| 1 | /* zutil.h -- internal interface and configuration of the compression library␊ |
| 2 | * Copyright (C) 1995-2010 Jean-loup Gailly.␊ |
| 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 | #if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)␊ |
| 17 | # define ZLIB_INTERNAL __attribute__((visibility ("hidden")))␊ |
| 18 | #else␊ |
| 19 | # define ZLIB_INTERNAL␊ |
| 20 | #endif␊ |
| 21 | ␊ |
| 22 | #include "zlib.h"␊ |
| 23 | ␊ |
| 24 | #ifdef STDC␊ |
| 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 | /* compile with -Dlocal if your debugger can't find static symbols */␊ |
| 36 | ␊ |
| 37 | typedef unsigned char uch;␊ |
| 38 | typedef uch FAR uchf;␊ |
| 39 | typedef unsigned short ush;␊ |
| 40 | typedef ush FAR ushf;␊ |
| 41 | typedef unsigned long ulg;␊ |
| 42 | ␊ |
| 43 | extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */␊ |
| 44 | /* (size given to avoid silly warnings with Visual C++) */␊ |
| 45 | ␊ |
| 46 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]␊ |
| 47 | ␊ |
| 48 | #define ERR_RETURN(strm,err) \␊ |
| 49 | return (strm->msg = (char*)ERR_MSG(err), (err))␊ |
| 50 | /* To be used only when the state is known to be valid */␊ |
| 51 | ␊ |
| 52 | /* common constants */␊ |
| 53 | ␊ |
| 54 | #ifndef DEF_WBITS␊ |
| 55 | # define DEF_WBITS MAX_WBITS␊ |
| 56 | #endif␊ |
| 57 | /* default windowBits for decompression. MAX_WBITS is for compression only */␊ |
| 58 | ␊ |
| 59 | #if MAX_MEM_LEVEL >= 8␊ |
| 60 | # define DEF_MEM_LEVEL 8␊ |
| 61 | #else␊ |
| 62 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL␊ |
| 63 | #endif␊ |
| 64 | /* default memLevel */␊ |
| 65 | ␊ |
| 66 | #define STORED_BLOCK 0␊ |
| 67 | #define STATIC_TREES 1␊ |
| 68 | #define DYN_TREES 2␊ |
| 69 | /* The three kinds of block type */␊ |
| 70 | ␊ |
| 71 | #define MIN_MATCH 3␊ |
| 72 | #define MAX_MATCH 258␊ |
| 73 | /* The minimum and maximum match lengths */␊ |
| 74 | ␊ |
| 75 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */␊ |
| 76 | ␊ |
| 77 | /* target dependencies */␊ |
| 78 | ␊ |
| 79 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))␊ |
| 80 | # define OS_CODE 0x00␊ |
| 81 | # if defined(__TURBOC__) || defined(__BORLANDC__)␊ |
| 82 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))␊ |
| 83 | /* Allow compilation with ANSI keywords only enabled */␊ |
| 84 | void _Cdecl farfree( void *block );␊ |
| 85 | void *_Cdecl farmalloc( unsigned long nbytes );␊ |
| 86 | # else␊ |
| 87 | # include <alloc.h>␊ |
| 88 | # endif␊ |
| 89 | # else /* MSC or DJGPP */␊ |
| 90 | # include <malloc.h>␊ |
| 91 | # endif␊ |
| 92 | #endif␊ |
| 93 | ␊ |
| 94 | #ifdef AMIGA␊ |
| 95 | # define OS_CODE 0x01␊ |
| 96 | #endif␊ |
| 97 | ␊ |
| 98 | #if defined(VAXC) || defined(VMS)␊ |
| 99 | # define OS_CODE 0x02␊ |
| 100 | # define F_OPEN(name, mode) \␊ |
| 101 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")␊ |
| 102 | #endif␊ |
| 103 | ␊ |
| 104 | #if defined(ATARI) || defined(atarist)␊ |
