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| 1 | /* gzguts.h -- zlib internal header definitions for gz* operations |
1 | /* gzguts.h -- zlib internal header definitions for gz* operations |
| 2 | * Copyright (C) 2004, 2005, 2010 Mark Adler |
2 | * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler |
| 3 | * For conditions of distribution and use, see copyright notice in zlib.h |
3 | * For conditions of distribution and use, see copyright notice in zlib.h |
| 4 | */ |
4 | */ |
| Line 5... | Line 5... | ||
| 5 | 5 | ||
| 6 | #ifdef _LARGEFILE64_SOURCE |
6 | #ifdef _LARGEFILE64_SOURCE |
| Line 10... | Line 10... | ||
| 10 | # ifdef _FILE_OFFSET_BITS |
10 | # ifdef _FILE_OFFSET_BITS |
| 11 | # undef _FILE_OFFSET_BITS |
11 | # undef _FILE_OFFSET_BITS |
| 12 | # endif |
12 | # endif |
| 13 | #endif |
13 | #endif |
| Line 14... | Line 14... | ||
| 14 | 14 | ||
| 15 | #if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ) |
15 | #ifdef HAVE_HIDDEN |
| 16 | # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) |
16 | # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) |
| 17 | #else |
17 | #else |
| 18 | # define ZLIB_INTERNAL |
18 | # define ZLIB_INTERNAL |
| Line 29... | Line 29... | ||
| 29 | 29 | ||
| 30 | #ifdef NO_DEFLATE /* for compatibility with old definition */ |
30 | #ifdef NO_DEFLATE /* for compatibility with old definition */ |
| 31 | # define NO_GZCOMPRESS |
31 | # define NO_GZCOMPRESS |
| Line 32... | Line 32... | ||
| 32 | #endif |
32 | #endif |
| - | 33 | ||
| - | 34 | #define NO_vsnprintf |
|
| 33 | 35 | ||
| - | 36 | ||
| - | 37 | /* unlike snprintf (which is required in C99, yet still not supported by |
|
| 34 | #ifdef _MSC_VER |
38 | Microsoft more than a decade later!), _snprintf does not guarantee null |
| 35 | # include |
- | |
| Line 36... | Line 39... | ||
| 36 | # define vsnprintf _vsnprintf |
39 | termination of the result -- however this is only used in gzlib.c where |
| 37 | #endif |
40 | the result is assured to fit in the space provided */ |
| 38 | 41 | ||
| 39 | #ifndef local |
42 | #ifndef local |
| Line 50... | Line 53... | ||
| 50 | /* get errno and strerror definition */ |
53 | /* get errno and strerror definition */ |
| 51 | #if defined UNDER_CE |
54 | #if defined UNDER_CE |
| 52 | # include |
55 | # include |
| 53 | # define zstrerror() gz_strwinerror((DWORD)GetLastError()) |
56 | # define zstrerror() gz_strwinerror((DWORD)GetLastError()) |
| 54 | #else |
57 | #else |
| 55 | # ifdef STDC |
58 | # ifndef NO_STRERROR |
| 56 | # include |
59 | # include |
| 57 | # define zstrerror() strerror(errno) |
60 | # define zstrerror() strerror(errno) |
| 58 | # else |
61 | # else |
| 59 | # define zstrerror() "stdio error (consult errno)" |
62 | # define zstrerror() "stdio error (consult errno)" |
| 60 | # endif |
63 | # endif |
| Line 66... | Line 69... | ||
| 66 | ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); |
69 | ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int)); |
| 67 | ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); |
70 | ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile)); |
| 68 | ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); |
71 | ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile)); |
| 69 | #endif |
72 | #endif |
| Line -... | Line 73... | ||
| - | 73 | ||
| - | 74 | /* default memLevel */ |
|
| - | 75 | #if MAX_MEM_LEVEL >= 8 |
|
| - | 76 | # define DEF_MEM_LEVEL 8 |
|
| - | 77 | #else |
|
| - | 78 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
