]); i++){} |
assert( nAlloc>0 && zSql!=0 ); |
memcpy(zSql, zLine+i, nLine+1-i); |
startline = p->lineno; |
nSql = nLine-i; |
}else{ |
zSql[nSql++] = '\n'; |
memcpy(zSql+nSql, zLine, nLine+1); |
nSql += nLine; |
} |
if( nSql && line_contains_semicolon(&zSql[nSqlPrior], nSql-nSqlPrior) |
&& sqlite3_complete(zSql) ){ |
errCnt += runOneSqlLine(p, zSql, p->in, startline); |
nSql = 0; |
if( p->outCount ){ |
output_reset(p); |
p->outCount = 0; |
}else{ |
clearTempFile(p); |
} |
}else if( nSql && _all_whitespace(zSql) ){ |
if( ShellHasFlag(p, SHFLG_Echo) ) printf("%s\n", zSql); |
nSql = 0; |
} |
} |
if( nSql && !_all_whitespace(zSql) ){ |
errCnt += runOneSqlLine(p, zSql, p->in, startline); |
} |
free(zSql); |
free(zLine); |
return errCnt>0; |
} |
|
/* |
** Return a pathname which is the user's home directory. A |
** 0 return indicates an error of some kind. |
*/ |
static char *find_home_dir(int clearFlag){ |
static char *home_dir = NULL; |
if( clearFlag ){ |
free(home_dir); |
home_dir = 0; |
return 0; |
} |
if( home_dir ) return home_dir; |
|
#ifdef _KOLIBRI |
home_dir = "/sys"; |
|
#elif !defined(_WIN32) && !defined(WIN32) && !defined(_WIN32_WCE) \ |
&& !defined(__RTP__) && !defined(_WRS_KERNEL) |
{ |
struct passwd *pwent; |
uid_t uid = getuid(); |
if( (pwent=getpwuid(uid)) != NULL) { |
home_dir = pwent->pw_dir; |
} |
} |
#endif |
|
#if defined(_WIN32_WCE) |
/* Windows CE (arm-wince-mingw32ce-gcc) does not provide getenv() |
*/ |
home_dir = "/"; |
#else |
|
#if defined(_WIN32) || defined(WIN32) |
if (!home_dir) { |
home_dir = getenv("USERPROFILE"); |
} |
#endif |
|
if (!home_dir) { |
home_dir = getenv("HOME"); |
} |
|
#if defined(_WIN32) || defined(WIN32) |
if (!home_dir) { |
char *zDrive, *zPath; |
int n; |
zDrive = getenv("HOMEDRIVE"); |
zPath = getenv("HOMEPATH"); |
if( zDrive && zPath ){ |
n = strlen30(zDrive) + strlen30(zPath) + 1; |
home_dir = malloc( n ); |
if( home_dir==0 ) return 0; |
sqlite3_snprintf(n, home_dir, "%s%s", zDrive, zPath); |
return home_dir; |
} |
home_dir = "c:\\"; |
} |
#endif |
|
#endif /* !_WIN32_WCE */ |
|
if( home_dir ){ |
int n = strlen30(home_dir) + 1; |
char *z = malloc( n ); |
if( z ) memcpy(z, home_dir, n); |
home_dir = z; |
} |
|
return home_dir; |
} |
|
/* |
** Read input from the file given by sqliterc_override. Or if that |
** parameter is NULL, take input from ~/.sqliterc |
** |
** Returns the number of errors. |
*/ |
static void process_sqliterc( |
ShellState *p, /* Configuration data */ |
const char *sqliterc_override /* Name of config file. NULL to use default */ |
){ |
char *home_dir = NULL; |
const char *sqliterc = sqliterc_override; |
char *zBuf = 0; |
FILE *inSaved = p->in; |
int savedLineno = p->lineno; |
|
if (sqliterc == NULL) { |
home_dir = find_home_dir(0); |
if( home_dir==0 ){ |
raw_printf(stderr, "-- warning: cannot find home directory;" |
" cannot read ~/.sqliterc\n"); |
return; |
} |
zBuf = sqlite3_mprintf("%s/.sqliterc",home_dir); |
sqliterc = zBuf; |
} |
p->in = fopen(sqliterc,"rb"); |
if( p->in ){ |
if( stdin_is_interactive ){ |
utf8_printf(stderr,"-- Loading resources from %s\n",sqliterc); |
} |
if( process_input(p) && bail_on_error ) exit(1); |
fclose(p->in); |
}else if( sqliterc_override!=0 ){ |
