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 # define Assert(cond,msg) 232 # define Trace(x) 233 # define Tracev(x) 234 # define Tracevv(x) 235 # define Tracec(c,x) 236 # define Tracecv(c,x) 237 #endif 238 239 #if !defined(Z_SOLO) || defined(_KERNEL) 240 voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, 241 unsigned size); 242 void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr); 243 #endif 244 245 #define ZALLOC(strm, items, size) \ 246 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 247 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 248 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 249 250 /* Reverse the bytes in a 32-bit value */ 251 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 252 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 253 254 #endif /* ZUTIL_H */ 255