| 105 | # define OS_CODE 0x05␊ |
| 106 | #endif␊ |
| 107 | ␊ |
| 108 | #ifdef OS2␊ |
| 109 | # define OS_CODE 0x06␊ |
| 110 | # ifdef M_I86␊ |
| 111 | //# include <malloc.h>␊ |
| 112 | # endif␊ |
| 113 | #endif␊ |
| 114 | ␊ |
| 115 | #if defined(MACOS) || defined(TARGET_OS_MAC)␊ |
| 116 | # define OS_CODE 0x07␊ |
| 117 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os␊ |
| 118 | # include <unix.h> /* for fdopen */␊ |
| 119 | # else␊ |
| 120 | # ifndef fdopen␊ |
| 121 | # define fdopen(fd,mode) NULL /* No fdopen() */␊ |
| 122 | # endif␊ |
| 123 | # endif␊ |
| 124 | #endif␊ |
| 125 | ␊ |
| 126 | #ifdef TOPS20␊ |
| 127 | # define OS_CODE 0x0a␊ |
| 128 | #endif␊ |
| 129 | ␊ |
| 130 | #ifdef WIN32␊ |
| 131 | # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */␊ |
| 132 | # define OS_CODE 0x0b␊ |
| 133 | # endif␊ |
| 134 | #endif␊ |
| 135 | ␊ |
| 136 | #ifdef __50SERIES /* Prime/PRIMOS */␊ |
| 137 | # define OS_CODE 0x0f␊ |
| 138 | #endif␊ |
| 139 | ␊ |
| 140 | #if defined(_BEOS_) || defined(RISCOS)␊ |
| 141 | # define fdopen(fd,mode) NULL /* No fdopen() */␊ |
| 142 | #endif␊ |
| 143 | ␊ |
| 144 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX␊ |
| 145 | # if defined(_WIN32_WCE)␊ |
| 146 | # define fdopen(fd,mode) NULL /* No fdopen() */␊ |
| 147 | # ifndef _PTRDIFF_T_DEFINED␊ |
| 148 | typedef int ptrdiff_t;␊ |
| 149 | # define _PTRDIFF_T_DEFINED␊ |
| 150 | # endif␊ |
| 151 | # else␊ |
| 152 | # define fdopen(fd,type) _fdopen(fd,type)␊ |
| 153 | # endif␊ |
| 154 | #endif␊ |
| 155 | ␊ |
| 156 | #if defined(__BORLANDC__)␊ |
| 157 | #pragma warn -8004␊ |
| 158 | #pragma warn -8008␊ |
| 159 | #pragma warn -8066␊ |
| 160 | #endif␊ |
| 161 | ␊ |
| 162 | /* provide prototypes for these when building zlib without LFS */␊ |
| 163 | #if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0␊ |
| 164 | ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));␊ |
| 165 | ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));␊ |
| 166 | #endif␊ |
| 167 | ␊ |
| 168 | /* common defaults */␊ |
| 169 | ␊ |
| 170 | #ifndef OS_CODE␊ |
| 171 | # define OS_CODE 0x03 /* assume Unix */␊ |
| 172 | #endif␊ |
| 173 | ␊ |
| 174 | #ifndef F_OPEN␊ |
| 175 | # define F_OPEN(name, mode) fopen((name), (mode))␊ |
| 176 | #endif␊ |
| 177 | ␊ |
| 178 | /* functions */␊ |
| 179 | ␊ |
| 180 | #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)␊ |
| 181 | # ifndef HAVE_VSNPRINTF␊ |
| 182 | # define HAVE_VSNPRINTF␊ |
| 183 | # endif␊ |
| 184 | #endif␊ |
| 185 | #if defined(__CYGWIN__)␊ |
| 186 | # ifndef HAVE_VSNPRINTF␊ |
| 187 | # define HAVE_VSNPRINTF␊ |
| 188 | # endif␊ |
| 189 | #endif␊ |
| 190 | #ifndef HAVE_VSNPRINTF␊ |
| 191 | # ifdef MSDOS␊ |
| 192 | /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),␊ |
| 193 | but for now we just assume it doesn't. */␊ |
| 194 | # define NO_vsnprintf␊ |
| 195 | # endif␊ |
| 196 | # ifdef __TURBOC__␊ |
| 197 | # define NO_vsnprintf␊ |
| 198 | # endif␊ |
| 199 | # ifdef WIN32␊ |