utf8_printf(stderr,"cannot open: \"%s\"\n", sqliterc); |
if( bail_on_error ) exit(1); |
} |
p->in = inSaved; |
p->lineno = savedLineno; |
sqlite3_free(zBuf); |
} |
|
/* |
** Show available command line options |
*/ |
static const char zOptions[] = |
#if defined(SQLITE_HAVE_ZLIB) && !defined(SQLITE_OMIT_VIRTUALTABLE) |
" -A ARGS... run \".archive ARGS\" and exit\n" |
#endif |
" -append append the database to the end of the file\n" |
" -ascii set output mode to 'ascii'\n" |
" -bail stop after hitting an error\n" |
" -batch force batch I/O\n" |
" -box set output mode to 'box'\n" |
" -column set output mode to 'column'\n" |
" -cmd COMMAND run \"COMMAND\" before reading stdin\n" |
" -csv set output mode to 'csv'\n" |
#if defined(SQLITE_ENABLE_DESERIALIZE) |
" -deserialize open the database using sqlite3_deserialize()\n" |
#endif |
" -echo print commands before execution\n" |
" -init FILENAME read/process named file\n" |
" -[no]header turn headers on or off\n" |
#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5) |
" -heap SIZE Size of heap for memsys3 or memsys5\n" |
#endif |
" -help show this message\n" |
" -html set output mode to HTML\n" |
" -interactive force interactive I/O\n" |
" -json set output mode to 'json'\n" |
" -line set output mode to 'line'\n" |
" -list set output mode to 'list'\n" |
" -lookaside SIZE N use N entries of SZ bytes for lookaside memory\n" |
" -markdown set output mode to 'markdown'\n" |
#if defined(SQLITE_ENABLE_DESERIALIZE) |
" -maxsize N maximum size for a --deserialize database\n" |
#endif |
" -memtrace trace all memory allocations and deallocations\n" |
" -mmap N default mmap size set to N\n" |
#ifdef SQLITE_ENABLE_MULTIPLEX |
" -multiplex enable the multiplexor VFS\n" |
#endif |
" -newline SEP set output row separator. Default: '\\n'\n" |
" -nofollow refuse to open symbolic links to database files\n" |
" -nullvalue TEXT set text string for NULL values. Default ''\n" |
" -pagecache SIZE N use N slots of SZ bytes each for page cache memory\n" |
" -quote set output mode to 'quote'\n" |
" -readonly open the database read-only\n" |
" -separator SEP set output column separator. Default: '|'\n" |
#ifdef SQLITE_ENABLE_SORTER_REFERENCES |
" -sorterref SIZE sorter references threshold size\n" |
#endif |
" -stats print memory stats before each finalize\n" |
" -table set output mode to 'table'\n" |
" -tabs set output mode to 'tabs'\n" |
" -version show SQLite version\n" |
" -vfs NAME use NAME as the default VFS\n" |
#ifdef SQLITE_ENABLE_VFSTRACE |
" -vfstrace enable tracing of all VFS calls\n" |
#endif |
#ifdef SQLITE_HAVE_ZLIB |
" -zip open the file as a ZIP Archive\n" |
#endif |
; |
static void usage(int showDetail){ |
utf8_printf(stderr, |
"Usage: %s [OPTIONS] FILENAME [SQL]\n" |
"FILENAME is the name of an SQLite database. A new database is created\n" |
"if the file does not previously exist.\n", Argv0); |
if( showDetail ){ |
utf8_printf(stderr, "OPTIONS include:\n%s", zOptions); |
}else{ |
raw_printf(stderr, "Use the -help option for additional information\n"); |
} |
exit(1); |
} |
|
/* |
** Internal check: Verify that the SQLite is uninitialized. Print a |
** error message if it is initialized. |
*/ |
