1 /* 2 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* zutil.h -- internal interface and configuration of the compression library 7 * Copyright (C) 1995-2005 Jean-loup Gailly. 8 * For conditions of distribution and use, see copyright notice in zlib.h 9 */ 10 11 /* WARNING: this file should *not* be used by applications. It is 12 part of the implementation of the compression library and is 13 subject to change. Applications should only use zlib.h. 14 */ 15 16 #ifndef _ZUTIL_H 17 #define _ZUTIL_H 18 19 #pragma ident "%Z%%M% %I% %E% SMI" 20 21 #define ZLIB_INTERNAL 22 #include "zlib.h" 23 24 #ifdef STDC 25 # ifndef _WIN32_WCE 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 <sys/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)) 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 /* common defaults */ 172 173 #ifndef OS_CODE 174 # define OS_CODE 0x03 /* assume Unix */ 175 #endif 176 177 #ifndef F_OPEN 178 # define F_OPEN(name, mode) fopen((name), (mode)) 179 #endif 180 181 /* functions */ 182 183 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 184 # ifndef HAVE_VSNPRINTF 185 # define HAVE_VSNPRINTF 186 # endif 187 #endif 188 #if defined(__CYGWIN__) 189 # ifndef HAVE_VSNPRINTF 190 # define HAVE_VSNPRINTF 191 # endif 192 #endif 193 #ifndef HAVE_VSNPRINTF 194 # ifdef MSDOS 195 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 196 but for now we just assume it doesn't. */ 197 # define NO_vsnprintf 198 # endif 199 # ifdef __TURBOC__ 200 # define NO_vsnprintf 201 # endif 202 # ifdef WIN32 203 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 204 # if !defined(vsnprintf) && !defined(NO_vsnprintf) 205 # define vsnprintf _vsnprintf 206 # endif 207 # endif 208 # ifdef __SASC 209 # define NO_vsnprintf 210 # endif 211 #endif 212 #ifdef VMS 213 # define NO_vsnprintf 214 #endif 215 216 #if defined(pyr) 217 # define NO_MEMCPY 218 #endif 219 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 220 /* Use our own functions for small and medium model with MSC <= 5.0. 221 * You may have to use the same strategy for Borland C (untested). 222 * The __SC__ check is for Symantec. 223 */ 224 # define NO_MEMCPY 225 #endif 226 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 227 # define HAVE_MEMCPY 228 #endif 229 #ifdef HAVE_MEMCPY 230 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 231 # define zmemcpy _fmemcpy 232 # define zmemcmp _fmemcmp 233 # define zmemzero(dest, len) _fmemset(dest, 0, len) 234 # else 235 # define zmemcpy memcpy 236 # define zmemcmp memcmp 237 # define zmemzero(dest, len) memset(dest, 0, len) 238 # endif 239 #else 240 extern void zmemcpy OF((void* dest, const void* source, uInt len)); 241 extern int zmemcmp OF((const void* s1, const void* s2, uInt len)); 242 extern void zmemzero OF((void* dest, uInt len)); 243 #endif 244 245 /* Diagnostic functions */ 246 #ifdef DEBUG 247 # include <stdio.h> 248 extern int z_verbose; 249 extern void z_error OF((char *m)); 250 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 251 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 252 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 253 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 254 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 255 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 256 #else 257 # define Assert(cond,msg) 258 # define Trace(x) 259 # define Tracev(x) 260 # define Tracevv(x) 261 # define Tracec(c,x) 262 # define Tracecv(c,x) 263 #endif 264 265 266 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 267 void 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