1/* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2022 Jean-loup Gailly, Mark Adler 3 * For conditions of distribution and use, see copyright notice in zlib.h 4 */ 5 6/* WARNING: this file should *not* be used by applications. It is 7 part of the implementation of the compression library and is 8 subject to change. Applications should only use zlib.h. 9 */ 10 11/* @(#) Id */ 12 13#ifndef ZUTIL_H 14#define ZUTIL_H 15 16#ifdef HAVE_HIDDEN 17# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 18#else 19# define ZLIB_INTERNAL 20#endif 21 22#include "zlib.h" 23 24#if defined(STDC) && !defined(Z_SOLO) 25# if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 26# include <stddef.h> 27# endif 28# include <string.h> 29# include <stdlib.h> 30#endif 31 32#ifndef local 33# define local static 34#endif 35/* since "static" is used to mean two completely different things in C, we 36 define "local" for the non-static meaning of "static", for readability 37 (compile with -Dlocal if your debugger can't find static symbols) */ 38 39typedef unsigned char uch; 40typedef uch FAR uchf; 41typedef unsigned short ush; 42typedef ush FAR ushf; 43typedef unsigned long ulg; 44 45#if !defined(Z_U8) && !defined(Z_SOLO) && defined(STDC) 46# include <limits.h> 47# if (ULONG_MAX == 0xffffffffffffffff) 48# define Z_U8 unsigned long 49# elif (ULLONG_MAX == 0xffffffffffffffff) 50# define Z_U8 unsigned long long 51# elif (UINT_MAX == 0xffffffffffffffff) 52# define Z_U8 unsigned 53# endif 54#endif 55 56extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 57/* (size given to avoid silly warnings with Visual C++) */ 58 59#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 60 61#define ERR_RETURN(strm,err) \ 62 return (strm->msg = ERR_MSG(err), (err)) 63/* To be used only when the state is known to be valid */ 64 65 /* common constants */ 66 67#ifndef DEF_WBITS 68# define DEF_WBITS MAX_WBITS 69#endif 70/* default windowBits for decompression. MAX_WBITS is for compression only */ 71 72#if MAX_MEM_LEVEL >= 8 73# define DEF_MEM_LEVEL 8 74#else 75# define DEF_MEM_LEVEL MAX_MEM_LEVEL 76#endif 77/* default memLevel */ 78 79#define STORED_BLOCK 0 80#define STATIC_TREES 1 81#define DYN_TREES 2 82/* The three kinds of block type */ 83 84#define MIN_MATCH 3 85#define MAX_MATCH 258 86/* The minimum and maximum match lengths */ 87 88#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 89 90 /* target dependencies */ 91 92#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 93# define OS_CODE 0x00 94# ifndef Z_SOLO 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#endif 108 109#ifdef AMIGA 110# define OS_CODE 1 111#endif 112 113#if defined(VAXC) || defined(VMS) 114# define OS_CODE 2 115# define F_OPEN(name, mode) \ 116 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 117#endif 118 119#ifdef __370__ 120# if __TARGET_LIB__ < 0x20000000 121# define OS_CODE 4 122# elif __TARGET_LIB__ < 0x40000000 123# define OS_CODE 11 124# else 125# define OS_CODE 8 126# endif 127#endif 128 129#if defined(ATARI) || defined(atarist) 130# define OS_CODE 5 131#endif 132 133#ifdef OS2 134# define OS_CODE 6 135# if defined(M_I86) && !defined(Z_SOLO) 136# include <malloc.h> 137# endif 138#endif 139 140#if defined(MACOS) || defined(TARGET_OS_MAC) 141# define OS_CODE 7 142# ifndef Z_SOLO 143# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 144# include <unix.h> /* for fdopen */ 145# else 146# ifndef fdopen 147# define fdopen(fd,mode) NULL /* No fdopen() */ 148# endif 149# endif 150# endif 151#endif 152 153#ifdef __acorn 154# define OS_CODE 13 155#endif 156 157#if defined(WIN32) && !defined(__CYGWIN__) 158# define OS_CODE 10 159#endif 160 161#ifdef _BEOS_ 162# define OS_CODE 16 163#endif 164 165#ifdef __TOS_OS400__ 166# define OS_CODE 18 167#endif 168 169#ifdef __APPLE__ 170# define OS_CODE 19 171#endif 172 173#if defined(_BEOS_) || defined(RISCOS) 174# define fdopen(fd,mode) NULL /* No fdopen() */ 175#endif 176 177#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 178# if defined(_WIN32_WCE) 179# define fdopen(fd,mode) NULL /* No fdopen() */ 180# else 181# define fdopen(fd,type) _fdopen(fd,type) 182# endif 183#endif 184 185#if defined(__BORLANDC__) && !defined(MSDOS) 186 #pragma warn -8004 187 #pragma warn -8008 188 #pragma warn -8066 189#endif 190 191/* provide prototypes for these when building zlib without LFS */ 192#if !defined(_WIN32) && \ 193 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 194 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 195 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 196#endif 197 198 /* common defaults */ 199 200#ifndef OS_CODE 201# define OS_CODE 3 /* assume Unix */ 202#endif 203 204#ifndef F_OPEN 205# define F_OPEN(name, mode) fopen((name), (mode)) 206#endif 207 208 /* functions */ 209 210#if defined(pyr) || defined(Z_SOLO) 211# define NO_MEMCPY 212#endif 213#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 214 /* Use our own functions for small and medium model with MSC <= 5.0. 215 * You may have to use the same strategy for Borland C (untested). 216 * The __SC__ check is for Symantec. 217 */ 218# define NO_MEMCPY 219#endif 220#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 221# define HAVE_MEMCPY 222#endif 223#ifdef HAVE_MEMCPY 224# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 225# define zmemcpy _fmemcpy 226# define zmemcmp _fmemcmp 227# define zmemzero(dest, len) _fmemset(dest, 0, len) 228# else 229# define zmemcpy memcpy 230# define zmemcmp memcmp 231# define zmemzero(dest, len) memset(dest, 0, len) 232# endif 233#else 234 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 235 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 236 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 237#endif 238 239/* Diagnostic functions */ 240#ifdef ZLIB_DEBUG 241# include <stdio.h> 242 extern int ZLIB_INTERNAL z_verbose; 243 extern void ZLIB_INTERNAL z_error OF((char *m)); 244# define Assert(cond,msg) {if(!(cond)) z_error(msg);} 245# define Trace(x) {if (z_verbose>=0) fprintf x ;} 246# define Tracev(x) {if (z_verbose>0) fprintf x ;} 247# define Tracevv(x) {if (z_verbose>1) fprintf x ;} 248# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 249# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 250#else 251# define Assert(cond,msg) 252# define Trace(x) 253# define Tracev(x) 254# define Tracevv(x) 255# define Tracec(c,x) 256# define Tracecv(c,x) 257#endif 258 259#ifndef Z_SOLO 260 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 261 unsigned size)); 262 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 263#endif 264 265#define ZALLOC(strm, items, size) \ 266 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 267#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 268#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 269 270/* Reverse the bytes in a 32-bit value */ 271#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 272 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 273 274#endif /* ZUTIL_H */ 275