1/* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2010 Jean-loup Gailly. 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#if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ) 17# define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 18#else 19# define ZLIB_INTERNAL 20#endif 21 22#include "zlib.h" 23 24#ifdef STDC 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/* compile with -Dlocal if your debugger can't find static symbols */ 36 37typedef unsigned char uch; 38typedef uch FAR uchf; 39typedef unsigned short ush; 40typedef ush FAR ushf; 41typedef unsigned long ulg; 42 43extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 44/* (size given to avoid silly warnings with Visual C++) */ 45 46#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 47 48#define ERR_RETURN(strm,err) \ 49 return (strm->msg = (char*)ERR_MSG(err), (err)) 50/* To be used only when the state is known to be valid */ 51 52 /* common constants */ 53 54#ifndef DEF_WBITS 55# define DEF_WBITS MAX_WBITS 56#endif 57/* default windowBits for decompression. MAX_WBITS is for compression only */ 58 59#if MAX_MEM_LEVEL >= 8 60# define DEF_MEM_LEVEL 8 61#else 62# define DEF_MEM_LEVEL MAX_MEM_LEVEL 63#endif 64/* default memLevel */ 65 66#define STORED_BLOCK 0 67#define STATIC_TREES 1 68#define DYN_TREES 2 69/* The three kinds of block type */ 70 71#define MIN_MATCH 3 72#define MAX_MATCH 258 73/* The minimum and maximum match lengths */ 74 75#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 76 77 /* target dependencies */ 78 79#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 80# define OS_CODE 0x00 81# if defined(__TURBOC__) || defined(__BORLANDC__) 82# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 83 /* Allow compilation with ANSI keywords only enabled */ 84 void _Cdecl farfree( void *block ); 85 void *_Cdecl farmalloc( unsigned long nbytes ); 86# else 87# include <alloc.h> 88# endif 89# else /* MSC or DJGPP */ 90# include <malloc.h> 91# endif 92#endif 93 94#ifdef AMIGA 95# define OS_CODE 0x01 96#endif 97 98#if defined(VAXC) || defined(VMS) 99# define OS_CODE 0x02 100# define F_OPEN(name, mode) \ 101 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 102#endif 103 104#if defined(ATARI) || defined(atarist) 105# define OS_CODE 0x05 106#endif 107 108#ifdef OS2 109# define OS_CODE 0x06 110# ifdef M_I86 111# include <malloc.h> 112# endif 113#endif 114 115#if defined(MACOS) || defined(TARGET_OS_MAC) 116# define OS_CODE 0x07 117# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os 118# include <unix.h> /* for fdopen */ 119# else 120# ifndef fdopen 121# define fdopen(fd,mode) NULL /* No fdopen() */ 122# endif 123# endif 124#endif 125 126#ifdef TOPS20 127# define OS_CODE 0x0a 128#endif 129 130#ifdef WIN32 131# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ 132# define OS_CODE 0x0b 133# endif 134#endif 135 136#ifdef __50SERIES /* Prime/PRIMOS */ 137# define OS_CODE 0x0f 138#endif 139 140#if defined(_BEOS_) || defined(RISCOS) 141# define fdopen(fd,mode) NULL /* No fdopen() */ 142#endif 143 144#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 145# if defined(_WIN32_WCE) 146# define fdopen(fd,mode) NULL /* No fdopen() */ 147# ifndef _PTRDIFF_T_DEFINED 148 typedef int ptrdiff_t; 149# define _PTRDIFF_T_DEFINED 150# endif 151# else 152# define fdopen(fd,type) _fdopen(fd,type) 153# endif 154#endif 155 156#if defined(__BORLANDC__) 157 #pragma warn -8004 158 #pragma warn -8008 159 #pragma warn -8066 160#endif 161 162/* provide prototypes for these when building zlib without LFS */ 163#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0 164 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t)); 165 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t)); 166#endif 167 168 /* common defaults */ 169 170#ifndef OS_CODE 171# define OS_CODE 0x03 /* assume Unix */ 172#endif 173 174#ifndef F_OPEN 175# define F_OPEN(name, mode) fopen((name), (mode)) 176#endif 177 178 /* functions */ 179 180#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) 181# ifndef HAVE_VSNPRINTF 182# define HAVE_VSNPRINTF 183# endif 184#endif 185#if defined(__CYGWIN__) 186# ifndef HAVE_VSNPRINTF 187# define HAVE_VSNPRINTF 188# endif 189#endif 190#ifndef HAVE_VSNPRINTF 191# ifdef MSDOS 192 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), 193 but for now we just assume it doesn't. */ 194# define NO_vsnprintf 195# endif 196# ifdef __TURBOC__ 197# define NO_vsnprintf 198# endif 199# ifdef WIN32 200 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ 201# if !defined(vsnprintf) && !defined(NO_vsnprintf) 202# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 ) 203# define vsnprintf _vsnprintf 204# endif 205# endif 206# endif 207# ifdef __SASC 208# define NO_vsnprintf 209# endif 210#endif 211#ifdef VMS 212# define NO_vsnprintf 213#endif 214 215#if defined(pyr) 216# define NO_MEMCPY 217#endif 218#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 219 /* Use our own functions for small and medium model with MSC <= 5.0. 220 * You may have to use the same strategy for Borland C (untested). 221 * The __SC__ check is for Symantec. 222 */ 223# define NO_MEMCPY 224#endif 225#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 226# define HAVE_MEMCPY 227#endif 228#ifdef HAVE_MEMCPY 229# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 230# define zmemcpy _fmemcpy 231# define zmemcmp _fmemcmp 232# define zmemzero(dest, len) _fmemset(dest, 0, len) 233# else 234# define zmemcpy memcpy 235# define zmemcmp memcmp 236# define zmemzero(dest, len) memset(dest, 0, len) 237# endif 238#else 239 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 240 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 241 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 242#endif 243 244/* Diagnostic functions */ 245#ifdef DEBUG 246# include <stdio.h> 247 extern int ZLIB_INTERNAL z_verbose; 248 extern void ZLIB_INTERNAL z_error OF((char *m)); 249# define Assert(cond,msg) {if(!(cond)) z_error(msg);} 250# define Trace(x) {if (z_verbose>=0) fprintf x ;} 251# define Tracev(x) {if (z_verbose>0) fprintf x ;} 252# define Tracevv(x) {if (z_verbose>1) fprintf x ;} 253# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 254# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 255#else 256# define Assert(cond,msg) 257# define Trace(x) 258# define Tracev(x) 259# define Tracevv(x) 260# define Tracec(c,x) 261# define Tracecv(c,x) 262#endif 263 264 265voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 266 unsigned size)); 267void ZLIB_INTERNAL 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