0,0 → 1,2190 |
/* |
* Copyright (c) 1990 The Regents of the University of California. |
* All rights reserved. |
* |
* This code is derived from software contributed to Berkeley by |
* Chris Torek. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* 1. Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* 2. Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* 3. All advertising materials mentioning features or use of this software |
* must display the following acknowledgement: |
* This product includes software developed by the University of |
* California, Berkeley and its contributors. |
* 4. Neither the name of the University nor the names of its contributors |
* may be used to endorse or promote products derived from this software |
* without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* SUCH DAMAGE. |
*/ |
|
/* |
FUNCTION |
<<vfprintf>>, <<vprintf>>, <<vsprintf>>, <<vsnprintf>>, <<vasprintf>>, <<vasnprintf>>---format argument list |
|
INDEX |
vfprintf |
INDEX |
_vfprintf_r |
INDEX |
vprintf |
INDEX |
_vprintf_r |
INDEX |
vsprintf |
INDEX |
_vsprintf_r |
INDEX |
vsnprintf |
INDEX |
_vsnprintf_r |
INDEX |
vasprintf |
INDEX |
_vasprintf_r |
INDEX |
vasnprintf |
INDEX |
_vasnprintf_r |
|
ANSI_SYNOPSIS |
#include <stdio.h> |
#include <stdarg.h> |
int vprintf(const char *<[fmt]>, va_list <[list]>); |
int vfprintf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); |
int vsprintf(char *<[str]>, const char *<[fmt]>, va_list <[list]>); |
int vsnprintf(char *<[str]>, size_t <[size]>, const char *<[fmt]>, |
va_list <[list]>); |
int vasprintf(char **<[strp]>, const char *<[fmt]>, va_list <[list]>); |
char *vasnprintf(char *<[str]>, size_t *<[size]>, const char *<[fmt]>, |
va_list <[list]>); |
|
int _vprintf_r(struct _reent *<[reent]>, const char *<[fmt]>, |
va_list <[list]>); |
int _vfprintf_r(struct _reent *<[reent]>, FILE *<[fp]>, |
const char *<[fmt]>, va_list <[list]>); |
int _vsprintf_r(struct _reent *<[reent]>, char *<[str]>, |
const char *<[fmt]>, va_list <[list]>); |
int _vasprintf_r(struct _reent *<[reent]>, char **<[str]>, |
const char *<[fmt]>, va_list <[list]>); |
int _vsnprintf_r(struct _reent *<[reent]>, char *<[str]>, |
size_t <[size]>, const char *<[fmt]>, va_list <[list]>); |
char *_vasnprintf_r(struct _reent *<[reent]>, char *<[str]>, |
size_t *<[size]>, const char *<[fmt]>, va_list <[list]>); |
|
DESCRIPTION |
<<vprintf>>, <<vfprintf>>, <<vasprintf>>, <<vsprintf>>, <<vsnprintf>>, |
and <<vasnprintf>> are (respectively) variants of <<printf>>, |
<<fprintf>>, <<asprintf>>, <<sprintf>>, <<snprintf>>, and |
<<asnprintf>>. They differ only in allowing their caller to pass the |
variable argument list as a <<va_list>> object (initialized by |
<<va_start>>) rather than directly accepting a variable number of |
arguments. The caller is responsible for calling <<va_end>>. |
|
<<_vprintf_r>>, <<_vfprintf_r>>, <<_vasprintf_r>>, <<_vsprintf_r>>, |
<<_vsnprintf_r>>, and <<_vasnprintf_r>> are reentrant versions of the |
above. |
|
RETURNS |
The return values are consistent with the corresponding functions. |
|
PORTABILITY |
ANSI C requires <<vprintf>>, <<vfprintf>>, <<vsprintf>>, and |
<<vsnprintf>>. The remaining functions are newlib extensions. |
|
Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, |
<<lseek>>, <<read>>, <<sbrk>>, <<write>>. |
*/ |
|
#if defined(LIBC_SCCS) && !defined(lint) |
/*static char *sccsid = "from: @(#)vfprintf.c 5.50 (Berkeley) 12/16/92";*/ |
static char *rcsid = "$Id: vfprintf.c,v 1.43 2002/08/13 02:40:06 fitzsim Exp $"; |
#endif /* LIBC_SCCS and not lint */ |
|
/* |
* Actual printf innards. |
* |
* This code is large and complicated... |
*/ |
#include <newlib.h> |
|
#ifdef INTEGER_ONLY |
# define VFPRINTF vfiprintf |
# ifdef STRING_ONLY |
# define _VFPRINTF_R _svfiprintf_r |
# else |
# define _VFPRINTF_R _vfiprintf_r |
# endif |
#else |
# define VFPRINTF vfprintf |
# ifdef STRING_ONLY |
# define _VFPRINTF_R _svfprintf_r |
# else |
# define _VFPRINTF_R _vfprintf_r |
# endif |
# ifndef NO_FLOATING_POINT |
# define FLOATING_POINT |
# endif |
#endif |
|
#define _NO_POS_ARGS |
#ifdef _WANT_IO_POS_ARGS |
# undef _NO_POS_ARGS |
#endif |
|
#include <_ansi.h> |
#include <reent.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <string.h> |
#include <limits.h> |
#include <stdint.h> |
#include <wchar.h> |
#include <sys/lock.h> |
#include <stdarg.h> |
#include "local.h" |
#include "../stdlib/local.h" |
#include "fvwrite.h" |
#include "vfieeefp.h" |
|
/* Currently a test is made to see if long double processing is warranted. |
This could be changed in the future should the _ldtoa_r code be |
preferred over _dtoa_r. */ |
#define _NO_LONGDBL |
#if defined _WANT_IO_LONG_DOUBLE && (LDBL_MANT_DIG > DBL_MANT_DIG) |
#undef _NO_LONGDBL |
#endif |
|
#define _NO_LONGLONG |
#if defined _WANT_IO_LONG_LONG \ |
&& (defined __GNUC__ || __STDC_VERSION__ >= 199901L) |
# undef _NO_LONGLONG |
#endif |
|
#ifdef STRING_ONLY |
#define __SPRINT __ssprint_r |
#else |
#define __SPRINT __sprint_r |
#endif |
|
/* The __sprint_r/__ssprint_r functions are shared between all versions of |
vfprintf and vfwprintf. They must only be defined once, which we do in |
the INTEGER_ONLY versions here. */ |
#ifdef STRING_ONLY |
#ifdef INTEGER_ONLY |
int |
_DEFUN(__ssprint_r, (ptr, fp, uio), |
struct _reent *ptr _AND |
FILE *fp _AND |
register struct __suio *uio) |
{ |
register size_t len; |
register int w; |
register struct __siov *iov; |
register _CONST char *p = NULL; |
|
iov = uio->uio_iov; |
len = 0; |
|
if (uio->uio_resid == 0) { |
uio->uio_iovcnt = 0; |
return (0); |
} |
|
do { |
while (len == 0) { |
p = iov->iov_base; |
len = iov->iov_len; |
iov++; |
} |
w = fp->_w; |
if (len >= w && fp->_flags & (__SMBF | __SOPT)) { |
/* must be asprintf family */ |
unsigned char *str; |
int curpos = (fp->_p - fp->_bf._base); |
/* Choose a geometric growth factor to avoid |
* quadratic realloc behavior, but use a rate less |
* than (1+sqrt(5))/2 to accomodate malloc |
* overhead. asprintf EXPECTS us to overallocate, so |
* that it can add a trailing \0 without |
* reallocating. The new allocation should thus be |
* max(prev_size*1.5, curpos+len+1). */ |
int newsize = fp->_bf._size * 3 / 2; |
if (newsize < curpos + len + 1) |
newsize = curpos + len + 1; |
if (fp->_flags & __SOPT) |
{ |
/* asnprintf leaves original buffer alone. */ |
str = (unsigned char *)_malloc_r (ptr, newsize); |
if (!str) |
{ |
ptr->_errno = ENOMEM; |
goto err; |
} |
memcpy (str, fp->_bf._base, curpos); |
fp->_flags = (fp->_flags & ~__SOPT) | __SMBF; |
} |
else |
{ |
str = (unsigned char *)_realloc_r (ptr, fp->_bf._base, |
newsize); |
if (!str) { |
/* Free unneeded buffer. */ |
_free_r (ptr, fp->_bf._base); |
/* Ensure correct errno, even if free |
* changed it. */ |
ptr->_errno = ENOMEM; |
goto err; |
} |
} |
fp->_bf._base = str; |
fp->_p = str + curpos; |
fp->_bf._size = newsize; |
