1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2022 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 __cplusplus 17 extern "C" { 18 #endif 19 20 #ifdef HAVE_HIDDEN 21 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 22 #else 23 # define ZLIB_INTERNAL 24 #endif 25 26 #include "zlib.h" 27 28 #if defined(STDC) && !defined(Z_SOLO) 29 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 30 # include <stddef.h> 31 # endif 32 # include <string.h> 33 # include <stdlib.h> 34 #endif 35 36 #ifndef local 37 # define local static 38 #endif 39 /* since "static" is used to mean two completely different things in C, we 40 define "local" for the non-static meaning of "static", for readability 41 (compile with -Dlocal if your debugger can't find static symbols) */ 42 43 typedef unsigned char uch; 44 typedef uch FAR uchf; 45 typedef unsigned short ush; 46 typedef ush FAR ushf; 47 typedef unsigned long ulg; 48 49 #if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC) 50 # include <limits.h> 51 # if (ULONG_MAX == 0xffffffffffffffff) 52 # define Z_U8 unsigned long 53 # elif (ULLONG_MAX == 0xffffffffffffffff) 54 # define Z_U8 unsigned long long 55 # elif (UINT_MAX == 0xffffffffffffffff) 56 # define Z_U8 unsigned 57 # endif 58 #endif 59 60 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 61 /* (size given to avoid silly warnings with Visual C++) */ 62 63 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 64 65 #define ERR_RETURN(strm,err) \ 66 return (strm->msg = ERR_MSG(err), (err)) 67 /* To be used only when the state is known to be valid */ 68 69 /* common constants */ 70 71 #ifndef DEF_WBITS 72 # define DEF_WBITS MAX_WBITS 73 #endif 74 /* default windowBits for decompression. MAX_WBITS is for compression only */ 75 76 #if MAX_MEM_LEVEL >= 8 77 # define DEF_MEM_LEVEL 8 78 #else 79 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 80 #endif 81 /* default memLevel */ 82 83 #define STORED_BLOCK 0 84 #define STATIC_TREES 1 85 #define DYN_TREES 2 86 /* The three kinds of block type */ 87 88 #define MIN_MATCH 3 89 #define MAX_MATCH 258 90 /* The minimum and maximum match lengths */ 91 92 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 93 94 /* target dependencies */ 95 96 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 97 # define OS_CODE 0x00 98 # ifndef Z_SOLO 99 # if defined(__TURBOC__) || defined(__BORLANDC__) 100 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 101 /* Allow compilation with ANSI keywords only enabled */ 102 void _Cdecl farfree( void *block ); 103 void *_Cdecl farmalloc( unsigned long nbytes ); 104 # else 105 # include <alloc.h> 106 # endif 107 # else /* MSC or DJGPP */ 108 # include <malloc.h> 109 # endif 110 # endif 111 #endif 112 113 #ifdef AMIGA 114 # define OS_CODE 1 115 #endif 116 117 #if defined(VAXC) || defined(VMS) 118 # define OS_CODE 2 119 # define F_OPEN(name, mode) \ 120 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 121 #endif 122 123 #ifdef __370__ 124 # if __TARGET_LIB__ < 0x20000000 125 # define OS_CODE 4 126 # elif __TARGET_LIB__ < 0x40000000 127 # define OS_CODE 11 128 # else 129 # define OS_CODE 8 130 # endif 131 #endif 132 133 #if defined(ATARI) || defined(atarist) 134 # define OS_CODE 5 135 #endif 136 137 #ifdef OS2 138 # define OS_CODE 6 139 # if defined(M_I86) && !defined(Z_SOLO) 140 # include <malloc.h> 141 # endif 142 #endif 143 144 #if defined(MACOS) || defined(TARGET_OS_MAC) 145 # define OS_CODE 7 146 # ifndef Z_SOLO 147 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 148 # include <unix.h> /* for fdopen */ 149 # else 150 # ifndef fdopen 151 # define fdopen(fd,mode) NULL /* No fdopen() */ 152 # endif 153 # endif 154 # endif 155 #endif 156 157 #ifdef __acorn 158 # define OS_CODE 13 159 #endif 160 161 #if defined(WIN32) && !defined(__CYGWIN__) 162 # define OS_CODE 10 163 #endif 164 165 #ifdef _BEOS_ 166 # define OS_CODE 16 167 #endif 168 169 #ifdef __TOS_OS400__ 170 # define OS_CODE 18 171 #endif 172 173 #ifdef __APPLE__ 174 # define OS_CODE 19 175 #endif 176 177 #if defined(_BEOS_) || defined(RISCOS) 178 # define fdopen(fd,mode) NULL /* No fdopen() */ 179 #endif 180 181 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 182 # if defined(_WIN32_WCE) 183 # define fdopen(fd,mode) NULL /* No fdopen() */ 184 # else 185 # define fdopen(fd,type) _fdopen(fd,type) 186 # endif 187 #endif 188 189 #if defined(__BORLANDC__) && !defined(MSDOS) 190 #pragma warn -8004 191 #pragma warn -8008 192 #pragma warn -8066 193 #endif 194 195 /* provide prototypes for these when building zlib without LFS */ 196 #if !defined(_WIN32) && \ 197 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 198 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 199 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 200 #endif 201 202 /* common defaults */ 203 204 #ifndef OS_CODE 205 # define OS_CODE 3 /* assume Unix */ 206 #endif 207 208 #ifndef F_OPEN 209 # define F_OPEN(name, mode) fopen((name), (mode)) 210 #endif 211 212 /* functions */ 213 214 #if defined(pyr) || defined(Z_SOLO) 215 # define NO_MEMCPY 216 #endif 217 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 218 /* Use our own functions for small and medium model with MSC <= 5.0. 219 * You may have to use the same strategy for Borland C (untested). 220 * The __SC__ check is for Symantec. 221 */ 222 # define NO_MEMCPY 223 #endif 224 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 225 # define HAVE_MEMCPY 226 #endif 227 #ifdef HAVE_MEMCPY 228 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 229 # define zmemcpy _fmemcpy 230 # define zmemcmp _fmemcmp 231 # define zmemzero(dest, len) _fmemset(dest, 0, len) 232 # else 233 # define zmemcpy memcpy 234 # define zmemcmp memcmp 235 # define zmemzero(dest, len) memset(dest, 0, len) 236 # endif 237 #else 238 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 239 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 240 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 241 #endif 242 243 /* Diagnostic functions */ 244 #ifdef ZLIB_DEBUG 245 # include <stdio.h> 246 extern int ZLIB_INTERNAL z_verbose; 247 extern void ZLIB_INTERNAL z_error OF((char *m)); 248 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 249 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 250 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 251 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 252 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 253 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 254 #else 255 # define Assert(cond,msg) 256 # define Trace(x) 257 # define Tracev(x) 258 # define Tracevv(x) 259 # define Tracec(c,x) 260 # define Tracecv(c,x) 261 #endif 262 263 #ifndef Z_SOLO 264 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 265 unsigned size)); 266 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 267 #endif 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 /* Reverse the bytes in a 32-bit value */ 275 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 276 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 277 278 #ifdef __cplusplus 279 } 280 #endif 281 #endif /* ZUTIL_H */ 282