1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2003 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: zutil.h,v 1.1.1.1 2005/04/24 21:39:38 giles Exp $ */ 12 13 #ifndef ZUTIL_H 14 #define ZUTIL_H 15 16 #define ZLIB_INTERNAL 17 #include "zlib.h" 18 19 #ifdef STDC 20 # include <stddef.h> 21 # include <string.h> 22 # include <stdlib.h> 23 #endif 24 #ifdef NO_ERRNO_H 25 extern int errno; 26 #else 27 # include <errno.h> 28 #endif 29 30 #ifndef local 31 # define local static 32 #endif 33 /* compile with -Dlocal if your debugger can't find static symbols */ 34 35 typedef unsigned char uch; 36 typedef uch FAR uchf; 37 typedef unsigned short ush; 38 typedef ush FAR ushf; 39 typedef unsigned long ulg; 40 41 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 42 /* (size given to avoid silly warnings with Visual C++) */ 43 44 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 45 46 #define ERR_RETURN(strm,err) \ 47 return (strm->msg = (char*)ERR_MSG(err), (err)) 48 /* To be used only when the state is known to be valid */ 49 50 /* common constants */ 51 52 #ifndef DEF_WBITS 53 # define DEF_WBITS MAX_WBITS 54 #endif 55 /* default windowBits for decompression. MAX_WBITS is for compression only */ 56 57 #if MAX_MEM_LEVEL >= 8 58 # define DEF_MEM_LEVEL 8 59 #else 60 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 61 #endif 62 /* default memLevel */ 63 64 #define STORED_BLOCK 0 65 #define STATIC_TREES 1 66 #define DYN_TREES 2 67 /* The three kinds of block type */ 68 69 #define MIN_MATCH 3 70 #define MAX_MATCH 258 71 /* The minimum and maximum match lengths */ 72 73 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 74 75 /* target dependencies */ 76 77 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 78 # define OS_CODE 0x00 79 # if defined(__TURBOC__) || defined(__BORLANDC__) 80 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 81 /* Allow compilation with ANSI keywords only enabled */ 82 void _Cdecl farfree( void *block ); 83 void *_Cdecl farmalloc( unsigned long nbytes ); 84 # else 85 # include <alloc.h> 86 # endif 87 # else /* MSC or DJGPP */ 88 # include <malloc.h> 89 # endif 90 #endif 91 92 #ifdef AMIGA 93 # define OS_CODE 0x01 94 #endif 95 96 #if defined(VAXC) || defined(VMS) 97 # define OS_CODE 0x02 98 # define F_OPEN(name, mode) \ 99 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 100 #endif 101 102 #if defined(ATARI) || defined(atarist) 103 # define OS_CODE 0x05 104 #endif 105 106 #ifdef OS2 107 # define OS_CODE 0x06 108 #endif 109 110 #if defined(MACOS) || defined(TARGET_OS_MAC) 111 # define OS_CODE 0x07 112 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 113 # include <unix.h> /* for fdopen */ 114 # else 115 # ifndef fdopen 116 # define fdopen(fd,mode) NULL /* No fdopen() */ 117 # endif 118 # endif 119 #endif 120 121 #ifdef TOPS20 122 # define OS_CODE 0x0a 123 #endif 124 125 #ifdef WIN32 126 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 127 # define OS_CODE 0x0b 128 # endif 129 #endif 130 131 #ifdef __50SERIES /* Prime/PRIMOS */ 132 # define OS_CODE 0x0f 133 #endif 134 135 #if defined(_BEOS_) || defined(RISCOS) 136 # define fdopen(fd,mode) NULL /* No fdopen() */ 137 #endif 138 139 #if (defined(_MSC_VER) && (_MSC_VER > 600)) 140 # if defined(_WIN32_WCE) 141 # define fdopen(fd,mode) NULL /* No fdopen() */ 142 # ifndef _PTRDIFF_T_DEFINED 143 typedef int ptrdiff_t; 144 # define _PTRDIFF_T_DEFINED 145 # endif 146 # else 147 # define fdopen(fd,type) _fdopen(fd,type) 148 # endif 149 #endif 150 151 /* common defaults */ 152 153 #ifndef OS_CODE 154 # define OS_CODE 0x03 /* assume Unix */ 155 #endif 156 157 #ifndef F_OPEN 158 # define F_OPEN(name, mode) fopen((name), (mode)) 159 #endif 160 161 /* functions */ 162 163 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 164 # ifndef HAVE_VSNPRINTF 165 # define HAVE_VSNPRINTF 166 # endif 167 #endif 168 #if defined(__CYGWIN__) 169 # ifndef HAVE_VSNPRINTF 170 # define HAVE_VSNPRINTF 171 # endif 172 #endif 173 #ifndef HAVE_VSNPRINTF 174 # ifdef MSDOS 175 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 176 but for now we just assume it doesn't. */ 177 # define NO_vsnprintf 178 # endif 179 # ifdef __TURBOC__ 180 # define NO_vsnprintf 181 # endif 182 # ifdef WIN32 183 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 184 # if !defined(vsnprintf) && !defined(NO_vsnprintf) 185 # define vsnprintf _vsnprintf 186 # endif 187 # endif 188 # ifdef __SASC 189 # define NO_vsnprintf 190 # endif 191 #endif 192 #ifdef VMS 193 # define NO_vsnprintf 194 #endif 195 196 #ifdef HAVE_STRERROR 197 # ifndef VMS 198 extern char *strerror OF((int)); 199 # endif 200 # define zstrerror(errnum) strerror(errnum) 201 #else 202 # define zstrerror(errnum) "" 203 #endif 204 205 #if defined(pyr) 206 # define NO_MEMCPY 207 #endif 208 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 209 /* Use our own functions for small and medium model with MSC <= 5.0. 210 * You may have to use the same strategy for Borland C (untested). 211 * The __SC__ check is for Symantec. 212 */ 213 # define NO_MEMCPY 214 #endif 215 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 216 # define HAVE_MEMCPY 217 #endif 218 #ifdef HAVE_MEMCPY 219 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 220 # define zmemcpy _fmemcpy 221 # define zmemcmp _fmemcmp 222 # define zmemzero(dest, len) _fmemset(dest, 0, len) 223 # else 224 # define zmemcpy memcpy 225 # define zmemcmp memcmp 226 # define zmemzero(dest, len) memset(dest, 0, len) 227 # endif 228 #else 229 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 230 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 231 extern void zmemzero OF((Bytef* dest, uInt len)); 232 #endif 233 234 /* Diagnostic functions */ 235 #ifdef DEBUG 236 # include <stdio.h> 237 extern int z_verbose; 238 extern void z_error OF((char *m)); 239 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 240 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 241 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 242 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 243 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 244 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 245 #else 246 # define Assert(cond,msg) 247 # define Trace(x) 248 # define Tracev(x) 249 # define Tracevv(x) 250 # define Tracec(c,x) 251 # define Tracecv(c,x) 252 #endif 253 254 255 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 256 void zcfree OF((voidpf opaque, voidpf ptr)); 257 258 #define ZALLOC(strm, items, size) \ 259 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 260 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 261 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 262 263 #endif /* ZUTIL_H */ 264