| 1 | /* zutil.h -- internal interface and configuration of the compression library
|
|---|
| 2 | * Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
|
|---|
| 3 | * For conditions of distribution and use, see copyright notice in zlib.h
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /* WARNING: this file should *not* be used by applications. It is
|
|---|
| 7 | part of the implementation of the compression library and is
|
|---|
| 8 | subject to change. Applications should only use zlib.h.
|
|---|
| 9 | */
|
|---|
| 10 |
|
|---|
| 11 | /* @(#) $Id$ */
|
|---|
| 12 |
|
|---|
| 13 | #ifndef ZUTIL_H
|
|---|
| 14 | #define ZUTIL_H
|
|---|
| 15 |
|
|---|
| 16 | #ifdef HAVE_HIDDEN
|
|---|
| 17 | # define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
|
|---|
| 18 | #else
|
|---|
| 19 | # define ZLIB_INTERNAL
|
|---|
| 20 | #endif
|
|---|
| 21 |
|
|---|
| 22 | #include "zlib.h"
|
|---|
| 23 |
|
|---|
| 24 | #if defined(STDC) && !defined(Z_SOLO)
|
|---|
| 25 | # if !(defined(_WIN32_WCE) && defined(_MSC_VER))
|
|---|
| 26 | # include <stddef.h>
|
|---|
| 27 | # endif
|
|---|
| 28 | # include <string.h>
|
|---|
| 29 | # include <stdlib.h>
|
|---|
| 30 | #endif
|
|---|
| 31 |
|
|---|
| 32 | #ifndef local
|
|---|
| 33 | # define local static
|
|---|
| 34 | #endif
|
|---|
| 35 | /* since "static" is used to mean two completely different things in C, we
|
|---|
| 36 | define "local" for the non-static meaning of "static", for readability
|
|---|
| 37 | (compile with -Dlocal if your debugger can't find static symbols) */
|
|---|
| 38 |
|
|---|
| 39 | typedef unsigned char uch;
|
|---|
| 40 | typedef uch FAR uchf;
|
|---|
| 41 | typedef unsigned short ush;
|
|---|
| 42 | typedef ush FAR ushf;
|
|---|
| 43 | typedef unsigned long ulg;
|
|---|
| 44 |
|
|---|
| 45 | #if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC)
|
|---|
| 46 | # include <limits.h>
|
|---|
| 47 | # if (ULONG_MAX == 0xffffffffffffffff)
|
|---|
| 48 | # define Z_U8 unsigned long
|
|---|
| 49 | # elif (ULLONG_MAX == 0xffffffffffffffff)
|
|---|
| 50 | # define Z_U8 unsigned long long
|
|---|
| 51 | # elif (UINT_MAX == 0xffffffffffffffff)
|
|---|
| 52 | # define Z_U8 unsigned
|
|---|
| 53 | # endif
|
|---|
| 54 | #endif
|
|---|
| 55 |
|
|---|
| 56 | extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
|
|---|
| 57 | /* (size given to avoid silly warnings with Visual C++) */
|
|---|
| 58 |
|
|---|
| 59 | #define ERR_MSG(err) z_errmsg[(err) < -6 || (err) > 2 ? 9 : 2 - (err)]
|
|---|
| 60 |
|
|---|
| 61 | #define ERR_RETURN(strm,err) \
|
|---|
| 62 | return (strm->msg = ERR_MSG(err), (err))
|
|---|
| 63 | /* To be used only when the state is known to be valid */
|
|---|
| 64 |
|
|---|
| 65 | /* common constants */
|
|---|
| 66 |
|
|---|
| 67 | #ifndef DEF_WBITS
|
|---|
| 68 | # define DEF_WBITS MAX_WBITS
|
|---|
| 69 | #endif
|
|---|
| 70 | /* default windowBits for decompression. MAX_WBITS is for compression only */
|
|---|
| 71 |
|
|---|
| 72 | #if MAX_MEM_LEVEL >= 8
|
|---|
| 73 | # define DEF_MEM_LEVEL 8
|
|---|
| 74 | #else
|
|---|
| 75 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL
|
|---|
| 76 | #endif
|
|---|
| 77 | /* default memLevel */
|
|---|
| 78 |
|
|---|
| 79 | #define STORED_BLOCK 0
|
|---|
| 80 | #define STATIC_TREES 1
|
|---|
| 81 | #define DYN_TREES 2
|
|---|
| 82 | /* The three kinds of block type */
|
|---|
| 83 |
|
|---|
| 84 | #define MIN_MATCH 3
|
|---|
| 85 | #define MAX_MATCH 258
|
|---|
| 86 | /* The minimum and maximum match lengths */
|
|---|
| 87 |
|
|---|
| 88 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
|
|---|
| 89 |
|
|---|
| 90 | /* target dependencies */
|
|---|
| 91 |
|
|---|