w = len; |
fp->_w = newsize - curpos; |
} |
if (len < w) |
w = len; |
(void)memmove ((_PTR) fp->_p, (_PTR) p, (size_t) (w)); |
fp->_w -= w; |
fp->_p += w; |
w = len; /* pretend we copied all */ |
p += w; |
len -= w; |
} while ((uio->uio_resid -= w) != 0); |
|
uio->uio_resid = 0; |
uio->uio_iovcnt = 0; |
return 0; |
|
err: |
fp->_flags |= __SERR; |
uio->uio_resid = 0; |
uio->uio_iovcnt = 0; |
return EOF; |
} |
#else /* !INTEGER_ONLY */ |
int __ssprint_r (struct _reent *, FILE *, register struct __suio *); |
#endif /* !INTEGER_ONLY */ |
|
#else /* !STRING_ONLY */ |
#ifdef INTEGER_ONLY |
/* |
* Flush out all the vectors defined by the given uio, |
* then reset it so that it can be reused. |
*/ |
int |
_DEFUN(__sprint_r, (ptr, fp, uio), |
struct _reent *ptr _AND |
FILE *fp _AND |
register struct __suio *uio) |
{ |
register int err = 0; |
|
if (uio->uio_resid == 0) { |
uio->uio_iovcnt = 0; |
return (0); |
} |
if (fp->_flags2 & __SWID) { |
struct __siov *iov; |
wchar_t *p; |
int i, len; |
|
iov = uio->uio_iov; |
for (; uio->uio_resid != 0; |
uio->uio_resid -= len * sizeof (wchar_t), iov++) { |
p = (wchar_t *) iov->iov_base; |
len = iov->iov_len / sizeof (wchar_t); |
for (i = 0; i < len; i++) { |
if (_fputwc_r (ptr, p[i], fp) == WEOF) { |
err = -1; |
goto out; |
} |
} |
} |
} else |
err = __sfvwrite_r(ptr, fp, uio); |
out: |
uio->uio_resid = 0; |
uio->uio_iovcnt = 0; |
return (err); |
} |
#else /* !INTEGER_ONLY */ |
int __sprint_r (struct _reent *, FILE *, register struct __suio *); |
#endif /* !INTEGER_ONLY */ |
|
/* |
* Helper function for `fprintf to unbuffered unix file': creates a |
* temporary buffer. We only work on write-only files; this avoids |
* worries about ungetc buffers and so forth. |
*/ |
static int |
_DEFUN(__sbprintf, (rptr, fp, fmt, ap), |
struct _reent *rptr _AND |
register FILE *fp _AND |
_CONST char *fmt _AND |
va_list ap) |
{ |
int ret; |
FILE fake; |
unsigned char buf[BUFSIZ]; |
|
/* copy the important variables */ |
fake._flags = fp->_flags & ~__SNBF; |
fake._flags2 = fp->_flags2; |
fake._file = fp->_file; |
fake._cookie = fp->_cookie; |
fake._write = fp->_write; |
|
/* set up the buffer */ |
fake._bf._base = fake._p = buf; |
fake._bf._size = fake._w = sizeof (buf); |
fake._lbfsize = 0; /* not actually used, but Just In Case */ |
#ifndef __SINGLE_THREAD__ |
__lock_init_recursive (fake._lock); |
#endif |
|
/* do the work, then copy any error status */ |
ret = _VFPRINTF_R (rptr, &fake, fmt, ap); |
if (ret >= 0 && _fflush_r (rptr, &fake)) |
ret = EOF; |
if (fake._flags & __SERR) |
fp->_flags |= __SERR; |
|
#ifndef __SINGLE_THREAD__ |
__lock_close_recursive (fake._lock); |
#endif |
return (ret); |
} |
#endif /* !STRING_ONLY */ |
|
|
#if defined (FLOATING_POINT) || defined (_WANT_IO_C99_FORMATS) |
# include <locale.h> |
#endif |
#ifdef FLOATING_POINT |
# include <math.h> |
|
/* For %La, an exponent of 15 bits occupies the exponent character, a |
sign, and up to 5 digits. */ |
# define MAXEXPLEN 7 |
# define DEFPREC 6 |
|
# ifdef _NO_LONGDBL |
|
extern char *_dtoa_r _PARAMS((struct _reent *, double, int, |
int, int *, int *, char **)); |
|
# define _PRINTF_FLOAT_TYPE double |
# define _DTOA_R _dtoa_r |
# define FREXP frexp |
|
# else /* !_NO_LONGDBL */ |
|
extern char *_ldtoa_r _PARAMS((struct _reent *, _LONG_DOUBLE, int, |
int, int *, int *, char **)); |
|
extern int _EXFUN(_ldcheck,(_LONG_DOUBLE *)); |
|
# define _PRINTF_FLOAT_TYPE _LONG_DOUBLE |
# define _DTOA_R _ldtoa_r |
/* FIXME - frexpl is not yet supported; and cvt infloops if (double)f |
converts a finite value into infinity. */ |
/* # define FREXP frexpl */ |
# define FREXP(f,e) ((_LONG_DOUBLE) frexp ((double)f, e)) |
# endif /* !_NO_LONGDBL */ |
|
static char *cvt(struct _reent *, _PRINTF_FLOAT_TYPE, int, int, char *, int *, |
int, int *, char *); |
|
static int exponent(char *, int, int); |
|
#endif /* FLOATING_POINT */ |
|
/* BUF must be big enough for the maximum %#llo (assuming long long is |
at most 64 bits, this would be 23 characters), the maximum |
multibyte character %C, and the maximum default precision of %La |
(assuming long double is at most 128 bits with 113 bits of |
mantissa, this would be 29 characters). %e, %f, and %g use |
reentrant storage shared with mprec. All other formats that use |
buf get by with fewer characters. Making BUF slightly bigger |
reduces the need for malloc in %.*a and %S, when large precision or |
long strings are processed. |
The bigger size of 100 bytes is used on systems which allow number |
strings using the locale's grouping character. Since that's a multibyte |
value, we should use a conservative value. |
*/ |
#ifdef _WANT_IO_C99_FORMATS |
#define BUF 100 |
#else |
#define BUF 40 |
#endif |
#if defined _MB_CAPABLE && MB_LEN_MAX > BUF |
# undef BUF |
# define BUF MB_LEN_MAX |
#endif |
|
#ifndef _NO_LONGLONG |
# define quad_t long long |
# define u_quad_t unsigned long long |
#else |
# define quad_t long |
# define u_quad_t unsigned long |
#endif |
|
typedef quad_t * quad_ptr_t; |
typedef _PTR void_ptr_t; |
typedef char * char_ptr_t; |
typedef long * long_ptr_t; |
typedef int * int_ptr_t; |
typedef short * short_ptr_t; |
|
#ifndef _NO_POS_ARGS |
# ifdef NL_ARGMAX |
# define MAX_POS_ARGS NL_ARGMAX |
# else |
# define MAX_POS_ARGS 32 |
# endif |
|
union arg_val |
{ |
int val_int; |
u_int val_u_int; |
long val_long; |
u_long val_u_long; |
float val_float; |
double val_double; |
_LONG_DOUBLE val__LONG_DOUBLE; |
int_ptr_t val_int_ptr_t; |
short_ptr_t val_short_ptr_t; |
long_ptr_t val_long_ptr_t; |
char_ptr_t val_char_ptr_t; |
quad_ptr_t val_quad_ptr_t; |
void_ptr_t val_void_ptr_t; |
quad_t val_quad_t; |
u_quad_t val_u_quad_t; |
wint_t val_wint_t; |
}; |
|
static union arg_val * |
_EXFUN(get_arg, (struct _reent *data, int n, char *fmt, |
va_list *ap, int *numargs, union arg_val *args, |
int *arg_type, char **last_fmt)); |
#endif /* !_NO_POS_ARGS */ |
|
/* |
* Macros for converting digits to letters and vice versa |
*/ |
#define to_digit(c) ((c) - '0') |
#define is_digit(c) ((unsigned)to_digit (c) <= 9) |
#define to_char(n) ((n) + '0') |
|
/* |
* Flags used during conversion. |
*/ |
#define ALT 0x001 /* alternate form */ |
#define HEXPREFIX 0x002 /* add 0x or 0X prefix */ |
#define LADJUST 0x004 /* left adjustment */ |
#define LONGDBL 0x008 /* long double */ |
#define LONGINT 0x010 /* long integer */ |
#ifndef _NO_LONGLONG |
# define QUADINT 0x020 /* quad integer */ |
#else /* ifdef _NO_LONGLONG, make QUADINT equivalent to LONGINT, so |
that %lld behaves the same as %ld, not as %d, as expected if: |
sizeof (long long) = sizeof long > sizeof int */ |
# define QUADINT LONGINT |
#endif |
#define SHORTINT 0x040 /* short integer */ |
#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */ |
#define FPT 0x100 /* Floating point number */ |
#ifdef _WANT_IO_C99_FORMATS |
# define CHARINT 0x200 /* char as integer */ |
#else /* define as 0, to make SARG and UARG occupy fewer instructions */ |
