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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, 2011, 2012, 2013 Mark Adler | 2 * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 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 */ |
5 | 5 |
6 #ifdef _LARGEFILE64_SOURCE | 6 #ifdef _LARGEFILE64_SOURCE |
7 # ifndef _LARGEFILE_SOURCE | 7 # ifndef _LARGEFILE_SOURCE |
8 # define _LARGEFILE_SOURCE 1 | 8 # define _LARGEFILE_SOURCE 1 |
9 # endif | 9 # endif |
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 |
14 | 14 |
15 #ifdef HAVE_HIDDEN | 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 |
19 #endif | 19 #endif |
20 | 20 |
21 #include <stdio.h> | 21 #include <stdio.h> |
22 #include "zlib.h" | 22 #include "zlib.h" |
23 #ifdef STDC | 23 #ifdef STDC |
24 # include <string.h> | 24 # include <string.h> |
25 # include <stdlib.h> | 25 # include <stdlib.h> |
26 # include <limits.h> | 26 # include <limits.h> |
27 #endif | 27 #endif |
| 28 |
| 29 #ifndef _POSIX_SOURCE |
| 30 # define _POSIX_SOURCE |
| 31 #endif |
28 #include <fcntl.h> | 32 #include <fcntl.h> |
29 | 33 |
30 #ifdef _WIN32 | 34 #ifdef _WIN32 |
31 # include <stddef.h> | 35 # include <stddef.h> |
32 #endif | 36 #endif |
33 | 37 |
34 #if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32) | 38 #if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32) |
35 # include <io.h> | 39 # include <io.h> |
36 #endif | 40 #endif |
37 | 41 |
| 42 #if defined(_WIN32) || defined(__CYGWIN__) |
| 43 # define WIDECHAR |
| 44 #endif |
| 45 |
38 #ifdef WINAPI_FAMILY | 46 #ifdef WINAPI_FAMILY |
39 # define open _open | 47 # define open _open |
40 # define read _read | 48 # define read _read |
41 # define write _write | 49 # define write _write |
42 # define close _close | 50 # define close _close |
43 #endif | 51 #endif |
44 | 52 |
45 #ifdef NO_DEFLATE /* for compatibility with old definition */ | 53 #ifdef NO_DEFLATE /* for compatibility with old definition */ |
46 # define NO_GZCOMPRESS | 54 # define NO_GZCOMPRESS |
47 #endif | 55 #endif |
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88 # define NO_vsnprintf | 96 # define NO_vsnprintf |
89 # endif | 97 # endif |
90 # ifdef __OS400__ | 98 # ifdef __OS400__ |
91 # define NO_vsnprintf | 99 # define NO_vsnprintf |
92 # endif | 100 # endif |
93 # ifdef __MVS__ | 101 # ifdef __MVS__ |
94 # define NO_vsnprintf | 102 # define NO_vsnprintf |
95 # endif | 103 # endif |
96 #endif | 104 #endif |
97 | 105 |
98 /* unlike snprintf (which is required in C99, yet still not supported by | 106 /* unlike snprintf (which is required in C99), _snprintf does not guarantee |
99 Microsoft more than a decade later!), _snprintf does not guarantee null | 107 null termination of the result -- however this is only used in gzlib.c where |
100 termination of the result -- however this is only used in gzlib.c where | |
101 the result is assured to fit in the space provided */ | 108 the result is assured to fit in the space provided */ |
102 #ifdef _MSC_VER | 109 #if defined(_MSC_VER) && _MSC_VER < 1900 |
103 # define snprintf _snprintf | 110 # define snprintf _snprintf |
104 #endif | 111 #endif |
105 | 112 |
106 #ifndef local | 113 #ifndef local |
107 # define local static | 114 # define local static |
108 #endif | 115 #endif |
109 /* compile with -Dlocal if your debugger can't find static symbols */ | 116 /* since "static" is used to mean two completely different things in C, we |
| 117 define "local" for the non-static meaning of "static", for readability |
| 118 (compile with -Dlocal if your debugger can't find static symbols) */ |
110 | 119 |
111 /* gz* functions always use library allocation functions */ | 120 /* gz* functions always use library allocation functions */ |
