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