# define CHARINT 0 |
#endif |
#ifdef _WANT_IO_C99_FORMATS |
# define GROUPING 0x400 /* use grouping ("'" flag) */ |
#endif |
|
int _EXFUN(_VFPRINTF_R, (struct _reent *, FILE *, _CONST char *, va_list)); |
|
#ifndef STRING_ONLY |
int |
_DEFUN(VFPRINTF, (fp, fmt0, ap), |
FILE * fp _AND |
_CONST char *fmt0 _AND |
va_list ap) |
{ |
int result; |
result = _VFPRINTF_R (_REENT, fp, fmt0, ap); |
return result; |
} |
#endif /* STRING_ONLY */ |
|
int |
_DEFUN(_VFPRINTF_R, (data, fp, fmt0, ap), |
struct _reent *data _AND |
FILE * fp _AND |
_CONST char *fmt0 _AND |
va_list ap) |
{ |
register char *fmt; /* format string */ |
register int ch; /* character from fmt */ |
register int n, m; /* handy integers (short term usage) */ |
register char *cp; /* handy char pointer (short term usage) */ |
register struct __siov *iovp;/* for PRINT macro */ |
register int flags; /* flags as above */ |
char *fmt_anchor; /* current format spec being processed */ |
#ifndef _NO_POS_ARGS |
int N; /* arg number */ |
int arg_index; /* index into args processed directly */ |
int numargs; /* number of varargs read */ |
char *saved_fmt; /* saved fmt pointer */ |
union arg_val args[MAX_POS_ARGS]; |
int arg_type[MAX_POS_ARGS]; |
int is_pos_arg; /* is current format positional? */ |
int old_is_pos_arg; /* is current format positional? */ |
#endif |
int ret; /* return value accumulator */ |
int width; /* width from format (%8d), or 0 */ |
int prec; /* precision from format (%.3d), or -1 */ |
char sign; /* sign prefix (' ', '+', '-', or \0) */ |
#ifdef _WANT_IO_C99_FORMATS |
/* locale specific numeric grouping */ |
char *thousands_sep; |
size_t thsnd_len; |
const char *grouping; |
#endif |
#ifdef FLOATING_POINT |
char *decimal_point = _localeconv_r (data)->decimal_point; |
size_t decp_len = strlen (decimal_point); |
char softsign; /* temporary negative sign for floats */ |
union { int i; _PRINTF_FLOAT_TYPE fp; } _double_ = {0}; |
# define _fpvalue (_double_.fp) |
int expt; /* integer value of exponent */ |
int expsize = 0; /* character count for expstr */ |
char expstr[MAXEXPLEN]; /* buffer for exponent string */ |
int lead; /* sig figs before decimal or group sep */ |
#endif /* FLOATING_POINT */ |
#if defined (FLOATING_POINT) || defined (_WANT_IO_C99_FORMATS) |
int ndig = 0; /* actual number of digits returned by cvt */ |
#endif |
#ifdef _WANT_IO_C99_FORMATS |
int nseps; /* number of group separators with ' */ |
int nrepeats; /* number of repeats of the last group */ |
#endif |
u_quad_t _uquad; /* integer arguments %[diouxX] */ |
enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */ |
int dprec; /* a copy of prec if [diouxX], 0 otherwise */ |
int realsz; /* field size expanded by dprec */ |
int size; /* size of converted field or string */ |
char *xdigs = NULL; /* digits for [xX] conversion */ |
#define NIOV 8 |
struct __suio uio; /* output information: summary */ |
struct __siov iov[NIOV];/* ... and individual io vectors */ |
char buf[BUF]; /* space for %c, %S, %[diouxX], %[aA] */ |
char ox[2]; /* space for 0x hex-prefix */ |
#ifdef _MB_CAPABLE |
wchar_t wc; |
mbstate_t state; /* mbtowc calls from library must not change state */ |
#endif |
char *malloc_buf = NULL;/* handy pointer for malloced buffers */ |
|
/* |
* Choose PADSIZE to trade efficiency vs. size. If larger printf |
* fields occur frequently, increase PADSIZE and make the initialisers |
* below longer. |
*/ |
#define PADSIZE 16 /* pad chunk size */ |
static _CONST char blanks[PADSIZE] = |
{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '}; |
static _CONST char zeroes[PADSIZE] = |
{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'}; |
|
#ifdef _MB_CAPABLE |
memset (&state, '\0', sizeof (state)); |
#endif |
/* |
* BEWARE, these `goto error' on error, and PAD uses `n'. |
*/ |
#define PRINT(ptr, len) { \ |
iovp->iov_base = (ptr); \ |
iovp->iov_len = (len); \ |
uio.uio_resid += (len); \ |
iovp++; \ |
if (++uio.uio_iovcnt >= NIOV) { \ |
if (__SPRINT(data, fp, &uio)) \ |
goto error; \ |
iovp = iov; \ |
} \ |
} |
#define PAD(howmany, with) { \ |
if ((n = (howmany)) > 0) { \ |
while (n > PADSIZE) { \ |
PRINT (with, PADSIZE); \ |
n -= PADSIZE; \ |
} \ |
PRINT (with, n); \ |
} \ |
} |
#define PRINTANDPAD(p, ep, len, with) { \ |
int n = (ep) - (p); \ |
if (n > (len)) \ |
n = (len); \ |
if (n > 0) \ |
PRINT((p), n); \ |
PAD((len) - (n > 0 ? n : 0), (with)); \ |
} |
#define FLUSH() { \ |
if (uio.uio_resid && __SPRINT(data, fp, &uio)) \ |
goto error; \ |
uio.uio_iovcnt = 0; \ |
iovp = iov; \ |
} |
|
/* Macros to support positional arguments */ |
#ifndef _NO_POS_ARGS |
# define GET_ARG(n, ap, type) \ |
(is_pos_arg \ |
? (n < numargs \ |
? args[n].val_##type \ |
: get_arg (data, n, fmt_anchor, &ap, &numargs, args, \ |
arg_type, &saved_fmt)->val_##type) \ |
: (arg_index++ < numargs \ |
? args[n].val_##type \ |
: (numargs < MAX_POS_ARGS \ |
? args[numargs++].val_##type = va_arg (ap, type) \ |
: va_arg (ap, type)))) |
#else |
# define GET_ARG(n, ap, type) (va_arg (ap, type)) |
#endif |
|
/* |
* To extend shorts properly, we need both signed and unsigned |
* argument extraction methods. |
*/ |
#ifndef _NO_LONGLONG |
#define SARG() \ |
(flags&QUADINT ? GET_ARG (N, ap, quad_t) : \ |
flags&LONGINT ? GET_ARG (N, ap, long) : \ |
flags&SHORTINT ? (long)(short)GET_ARG (N, ap, int) : \ |
flags&CHARINT ? (long)(signed char)GET_ARG (N, ap, int) : \ |
(long)GET_ARG (N, ap, int)) |
#define UARG() \ |
(flags&QUADINT ? GET_ARG (N, ap, u_quad_t) : \ |
flags&LONGINT ? GET_ARG (N, ap, u_long) : \ |
flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, ap, int) : \ |
flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, ap, int) : \ |
(u_long)GET_ARG (N, ap, u_int)) |
#else |
#define SARG() \ |
(flags&LONGINT ? GET_ARG (N, ap, long) : \ |
flags&SHORTINT ? (long)(short)GET_ARG (N, ap, int) : \ |
flags&CHARINT ? (long)(signed char)GET_ARG (N, ap, int) : \ |
(long)GET_ARG (N, ap, int)) |
#define UARG() \ |
(flags&LONGINT ? GET_ARG (N, ap, u_long) : \ |
flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, ap, int) : \ |
flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, ap, int) : \ |
(u_long)GET_ARG (N, ap, u_int)) |
#endif |
|
#ifndef STRING_ONLY |
/* Initialize std streams if not dealing with sprintf family. */ |
CHECK_INIT (data, fp); |
_flockfile (fp); |
|
ORIENT(fp, -1); |
|
/* sorry, fprintf(read_only_file, "") returns EOF, not 0 */ |
if (cantwrite (data, fp)) { |
_funlockfile (fp); |
return (EOF); |
} |
|
/* optimise fprintf(stderr) (and other unbuffered Unix files) */ |
if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) && |
fp->_file >= 0) { |
_funlockfile (fp); |
return (__sbprintf (data, fp, fmt0, ap)); |
} |
#else /* STRING_ONLY */ |
/* Create initial buffer if we are called by asprintf family. */ |
if (fp->_flags & __SMBF && !fp->_bf._base) |
{ |