|
| - | 79 | #endif |
|
| 70 | 80 | ||
| - | 81 | /* default i/o buffer size -- double this for output when reading (this and |
|
| 71 | /* default i/o buffer size -- double this for output when reading */ |
82 | twice this must be able to fit in an unsigned type) */ |
| Line 72... | Line 83... | ||
| 72 | #define GZBUFSIZE 8192 |
83 | #define GZBUFSIZE 8192 |
| 73 | 84 | ||
| 74 | /* gzip modes, also provide a little integrity check on the passed structure */ |
85 | /* gzip modes, also provide a little integrity check on the passed structure */ |
| Line 82... | Line 93... | ||
| 82 | #define COPY 1 /* copy input directly */ |
93 | #define COPY 1 /* copy input directly */ |
| 83 | #define GZIP 2 /* decompress a gzip stream */ |
94 | #define GZIP 2 /* decompress a gzip stream */ |
| Line 84... | Line 95... | ||
| 84 | 95 | ||
| 85 | /* internal gzip file state data structure */ |
96 | /* internal gzip file state data structure */ |
| - | 97 | typedef struct { |
|
| - | 98 | /* exposed contents for gzgetc() macro */ |
|
| - | 99 | struct gzFile_s x; /* "x" for exposed */ |
|
| - | 100 | /* x.have: number of bytes available at x.next */ |
|
| - | 101 | /* x.next: next output data to deliver or write */ |
|
| 86 | typedef struct { |
102 | /* x.pos: current position in uncompressed data */ |
| 87 | /* used for both reading and writing */ |
103 | /* used for both reading and writing */ |
| 88 | int mode; /* see gzip modes above */ |
104 | int mode; /* see gzip modes above */ |
| 89 | int fd; /* file descriptor */ |
105 | int fd; /* file descriptor */ |
| 90 | char *path; /* path or fd for error messages */ |
- | |
| 91 | z_off64_t pos; /* current position in uncompressed data */ |
106 | char *path; /* path or fd for error messages */ |
| 92 | unsigned size; /* buffer size, zero if not allocated yet */ |
107 | unsigned size; /* buffer size, zero if not allocated yet */ |
| 93 | unsigned want; /* requested buffer size, default is GZBUFSIZE */ |
108 | unsigned want; /* requested buffer size, default is GZBUFSIZE */ |
| 94 | unsigned char *in; /* input buffer */ |
109 | unsigned char *in; /* input buffer */ |
| 95 | unsigned char *out; /* output buffer (double-sized when reading) */ |
110 | unsigned char *out; /* output buffer (double-sized when reading) */ |
| 96 | unsigned char *next; /* next output data to deliver or write */ |
111 | int direct; /* 0 if processing gzip, 1 if transparent */ |
| 97 | /* just for reading */ |
- | |
| 98 | unsigned have; /* amount of output data unused at next */ |
- | |
| 99 | int eof; /* true if end of input file reached */ |
- | |
| 100 | z_off64_t start; /* where the gzip data started, for rewinding */ |
- | |
| 101 | z_off64_t raw; /* where the raw data started, for seeking */ |
112 | /* just for reading */ |
| - | 113 | int how; /* 0: get header, 1: copy, 2: decompress */ |
|
| 102 | int how; /* 0: get header, 1: copy, 2: decompress */ |
114 | z_off64_t start; /* where the gzip data started, for rewinding */ |
| - | 115 | int eof; /* true if end of input file reached */ |
|
| 103 | int direct; /* true if last read direct, false if gzip */ |
116 | int past; /* true if read requested past end */ |
| 104 | /* just for writing */ |
117 | /* just for writing */ |
| 105 | int level; /* compression level */ |
118 | int level; /* compression level */ |
| 106 | int strategy; /* compression strategy */ |
119 | int strategy; /* compression strategy */ |
| 107 | /* seek request */ |
120 | /* seek request */ |