static void verify_uninitialized(void){ |
if( sqlite3_config(-1)==SQLITE_MISUSE ){ |
utf8_printf(stdout, "WARNING: attempt to configure SQLite after" |
" initialization.\n"); |
} |
} |
|
/* |
** Initialize the state information in data |
*/ |
static void main_init(ShellState *data) { |
memset(data, 0, sizeof(*data)); |
data->normalMode = data->cMode = data->mode = MODE_List; |
data->autoExplain = 1; |
memcpy(data->colSeparator,SEP_Column, 2); |
memcpy(data->rowSeparator,SEP_Row, 2); |
data->showHeader = 0; |
data->shellFlgs = SHFLG_Lookaside; |
verify_uninitialized(); |
sqlite3_config(SQLITE_CONFIG_URI, 1); |
sqlite3_config(SQLITE_CONFIG_LOG, shellLog, data); |
sqlite3_config(SQLITE_CONFIG_MULTITHREAD); |
sqlite3_snprintf(sizeof(mainPrompt), mainPrompt,"sqlite> "); |
sqlite3_snprintf(sizeof(continuePrompt), continuePrompt," ...> "); |
} |
|
/* |
** Output text to the console in a font that attracts extra attention. |
*/ |
#ifdef _WIN32 |
static void printBold(const char *zText){ |
#if !SQLITE_OS_WINRT |
HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE); |
CONSOLE_SCREEN_BUFFER_INFO defaultScreenInfo; |
GetConsoleScreenBufferInfo(out, &defaultScreenInfo); |
SetConsoleTextAttribute(out, |
FOREGROUND_RED|FOREGROUND_INTENSITY |
); |
#endif |
printf("%s", zText); |
#if !SQLITE_OS_WINRT |
SetConsoleTextAttribute(out, defaultScreenInfo.wAttributes); |
#endif |
} |
#else |
static void printBold(const char *zText){ |
printf("\033[1m%s\033[0m", zText); |
} |
#endif |
|
/* |
** Get the argument to an --option. Throw an error and die if no argument |
** is available. |
*/ |
static char *cmdline_option_value(int argc, char **argv, int i){ |
if( i==argc ){ |
utf8_printf(stderr, "%s: Error: missing argument to %s\n", |
argv[0], argv[argc-1]); |
exit(1); |
} |
return argv[i]; |
} |
|
#ifndef SQLITE_SHELL_IS_UTF8 |
# if (defined(_WIN32) || defined(WIN32)) \ |
&& (defined(_MSC_VER) || (defined(UNICODE) && defined(__GNUC__))) |
# define SQLITE_SHELL_IS_UTF8 (0) |
# else |
# define SQLITE_SHELL_IS_UTF8 (1) |
# endif |
#endif |
|
#if SQLITE_SHELL_IS_UTF8 |
int SQLITE_CDECL main(int argc, char **argv){ |
#else |
int SQLITE_CDECL wmain(int argc, wchar_t **wargv){ |
char **argv; |
#endif |
char *zErrMsg = 0; |
ShellState data; |
const char *zInitFile = 0; |
int i; |
int rc = 0; |
int warnInmemoryDb = 0; |
int readStdin = 1; |
int nCmd = 0; |
char **azCmd = 0; |
const char *zVfs = 0; /* Value of -vfs command-line option */ |
#if !SQLITE_SHELL_IS_UTF8 |
char **argvToFree = 0; |
int argcToFree = 0; |
#endif |
|
setBinaryMode(stdin, 0); |
setvbuf(stderr, 0, _IONBF, 0); /* Make sure stderr is unbuffered */ |
stdin_is_interactive = isatty(0); |
stdout_is_console = isatty(1); |
|
#ifdef SQLITE_DEBUG |
registerOomSimulator(); |
#endif |
|
#if !defined(_WIN32_WCE) && ! defined(_KOLIBRI) |
if( getenv("SQLITE_DEBUG_BREAK") ){ |
if( isatty(0) && isatty(2) ){ |
fprintf(stderr, |
"attach debugger to process %d and press any key to continue.\n", |
GETPID()); |
fgetc(stdin); |
}else{ |
#if defined(_WIN32) || defined(WIN32) |
#if SQLITE_OS_WINRT |
__debugbreak(); |
#else |
DebugBreak(); |
#endif |
#elif defined(SIGTRAP) |
raise(SIGTRAP); |
#endif |
} |
} |
#endif |
|