fp->_bf._base = fp->_p = _malloc_r (data, 64); |
if (!fp->_p) |
{ |
data->_errno = ENOMEM; |
return EOF; |
} |
fp->_bf._size = 64; |
} |
#endif /* STRING_ONLY */ |
|
fmt = (char *)fmt0; |
uio.uio_iov = iovp = iov; |
uio.uio_resid = 0; |
uio.uio_iovcnt = 0; |
ret = 0; |
#ifndef _NO_POS_ARGS |
arg_index = 0; |
saved_fmt = NULL; |
arg_type[0] = -1; |
numargs = 0; |
is_pos_arg = 0; |
#endif |
|
/* |
* Scan the format for conversions (`%' character). |
*/ |
for (;;) { |
cp = fmt; |
#ifdef _MB_CAPABLE |
while ((n = __mbtowc (data, &wc, fmt, MB_CUR_MAX, |
__locale_charset (), &state)) != 0) { |
if (n < 0) { |
/* Wave invalid chars through. */ |
memset (&state, 0, sizeof state); |
n = 1; |
} |
else if (wc == '%') |
break; |
fmt += n; |
} |
#else |
while (*fmt != '\0' && *fmt != '%') |
fmt += 1; |
#endif |
if ((m = fmt - cp) != 0) { |
PRINT (cp, m); |
ret += m; |
} |
#ifdef _MB_CAPABLE |
if (n <= 0) |
goto done; |
#else |
if (*fmt == '\0') |
goto done; |
#endif |
fmt_anchor = fmt; |
fmt++; /* skip over '%' */ |
|
flags = 0; |
dprec = 0; |
width = 0; |
prec = -1; |
sign = '\0'; |
#ifdef FLOATING_POINT |
lead = 0; |
#endif |
#ifdef _WANT_IO_C99_FORMATS |
nseps = nrepeats = 0; |
#endif |
#ifndef _NO_POS_ARGS |
N = arg_index; |
is_pos_arg = 0; |
#endif |
|
rflag: ch = *fmt++; |
reswitch: switch (ch) { |
#ifdef _WANT_IO_C99_FORMATS |
case '\'': |
thousands_sep = _localeconv_r (data)->thousands_sep; |
thsnd_len = strlen (thousands_sep); |
grouping = _localeconv_r (data)->grouping; |
if (thsnd_len > 0 && grouping && *grouping) |
flags |= GROUPING; |
goto rflag; |
#endif |
case ' ': |
/* |
* ``If the space and + flags both appear, the space |
* flag will be ignored.'' |
* -- ANSI X3J11 |
*/ |
if (!sign) |
sign = ' '; |
goto rflag; |
case '#': |
flags |= ALT; |
goto rflag; |
case '*': |
#ifndef _NO_POS_ARGS |
/* we must check for positional arg used for dynamic width */ |
n = N; |
old_is_pos_arg = is_pos_arg; |
is_pos_arg = 0; |
if (is_digit (*fmt)) { |
char *old_fmt = fmt; |
|
n = 0; |
ch = *fmt++; |
do { |
n = 10 * n + to_digit (ch); |
ch = *fmt++; |
} while (is_digit (ch)); |
|
if (ch == '$') { |
if (n <= MAX_POS_ARGS) { |
n -= 1; |
is_pos_arg = 1; |
} |
else |
goto error; |
} |
else { |
fmt = old_fmt; |
goto rflag; |
} |
} |
#endif /* !_NO_POS_ARGS */ |
|
/* |
* ``A negative field width argument is taken as a |
* - flag followed by a positive field width.'' |
* -- ANSI X3J11 |
* They don't exclude field widths read from args. |
*/ |
width = GET_ARG (n, ap, int); |
#ifndef _NO_POS_ARGS |
is_pos_arg = old_is_pos_arg; |
#endif |
if (width >= 0) |
goto rflag; |
width = -width; |
/* FALLTHROUGH */ |
case '-': |
flags |= LADJUST; |
goto rflag; |
case '+': |
sign = '+'; |
goto rflag; |
case '.': |
if ((ch = *fmt++) == '*') { |
#ifndef _NO_POS_ARGS |
/* we must check for positional arg used for dynamic width */ |
n = N; |
old_is_pos_arg = is_pos_arg; |
is_pos_arg = 0; |
if (is_digit (*fmt)) { |
char *old_fmt = fmt; |
|
n = 0; |
ch = *fmt++; |
do { |
n = 10 * n + to_digit (ch); |
ch = *fmt++; |
} while (is_digit (ch)); |
|
if (ch == '$') { |
if (n <= MAX_POS_ARGS) { |
n -= 1; |
is_pos_arg = 1; |
} |
else |
goto error; |
} |
else { |
fmt = old_fmt; |
goto rflag; |
} |
} |
#endif /* !_NO_POS_ARGS */ |
prec = GET_ARG (n, ap, int); |
#ifndef _NO_POS_ARGS |
is_pos_arg = old_is_pos_arg; |
#endif |
if (prec < 0) |
prec = -1; |
goto rflag; |
} |
n = 0; |
while (is_digit (ch)) { |
n = 10 * n + to_digit (ch); |
ch = *fmt++; |
} |
prec = n < 0 ? -1 : n; |
goto reswitch; |
case '0': |
/* |
* ``Note that 0 is taken as a flag, not as the |
* beginning of a field width.'' |
* -- ANSI X3J11 |
*/ |
flags |= ZEROPAD; |
goto rflag; |
case '1': case '2': case '3': case '4': |
case '5': case '6': case '7': case '8': case '9': |
n = 0; |
do { |
n = 10 * n + to_digit (ch); |
ch = *fmt++; |
} while (is_digit (ch)); |
#ifndef _NO_POS_ARGS |
if (ch == '$') { |
if (n <= MAX_POS_ARGS) { |
N = n - 1; |
is_pos_arg = 1; |
goto rflag; |
} |
else |
goto error; |
} |
#endif /* !_NO_POS_ARGS */ |
width = n; |
goto reswitch; |
#ifdef FLOATING_POINT |
case 'L': |
flags |= LONGDBL; |
goto rflag; |
#endif |
case 'h': |
#ifdef _WANT_IO_C99_FORMATS |
if (*fmt == 'h') { |
fmt++; |
flags |= CHARINT; |
} else |
#endif |
flags |= SHORTINT; |
goto rflag; |
case 'l': |
#if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG |
if (*fmt == 'l') { |
fmt++; |
flags |= QUADINT; |
} else |
#endif |
flags |= LONGINT; |
goto rflag; |
case 'q': /* extension */ |
flags |= QUADINT; |
goto rflag; |
#ifdef _WANT_IO_C99_FORMATS |
case 'j': |
if (sizeof (intmax_t) == sizeof (long)) |
flags |= LONGINT; |
else |
flags |= QUADINT; |
goto rflag; |
case 'z': |
if (sizeof (size_t) < sizeof (int)) |
/* POSIX states size_t is 16 or more bits, as is short. */ |
flags |= SHORTINT; |
else if (sizeof (size_t) == sizeof (int)) |
/* no flag needed */; |
else if (sizeof (size_t) <= sizeof (long)) |
flags |= LONGINT; |
else |
/* POSIX states that at least one programming |
environment must support size_t no wider than |
long, but that means other environments can |
have size_t as wide as long long. */ |
flags |= QUADINT; |
goto rflag; |
case 't': |
if (sizeof (ptrdiff_t) < sizeof (int)) |
/* POSIX states ptrdiff_t is 16 or more bits, as |
is short. */ |
flags |= SHORTINT; |
else if (sizeof (ptrdiff_t) == sizeof (int)) |
/* no flag needed */; |
else if (sizeof (ptrdiff_t) <= sizeof (long)) |
flags |= LONGINT; |
else |
/* POSIX states that at least one programming |
environment must support ptrdiff_t no wider than |
long, but that means other environments can |
have ptrdiff_t as wide as long long. */ |
flags |= QUADINT; |
goto rflag; |
case 'C': |
#endif /* _WANT_IO_C99_FORMATS */ |
case 'c': |
cp = buf; |
#ifdef _MB_CAPABLE |
if (ch == 'C' || (flags & LONGINT)) { |
mbstate_t ps; |
|
memset ((_PTR)&ps, '\0', sizeof (mbstate_t)); |
if ((size = (int)_wcrtomb_r (data, cp, |
(wchar_t)GET_ARG (N, ap, wint_t), |
&ps)) == -1) { |
fp->_flags |= __SERR; |
goto error; |
} |
} |
else |
#endif /* _MB_CAPABLE */ |
{ |
*cp = GET_ARG (N, ap, int); |
size = 1; |
} |
sign = '\0'; |
break; |
case 'D': /* extension */ |
flags |= LONGINT; |
/*FALLTHROUGH*/ |
case 'd': |
case 'i': |
_uquad = SARG (); |
#ifndef _NO_LONGLONG |
if ((quad_t)_uquad < 0) |
#else |
if ((long) _uquad < 0) |
#endif |
{ |
|
_uquad = -_uquad; |
sign = '-'; |
} |
base = DEC; |
goto number; |
#ifdef FLOATING_POINT |
# ifdef _WANT_IO_C99_FORMATS |
case 'a': |
case 'A': |
case 'F': |
# endif |
case 'e': |
case 'E': |
case 'f': |
case 'g': |
case 'G': |
# ifdef _NO_LONGDBL |
if (flags & LONGDBL) { |
_fpvalue = (double) GET_ARG (N, ap, _LONG_DOUBLE); |
} else { |
_fpvalue = GET_ARG (N, ap, double); |
} |
|
/* do this before tricky precision changes |
|
If the output is infinite or NaN, leading |
zeros are not permitted. Otherwise, scanf |
could not read what printf wrote. |
*/ |
if (isinf (_fpvalue)) { |
if (_fpvalue < 0) |
