zutil.h revision 1.5
1 /* $NetBSD: zutil.h,v 1.5 2017/01/10 01:27:41 christos Exp $ */ 2 3 /* zutil.h -- internal interface and configuration of the compression library 4 * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler 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: zutil.h,v 1.5 2017/01/10 01:27:41 christos Exp $ */ 14 15 #ifndef ZUTIL_H 16 #define ZUTIL_H 17 18 #ifdef HAVE_HIDDEN 19 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 20 #else 21 # define ZLIB_INTERNAL 22 #endif 23 24 #include "zlib.h" 25 26 #if defined(STDC) && !defined(Z_SOLO) 27 # if defined(_KERNEL) || defined(_STANDALONE) 28 # include <lib/libkern/libkern.h> 29 # else 30 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 31 # include <stddef.h> 32 # endif 33 # include <string.h> 34 # include <stdlib.h> 35 # endif 36 #endif 37 38 #ifdef Z_SOLO 39 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 40 #endif 41 42 #ifndef local 43 # define local static 44 #endif 45 /* since "static" is used to mean two completely different things in C, we 46 define "local" for the non-static meaning of "static", for readability 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 z_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 = __UNCONST(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 # ifndef Z_SOLO 94 # if defined(__TURBOC__) || defined(__BORLANDC__) 95 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 96 /* Allow compilation with ANSI keywords only enabled */ 97 void _Cdecl farfree( void *block ); 98 void *_Cdecl farmalloc( unsigned long nbytes ); 99 # else 100 # include <alloc.h> 101 # endif 102 # else /* MSC or DJGPP */ 103 # include <malloc.h> 104 # endif 105 # endif 106 #endif 107 108 #ifdef AMIGA 109 # define OS_CODE 1 110 #endif 111 112 #if defined(VAXC) || defined(VMS) 113 # define OS_CODE 2 114 # define F_OPEN(name, mode) \ 115 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 116 #endif 117 118 #ifdef __370__ 119 # if __TARGET_LIB__ < 0x20000000 120 # define OS_CODE 4 121 # elif __TARGET_LIB__ < 0x40000000 122 # define OS_CODE 11 123 # else 124 # define OS_CODE 8 125 # endif 126 #endif 127 128 #if defined(ATARI) || defined(atarist) 129 # define OS_CODE 5 130 #endif 131 132 #ifdef OS2 133 # define OS_CODE 6 134 # if defined(M_I86) && !defined(Z_SOLO) 135 # include <malloc.h> 136 # endif 137 #endif 138 139 #if defined(MACOS) || defined(TARGET_OS_MAC) 140 # define OS_CODE 7 141 # ifndef Z_SOLO 142 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 143 # include <unix.h> /* for fdopen */ 144 # else 145 # ifndef fdopen 146 # define fdopen(fd,mode) NULL /* No fdopen() */ 147 # endif 148 # endif 149 # endif 150 #endif 151 152 #ifdef __acorn 153 # define OS_CODE 13 154 #endif 155 156 #if defined(WIN32) && !defined(__CYGWIN__) 157 # define OS_CODE 10 158 #endif 159 160 #ifdef _BEOS_ 161 # define OS_CODE 16 162 #endif 163 164 #ifdef __TOS_OS400__ 165 # define OS_CODE 18 166 #endif 167 168 #ifdef __APPLE__ 169 # define OS_CODE 19 170 #endif 171 172 #if defined(_BEOS_) || defined(RISCOS) 173 # define fdopen(fd,mode) NULL /* No fdopen() */ 174 #endif 175 176 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 177 # if defined(_WIN32_WCE) 178 # define fdopen(fd,mode) NULL /* No fdopen() */ 179 # ifndef _PTRDIFF_T_DEFINED 180 typedef int ptrdiff_t; 181 # define _PTRDIFF_T_DEFINED 182 # endif 183 # else 184 # define fdopen(fd,type) _fdopen(fd,type) 185 # endif 186 #endif 187 188 #if defined(__BORLANDC__) && !defined(MSDOS) 189 #pragma warn -8004 190 #pragma warn -8008 191 #pragma warn -8066 192 #endif 193 194 /* provide prototypes for these when building zlib without LFS */ 195 #if !defined(_WIN32) && \ 196 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 197 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 198 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 199 #endif 200 201 /* common defaults */ 202 203 #ifndef OS_CODE 204 # define OS_CODE 3 /* assume Unix */ 205 #endif 206 207 #ifndef F_OPEN 208 # define F_OPEN(name, mode) fopen((name), (mode)) 209 #endif 210 211 /* functions */ 212 213 #if defined(pyr) || defined(Z_SOLO) 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 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 238 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 239 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 240 #endif 241 242 /* Diagnostic functions */ 243 #ifdef ZLIB_DEBUG 244 # include <stdio.h> 245 extern int ZLIB_INTERNAL z_verbose; 246 extern void ZLIB_INTERNAL 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 #ifndef Z_SOLO 263 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 264 unsigned size)); 265 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 266 #endif 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 /* Reverse the bytes in a 32-bit value */ 274 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 275 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 276 277 #endif /* ZUTIL_H */ 278
Indexes created Wed Sep 24 14:09:57 GMT 2025