| 200 | /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */␊ |
| 201 | # if !defined(vsnprintf) && !defined(NO_vsnprintf)␊ |
| 202 | # if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )␊ |
| 203 | # define vsnprintf _vsnprintf␊ |
| 204 | # endif␊ |
| 205 | # endif␊ |
| 206 | # endif␊ |
| 207 | # ifdef __SASC␊ |
| 208 | # define NO_vsnprintf␊ |
| 209 | # endif␊ |
| 210 | #endif␊ |
| 211 | #ifdef VMS␊ |
| 212 | # define NO_vsnprintf␊ |
| 213 | #endif␊ |
| 214 | ␊ |
| 215 | #if defined(pyr)␊ |
| 216 | # define NO_MEMCPY␊ |
| 217 | #endif␊ |
| 218 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)␊ |
| 219 | /* Use our own functions for small and medium model with MSC <= 5.0.␊ |
| 220 | * You may have to use the same strategy for Borland C (untested).␊ |
| 221 | * The __SC__ check is for Symantec.␊ |
| 222 | */␊ |
| 223 | # define NO_MEMCPY␊ |
| 224 | #endif␊ |
| 225 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)␊ |
| 226 | # define HAVE_MEMCPY␊ |
| 227 | #endif␊ |
| 228 | #ifdef HAVE_MEMCPY␊ |
| 229 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */␊ |
| 230 | # define zmemcpy _fmemcpy␊ |
| 231 | # define zmemcmp _fmemcmp␊ |
| 232 | # define zmemzero(dest, len) _fmemset(dest, 0, len)␊ |
| 233 | # else␊ |
| 234 | # define zmemcpy memcpy␊ |
| 235 | # define zmemcmp memcmp␊ |
| 236 | # define zmemzero(dest, len) memset(dest, 0, len)␊ |
| 237 | # endif␊ |
| 238 | #else␊ |
| 239 | void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));␊ |
| 240 | int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));␊ |
| 241 | void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));␊ |
| 242 | #endif␊ |
| 243 | ␊ |
| 244 | /* Diagnostic functions */␊ |
| 245 | #ifdef DEBUG␊ |
| 246 | # include <stdio.h>␊ |
| 247 | extern int ZLIB_INTERNAL z_verbose;␊ |
| 248 | extern void ZLIB_INTERNAL z_error OF((char *m));␊ |
| 249 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);}␊ |
| 250 | # define Trace(x) {if (z_verbose>=0) fprintf x ;}␊ |
| 251 | # define Tracev(x) {if (z_verbose>0) fprintf x ;}␊ |
| 252 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;}␊ |
| 253 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}␊ |
| 254 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}␊ |
| 255 | #else␊ |
| 256 | # define Assert(cond,msg)␊ |
| 257 | # define Trace(x)␊ |
| 258 | # define Tracev(x)␊ |
| 259 | # define Tracevv(x)␊ |
| 260 | # define Tracec(c,x)␊ |
| 261 | # define Tracecv(c,x)␊ |
| 262 | #endif␊ |
| 263 | ␊ |
| 264 | ␊ |
| 265 | voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,␊ |
| 266 | unsigned size));␊ |
| 267 | void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));␊ |
| 268 | ␊ |
| 269 | #define ZALLOC(strm, items, size) \␊ |
| 270 | (*((strm)->zalloc))((strm)->opaque, (items), (size))␊ |
| 271 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))␊ |
| 272 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}␊ |
| 273 | ␊ |
| 274 | #endif /* ZUTIL_H */␊ |
| 275 | |