sign = '-'; |
if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ |
cp = "INF"; |
else |
cp = "inf"; |
size = 3; |
flags &= ~ZEROPAD; |
break; |
} |
if (isnan (_fpvalue)) { |
if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ |
cp = "NAN"; |
else |
cp = "nan"; |
size = 3; |
flags &= ~ZEROPAD; |
break; |
} |
|
# else /* !_NO_LONGDBL */ |
|
if (flags & LONGDBL) { |
_fpvalue = GET_ARG (N, ap, _LONG_DOUBLE); |
} else { |
_fpvalue = (_LONG_DOUBLE)GET_ARG (N, ap, double); |
} |
|
/* do this before tricky precision changes */ |
expt = _ldcheck (&_fpvalue); |
if (expt == 2) { |
if (_fpvalue < 0) |
sign = '-'; |
if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ |
cp = "INF"; |
else |
cp = "inf"; |
size = 3; |
flags &= ~ZEROPAD; |
break; |
} |
if (expt == 1) { |
if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */ |
cp = "NAN"; |
else |
cp = "nan"; |
size = 3; |
flags &= ~ZEROPAD; |
break; |
} |
# endif /* !_NO_LONGDBL */ |
|
# ifdef _WANT_IO_C99_FORMATS |
if (ch == 'a' || ch == 'A') { |
ox[0] = '0'; |
ox[1] = ch == 'a' ? 'x' : 'X'; |
flags |= HEXPREFIX; |
if (prec >= BUF) |
{ |
if ((malloc_buf = |
(char *)_malloc_r (data, prec + 1)) |
== NULL) |
{ |
fp->_flags |= __SERR; |
goto error; |
} |
cp = malloc_buf; |
} |
else |
cp = buf; |
} else |
# endif /* _WANT_IO_C99_FORMATS */ |
if (prec == -1) { |
prec = DEFPREC; |
} else if ((ch == 'g' || ch == 'G') && prec == 0) { |
prec = 1; |
} |
|
flags |= FPT; |
|
cp = cvt (data, _fpvalue, prec, flags, &softsign, |
&expt, ch, &ndig, cp); |
|
if (ch == 'g' || ch == 'G') { |
if (expt <= -4 || expt > prec) |
ch -= 2; /* 'e' or 'E' */ |
else |
ch = 'g'; |
} |
# ifdef _WANT_IO_C99_FORMATS |
else if (ch == 'F') |
ch = 'f'; |
# endif |
if (ch <= 'e') { /* 'a', 'A', 'e', or 'E' fmt */ |
--expt; |
expsize = exponent (expstr, expt, ch); |
size = expsize + ndig; |
if (ndig > 1 || flags & ALT) |
++size; |
# ifdef _WANT_IO_C99_FORMATS |
flags &= ~GROUPING; |
# endif |
} else { |
if (ch == 'f') { /* f fmt */ |
if (expt > 0) { |
size = expt; |
if (prec || flags & ALT) |
size += prec + 1; |
} else /* "0.X" */ |
size = (prec || flags & ALT) |
? prec + 2 |
: 1; |
} else if (expt >= ndig) { /* fixed g fmt */ |
size = expt; |
if (flags & ALT) |
++size; |
} else |
size = ndig + (expt > 0 ? |
1 : 2 - expt); |
# ifdef _WANT_IO_C99_FORMATS |
if ((flags & GROUPING) && expt > 0) { |
/* space for thousands' grouping */ |
nseps = nrepeats = 0; |
lead = expt; |
while (*grouping != CHAR_MAX) { |
if (lead <= *grouping) |
break; |
lead -= *grouping; |
if (grouping[1]) { |
nseps++; |
grouping++; |
} else |
nrepeats++; |
} |
size += (nseps + nrepeats) * thsnd_len; |
} else |
# endif |
lead = expt; |
} |
|
if (softsign) |
sign = '-'; |
break; |
#endif /* FLOATING_POINT */ |
case 'n': |
#ifndef _NO_LONGLONG |
if (flags & QUADINT) |
*GET_ARG (N, ap, quad_ptr_t) = ret; |
else |
#endif |
if (flags & LONGINT) |
*GET_ARG (N, ap, long_ptr_t) = ret; |
else if (flags & SHORTINT) |
*GET_ARG (N, ap, short_ptr_t) = ret; |
#ifdef _WANT_IO_C99_FORMATS |
else if (flags & CHARINT) |
*GET_ARG (N, ap, char_ptr_t) = ret; |
#endif |
else |
*GET_ARG (N, ap, int_ptr_t) = ret; |
continue; /* no output */ |
case 'O': /* extension */ |
flags |= LONGINT; |
/*FALLTHROUGH*/ |
case 'o': |
_uquad = UARG (); |
base = OCT; |
#ifdef _WANT_IO_C99_FORMATS |
flags &= ~GROUPING; |
#endif |
goto nosign; |
case 'p': |
/* |
* ``The argument shall be a pointer to void. The |
* value of the pointer is converted to a sequence |
* of printable characters, in an implementation- |
* defined manner.'' |
* -- ANSI X3J11 |
*/ |
/* NOSTRICT */ |
_uquad = (uintptr_t) GET_ARG (N, ap, void_ptr_t); |
base = HEX; |
xdigs = "0123456789abcdef"; |
flags |= HEXPREFIX; |
ox[0] = '0'; |
ox[1] = ch = 'x'; |
goto nosign; |
case 's': |
#ifdef _WANT_IO_C99_FORMATS |
case 'S': |
#endif |
sign = '\0'; |
cp = GET_ARG (N, ap, char_ptr_t); |
#ifndef __OPTIMIZE_SIZE__ |
/* Behavior is undefined if the user passed a |
NULL string when precision is not 0. |
However, if we are not optimizing for size, |
we might as well mirror glibc behavior. */ |
if (cp == NULL) { |
cp = "(null)"; |
size = ((unsigned) prec > 6U) ? 6 : prec; |
} |
else |
#endif /* __OPTIMIZE_SIZE__ */ |
#ifdef _MB_CAPABLE |
if (ch == 'S' || (flags & LONGINT)) { |
mbstate_t ps; |
_CONST wchar_t *wcp; |
|
wcp = (_CONST wchar_t *)cp; |
size = m = 0; |
memset ((_PTR)&ps, '\0', sizeof (mbstate_t)); |
|
/* Count number of bytes needed for multibyte |
string that will be produced from widechar |
string. */ |
if (prec >= 0) { |
while (1) { |
if (wcp[m] == L'\0') |
break; |
if ((n = (int)_wcrtomb_r (data, |
buf, wcp[m], &ps)) == -1) { |
fp->_flags |= __SERR; |
goto error; |
} |
if (n + size > prec) |
break; |
m += 1; |
size += n; |
if (size == prec) |
break; |
} |
} |
else { |
if ((size = (int)_wcsrtombs_r (data, |
NULL, &wcp, 0, &ps)) == -1) { |
fp->_flags |= __SERR; |
goto error; |
} |
wcp = (_CONST wchar_t *)cp; |
} |
|
if (size == 0) |
break; |
|
if (size >= BUF) { |
if ((malloc_buf = |
(char *)_malloc_r (data, size + 1)) |
== NULL) { |
fp->_flags |= __SERR; |
goto error; |
} |
cp = malloc_buf; |
} else |
cp = buf; |
|
/* Convert widechar string to multibyte string. */ |
memset ((_PTR)&ps, '\0', sizeof (mbstate_t)); |
if (_wcsrtombs_r (data, cp, &wcp, size, &ps) |
!= size) { |
fp->_flags |= __SERR; |
goto error; |
} |
cp[size] = '\0'; |
} |
else |
#endif /* _MB_CAPABLE */ |
if (prec >= 0) { |
/* |
* can't use strlen; can only look for the |
* NUL in the first `prec' characters, and |
* strlen () will go further. |
*/ |
char *p = memchr (cp, 0, prec); |
|
if (p != NULL) { |
size = p - cp; |
if (size > prec) |
size = prec; |
} else |
size = prec; |
} else |
size = strlen (cp); |
|
break; |
case 'U': /* extension */ |
flags |= LONGINT; |
/*FALLTHROUGH*/ |
case 'u': |
_uquad = UARG (); |
base = DEC; |
goto nosign; |
case 'X': |
xdigs = "0123456789ABCDEF"; |
goto hex; |
case 'x': |
xdigs = "0123456789abcdef"; |
hex: _uquad = UARG (); |
base = HEX; |
/* leading 0x/X only if non-zero */ |
if (flags & ALT && _uquad != 0) { |
ox[0] = '0'; |
ox[1] = ch; |
flags |= HEXPREFIX; |
} |
|
#ifdef _WANT_IO_C99_FORMATS |
flags &= ~GROUPING; |
#endif |
/* unsigned conversions */ |
nosign: sign = '\0'; |
/* |
* ``... diouXx conversions ... if a precision is |
* specified, the 0 flag will be ignored.'' |
* -- ANSI X3J11 |
*/ |
number: if ((dprec = prec) >= 0) |
flags &= ~ZEROPAD; |
|
/* |
* ``The result of converting a zero value with an |
* explicit precision of zero is no characters.'' |
* -- ANSI X3J11 |
*/ |
cp = buf + BUF; |
if (_uquad != 0 || prec != 0) { |
/* |
* Unsigned mod is hard, and unsigned mod |
* by a constant is easier than that by |
* a variable; hence this switch. |
*/ |
switch (base) { |
case OCT: |
do { |
*--cp = to_char (_uquad & 7); |
_uquad >>= 3; |
} while (_uquad); |
/* handle octal leading 0 */ |
if (flags & ALT && *cp != '0') |