#if USE_SYSTEM_SQLITE+0!=1 |
if( strncmp(sqlite3_sourceid(),SQLITE_SOURCE_ID,60)!=0 ){ |
utf8_printf(stderr, "SQLite header and source version mismatch\n%s\n%s\n", |
sqlite3_sourceid(), SQLITE_SOURCE_ID); |
exit(1); |
} |
#endif |
main_init(&data); |
|
/* On Windows, we must translate command-line arguments into UTF-8. |
** The SQLite memory allocator subsystem has to be enabled in order to |
** do this. But we want to run an sqlite3_shutdown() afterwards so that |
** subsequent sqlite3_config() calls will work. So copy all results into |
** memory that does not come from the SQLite memory allocator. |
*/ |
#if !SQLITE_SHELL_IS_UTF8 |
sqlite3_initialize(); |
argvToFree = malloc(sizeof(argv[0])*argc*2); |
argcToFree = argc; |
argv = argvToFree + argc; |
if( argv==0 ) shell_out_of_memory(); |
for(i=0; i<argc; i++){ |
char *z = sqlite3_win32_unicode_to_utf8(wargv[i]); |
int n; |
if( z==0 ) shell_out_of_memory(); |
n = (int)strlen(z); |
argv[i] = malloc( n+1 ); |
if( argv[i]==0 ) shell_out_of_memory(); |
memcpy(argv[i], z, n+1); |
argvToFree[i] = argv[i]; |
sqlite3_free(z); |
} |
sqlite3_shutdown(); |
#endif |
|
assert( argc>=1 && argv && argv[0] ); |
Argv0 = argv[0]; |
|
/* Make sure we have a valid signal handler early, before anything |
** else is done. |
*/ |
#ifdef SIGINT |
signal(SIGINT, interrupt_handler); |
#elif (defined(_WIN32) || defined(WIN32)) && !defined(_WIN32_WCE) |
SetConsoleCtrlHandler(ConsoleCtrlHandler, TRUE); |
#endif |
|
#ifdef SQLITE_SHELL_DBNAME_PROC |
{ |
/* If the SQLITE_SHELL_DBNAME_PROC macro is defined, then it is the name |
** of a C-function that will provide the name of the database file. Use |
** this compile-time option to embed this shell program in larger |
** applications. */ |
extern void SQLITE_SHELL_DBNAME_PROC(const char**); |
SQLITE_SHELL_DBNAME_PROC(&data.zDbFilename); |
warnInmemoryDb = 0; |
} |
#endif |
|
/* Do an initial pass through the command-line argument to locate |
** the name of the database file, the name of the initialization file, |
** the size of the alternative malloc heap, |
** and the first command to execute. |
*/ |
verify_uninitialized(); |
for(i=1; i<argc; i++){ |
char *z; |
z = argv[i]; |
if( z[0]!='-' ){ |
if( data.zDbFilename==0 ){ |
data.zDbFilename = z; |
}else{ |
/* Excesss arguments are interpreted as SQL (or dot-commands) and |
** mean that nothing is read from stdin */ |
readStdin = 0; |
nCmd++; |
azCmd = realloc(azCmd, sizeof(azCmd[0])*nCmd); |
if( azCmd==0 ) shell_out_of_memory(); |
azCmd[nCmd-1] = z; |
} |
} |
if( z[1]=='-' ) z++; |
if( strcmp(z,"-separator")==0 |
|| strcmp(z,"-nullvalue")==0 |
|| strcmp(z,"-newline")==0 |
|| strcmp(z,"-cmd")==0 |
){ |
(void)cmdline_option_value(argc, argv, ++i); |
}else if( strcmp(z,"-init")==0 ){ |
zInitFile = cmdline_option_value(argc, argv, ++i); |
}else if( strcmp(z,"-batch")==0 ){ |
/* Need to check for batch mode here to so we can avoid printing |
** informational messages (like from process_sqliterc) before |
** we do the actual processing of arguments later in a second pass. |
*/ |
stdin_is_interactive = 0; |
}else if( strcmp(z,"-heap")==0 ){ |
#if defined(SQLITE_ENABLE_MEMSYS3) || defined(SQLITE_ENABLE_MEMSYS5) |
const char *zSize; |