| 92 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
|
|---|
| 93 | # define OS_CODE 0x00
|
|---|
| 94 | # ifndef Z_SOLO
|
|---|
| 95 | # if defined(__TURBOC__) || defined(__BORLANDC__)
|
|---|
| 96 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
|
|---|
| 97 | /* Allow compilation with ANSI keywords only enabled */
|
|---|
| 98 | void _Cdecl farfree( void *block );
|
|---|
| 99 | void *_Cdecl farmalloc( unsigned long nbytes );
|
|---|
| 100 | # else
|
|---|
| 101 | # include <alloc.h>
|
|---|
| 102 | # endif
|
|---|
| 103 | # else /* MSC or DJGPP */
|
|---|
| 104 | # include <malloc.h>
|
|---|
| 105 | # endif
|
|---|
| 106 | # endif
|
|---|
| 107 | #endif
|
|---|
| 108 |
|
|---|
| 109 | #ifdef AMIGA
|
|---|
| 110 | # define OS_CODE 1
|
|---|
| 111 | #endif
|
|---|
| 112 |
|
|---|
| 113 | #if defined(VAXC) || defined(VMS)
|
|---|
| 114 | # define OS_CODE 2
|
|---|
| 115 | # define F_OPEN(name, mode) \
|
|---|
| 116 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
|
|---|
| 117 | #endif
|
|---|
| 118 |
|
|---|
| 119 | #ifdef __370__
|
|---|
| 120 | # if __TARGET_LIB__ < 0x20000000
|
|---|
| 121 | # define OS_CODE 4
|
|---|
| 122 | # elif __TARGET_LIB__ < 0x40000000
|
|---|
| 123 | # define OS_CODE 11
|
|---|
| 124 | # else
|
|---|
| 125 | # define OS_CODE 8
|
|---|
| 126 | # endif
|
|---|
| 127 | #endif
|
|---|
| 128 |
|
|---|
| 129 | #if defined(ATARI) || defined(atarist)
|
|---|
| 130 | # define OS_CODE 5
|
|---|
| 131 | #endif
|
|---|
| 132 |
|
|---|
| 133 | #ifdef OS2
|
|---|
| 134 | # define OS_CODE 6
|
|---|
| 135 | # if defined(M_I86) && !defined(Z_SOLO)
|
|---|
| 136 | # include <malloc.h>
|
|---|
| 137 | # endif
|
|---|
| 138 | #endif
|
|---|
| 139 |
|
|---|
| 140 | #if defined(MACOS)
|
|---|
| 141 | # define OS_CODE 7
|
|---|
| 142 | #endif
|
|---|
| 143 |
|
|---|
| 144 | #ifdef __acorn
|
|---|
| 145 | # define OS_CODE 13
|
|---|
| 146 | #endif
|
|---|
| 147 |
|
|---|
| 148 | #if defined(WIN32) && !defined(__CYGWIN__)
|
|---|
| 149 | # define OS_CODE 10
|
|---|
| 150 | #endif
|
|---|
| 151 |
|
|---|
| 152 | #ifdef _BEOS_
|
|---|
| 153 | # define OS_CODE 16
|
|---|
| 154 | #endif
|
|---|
| 155 |
|
|---|
| 156 | #ifdef __TOS_OS400__
|
|---|
| 157 | # define OS_CODE 18
|
|---|
| 158 | #endif
|
|---|
| 159 |
|
|---|
| 160 | #ifdef __APPLE__
|
|---|
| 161 | # define OS_CODE 19
|
|---|
| 162 | #endif
|
|---|
| 163 |
|
|---|
| 164 | #if defined(__BORLANDC__) && !defined(MSDOS)
|
|---|
| 165 | #pragma warn -8004
|
|---|
| 166 | #pragma warn -8008
|
|---|
| 167 | #pragma warn -8066
|
|---|
| 168 | #endif
|
|---|
| 169 |
|
|---|
| 170 | /* provide prototypes for these when building zlib without LFS */
|
|---|
| 171 | #if !defined(_WIN32) && \
|
|---|
| 172 | (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
|
|---|
| 173 | ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off_t);
|
|---|
| 174 | ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off_t);
|
|---|
| 175 | ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off_t);
|
|---|
| 176 | #endif
|
|---|
| 177 |
|
|---|
| 178 | /* common defaults */
|
|---|
| 179 |
|
|---|
| 180 | #ifndef OS_CODE
|
|---|
| 181 | # define OS_CODE 3 /* assume Unix */
|
|---|
| 182 | #endif
|
|---|
| 183 |
|
|---|
| 184 | #ifndef F_OPEN
|
|---|
| 185 | # define F_OPEN(name, mode) fopen((name), (mode))
|
|---|
| 186 | #endif
|
|---|
| 187 |
|
|---|
| 188 | /* functions */
|
|---|
| 189 |
|
|---|
| 190 | #if defined(pyr) || defined(Z_SOLO)
|
|---|
| 191 | # define NO_MEMCPY
|
|---|
| 192 | #endif
|
|---|
| 193 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
|
|---|
| 194 | /* Use our own functions for small and medium model with MSC <= 5.0.
