1 /* $OpenBSD: zutil.h,v 1.17 2006/11/29 10:37:03 mickey Exp $ */ 2 /* zutil.h -- internal interface and configuration of the compression library 3 * Copyright (C) 1995-2005 Jean-loup Gailly. 4 * For conditions of distribution and use, see copyright notice in zlib.h 5 */ 6 7 /* WARNING: this file should *not* be used by applications. It is 8 part of the implementation of the compression library and is 9 subject to change. Applications should only use zlib.h. 10 */ 11 12 13 #ifndef ZUTIL_H 14 #define ZUTIL_H 15 16 #define ZLIB_INTERNAL 17 #include "zlib.h" 18 19 #ifdef _STANDALONE 20 #include <lib/libsa/stand.h> 21 #else 22 #ifdef STDC 23 # ifndef _WIN32_WCE 24 # include <stddef.h> 25 # endif 26 # include <string.h> 27 # include <stdlib.h> 28 #endif 29 #ifdef NO_ERRNO_H 30 # ifdef _WIN32_WCE 31 /* The Microsoft C Run-Time Library for Windows CE doesn't have 32 * errno. We define it as a global variable to simplify porting. 33 * Its value is always 0 and should not be used. We rename it to 34 * avoid conflict with other libraries that use the same workaround. 35 */ 36 # define errno z_errno 37 # endif 38 extern int errno; 39 #else 40 # ifndef _WIN32_WCE 41 # include <errno.h> 42 # endif 43 #endif 44 #endif 45 46 #ifndef local 47 # define local static 48 #endif 49 /* compile with -Dlocal if your debugger can't find static symbols */ 50 51 typedef unsigned char uch; 52 typedef uch FAR uchf; 53 typedef unsigned short ush; 54 typedef ush FAR ushf; 55 typedef unsigned long ulg; 56 57 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 58 /* (size given to avoid silly warnings with Visual C++) */ 59 60 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 61 62 #define ERR_RETURN(strm,err) \ 63 return (strm->msg = (char*)ERR_MSG(err), (err)) 64 /* To be used only when the state is known to be valid */ 65 66 /* common constants */ 67 68 #ifndef DEF_WBITS 69 # define DEF_WBITS MAX_WBITS 70 #endif 71 /* default windowBits for decompression. MAX_WBITS is for compression only */ 72 73 #if MAX_MEM_LEVEL >= 8 74 # define DEF_MEM_LEVEL 8 75 #else 76 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 77 #endif 78 /* default memLevel */ 79 80 #define STORED_BLOCK 0 81 #define STATIC_TREES 1 82 #define DYN_TREES 2 83 /* The three kinds of block type */ 84 85 #define MIN_MATCH 3 86 #define MAX_MATCH 258 87 /* The minimum and maximum match lengths */ 88 89 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 90 91 /* target dependencies */ 92 93 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 94 # define OS_CODE 0x00 95 # if defined(__TURBOC__) || defined(__BORLANDC__) 96 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 97 /* Allow compilation with ANSI keywords only enabled */ 98 void _Cdecl farfree( void *block ); 99 void *_Cdecl farmalloc( unsigned long nbytes ); 100 # else 101 # include <alloc.h> 102 # endif 103 # else /* MSC or DJGPP */ 104 # include <malloc.h> 105 # endif 106 #endif 107 108 #ifdef AMIGA 109 # define OS_CODE 0x01 110 #endif 111 112 #if defined(VAXC) || defined(VMS) 113 # define OS_CODE 0x02 114 # define F_OPEN(name, mode) \ 115 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 116 #endif 117 118 #if defined(ATARI) || defined(atarist) 119 # define OS_CODE 0x05 120 #endif 121 122 #ifdef OS2 123 # define OS_CODE 0x06 124 # ifdef M_I86 125 #include <malloc.h> 126 # endif 127 #endif 128 129 #if defined(MACOS) || defined(TARGET_OS_MAC) 130 # define OS_CODE 0x07 131 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 132 # include <unix.h> /* for fdopen */ 133 # else 134 # ifndef fdopen 135 # define fdopen(fd,mode) NULL /* No fdopen() */ 136 # endif 137 # endif 138 #endif 139 140 #ifdef TOPS20 141 # define OS_CODE 0x0a 142 #endif 143 144 #ifdef WIN32 145 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 146 # define OS_CODE 0x0b 147 # endif 148 #endif 149 150 #ifdef __50SERIES /* Prime/PRIMOS */ 151 # define OS_CODE 0x0f 152 #endif 153 154 #if defined(_BEOS_) || defined(RISCOS) 155 # define fdopen(fd,mode) NULL /* No fdopen() */ 156 #endif 157 158 #if (defined(_MSC_VER) && (_MSC_VER > 600)) 159 # if defined(_WIN32_WCE) 160 # define fdopen(fd,mode) NULL /* No fdopen() */ 161 # ifndef _PTRDIFF_T_DEFINED 162 typedef int ptrdiff_t; 163 # define _PTRDIFF_T_DEFINED 164 # endif 165 # else 166 # define fdopen(fd,type) _fdopen(fd,type) 167 # endif 168 #endif 169 170 /* common defaults */ 171 172 #ifndef OS_CODE 173 # define OS_CODE 0x03 /* assume Unix */ 174 #endif 175 176 #ifndef F_OPEN 177 # define F_OPEN(name, mode) fopen((name), (mode)) 178 #endif 179 180 /* functions */ 181 182 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 183 # ifndef HAVE_VSNPRINTF 184 # define HAVE_VSNPRINTF 185 # endif 186 #endif 187 #if defined(__CYGWIN__) 188 # ifndef HAVE_VSNPRINTF 189 # define HAVE_VSNPRINTF 190 # endif 191 #endif 192 #ifndef HAVE_VSNPRINTF 193 # ifdef MSDOS 194 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 195 but for now we just assume it doesn't. */ 196 # define NO_vsnprintf 197 # endif 198 # ifdef __TURBOC__ 199 # define NO_vsnprintf 200 # endif 201 # ifdef WIN32 202 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 203 # if !defined(vsnprintf) && !defined(NO_vsnprintf) 204 # define vsnprintf _vsnprintf 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 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 240 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 241 extern void zmemzero OF((Bytef* dest, uInt len)); 242 #endif 243 244 /* Diagnostic functions */ 245 #ifdef DEBUG_LIBZ 246 # include <stdio.h> 247 extern int z_verbose; 248 extern void 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 zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 266 void zcfree OF((voidpf opaque, voidpf ptr)); 267 268 #define ZALLOC(strm, items, size) \ 269 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 270 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 271 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 272 273 #endif /* ZUTIL_H */ 274