sqlite3_int64 szHeap; |
|
zSize = cmdline_option_value(argc, argv, ++i); |
szHeap = integerValue(zSize); |
if( szHeap>0x7fff0000 ) szHeap = 0x7fff0000; |
sqlite3_config(SQLITE_CONFIG_HEAP, malloc((int)szHeap), (int)szHeap, 64); |
#else |
(void)cmdline_option_value(argc, argv, ++i); |
#endif |
}else if( strcmp(z,"-pagecache")==0 ){ |
sqlite3_int64 n, sz; |
sz = integerValue(cmdline_option_value(argc,argv,++i)); |
if( sz>70000 ) sz = 70000; |
if( sz<0 ) sz = 0; |
n = integerValue(cmdline_option_value(argc,argv,++i)); |
if( sz>0 && n>0 && 0xffffffffffffLL/sz<n ){ |
n = 0xffffffffffffLL/sz; |
} |
sqlite3_config(SQLITE_CONFIG_PAGECACHE, |
(n>0 && sz>0) ? malloc(n*sz) : 0, sz, n); |
data.shellFlgs |= SHFLG_Pagecache; |
}else if( strcmp(z,"-lookaside")==0 ){ |
int n, sz; |
sz = (int)integerValue(cmdline_option_value(argc,argv,++i)); |
if( sz<0 ) sz = 0; |
n = (int)integerValue(cmdline_option_value(argc,argv,++i)); |
if( n<0 ) n = 0; |
sqlite3_config(SQLITE_CONFIG_LOOKASIDE, sz, n); |
if( sz*n==0 ) data.shellFlgs &= ~SHFLG_Lookaside; |
#ifdef SQLITE_ENABLE_VFSTRACE |
}else if( strcmp(z,"-vfstrace")==0 ){ |
extern int vfstrace_register( |
const char *zTraceName, |
const char *zOldVfsName, |
int (*xOut)(const char*,void*), |
void *pOutArg, |
int makeDefault |
); |
vfstrace_register("trace",0,(int(*)(const char*,void*))fputs,stderr,1); |
#endif |
#ifdef SQLITE_ENABLE_MULTIPLEX |
}else if( strcmp(z,"-multiplex")==0 ){ |
extern int sqlite3_multiple_initialize(const char*,int); |
sqlite3_multiplex_initialize(0, 1); |
#endif |
}else if( strcmp(z,"-mmap")==0 ){ |
sqlite3_int64 sz = integerValue(cmdline_option_value(argc,argv,++i)); |
sqlite3_config(SQLITE_CONFIG_MMAP_SIZE, sz, sz); |
#ifdef SQLITE_ENABLE_SORTER_REFERENCES |
}else if( strcmp(z,"-sorterref")==0 ){ |
sqlite3_int64 sz = integerValue(cmdline_option_value(argc,argv,++i)); |
sqlite3_config(SQLITE_CONFIG_SORTERREF_SIZE, (int)sz); |
#endif |
}else if( strcmp(z,"-vfs")==0 ){ |
zVfs = cmdline_option_value(argc, argv, ++i); |
#ifdef SQLITE_HAVE_ZLIB |
}else if( strcmp(z,"-zip")==0 ){ |
data.openMode = SHELL_OPEN_ZIPFILE; |
#endif |
}else if( strcmp(z,"-append")==0 ){ |
data.openMode = SHELL_OPEN_APPENDVFS; |
#ifdef SQLITE_ENABLE_DESERIALIZE |
}else if( strcmp(z,"-deserialize")==0 ){ |
data.openMode = SHELL_OPEN_DESERIALIZE; |
}else if( strcmp(z,"-maxsize")==0 && i+1<argc ){ |
data.szMax = integerValue(argv[++i]); |
#endif |
}else if( strcmp(z,"-readonly")==0 ){ |
data.openMode = SHELL_OPEN_READONLY; |
}else if( strcmp(z,"-nofollow")==0 ){ |
data.openFlags = SQLITE_OPEN_NOFOLLOW; |
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_HAVE_ZLIB) |
}else if( strncmp(z, "-A",2)==0 ){ |
/* All remaining command-line arguments are passed to the ".archive" |
** command, so ignore them */ |
break; |
#endif |
}else if( strcmp(z, "-memtrace")==0 ){ |
sqlite3MemTraceActivate(stderr); |
}else if( strcmp(z,"-bail")==0 ){ |
bail_on_error = 1; |
} |
} |
verify_uninitialized(); |
|
|
#ifdef SQLITE_SHELL_INIT_PROC |
{ |
/* If the SQLITE_SHELL_INIT_PROC macro is defined, then it is the name |
