1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2013 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 #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 #ifdef Z_SOLO 37 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 38 #endif 39 40 #ifndef local 41 # define local static 42 #endif 43 /* compile with -Dlocal if your debugger can't find static symbols */ 44 45 typedef unsigned char uch; 46 typedef uch FAR uchf; 47 typedef unsigned short ush; 48 typedef ush FAR ushf; 49 typedef unsigned long ulg; 50 51 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 52 /* (size given to avoid silly warnings with Visual C++) */ 53 54 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 55 56 #define ERR_RETURN(strm,err) \ 57 return (strm->msg = ERR_MSG(err), (err)) 58 /* To be used only when the state is known to be valid */ 59 60 /* common constants */ 61 62 #ifndef DEF_WBITS 63 # define DEF_WBITS MAX_WBITS 64 #endif 65 /* default windowBits for decompression. MAX_WBITS is for compression only */ 66 67 #if MAX_MEM_LEVEL >= 8 68 # define DEF_MEM_LEVEL 8 69 #else 70 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 71 #endif 72 /* default memLevel */ 73 74 #define STORED_BLOCK 0 75 #define STATIC_TREES 1 76 #define DYN_TREES 2 77 /* The three kinds of block type */ 78 79 #define MIN_MATCH 3 80 #define MAX_MATCH 258 81 /* The minimum and maximum match lengths */ 82 83 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 84 85 /* target dependencies */ 86 87 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 88 # define OS_CODE 0x00 89 # ifndef Z_SOLO 90 # if defined(__TURBOC__) || defined(__BORLANDC__) 91 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 92 /* Allow compilation with ANSI keywords only enabled */ 93 void _Cdecl farfree( void *block ); 94 void *_Cdecl farmalloc( unsigned long nbytes ); 95 # else 96 # include <alloc.h> 97 # endif 98 # else /* MSC or DJGPP */ 99 # include <malloc.h> 100 # endif 101 # endif 102 #endif 103 104 #ifdef AMIGA 105 # define OS_CODE 0x01 106 #endif 107 108 #if defined(VAXC) || defined(VMS) 109 # define OS_CODE 0x02 110 # define F_OPEN(name, mode) \ 111 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 112 #endif 113 114 #if defined(ATARI) || defined(atarist) 115 # define OS_CODE 0x05 116 #endif 117 118 #ifdef OS2 119 # define OS_CODE 0x06 120 # if defined(M_I86) && !defined(Z_SOLO) 121 # include <malloc.h> 122 # endif 123 #endif 124 125 #if defined(MACOS) || defined(TARGET_OS_MAC) 126 # define OS_CODE 0x07 127 # ifndef Z_SOLO 128 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 129 # include <unix.h> /* for fdopen */ 130 # else 131 # ifndef fdopen 132 # define fdopen(fd,mode) NULL /* No fdopen() */ 133 # endif 134 # endif 135 # endif 136 #endif 137 138 #ifdef TOPS20 139 # define OS_CODE 0x0a 140 #endif 141 142 #ifdef WIN32 143 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 144 # define OS_CODE 0x0b 145 # endif 146 #endif 147 148 #ifdef __50SERIES /* Prime/PRIMOS */ 149 # define OS_CODE 0x0f 150 #endif 151 152 #if defined(_BEOS_) || defined(RISCOS) 153 # define fdopen(fd,mode) NULL /* No fdopen() */ 154 #endif 155 156 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 157 # if defined(_WIN32_WCE) 158 # define fdopen(fd,mode) NULL /* No fdopen() */ 159 # ifndef _PTRDIFF_T_DEFINED 160 typedef int ptrdiff_t; 161 # define _PTRDIFF_T_DEFINED 162 # endif 163 # else 164 # define fdopen(fd,type) _fdopen(fd,type) 165 # endif 166 #endif 167 168 #if defined(__BORLANDC__) && !defined(MSDOS) 169 #pragma warn -8004 170 #pragma warn -8008 171 #pragma warn -8066 172 #endif 173 174 /* provide prototypes for these when building zlib without LFS */ 175 #if !defined(_WIN32) && \ 176 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 177 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 178 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 179 #endif 180 181 /* common defaults */ 182 183 #ifndef OS_CODE 184 # define OS_CODE 0x03 /* assume Unix */ 185 #endif 186 187 #ifndef F_OPEN 188 # define F_OPEN(name, mode) fopen((name), (mode)) 189 #endif 190 191 /* functions */ 192 193 #if defined(pyr) || defined(Z_SOLO) 194 # define NO_MEMCPY 195 #endif 196 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 197 /* Use our own functions for small and medium model with MSC <= 5.0. 198 * You may have to use the same strategy for Borland C (untested). 199 * The __SC__ check is for Symantec. 200 */ 201 # define NO_MEMCPY 202 #endif 203 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 204 # define HAVE_MEMCPY 205 #endif 206 #ifdef HAVE_MEMCPY 207 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 208 # define zmemcpy _fmemcpy 209 # define zmemcmp _fmemcmp 210 # define zmemzero(dest, len) _fmemset(dest, 0, len) 211 # else 212 # define zmemcpy memcpy 213 # define zmemcmp memcmp 214 # define zmemzero(dest, len) memset(dest, 0, len) 215 # endif 216 #else 217 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 218 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 219 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 220 #endif 221 222 /* Diagnostic functions */ 223 #ifdef DEBUG 224 # include <stdio.h> 225 extern int ZLIB_INTERNAL z_verbose; 226 extern void ZLIB_INTERNAL z_error OF((char *m)); 227 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 228 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 229 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 230 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 231 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 232 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 233 #else 234 # define Assert(cond,msg) 235 # define Trace(x) 236 # define Tracev(x) 237 # define Tracevv(x) 238 # define Tracec(c,x) 239 # define Tracecv(c,x) 240 #endif 241 242 #ifndef Z_SOLO 243 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 244 unsigned size)); 245 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 246 #endif 247 248 #define ZALLOC(strm, items, size) \ 249 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 250 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 251 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 252 253 /* Reverse the bytes in a 32-bit value */ 254 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 255 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 256 257 #ifdef __cplusplus 258 } 259 #endif 260 261 #endif /* ZUTIL_H */ 262