zutil.h revision 1.2
1 /* $NetBSD: zutil.h,v 1.2 2006/01/14 20:28:58 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 #if defined(__NetBSD__) && (defined(_KERNEL) || defined(_STANDALONE)) 22 23 /* XXX doesn't seem to need anything at all, but this is for consistency. */ 24 # include <lib/libkern/libkern.h> 25 26 #else 27 #ifdef STDC 28 # ifndef _WIN32_WCE 29 # include <stddef.h> 30 # endif 31 # include <string.h> 32 # include <stdlib.h> 33 #endif 34 #ifdef NO_ERRNO_H 35 # ifdef _WIN32_WCE 36 /* The Microsoft C Run-Time Library for Windows CE doesn't have 37 * errno. We define it as a global variable to simplify porting. 38 * Its value is always 0 and should not be used. We rename it to 39 * avoid conflict with other libraries that use the same workaround. 40 */ 41 # define errno z_errno 42 # endif 43 extern int errno; 44 #else 45 # ifndef _WIN32_WCE 46 # include <errno.h> 47 # endif 48 #endif 49 #endif /* __NetBSD__ && (_KERNEL || _STANDALONE) */ 50 51 #ifndef local 52 # define local static 53 #endif 54 /* compile with -Dlocal if your debugger can't find static symbols */ 55 56 typedef unsigned char uch; 57 typedef uch FAR uchf; 58 typedef unsigned short ush; 59 typedef ush FAR ushf; 60 typedef unsigned long ulg; 61 62 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 63 /* (size given to avoid silly warnings with Visual C++) */ 64 65 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 66 67 #define ERR_RETURN(strm,err) \ 68 return (strm->msg = (char*)ERR_MSG(err), (err)) 69 /* To be used only when the state is known to be valid */ 70 71 /* common constants */ 72 73 #ifndef DEF_WBITS 74 # define DEF_WBITS MAX_WBITS 75 #endif 76 /* default windowBits for decompression. MAX_WBITS is for compression only */ 77 78 #if MAX_MEM_LEVEL >= 8 79 # define DEF_MEM_LEVEL 8 80 #else 81 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 82 #endif 83 /* default memLevel */ 84 85 #define STORED_BLOCK 0 86 #define STATIC_TREES 1 87 #define DYN_TREES 2 88 /* The three kinds of block type */ 89 90 #define MIN_MATCH 3 91 #define MAX_MATCH 258 92 /* The minimum and maximum match lengths */ 93 94 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 95 96 /* target dependencies */ 97 98 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 99 # define OS_CODE 0x00 100 # if defined(__TURBOC__) || defined(__BORLANDC__) 101 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 102 /* Allow compilation with ANSI keywords only enabled */ 103 void _Cdecl farfree( void *block ); 104 void *_Cdecl farmalloc( unsigned long nbytes ); 105 # else 106 # include <alloc.h> 107 # endif 108 # else /* MSC or DJGPP */ 109 # include <malloc.h> 110 # endif 111 #endif 112 113 #ifdef AMIGA 114 # define OS_CODE 0x01 115 #endif 116 117 #if defined(VAXC) || defined(VMS) 118 # define OS_CODE 0x02 119 # define F_OPEN(name, mode) \ 120 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 121 #endif 122 123 #if defined(ATARI) || defined(atarist) 124 # define OS_CODE 0x05 125 #endif 126 127 #ifdef OS2 128 # define OS_CODE 0x06 129 # ifdef M_I86 130 #include <malloc.h> 131 # endif 132 #endif 133 134 #if defined(MACOS) || defined(TARGET_OS_MAC) 135 # define OS_CODE 0x07 136 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 137 # include <unix.h> /* for fdopen */ 138 # else 139 # ifndef fdopen 140 # define fdopen(fd,mode) NULL /* No fdopen() */ 141 # endif 142 # endif 143 #endif 144 145 #ifdef TOPS20 146 # define OS_CODE 0x0a 147 #endif 148 149 #ifdef WIN32 150 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 151 # define OS_CODE 0x0b 152 # endif 153 #endif 154 155 #ifdef __50SERIES /* Prime/PRIMOS */ 156 # define OS_CODE 0x0f 157 #endif 158 159 #if defined(_BEOS_) || defined(RISCOS) 160 # define fdopen(fd,mode) NULL /* No fdopen() */ 161 #endif 162 163 #if (defined(_MSC_VER) && (_MSC_VER > 600)) 164 # if defined(_WIN32_WCE) 165 # define fdopen(fd,mode) NULL /* No fdopen() */ 166 # ifndef _PTRDIFF_T_DEFINED 167 typedef int ptrdiff_t; 168 # define _PTRDIFF_T_DEFINED 169 # endif 170 # else 171 # define fdopen(fd,type) _fdopen(fd,type) 172 # endif 173 #endif 174 175 /* common defaults */ 176 177 #ifndef OS_CODE 178 # define OS_CODE 0x03 /* assume Unix */ 179 #endif 180 181 #ifndef F_OPEN 182 # define F_OPEN(name, mode) fopen((name), (mode)) 183 #endif 184 185 /* functions */ 186 187 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 188 # ifndef HAVE_VSNPRINTF 189 # define HAVE_VSNPRINTF 190 # endif 191 #endif 192 #if defined(__CYGWIN__) 193 # ifndef HAVE_VSNPRINTF 194 # define HAVE_VSNPRINTF 195 # endif 196 #endif 197 #ifndef HAVE_VSNPRINTF 198 # ifdef MSDOS 199 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 200 but for now we just assume it doesn't. */ 201 # define NO_vsnprintf 202 # endif 203 # ifdef __TURBOC__ 204 # define NO_vsnprintf 205 # endif 206 # ifdef WIN32 207 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 208 # if !defined(vsnprintf) && !defined(NO_vsnprintf) 209 # define vsnprintf _vsnprintf 210 # endif 211 # endif 212 # ifdef __SASC 213 # define NO_vsnprintf 214 # endif 215 #endif 216 #ifdef VMS 217 # define NO_vsnprintf 218 #endif 219 220 #if defined(pyr) 221 # define NO_MEMCPY 222 #endif 223 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 224 /* Use our own functions for small and medium model with MSC <= 5.0. 225 * You may have to use the same strategy for Borland C (untested). 226 * The __SC__ check is for Symantec. 227 */ 228 # define NO_MEMCPY 229 #endif 230 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 231 # define HAVE_MEMCPY 232 #endif 233 #ifdef HAVE_MEMCPY 234 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 235 # define zmemcpy _fmemcpy 236 # define zmemcmp _fmemcmp 237 # define zmemzero(dest, len) _fmemset(dest, 0, len) 238 # else 239 # define zmemcpy memcpy 240 # define zmemcmp memcmp 241 # define zmemzero(dest, len) memset(dest, 0, len) 242 # endif 243 #else 244 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 245 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 246 extern void zmemzero OF((Bytef* dest, uInt len)); 247 #endif 248 249 /* Diagnostic functions */ 250 #ifdef DEBUG 251 # include <stdio.h> 252 extern int z_verbose; 253 extern void z_error OF((char *m)); 254 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 255 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 256 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 257 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 258 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 259 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 260 #else 261 # define Assert(cond,msg) 262 # define Trace(x) 263 # define Tracev(x) 264 # define Tracevv(x) 265 # define Tracec(c,x) 266 # define Tracecv(c,x) 267 #endif 268 269 270 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 271 void zcfree OF((voidpf opaque, voidpf ptr)); 272 273 #define ZALLOC(strm, items, size) \ 274 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 275 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 276 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 277 278 #endif /* ZUTIL_H */ 279
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