** of a C-function that will perform initialization actions on SQLite that |
** occur just before or after sqlite3_initialize(). Use this compile-time |
** option to embed this shell program in larger applications. */ |
extern void SQLITE_SHELL_INIT_PROC(void); |
SQLITE_SHELL_INIT_PROC(); |
} |
#else |
/* All the sqlite3_config() calls have now been made. So it is safe |
** to call sqlite3_initialize() and process any command line -vfs option. */ |
sqlite3_initialize(); |
#endif |
|
if( zVfs ){ |
sqlite3_vfs *pVfs = sqlite3_vfs_find(zVfs); |
if( pVfs ){ |
sqlite3_vfs_register(pVfs, 1); |
}else{ |
utf8_printf(stderr, "no such VFS: \"%s\"\n", argv[i]); |
exit(1); |
} |
} |
|
if( data.zDbFilename==0 ){ |
#ifndef SQLITE_OMIT_MEMORYDB |
data.zDbFilename = ":memory:"; |
warnInmemoryDb = argc==1; |
#else |
utf8_printf(stderr,"%s: Error: no database filename specified\n", Argv0); |
return 1; |
#endif |
} |
data.out = stdout; |
sqlite3_appendvfs_init(0,0,0); |
|
/* Go ahead and open the database file if it already exists. If the |
** file does not exist, delay opening it. This prevents empty database |
** files from being created if a user mistypes the database name argument |
** to the sqlite command-line tool. |
*/ |
if( access(data.zDbFilename, 0)==0 ){ |
open_db(&data, 0); |
} |
|
/* Process the initialization file if there is one. If no -init option |
** is given on the command line, look for a file named ~/.sqliterc and |
** try to process it. |
*/ |
process_sqliterc(&data,zInitFile); |
|
/* Make a second pass through the command-line argument and set |
** options. This second pass is delayed until after the initialization |
** file is processed so that the command-line arguments will override |
** settings in the initialization file. |
*/ |
for(i=1; i<argc; i++){ |
char *z = argv[i]; |
if( z[0]!='-' ) continue; |
if( z[1]=='-' ){ z++; } |
if( strcmp(z,"-init")==0 ){ |
i++; |
}else if( strcmp(z,"-html")==0 ){ |
data.mode = MODE_Html; |
}else if( strcmp(z,"-list")==0 ){ |
data.mode = MODE_List; |
}else if( strcmp(z,"-quote")==0 ){ |
data.mode = MODE_Quote; |
sqlite3_snprintf(sizeof(data.colSeparator), data.colSeparator, SEP_Comma); |
sqlite3_snprintf(sizeof(data.rowSeparator), data.rowSeparator, SEP_Row); |
}else if( strcmp(z,"-line")==0 ){ |
data.mode = MODE_Line; |
}else if( strcmp(z,"-column")==0 ){ |
data.mode = MODE_Column; |
}else if( strcmp(z,"-json")==0 ){ |
data.mode = MODE_Json; |
}else if( strcmp(z,"-markdown")==0 ){ |
data.mode = MODE_Markdown; |
}else if( strcmp(z,"-table")==0 ){ |
data.mode = MODE_Table; |
}else if( strcmp(z,"-box")==0 ){ |
data.mode = MODE_Box; |
}else if( strcmp(z,"-csv")==0 ){ |
data.mode = MODE_Csv; |
memcpy(data.colSeparator,",",2); |
#ifdef SQLITE_HAVE_ZLIB |
}else if( strcmp(z,"-zip")==0 ){ |
data.openMode = SHELL_OPEN_ZIPFILE; |
#endif |
}else if( strcmp(z,"-append")==0 ){ |
data.openMode = SHELL_OPEN_APPENDVFS; |
#ifdef SQLITE_ENABLE_DESERIALIZE |
}else if( strcmp(z,"-deserialize")==0 ){ |
data.openMode = SHELL_OPEN_DESERIALIZE; |
}else if( strcmp(z,"-maxsize")==0 && i+1<argc ){ |
data.szMax = integerValue(argv[++i]); |
#endif |
}else if( strcmp(z,"-readonly")==0 ){ |
data.openMode = SHELL_OPEN_READONLY; |
}else if( strcmp(z,"-nofollow")==0 ){ |
data.openFlags |= SQLITE_OPEN_NOFOLLOW; |
}else if( strcmp(z,"-ascii")==0 ){ |