112 #ifndef STDC | 121 #ifndef STDC |
113 extern voidp malloc OF((uInt size)); | 122 extern voidp malloc OF((uInt size)); |
114 extern void free OF((voidpf ptr)); | 123 extern void free OF((voidpf ptr)); |
115 #endif | 124 #endif |
116 | 125 |
117 /* get errno and strerror definition */ | 126 /* get errno and strerror definition */ |
118 #if defined UNDER_CE | 127 #if defined UNDER_CE |
119 # include <windows.h> | 128 # include <windows.h> |
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163 struct gzFile_s x; /* "x" for exposed */ | 172 struct gzFile_s x; /* "x" for exposed */ |
164 /* x.have: number of bytes available at x.next */ | 173 /* x.have: number of bytes available at x.next */ |
165 /* x.next: next output data to deliver or write */ | 174 /* x.next: next output data to deliver or write */ |
166 /* x.pos: current position in uncompressed data */ | 175 /* x.pos: current position in uncompressed data */ |
167 /* used for both reading and writing */ | 176 /* used for both reading and writing */ |
168 int mode; /* see gzip modes above */ | 177 int mode; /* see gzip modes above */ |
169 int fd; /* file descriptor */ | 178 int fd; /* file descriptor */ |
170 char *path; /* path or fd for error messages */ | 179 char *path; /* path or fd for error messages */ |
171 unsigned size; /* buffer size, zero if not allocated yet */ | 180 unsigned size; /* buffer size, zero if not allocated yet */ |
172 unsigned want; /* requested buffer size, default is GZBUFSIZE */ | 181 unsigned want; /* requested buffer size, default is GZBUFSIZE */ |
173 unsigned char *in; /* input buffer */ | 182 unsigned char *in; /* input buffer (double-sized when writing) */ |
174 unsigned char *out; /* output buffer (double-sized when reading) */ | 183 unsigned char *out; /* output buffer (double-sized when reading) */ |
175 int direct; /* 0 if processing gzip, 1 if transparent */ | 184 int direct; /* 0 if processing gzip, 1 if transparent */ |
176 /* just for reading */ | 185 /* just for reading */ |
177 int how; /* 0: get header, 1: copy, 2: decompress */ | 186 int how; /* 0: get header, 1: copy, 2: decompress */ |
178 z_off64_t start; /* where the gzip data started, for rewinding */ | 187 z_off64_t start; /* where the gzip data started, for rewinding */ |
179 int eof; /* true if end of input file reached */ | 188 int eof; /* true if end of input file reached */ |
180 int past; /* true if read requested past end */ | 189 int past; /* true if read requested past end */ |
181 /* just for writing */ | 190 /* just for writing */ |
182 int level; /* compression level */ | 191 int level; /* compression level */ |
183 int strategy; /* compression strategy */ | 192 int strategy; /* compression strategy */ |
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200 | 209 |
201 /* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t | 210 /* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t |
202 value -- needed when comparing unsigned to z_off64_t, which is signed | 211 value -- needed when comparing unsigned to z_off64_t, which is signed |
203 (possible z_off64_t types off_t, off64_t, and long are all signed) */ | 212 (possible z_off64_t types off_t, off64_t, and long are all signed) */ |
204 #ifdef INT_MAX | 213 #ifdef INT_MAX |
205 # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX) | 214 # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX) |
206 #else | 215 #else |
207 unsigned ZLIB_INTERNAL gz_intmax OF((void)); | 216 unsigned ZLIB_INTERNAL gz_intmax OF((void)); |
208 # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax()) | 217 # define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax()) |
209 #endif | 218 #endif |
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