zutil.h revision 1.1
1 /* $NetBSD: zutil.h,v 1.1 2006/01/14 20:10:42 christos Exp $ */ 2 3 /* zutil.h -- internal interface and configuration of the compression library 4 * Copyright (C) 1995-2005 Jean-loup Gailly. 5 * For conditions of distribution and use, see copyright notice in zlib.h 6 */ 7 8 /* WARNING: this file should *not* be used by applications. It is 9 part of the implementation of the compression library and is 10 subject to change. Applications should only use zlib.h. 11 */ 12 13 /* @(#) Id */ 14 15 #ifndef ZUTIL_H 16 #define ZUTIL_H 17 18 #define ZLIB_INTERNAL 19 #include "zlib.h" 20 21 #ifdef STDC 22 # ifndef _WIN32_WCE 23 # include <stddef.h> 24 # endif 25 # include <string.h> 26 # include <stdlib.h> 27 #endif 28 #ifdef NO_ERRNO_H 29 # ifdef _WIN32_WCE 30 /* The Microsoft C Run-Time Library for Windows CE doesn't have 31 * errno. We define it as a global variable to simplify porting. 32 * Its value is always 0 and should not be used. We rename it to 33 * avoid conflict with other libraries that use the same workaround. 34 */ 35 # define errno z_errno 36 # endif 37 extern int errno; 38 #else 39 # ifndef _WIN32_WCE 40 # include <errno.h> 41 # endif 42 #endif 43 44 #ifndef local 45 # define local static 46 #endif 47 /* compile with -Dlocal if your debugger can't find static symbols */ 48 49 typedef unsigned char uch; 50 typedef uch FAR uchf; 51 typedef unsigned short ush; 52 typedef ush FAR ushf; 53 typedef unsigned long ulg; 54 55 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 56 /* (size given to avoid silly warnings with Visual C++) */ 57 58 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 59 60 #define ERR_RETURN(strm,err) \ 61 return (strm->msg = (char*)ERR_MSG(err), (err)) 62 /* To be used only when the state is known to be valid */ 63 64 /* common constants */ 65 66 #ifndef DEF_WBITS 67 # define DEF_WBITS MAX_WBITS 68 #endif 69 /* default windowBits for decompression. MAX_WBITS is for compression only */ 70 71 #if MAX_MEM_LEVEL >= 8 72 # define DEF_MEM_LEVEL 8 73 #else 74 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 75 #endif 76 /* default memLevel */ 77 78 #define STORED_BLOCK 0 79 #define STATIC_TREES 1 80 #define DYN_TREES 2 81 /* The three kinds of block type */ 82 83 #define MIN_MATCH 3 84 #define MAX_MATCH 258 85 /* The minimum and maximum match lengths */ 86 87 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 88 89 /* target dependencies */ 90 91 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 92 # define OS_CODE 0x00 93 # if defined(__TURBOC__) || defined(__BORLANDC__) 94 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 95 /* Allow compilation with ANSI keywords only enabled */ 96 void _Cdecl farfree( void *block ); 97 void *_Cdecl farmalloc( unsigned long nbytes ); 98 # else 99 # include <alloc.h> 100 # endif 101 # else /* MSC or DJGPP */ 102 # include <malloc.h> 103 # endif 104 #endif 105 106 #ifdef AMIGA 107 # define OS_CODE 0x01 108 #endif 109 110 #if defined(VAXC) || defined(VMS) 111 # define OS_CODE 0x02 112 # define F_OPEN(name, mode) \ 113 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 114 #endif 115 116 #if defined(ATARI) || defined(atarist) 117 # define OS_CODE 0x05 118 #endif 119 120 #ifdef OS2 121 # define OS_CODE 0x06 122 # ifdef M_I86 123 #include <malloc.h> 124 # endif 125 #endif 126 127 #if defined(MACOS) || defined(TARGET_OS_MAC) 128 # define OS_CODE 0x07 129 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 130 # include <unix.h> /* for fdopen */ 131 # else 132 # ifndef fdopen 133 # define fdopen(fd,mode) NULL /* No fdopen() */ 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)) 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 /* 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 # define vsnprintf _vsnprintf 203 # endif 204 # endif 205 # ifdef __SASC 206 # define NO_vsnprintf 207 # endif 208 #endif 209 #ifdef VMS 210 # define NO_vsnprintf 211 #endif 212 213 #if defined(pyr) 214 # define NO_MEMCPY 215 #endif 216 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 217 /* Use our own functions for small and medium model with MSC <= 5.0. 218 * You may have to use the same strategy for Borland C (untested). 219 * The __SC__ check is for Symantec. 220 */ 221 # define NO_MEMCPY 222 #endif 223 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 224 # define HAVE_MEMCPY 225 #endif 226 #ifdef HAVE_MEMCPY 227 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 228 # define zmemcpy _fmemcpy 229 # define zmemcmp _fmemcmp 230 # define zmemzero(dest, len) _fmemset(dest, 0, len) 231 # else 232 # define zmemcpy memcpy 233 # define zmemcmp memcmp 234 # define zmemzero(dest, len) memset(dest, 0, len) 235 # endif 236 #else 237 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 238 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 239 extern void zmemzero OF((Bytef* dest, uInt len)); 240 #endif 241 242 /* Diagnostic functions */ 243 #ifdef DEBUG 244 # include <stdio.h> 245 extern int z_verbose; 246 extern void z_error OF((char *m)); 247 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 248 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 249 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 250 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 251 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 252 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 253 #else 254 # define Assert(cond,msg) 255 # define Trace(x) 256 # define Tracev(x) 257 # define Tracevv(x) 258 # define Tracec(c,x) 259 # define Tracecv(c,x) 260 #endif 261 262 263 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 264 void zcfree OF((voidpf opaque, voidpf ptr)); 265 266 #define ZALLOC(strm, items, size) \ 267 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 268 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 269 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 270 271 #endif /* ZUTIL_H */ 272
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