data.mode = MODE_Ascii; |
sqlite3_snprintf(sizeof(data.colSeparator), data.colSeparator, SEP_Unit); |
sqlite3_snprintf(sizeof(data.rowSeparator), data.rowSeparator, SEP_Record); |
}else if( strcmp(z,"-tabs")==0 ){ |
data.mode = MODE_List; |
sqlite3_snprintf(sizeof(data.colSeparator), data.colSeparator, SEP_Tab); |
sqlite3_snprintf(sizeof(data.rowSeparator), data.rowSeparator, SEP_Row); |
}else if( strcmp(z,"-separator")==0 ){ |
sqlite3_snprintf(sizeof(data.colSeparator), data.colSeparator, |
"%s",cmdline_option_value(argc,argv,++i)); |
}else if( strcmp(z,"-newline")==0 ){ |
sqlite3_snprintf(sizeof(data.rowSeparator), data.rowSeparator, |
"%s",cmdline_option_value(argc,argv,++i)); |
}else if( strcmp(z,"-nullvalue")==0 ){ |
sqlite3_snprintf(sizeof(data.nullValue), data.nullValue, |
"%s",cmdline_option_value(argc,argv,++i)); |
}else if( strcmp(z,"-header")==0 ){ |
data.showHeader = 1; |
}else if( strcmp(z,"-noheader")==0 ){ |
data.showHeader = 0; |
}else if( strcmp(z,"-echo")==0 ){ |
ShellSetFlag(&data, SHFLG_Echo); |
}else if( strcmp(z,"-eqp")==0 ){ |
data.autoEQP = AUTOEQP_on; |
}else if( strcmp(z,"-eqpfull")==0 ){ |
data.autoEQP = AUTOEQP_full; |
}else if( strcmp(z,"-stats")==0 ){ |
data.statsOn = 1; |
}else if( strcmp(z,"-scanstats")==0 ){ |
data.scanstatsOn = 1; |
}else if( strcmp(z,"-backslash")==0 ){ |
/* Undocumented command-line option: -backslash |
** Causes C-style backslash escapes to be evaluated in SQL statements |
** prior to sending the SQL into SQLite. Useful for injecting |
** crazy bytes in the middle of SQL statements for testing and debugging. |
*/ |
ShellSetFlag(&data, SHFLG_Backslash); |
}else if( strcmp(z,"-bail")==0 ){ |
/* No-op. The bail_on_error flag should already be set. */ |
}else if( strcmp(z,"-version")==0 ){ |
printf("%s %s\n", sqlite3_libversion(), sqlite3_sourceid()); |
return 0; |
}else if( strcmp(z,"-interactive")==0 ){ |
stdin_is_interactive = 1; |
}else if( strcmp(z,"-batch")==0 ){ |
stdin_is_interactive = 0; |
}else if( strcmp(z,"-heap")==0 ){ |
i++; |
}else if( strcmp(z,"-pagecache")==0 ){ |
i+=2; |
}else if( strcmp(z,"-lookaside")==0 ){ |
i+=2; |
}else if( strcmp(z,"-mmap")==0 ){ |
i++; |
}else if( strcmp(z,"-memtrace")==0 ){ |
i++; |
#ifdef SQLITE_ENABLE_SORTER_REFERENCES |
}else if( strcmp(z,"-sorterref")==0 ){ |
i++; |
#endif |
}else if( strcmp(z,"-vfs")==0 ){ |
i++; |
#ifdef SQLITE_ENABLE_VFSTRACE |
}else if( strcmp(z,"-vfstrace")==0 ){ |
i++; |
#endif |
#ifdef SQLITE_ENABLE_MULTIPLEX |
}else if( strcmp(z,"-multiplex")==0 ){ |
i++; |
#endif |
}else if( strcmp(z,"-help")==0 ){ |
usage(1); |
}else if( strcmp(z,"-cmd")==0 ){ |
/* Run commands that follow -cmd first and separately from commands |
** that simply appear on the command-line. This seems goofy. It would |
** be better if all commands ran in the order that they appear. But |
** we retain the goofy behavior for historical compatibility. */ |
if( i==argc-1 ) break; |
z = cmdline_option_value(argc,argv,++i); |
if( z[0]=='.' ){ |
rc = do_meta_command(z, &data); |
if( rc && bail_on_error ) return rc==2 ? 0 : rc; |
}else{ |
open_db(&data, 0); |
rc = shell_exec(&data, z, &zErrMsg); |
if( zErrMsg!=0 ){ |
utf8_printf(stderr,"Error: %s\n", zErrMsg); |