|
|---|
| 195 | * You may have to use the same strategy for Borland C (untested).
|
|---|
| 196 | * The __SC__ check is for Symantec.
|
|---|
| 197 | */
|
|---|
| 198 | # define NO_MEMCPY
|
|---|
| 199 | #endif
|
|---|
| 200 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
|
|---|
| 201 | # define HAVE_MEMCPY
|
|---|
| 202 | #endif
|
|---|
| 203 | #ifdef HAVE_MEMCPY
|
|---|
| 204 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
|
|---|
| 205 | # define zmemcpy _fmemcpy
|
|---|
| 206 | # define zmemcmp _fmemcmp
|
|---|
| 207 | # define zmemzero(dest, len) _fmemset(dest, 0, len)
|
|---|
| 208 | # else
|
|---|
| 209 | # define zmemcpy memcpy
|
|---|
| 210 | # define zmemcmp memcmp
|
|---|
| 211 | # define zmemzero(dest, len) memset(dest, 0, len)
|
|---|
| 212 | # endif
|
|---|
| 213 | #else
|
|---|
| 214 | void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len);
|
|---|
| 215 | int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len);
|
|---|
| 216 | void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len);
|
|---|
| 217 | #endif
|
|---|
| 218 |
|
|---|
| 219 | /* Diagnostic functions */
|
|---|
| 220 | #ifdef ZLIB_DEBUG
|
|---|
| 221 | # include <stdio.h>
|
|---|
| 222 | extern int ZLIB_INTERNAL z_verbose;
|
|---|
| 223 | extern void ZLIB_INTERNAL z_error(char *m);
|
|---|
| 224 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
|
|---|
| 225 | # define Trace(x) {if (z_verbose>=0) fprintf x ;}
|
|---|
| 226 | # define Tracev(x) {if (z_verbose>0) fprintf x ;}
|
|---|
| 227 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
|
|---|
| 228 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
|
|---|
| 229 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
|
|---|
| 230 | #else
|
|---|
| 231 | # if !defined(IPRT_NO_CRT) || !defined(Assert) /* VBox */
|
|---|
| 232 | # define Assert(cond,msg)
|
|---|
| 233 | # endif /* VBox */
|
|---|
| 234 | # define Trace(x)
|
|---|
| 235 | # define Tracev(x)
|
|---|
| 236 | # define Tracevv(x)
|
|---|
| 237 | # define Tracec(c,x)
|
|---|
| 238 | # define Tracecv(c,x)
|
|---|
| 239 | #endif
|
|---|
| 240 |
|
|---|
| 241 | #ifdef IPRT_NO_CRT /* VBox */
|
|---|
| 242 | # undef Assert /* VBox */
|
|---|
| 243 | # include <iprt/assert.h> /* VBox */
|
|---|
| 244 | # undef Assert /* VBox */
|
|---|
| 245 | # ifdef ZLIB_DEBUG /* VBox */
|
|---|
| 246 | # define Assert(cond, msg) AssertMsg(cond, (msg)) /* VBox */
|
|---|
| 247 | # else /* VBox */
|
|---|
| 248 | # define Assert(cond, msg) do {} while (0) /* VBox */
|
|---|
| 249 | # endif /* VBox */
|
|---|
| 250 | #endif /* VBox */
|
|---|
| 251 |
|
|---|
| 252 | #ifndef Z_SOLO
|
|---|
| 253 | voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items,
|
|---|
| 254 | unsigned size);
|
|---|
| 255 | void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr);
|
|---|
| 256 | #endif
|
|---|
| 257 |
|
|---|
| 258 | #define ZALLOC(strm, items, size) \
|
|---|
| 259 | (*((strm)->zalloc))((strm)->opaque, (items), (size))
|
|---|
| 260 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
|
|---|
| 261 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
|
|---|
| 262 |
|
|---|
| 263 | /* Reverse the bytes in a 32-bit value */
|
|---|
| 264 | #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
|
|---|
| 265 | (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
|
|---|
| 266 |
|
|---|
| 267 | #endif /* ZUTIL_H */
|
|---|
