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 #ifdef NO_ERRNO_H 32 # ifdef _WIN32_WCE 33 /* The Microsoft C Run-Time Library for Windows CE doesn't have 34 * errno. We define it as a global variable to simplify porting. 35 * Its value is always 0 and should not be used. We rename it to 36 * avoid conflict with other libraries that use the same workaround. 37 */ 38 # define errno z_errno 39 # endif 40 extern int errno; 41 #else 42 # ifndef _WIN32_WCE 43 # include <errno.h> 44 # endif 45 #endif 46 47 #ifndef local 48 # define local static 49 #endif 50 /* compile with -Dlocal if your debugger can't find static symbols */ 51 52 typedef unsigned char uch; 53 typedef uch FAR uchf; 54 typedef unsigned short ush; 55 typedef ush FAR ushf; 56 typedef unsigned long ulg; 57 58 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 59 /* (size given to avoid silly warnings with Visual C++) */ 60 61 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 62 63 #define ERR_RETURN(strm,err) \ 64 return (strm->msg = (char*)ERR_MSG(err), (err)) 65 /* To be used only when the state is known to be valid */ 66 67 /* common constants */ 68 69 #ifndef DEF_WBITS 70 # define DEF_WBITS MAX_WBITS 71 #endif 72 /* default windowBits for decompression. MAX_WBITS is for compression only */ 73 74 #if MAX_MEM_LEVEL >= 8 75 # define DEF_MEM_LEVEL 8 76 #else 77 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 78 #endif 79 /* default memLevel */ 80 81 #define STORED_BLOCK 0 82 #define STATIC_TREES 1 83 #define DYN_TREES 2 84 /* The three kinds of block type */ 85 86 #define MIN_MATCH 3 87 #define MAX_MATCH 258 88 /* The minimum and maximum match lengths */ 89 90 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 91 92 /* target dependencies */ 93 94 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 95 # define OS_CODE 0x00 96 # if defined(__TURBOC__) || defined(__BORLANDC__) 97 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 98 /* Allow compilation with ANSI keywords only enabled */ 99 void _Cdecl farfree( void *block ); 100 void *_Cdecl farmalloc( unsigned long nbytes ); 101 # else 102 # include <alloc.h> 103 # endif 104 # else /* MSC or DJGPP */ 105 # include <malloc.h> 106 # endif 107 #endif 108 109 #ifdef AMIGA 110 # define OS_CODE 0x01 111 #endif 112 113 #if defined(VAXC) || defined(VMS) 114 # define OS_CODE 0x02 115 # define F_OPEN(name, mode) \ 116 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 117 #endif 118 119 #if defined(ATARI) || defined(atarist) 120 # define OS_CODE 0x05 121 #endif 122 123 #ifdef OS2 124 # define OS_CODE 0x06 125 # ifdef M_I86 126 # include <malloc.h> 127 # endif 128 #endif 129 130 #if defined(MACOS) || defined(TARGET_OS_MAC) 131 # define OS_CODE 0x07 132 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 133 # include <unix.h> /* for fdopen */ 134 # else 135 # ifndef fdopen 136 # define fdopen(fd,mode) NULL /* No fdopen() */ 137 # endif 138 # endif 139 #endif 140 141 #ifdef TOPS20 142 # define OS_CODE 0x0a 143 #endif 144 145 #ifdef WIN32 146 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 147 # define OS_CODE 0x0b 148 # endif 149 #endif 150 151 #ifdef __50SERIES /* Prime/PRIMOS */ 152 # define OS_CODE 0x0f 153 #endif 154 155 #if defined(_BEOS_) || defined(RISCOS) 156 # define fdopen(fd,mode) NULL /* No fdopen() */ 157 #endif 158 159 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 160 # if defined(_WIN32_WCE) 161 # define fdopen(fd,mode) NULL /* No fdopen() */ 162 # ifndef _PTRDIFF_T_DEFINED 163 typedef int ptrdiff_t; 164 # define _PTRDIFF_T_DEFINED 165 # endif 166 # else 167 # define fdopen(fd,type) _fdopen(fd,type) 168 # endif 169 #endif 170 171 #if defined(__BORLANDC__) 172 #pragma warn -8004 173 #pragma warn -8008 174 #pragma warn -8066 175 #endif 176 177 /* provide prototypes for these when building zlib without LFS */ 178 #if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0 179 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 180 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 181 #endif 182 183 /* common defaults */ 184 185 #ifndef OS_CODE 186 # define OS_CODE 0x03 /* assume Unix */ 187 #endif 188 189 #ifndef F_OPEN 190 # define F_OPEN(name, mode) fopen((name), (mode)) 191 #endif 192 193 /* functions */ 194 195 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 196 # ifndef HAVE_VSNPRINTF 197 # define HAVE_VSNPRINTF 198 # endif 199 #endif 200 #if defined(__CYGWIN__) 201 # ifndef HAVE_VSNPRINTF 202 # define HAVE_VSNPRINTF 203 # endif 204 #endif 205 #ifndef HAVE_VSNPRINTF 206 # ifdef MSDOS 207 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 208 but for now we just assume it doesn't. */ 209 # define NO_vsnprintf 210 # endif 211 # ifdef __TURBOC__ 212 # define NO_vsnprintf 213 # endif 214 # ifdef WIN32 215 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 216 # if !defined(vsnprintf) && !defined(NO_vsnprintf) 217 # if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 ) 218 # define vsnprintf _vsnprintf 219 # endif 220 # endif 221 # endif 222 # ifdef __SASC 223 # define NO_vsnprintf 224 # endif 225 #endif 226 #ifdef VMS 227 # define NO_vsnprintf 228 #endif 229 230 #if defined(pyr) 231 # define NO_MEMCPY 232 #endif 233 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 234 /* Use our own functions for small and medium model with MSC <= 5.0. 235 * You may have to use the same strategy for Borland C (untested). 236 * The __SC__ check is for Symantec. 237 */ 238 # define NO_MEMCPY 239 #endif 240 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 241 # define HAVE_MEMCPY 242 #endif 243 #ifdef HAVE_MEMCPY 244 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 245 # define zmemcpy _fmemcpy 246 # define zmemcmp _fmemcmp 247 # define zmemzero(dest, len) _fmemset(dest, 0, len) 248 # else 249 # define zmemcpy memcpy 250 # define zmemcmp memcmp 251 # define zmemzero(dest, len) memset(dest, 0, len) 252 # endif 253 #else 254 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 255 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 256 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 257 #endif 258 259 /* Diagnostic functions */ 260 #ifdef DEBUG 261 # include <stdio.h> 262 extern int ZLIB_INTERNAL z_verbose; 263 extern void ZLIB_INTERNAL z_error OF((char *m)); 264 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 265 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 266 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 267 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 268 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 269 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 270 #else 271 # define Assert(cond,msg) 272 # define Trace(x) 273 # define Tracev(x) 274 # define Tracevv(x) 275 # define Tracec(c,x) 276 # define Tracecv(c,x) 277 #endif 278 279 280 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 281 unsigned size)); 282 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 283 284 #define ZALLOC(strm, items, size) \ 285 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 286 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 287 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 288 289 #endif /* ZUTIL_H */ 290