if( bail_on_error ) return rc!=0 ? rc : 1; |
}else if( rc!=0 ){ |
utf8_printf(stderr,"Error: unable to process SQL \"%s\"\n", z); |
if( bail_on_error ) return rc; |
} |
} |
#if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_HAVE_ZLIB) |
}else if( strncmp(z, "-A", 2)==0 ){ |
if( nCmd>0 ){ |
utf8_printf(stderr, "Error: cannot mix regular SQL or dot-commands" |
" with \"%s\"\n", z); |
return 1; |
} |
open_db(&data, OPEN_DB_ZIPFILE); |
if( z[2] ){ |
argv[i] = &z[2]; |
arDotCommand(&data, 1, argv+(i-1), argc-(i-1)); |
}else{ |
arDotCommand(&data, 1, argv+i, argc-i); |
} |
readStdin = 0; |
break; |
#endif |
}else{ |
utf8_printf(stderr,"%s: Error: unknown option: %s\n", Argv0, z); |
raw_printf(stderr,"Use -help for a list of options.\n"); |
return 1; |
} |
data.cMode = data.mode; |
} |
|
if( !readStdin ){ |
/* Run all arguments that do not begin with '-' as if they were separate |
** command-line inputs, except for the argToSkip argument which contains |
** the database filename. |
*/ |
for(i=0; i<nCmd; i++){ |
if( azCmd[i][0]=='.' ){ |
rc = do_meta_command(azCmd[i], &data); |
if( rc ){ |
free(azCmd); |
return rc==2 ? 0 : rc; |
} |
}else{ |
open_db(&data, 0); |
rc = shell_exec(&data, azCmd[i], &zErrMsg); |
if( zErrMsg || rc ){ |
if( zErrMsg!=0 ){ |
utf8_printf(stderr,"Error: %s\n", zErrMsg); |
}else{ |
utf8_printf(stderr,"Error: unable to process SQL: %s\n", azCmd[i]); |
} |
sqlite3_free(zErrMsg); |
free(azCmd); |
return rc!=0 ? rc : 1; |
} |
} |
} |
}else{ |
/* Run commands received from standard input |
*/ |
if( stdin_is_interactive ){ |
char *zHome; |
char *zHistory; |
int nHistory; |
printf( |
"SQLite version %s %.19s\n" /*extra-version-info*/ |
"Enter \".help\" for usage hints.\n", |
sqlite3_libversion(), sqlite3_sourceid() |
); |
if( warnInmemoryDb ){ |
printf("Connected to a "); |
printBold("transient in-memory database"); |
printf(".\nUse \".open FILENAME\" to reopen on a " |
"persistent database.\n"); |
} |
zHistory = getenv("SQLITE_HISTORY"); |
if( zHistory ){ |
zHistory = strdup(zHistory); |
}else if( (zHome = find_home_dir(0))!=0 ){ |
nHistory = strlen30(zHome) + 20; |
if( (zHistory = malloc(nHistory))!=0 ){ |
sqlite3_snprintf(nHistory, zHistory,"%s/.sqlite_history", zHome); |
} |
} |
if( zHistory ){ shell_read_history(zHistory); } |
#if HAVE_READLINE || HAVE_EDITLINE |
rl_attempted_completion_function = readline_completion; |
#elif HAVE_LINENOISE |
linenoiseSetCompletionCallback(linenoise_completion); |
#endif |
data.in = 0; |
rc = process_input(&data); |
if( zHistory ){ |
shell_stifle_history(2000); |
shell_write_history(zHistory); |
free(zHistory); |
} |
}else{ |
data.in = stdin; |
rc = process_input(&data); |
} |
} |
free(azCmd); |
set_table_name(&data, 0); |
if( data.db ){ |
session_close_all(&data); |
close_db(data.db); |
} |
sqlite3_free(data.zFreeOnClose); |
find_home_dir(1); |
output_reset(&data); |
data.doXdgOpen = 0; |
clearTempFile(&data); |
#if !SQLITE_SHELL_IS_UTF8 |
for(i=0; i<argcToFree; i++) free(argvToFree[i]); |
free(argvToFree); |
#endif |
free(data.colWidth); |
/* Clear the global data structure so that valgrind will detect memory |
** leaks */ |
memset(&data, 0, sizeof(data)); |
return rc; |
} |