*--cp = '0'; |
break; |
|
case DEC: |
/* many numbers are 1 digit */ |
if (_uquad < 10) { |
*--cp = to_char(_uquad); |
break; |
} |
#ifdef _WANT_IO_C99_FORMATS |
ndig = 0; |
#endif |
do { |
*--cp = to_char (_uquad % 10); |
#ifdef _WANT_IO_C99_FORMATS |
ndig++; |
/* If (*grouping == CHAR_MAX) then no |
more grouping */ |
if ((flags & GROUPING) |
&& ndig == *grouping |
&& *grouping != CHAR_MAX |
&& _uquad > 9) { |
cp -= thsnd_len; |
strncpy (cp, thousands_sep, |
thsnd_len); |
ndig = 0; |
/* If (grouping[1] == '\0') then we |
have to use *grouping character |
(last grouping rule) for all |
next cases. */ |
if (grouping[1] != '\0') |
grouping++; |
} |
#endif |
_uquad /= 10; |
} while (_uquad != 0); |
break; |
|
case HEX: |
do { |
*--cp = xdigs[_uquad & 15]; |
_uquad >>= 4; |
} while (_uquad); |
break; |
|
default: |
cp = "bug in vfprintf: bad base"; |
size = strlen (cp); |
goto skipsize; |
} |
} |
/* |
* ...result is to be converted to an 'alternate form'. |
* For o conversion, it increases the precision to force |
* the first digit of the result to be a zero." |
* -- ANSI X3J11 |
* |
* To demonstrate this case, compile and run: |
* printf ("%#.0o",0); |
*/ |
else if (base == OCT && (flags & ALT)) |
*--cp = '0'; |
|
size = buf + BUF - cp; |
skipsize: |
break; |
default: /* "%?" prints ?, unless ? is NUL */ |
if (ch == '\0') |
goto done; |
/* pretend it was %c with argument ch */ |
cp = buf; |
*cp = ch; |
size = 1; |
sign = '\0'; |
break; |
} |
|
/* |
* All reasonable formats wind up here. At this point, `cp' |
* points to a string which (if not flags&LADJUST) should be |
* padded out to `width' places. If flags&ZEROPAD, it should |
* first be prefixed by any sign or other prefix; otherwise, |
* it should be blank padded before the prefix is emitted. |
* After any left-hand padding and prefixing, emit zeroes |
* required by a decimal [diouxX] precision, then print the |
* string proper, then emit zeroes required by any leftover |
* floating precision; finally, if LADJUST, pad with blanks. |
* If flags&FPT, ch must be in [aAeEfg]. |
* |
* Compute actual size, so we know how much to pad. |
* size excludes decimal prec; realsz includes it. |
*/ |
realsz = dprec > size ? dprec : size; |
if (sign) |
realsz++; |
if (flags & HEXPREFIX) |
realsz+= 2; |
|
/* right-adjusting blank padding */ |
if ((flags & (LADJUST|ZEROPAD)) == 0) |
PAD (width - realsz, blanks); |
|
/* prefix */ |
if (sign) |
PRINT (&sign, 1); |
if (flags & HEXPREFIX) |
PRINT (ox, 2); |
|
/* right-adjusting zero padding */ |
if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD) |
PAD (width - realsz, zeroes); |
|
/* leading zeroes from decimal precision */ |
PAD (dprec - size, zeroes); |
|
/* the string or number proper */ |
#ifdef FLOATING_POINT |
if ((flags & FPT) == 0) { |
PRINT (cp, size); |
} else { /* glue together f_p fragments */ |
if (ch >= 'f') { /* 'f' or 'g' */ |
if (_fpvalue == 0) { |
/* kludge for __dtoa irregularity */ |
PRINT ("0", 1); |
if (expt < ndig || flags & ALT) { |
PRINT (decimal_point, decp_len); |
PAD (ndig - 1, zeroes); |
} |
} else if (expt <= 0) { |
PRINT ("0", 1); |
if (expt || ndig || flags & ALT) { |
PRINT (decimal_point, decp_len); |
PAD (-expt, zeroes); |
PRINT (cp, ndig); |
} |
} else { |
char *convbuf = cp; |
PRINTANDPAD(cp, convbuf + ndig, |
lead, zeroes); |
cp += lead; |
#ifdef _WANT_IO_C99_FORMATS |
if (flags & GROUPING) { |
while (nseps > 0 || nrepeats > 0) { |
if (nrepeats > 0) |
nrepeats--; |
else { |
grouping--; |
nseps--; |
} |
PRINT(thousands_sep, thsnd_len); |
PRINTANDPAD (cp, convbuf + ndig, |
*grouping, zeroes); |
cp += *grouping; |
} |
if (cp > convbuf + ndig) |
cp = convbuf + ndig; |
} |
#endif |
if (expt < ndig || flags & ALT) |
PRINT (decimal_point, decp_len); |
PRINTANDPAD (cp, convbuf + ndig, |
ndig - expt, zeroes); |
} |
} else { /* 'a', 'A', 'e', or 'E' */ |
if (ndig > 1 || flags & ALT) { |
PRINT (cp, 1); |
cp++; |
PRINT (decimal_point, decp_len); |
if (_fpvalue) { |
PRINT (cp, ndig - 1); |
} else /* 0.[0..] */ |
/* __dtoa irregularity */ |
PAD (ndig - 1, zeroes); |
} else /* XeYYY */ |
PRINT (cp, 1); |
PRINT (expstr, expsize); |
} |
} |
#else /* !FLOATING_POINT */ |
PRINT (cp, size); |
#endif |
/* left-adjusting padding (always blank) */ |
if (flags & LADJUST) |
PAD (width - realsz, blanks); |
|
/* finally, adjust ret */ |
ret += width > realsz ? width : realsz; |
|
FLUSH (); /* copy out the I/O vectors */ |
|
if (malloc_buf != NULL) { |
_free_r (data, malloc_buf); |
malloc_buf = NULL; |
} |
} |
done: |
FLUSH (); |
error: |
if (malloc_buf != NULL) |
_free_r (data, malloc_buf); |
#ifndef STRING_ONLY |
_funlockfile (fp); |
#endif |
return (__sferror (fp) ? EOF : ret); |
/* NOTREACHED */ |
} |
|
#ifdef FLOATING_POINT |
|
/* Using reentrant DATA, convert finite VALUE into a string of digits |
with no decimal point, using NDIGITS precision and FLAGS as guides |
to whether trailing zeros must be included. Set *SIGN to nonzero |
if VALUE was negative. Set *DECPT to the exponent plus one. Set |
*LENGTH to the length of the returned string. CH must be one of |
[aAeEfFgG]; if it is [aA], then the return string lives in BUF, |
otherwise the return value shares the mprec reentrant storage. */ |
static char * |
cvt(struct _reent *data, _PRINTF_FLOAT_TYPE value, int ndigits, int flags, |
char *sign, int *decpt, int ch, int *length, char *buf) |
{ |
int mode, dsgn; |
char *digits, *bp, *rve; |
# ifdef _NO_LONGDBL |
union double_union tmp; |
|
tmp.d = value; |
if (word0 (tmp) & Sign_bit) { /* this will check for < 0 and -0.0 */ |
value = -value; |
*sign = '-'; |
} else |
*sign = '\000'; |
# else /* !_NO_LONGDBL */ |
union |
{ |
struct ldieee ieee; |
_LONG_DOUBLE val; |
} ld; |
|
ld.val = value; |
if (ld.ieee.sign) { /* this will check for < 0 and -0.0 */ |
value = -value; |
*sign = '-'; |
} else |
*sign = '\000'; |
# endif /* !_NO_LONGDBL */ |
|
# ifdef _WANT_IO_C99_FORMATS |
if (ch == 'a' || ch == 'A') { |
/* This code assumes FLT_RADIX is a power of 2. The initial |
division ensures the digit before the decimal will be less |
than FLT_RADIX (unless it is rounded later). There is no |
loss of precision in these calculations. */ |
value = FREXP (value, decpt) / 8; |
if (!value) |
*decpt = 1; |
digits = ch == 'a' ? "0123456789abcdef" : "0123456789ABCDEF"; |
bp = buf; |
do { |
value *= 16; |
mode = (int) value; |
value -= mode; |
*bp++ = digits[mode]; |
} while (ndigits-- && value); |
if (value > 0.5 || (value == 0.5 && mode & 1)) { |
/* round to even */ |
rve = bp; |
while (*--rve == digits[0xf]) { |
*rve = '0'; |
} |
*rve = *rve == '9' ? digits[0xa] : *rve + 1; |
} else { |
while (ndigits-- >= 0) { |
*bp++ = '0'; |
} |
} |
*length = bp - buf; |
return buf; |
} |
# endif /* _WANT_IO_C99_FORMATS */ |
if (ch == 'f' || ch == 'F') { |
mode = 3; /* ndigits after the decimal point */ |
} else { |
/* To obtain ndigits after the decimal point for the 'e' |
