zutil.h revision 1.8
1 /* $NetBSD: zutil.h,v 1.8 2024/09/22 19:12:28 christos Exp $ */ 2 3 /* zutil.h -- internal interface and configuration of the compression library 4 * Copyright (C) 1995-2024 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 */ 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 #ifndef local 39 # define local static 40 #endif 41 /* since "static" is used to mean two completely different things in C, we 42 define "local" for the non-static meaning of "static", for readability 43 (compile with -Dlocal if your debugger can't find static symbols) */ 44 45 typedef unsigned char uch; 46 typedef uch FAR uchf; 47 typedef unsigned short ush; 48 typedef ush FAR ushf; 49 typedef unsigned long ulg; 50 51 #if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC) 52 # if defined(_KERNEL) || defined(_STANDALONE) 53 # ifdef _LP64 54 # define Z_U8 unsigned long 55 # else 56 # define Z_U8 unsigned long long 57 # endif 58 # else 59 # include <limits.h> 60 # if (ULONG_MAX == 0xffffffffffffffff) 61 # define Z_U8 unsigned long 62 # elif (ULLONG_MAX == 0xffffffffffffffff) 63 # define Z_U8 unsigned long long 64 # elif (UINT_MAX == 0xffffffffffffffff) 65 # define Z_U8 unsigned 66 # endif 67 # endif 68 #endif 69 70 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 71 /* (size given to avoid silly warnings with Visual C++) */ 72 73 #define ERR_MSG(err) z_errmsg[(err) < -6 || (err) > 2 ? 9 : 2 - (err)] 74 75 #define ERR_RETURN(strm,err) \ 76 return (strm->msg = __UNCONST(ERR_MSG(err)), (err)) 77 /* To be used only when the state is known to be valid */ 78 79 /* common constants */ 80 81 #ifndef DEF_WBITS 82 # define DEF_WBITS MAX_WBITS 83 #endif 84 /* default windowBits for decompression. MAX_WBITS is for compression only */ 85 86 #if MAX_MEM_LEVEL >= 8 87 # define DEF_MEM_LEVEL 8 88 #else 89 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 90 #endif 91 /* default memLevel */ 92 93 #define STORED_BLOCK 0 94 #define STATIC_TREES 1 95 #define DYN_TREES 2 96 /* The three kinds of block type */ 97 98 #define MIN_MATCH 3 99 #define MAX_MATCH 258 100 /* The minimum and maximum match lengths */ 101 102 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 103 104 /* target dependencies */ 105 106 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 107 # define OS_CODE 0x00 108 # ifndef Z_SOLO 109 # if defined(__TURBOC__) || defined(__BORLANDC__) 110 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 111 /* Allow compilation with ANSI keywords only enabled */ 112 void _Cdecl farfree( void *block ); 113 void *_Cdecl farmalloc( unsigned long nbytes ); 114 # else 115 # include <alloc.h> 116 # endif 117 # else /* MSC or DJGPP */ 118 # include <malloc.h> 119 # endif 120 # endif 121 #endif 122 123 #ifdef AMIGA 124 # define OS_CODE 1 125 #endif 126 127 #if defined(VAXC) || defined(VMS) 128 # define OS_CODE 2 129 # define F_OPEN(name, mode) \ 130 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 131 #endif 132 133 #ifdef __370__ 134 # if __TARGET_LIB__ < 0x20000000 135 # define OS_CODE 4 136 # elif __TARGET_LIB__ < 0x40000000 137 # define OS_CODE 11 138 # else 139 # define OS_CODE 8 140 # endif 141 #endif 142 143 #if defined(ATARI) || defined(atarist) 144 # define OS_CODE 5 145 #endif 146 147 #ifdef OS2 148 # define OS_CODE 6 149 # if defined(M_I86) && !defined(Z_SOLO) 150 # include <malloc.h> 151 # endif 152 #endif 153 154 #if defined(MACOS) 155 # define OS_CODE 7 156 #endif 157 158 #ifdef __acorn 159 # define OS_CODE 13 160 #endif 161 162 #if defined(WIN32) && !defined(__CYGWIN__) 163 # define OS_CODE 10 164 #endif 165 166 #ifdef _BEOS_ 167 # define OS_CODE 16 168 #endif 169 170 #ifdef __TOS_OS400__ 171 # define OS_CODE 18 172 #endif 173 174 #ifdef __APPLE__ 175 # define OS_CODE 19 176 #endif 177 178 #if defined(__BORLANDC__) && !defined(MSDOS) 179 #pragma warn -8004 180 #pragma warn -8008 181 #pragma warn -8066 182 #endif 183 184 /* provide prototypes for these when building zlib without LFS */ 185 #if !defined(_WIN32) && \ 186 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 187 ZEXTERN uLong ZEXPORT adler32_combine64(uLong, uLong, z_off_t); 188 ZEXTERN uLong ZEXPORT crc32_combine64(uLong, uLong, z_off_t); 189 ZEXTERN uLong ZEXPORT crc32_combine_gen64(z_off_t); 190 #endif 191 192 /* common defaults */ 193 194 #ifndef OS_CODE 195 # define OS_CODE 3 /* assume Unix */ 196 #endif 197 198 #ifndef F_OPEN 199 # define F_OPEN(name, mode) fopen((name), (mode)) 200 #endif 201 202 /* functions */ 203 204 #if defined(pyr) || defined(Z_SOLO) 205 # define NO_MEMCPY 206 #endif 207 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 208 /* Use our own functions for small and medium model with MSC <= 5.0. 209 * You may have to use the same strategy for Borland C (untested). 210 * The __SC__ check is for Symantec. 211 */ 212 # define NO_MEMCPY 213 #endif 214 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 215 # define HAVE_MEMCPY 216 #endif 217 #ifdef HAVE_MEMCPY 218 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 219 # define zmemcpy _fmemcpy 220 # define zmemcmp _fmemcmp 221 # define zmemzero(dest, len) _fmemset(dest, 0, len) 222 # else 223 # define zmemcpy memcpy 224 # define zmemcmp memcmp 225 # define zmemzero(dest, len) memset(dest, 0, len) 226 # endif 227 #else 228 void ZLIB_INTERNAL zmemcpy(Bytef* dest, const Bytef* source, uInt len); 229 int ZLIB_INTERNAL zmemcmp(const Bytef* s1, const Bytef* s2, uInt len); 230 void ZLIB_INTERNAL zmemzero(Bytef* dest, uInt len); 231 #endif 232 233 /* Diagnostic functions */ 234 #ifdef ZLIB_DEBUG 235 # include <stdio.h> 236 extern int ZLIB_INTERNAL z_verbose; 237 extern void ZLIB_INTERNAL z_error(char *m); 238 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 239 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 240 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 241 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 242 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 243 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 244 #else 245 # define Assert(cond,msg) 246 # define Trace(x) 247 # define Tracev(x) 248 # define Tracevv(x) 249 # define Tracec(c,x) 250 # define Tracecv(c,x) 251 #endif 252 253 #ifndef Z_SOLO 254 voidpf ZLIB_INTERNAL zcalloc(voidpf opaque, unsigned items, 255 unsigned size); 256 void ZLIB_INTERNAL zcfree(voidpf opaque, voidpf ptr); 257 #endif 258 259 #define ZALLOC(strm, items, size) \ 260 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 261 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 262 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 263 264 /* Reverse the bytes in a 32-bit value */ 265 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 266 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 267 268 #endif /* ZUTIL_H */ 269
Indexes created Tue Sep 23 14:10:03 GMT 2025