* and 'E' formats, round to ndigits + 1 significant |
* figures. |
*/ |
if (ch == 'e' || ch == 'E') { |
ndigits++; |
} |
mode = 2; /* ndigits significant digits */ |
} |
|
digits = _DTOA_R (data, value, mode, ndigits, decpt, &dsgn, &rve); |
|
if ((ch != 'g' && ch != 'G') || flags & ALT) { /* Print trailing zeros */ |
bp = digits + ndigits; |
if (ch == 'f' || ch == 'F') { |
if (*digits == '0' && value) |
*decpt = -ndigits + 1; |
bp += *decpt; |
} |
if (value == 0) /* kludge for __dtoa irregularity */ |
rve = bp; |
while (rve < bp) |
*rve++ = '0'; |
} |
*length = rve - digits; |
return (digits); |
} |
|
static int |
exponent(char *p0, int exp, int fmtch) |
{ |
register char *p, *t; |
char expbuf[MAXEXPLEN]; |
# ifdef _WANT_IO_C99_FORMATS |
int isa = fmtch == 'a' || fmtch == 'A'; |
# else |
# define isa 0 |
# endif |
|
p = p0; |
*p++ = isa ? 'p' - 'a' + fmtch : fmtch; |
if (exp < 0) { |
exp = -exp; |
*p++ = '-'; |
} |
else |
*p++ = '+'; |
t = expbuf + MAXEXPLEN; |
if (exp > 9) { |
do { |
*--t = to_char (exp % 10); |
} while ((exp /= 10) > 9); |
*--t = to_char (exp); |
for (; t < expbuf + MAXEXPLEN; *p++ = *t++); |
} |
else { |
if (!isa) |
*p++ = '0'; |
*p++ = to_char (exp); |
} |
return (p - p0); |
} |
#endif /* FLOATING_POINT */ |
|
|
#ifndef _NO_POS_ARGS |
|
/* Positional argument support. |
Written by Jeff Johnston |
|
Copyright (c) 2002 Red Hat Incorporated. |
All rights reserved. |
|
Redistribution and use in source and binary forms, with or without |
modification, are permitted provided that the following conditions are met: |
|
Redistributions of source code must retain the above copyright |
notice, this list of conditions and the following disclaimer. |
|
Redistributions in binary form must reproduce the above copyright |
notice, this list of conditions and the following disclaimer in the |
documentation and/or other materials provided with the distribution. |
|
The name of Red Hat Incorporated may not be used to endorse |
or promote products derived from this software without specific |
prior written permission. |
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY |
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ |
|
/* The below constant state tables are shared between all versions of |
vfprintf and vfwprintf. They must only be defined once, which we do in |
the STRING_ONLY/INTEGER_ONLY versions here. */ |
#if defined (STRING_ONLY) && defined(INTEGER_ONLY) |
|
_CONST __CH_CLASS __chclass[256] = { |
/* 00-07 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 08-0f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 10-17 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 18-1f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 20-27 */ FLAG, OTHER, OTHER, FLAG, DOLLAR, OTHER, OTHER, FLAG, |
/* 28-2f */ OTHER, OTHER, STAR, FLAG, OTHER, FLAG, DOT, OTHER, |
/* 30-37 */ ZERO, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, |
/* 38-3f */ DIGIT, DIGIT, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 40-47 */ OTHER, SPEC, OTHER, SPEC, SPEC, SPEC, SPEC, SPEC, |
/* 48-4f */ OTHER, OTHER, OTHER, OTHER, MODFR, OTHER, OTHER, SPEC, |
/* 50-57 */ OTHER, OTHER, OTHER, SPEC, OTHER, SPEC, OTHER, OTHER, |
/* 58-5f */ SPEC, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 60-67 */ OTHER, SPEC, OTHER, SPEC, SPEC, SPEC, SPEC, SPEC, |
/* 68-6f */ MODFR, SPEC, MODFR, OTHER, MODFR, OTHER, SPEC, SPEC, |
/* 70-77 */ SPEC, MODFR, OTHER, SPEC, MODFR, SPEC, OTHER, OTHER, |
/* 78-7f */ SPEC, OTHER, MODFR, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 80-87 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 88-8f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 90-97 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* 98-9f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* a0-a7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* a8-af */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* b0-b7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* b8-bf */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* c0-c7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* c8-cf */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* d0-d7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* d8-df */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* e0-e7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* e8-ef */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* f0-f7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
/* f8-ff */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, |
}; |
|
_CONST __STATE __state_table[MAX_STATE][MAX_CH_CLASS] = { |
/* '0' '1-9' '$' MODFR SPEC '.' '*' FLAG OTHER */ |
/* START */ { SFLAG, WDIG, DONE, SMOD, DONE, SDOT, VARW, SFLAG, DONE }, |
/* SFLAG */ { SFLAG, WDIG, DONE, SMOD, DONE, SDOT, VARW, SFLAG, DONE }, |
/* WDIG */ { DONE, DONE, WIDTH, SMOD, DONE, SDOT, DONE, DONE, DONE }, |
/* WIDTH */ { DONE, DONE, DONE, SMOD, DONE, SDOT, DONE, DONE, DONE }, |
/* SMOD */ { DONE, DONE, DONE, DONE, DONE, DONE, DONE, DONE, DONE }, |
/* SDOT */ { SDOT, PREC, DONE, SMOD, DONE, DONE, VARP, DONE, DONE }, |
/* VARW */ { DONE, VWDIG, DONE, SMOD, DONE, SDOT, DONE, DONE, DONE }, |
/* VARP */ { DONE, VPDIG, DONE, SMOD, DONE, DONE, DONE, DONE, DONE }, |
/* PREC */ { DONE, DONE, DONE, SMOD, DONE, DONE, DONE, DONE, DONE }, |
/* VWDIG */ { DONE, DONE, WIDTH, DONE, DONE, DONE, DONE, DONE, DONE }, |
/* VPDIG */ { DONE, DONE, PREC, DONE, DONE, DONE, DONE, DONE, DONE }, |
}; |
|
_CONST __ACTION __action_table[MAX_STATE][MAX_CH_CLASS] = { |
/* '0' '1-9' '$' MODFR SPEC '.' '*' FLAG OTHER */ |
/* START */ { NOOP, NUMBER, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
/* SFLAG */ { NOOP, NUMBER, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
/* WDIG */ { NOOP, NOOP, GETPOS, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
/* WIDTH */ { NOOP, NOOP, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
/* SMOD */ { NOOP, NOOP, NOOP, NOOP, GETARG, NOOP, NOOP, NOOP, NOOP }, |
/* SDOT */ { NOOP, SKIPNUM, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
/* VARW */ { NOOP, NUMBER, NOOP, GETPW, GETPWB, GETPW, NOOP, NOOP, NOOP }, |
/* VARP */ { NOOP, NUMBER, NOOP, GETPW, GETPWB, NOOP, NOOP, NOOP, NOOP }, |
/* PREC */ { NOOP, NOOP, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP }, |
/* VWDIG */ { NOOP, NOOP, PWPOS, NOOP, NOOP, NOOP, NOOP, NOOP, NOOP }, |
/* VPDIG */ { NOOP, NOOP, PWPOS, NOOP, NOOP, NOOP, NOOP, NOOP, NOOP }, |
}; |
|
#endif /* STRING_ONLY && INTEGER_ONLY */ |
|
/* function to get positional parameter N where n = N - 1 */ |
static union arg_val * |
_DEFUN(get_arg, (data, n, fmt, ap, numargs_p, args, arg_type, last_fmt), |
struct _reent *data _AND |
int n _AND |
char *fmt _AND |
va_list *ap _AND |
int *numargs_p _AND |
union arg_val *args _AND |
int *arg_type _AND |
char **last_fmt) |
{ |
int ch; |
int number, flags; |
int spec_type; |
int numargs = *numargs_p; |
__CH_CLASS chtype; |
__STATE state, next_state; |
__ACTION action; |
int pos, last_arg; |
int max_pos_arg = n; |
/* Only need types that can be reached via vararg promotions. */ |
enum types { INT, LONG_INT, QUAD_INT, CHAR_PTR, DOUBLE, LONG_DOUBLE, WIDE_CHAR }; |
# ifdef _MB_CAPABLE |
wchar_t wc; |
mbstate_t wc_state; |
int nbytes; |
# endif |
|
/* if this isn't the first call, pick up where we left off last time */ |
if (*last_fmt != NULL) |
fmt = *last_fmt; |
|
# ifdef _MB_CAPABLE |
memset (&wc_state, '\0', sizeof (wc_state)); |
# endif |
|
/* we need to process either to end of fmt string or until we have actually |
read the desired parameter from the vararg list. */ |
while (*fmt && n >= numargs) |
{ |
# ifdef _MB_CAPABLE |
while ((nbytes = __mbtowc (data, &wc, fmt, MB_CUR_MAX, |
__locale_charset (), &wc_state)) > 0) |
{ |
fmt += nbytes; |
if (wc == '%') |
break; |
} |
|
if (nbytes <= 0) |
break; |
# else |
while (*fmt != '\0' && *fmt != '%') |
fmt += 1; |
|
if (*fmt == '\0') |
break; |
# endif /* ! _MB_CAPABLE */ |
state = START; |
flags = 0; |
pos = -1; |
number = 0; |
spec_type = INT; |
|
/* Use state/action table to process format specifiers. We ignore invalid |
formats and we are only interested in information that tells us how to |
read the vararg list. */ |
while (state != DONE) |
{ |
ch = *fmt++; |
chtype = __chclass[ch]; |
next_state = __state_table[state][chtype]; |
action = __action_table[state][chtype]; |
state = next_state; |
|
switch (action) |
{ |
case GETMOD: /* we have format modifier */ |
switch (ch) |
{ |
case 'h': |
/* No flag needed, since short and char promote to int. */ |
break; |
case 'L': |
flags |= LONGDBL; |
break; |
case 'q': |
flags |= QUADINT; |
break; |
# ifdef _WANT_IO_C99_FORMATS |
case 'j': |
if (sizeof (intmax_t) == sizeof (long)) |
flags |= LONGINT; |
else |
flags |= QUADINT; |
break; |
case 'z': |
if (sizeof (size_t) <= sizeof (int)) |
/* no flag needed */; |
else if (sizeof (size_t) <= sizeof (long)) |
flags |= LONGINT; |
else |
/* POSIX states that at least one programming |
environment must support size_t no wider than |
long, but that means other environments can |
have size_t as wide as long long. */ |
flags |= QUADINT; |
break; |
case 't': |
if (sizeof (ptrdiff_t) <= sizeof (int)) |
/* no flag needed */; |
else if (sizeof (ptrdiff_t) <= sizeof (long)) |
flags |= LONGINT; |
else |
/* POSIX states that at least one programming |
environment must support ptrdiff_t no wider than |
long, but that means other environments can |
have ptrdiff_t as wide as long long. */ |
flags |= QUADINT; |
break; |
# endif /* _WANT_IO_C99_FORMATS */ |
case 'l': |
default: |
# if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG |
if (*fmt == 'l') |
{ |
flags |= QUADINT; |
++fmt; |
} |
else |
# endif |
flags |= LONGINT; |
break; |
} |
break; |
case GETARG: /* we have format specifier */ |
{ |
numargs &= (MAX_POS_ARGS - 1); |
/* process the specifier and translate it to a type to fetch from varargs */ |
switch (ch) |
{ |
case 'd': |
case 'i': |
case 'o': |
case 'x': |
case 'X': |
case 'u': |
if (flags & LONGINT) |
spec_type = LONG_INT; |
# ifndef _NO_LONGLONG |
else if (flags & QUADINT) |
spec_type = QUAD_INT; |
# endif |
else |
spec_type = INT; |
break; |
case 'D': |
case 'U': |
case 'O': |
spec_type = LONG_INT; |
break; |
# ifdef _WANT_IO_C99_FORMATS |
case 'a': |
case 'A': |
case 'F': |
# endif |
case 'f': |
case 'g': |
case 'G': |
case 'E': |
case 'e': |
# ifndef _NO_LONGDBL |
if (flags & LONGDBL) |
spec_type = LONG_DOUBLE; |
else |
# endif |
spec_type = DOUBLE; |
break; |
case 's': |
# ifdef _WANT_IO_C99_FORMATS |
case 'S': |
# endif |
case 'p': |
case 'n': |
spec_type = CHAR_PTR; |
break; |
case 'c': |
# ifdef _WANT_IO_C99_FORMATS |
if (flags & LONGINT) |
spec_type = WIDE_CHAR; |
else |
# endif |
spec_type = INT; |
break; |
# ifdef _WANT_IO_C99_FORMATS |
case 'C': |
spec_type = WIDE_CHAR; |
break; |
# endif |
} |
|
/* if we have a positional parameter, just store the type, otherwise |
fetch the parameter from the vararg list */ |
if (pos != -1) |
arg_type[pos] = spec_type; |
else |
{ |
switch (spec_type) |
{ |
case LONG_INT: |
args[numargs++].val_long = va_arg (*ap, long); |
break; |
case QUAD_INT: |
args[numargs++].val_quad_t = va_arg (*ap, quad_t); |
break; |
case WIDE_CHAR: |
args[numargs++].val_wint_t = va_arg (*ap, wint_t); |
break; |
case INT: |
args[numargs++].val_int = va_arg (*ap, int); |
break; |
case CHAR_PTR: |
args[numargs++].val_char_ptr_t = va_arg (*ap, char *); |
break; |
case DOUBLE: |
args[numargs++].val_double = va_arg (*ap, double); |
break; |
case LONG_DOUBLE: |
args[numargs++].val__LONG_DOUBLE = va_arg (*ap, _LONG_DOUBLE); |
break; |
} |
} |
} |
break; |
case GETPOS: /* we have positional specifier */ |
if (arg_type[0] == -1) |
memset (arg_type, 0, sizeof (int) * MAX_POS_ARGS); |
pos = number - 1; |
max_pos_arg = (max_pos_arg > pos ? max_pos_arg : pos); |
break; |
case PWPOS: /* we have positional specifier for width or precision */ |
if (arg_type[0] == -1) |
memset (arg_type, 0, sizeof (int) * MAX_POS_ARGS); |
number -= 1; |
arg_type[number] = INT; |
max_pos_arg = (max_pos_arg > number ? max_pos_arg : number); |
break; |
case GETPWB: /* we require format pushback */ |
--fmt; |
/* fallthrough */ |
case GETPW: /* we have a variable precision or width to acquire */ |
args[numargs++].val_int = va_arg (*ap, int); |
break; |
case NUMBER: /* we have a number to process */ |
number = (ch - '0'); |
while ((ch = *fmt) != '\0' && is_digit (ch)) |
{ |
number = number * 10 + (ch - '0'); |
++fmt; |
} |
break; |
case SKIPNUM: /* we have a number to skip */ |
while ((ch = *fmt) != '\0' && is_digit (ch)) |
++fmt; |
break; |
case NOOP: |
default: |
break; /* do nothing */ |
} |
} |
} |
|
/* process all arguments up to at least the one we are looking for and if we |
have seen the end of the string, then process up to the max argument needed */ |
if (*fmt == '\0') |
last_arg = max_pos_arg; |
else |
last_arg = n; |
|
while (numargs <= last_arg) |
{ |
switch (arg_type[numargs]) |
{ |
case LONG_INT: |
args[numargs++].val_long = va_arg (*ap, long); |
break; |
case QUAD_INT: |
args[numargs++].val_quad_t = va_arg (*ap, quad_t); |
break; |
case CHAR_PTR: |
args[numargs++].val_char_ptr_t = va_arg (*ap, char *); |
break; |
case DOUBLE: |
args[numargs++].val_double = va_arg (*ap, double); |
break; |
case LONG_DOUBLE: |
args[numargs++].val__LONG_DOUBLE = va_arg (*ap, _LONG_DOUBLE); |
break; |
case WIDE_CHAR: |
args[numargs++].val_wint_t = va_arg (*ap, wint_t); |
break; |
case INT: |
default: |
args[numargs++].val_int = va_arg (*ap, int); |
break; |
} |
} |
|
/* alter the global numargs value and keep a reference to the last bit of the fmt |
string we processed here because the caller will continue processing where we started */ |
*numargs_p = numargs; |
*last_fmt = fmt; |
return &args[n]; |
} |
#endif /* !_NO_POS_ARGS */ |