1/* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2016 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#ifdef Z_SOLO 33 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ 34#endif 35 36#ifndef local 37# define local static 38#endif 39/* since "static" is used to mean two completely different things in C, we 40 define "local" for the non-static meaning of "static", for readability 41 (compile with -Dlocal if your debugger can't find static symbols) */ 42 43typedef unsigned char uch; 44typedef uch FAR uchf; 45typedef unsigned short ush; 46typedef ush FAR ushf; 47typedef unsigned long ulg; 48 49extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 50/* (size given to avoid silly warnings with Visual C++) */ 51 52#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 53 54#define ERR_RETURN(strm,err) \ 55 return (strm->msg = ERR_MSG(err), (err)) 56/* To be used only when the state is known to be valid */ 57 58 /* common constants */ 59 60#ifndef DEF_WBITS 61# define DEF_WBITS MAX_WBITS 62#endif 63/* default windowBits for decompression. MAX_WBITS is for compression only */ 64 65#if MAX_MEM_LEVEL >= 8 66# define DEF_MEM_LEVEL 8 67#else 68# define DEF_MEM_LEVEL MAX_MEM_LEVEL 69#endif 70/* default memLevel */ 71 72#define STORED_BLOCK 0 73#define STATIC_TREES 1 74#define DYN_TREES 2 75/* The three kinds of block type */ 76 77#define MIN_MATCH 3 78#define MAX_MATCH 258 79/* The minimum and maximum match lengths */ 80 81#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 82 83 /* target dependencies */ 84 85#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 86# define OS_CODE 0x00 87# ifndef Z_SOLO 88# if defined(__TURBOC__) || defined(__BORLANDC__) 89# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 90 /* Allow compilation with ANSI keywords only enabled */ 91 void _Cdecl farfree( void *block ); 92 void *_Cdecl farmalloc( unsigned long nbytes ); 93# else 94# include <alloc.h> 95# endif 96# else /* MSC or DJGPP */ 97# include <malloc.h> 98# endif 99# endif 100#endif 101 102#ifdef AMIGA 103# define OS_CODE 1 104#endif 105 106#if defined(VAXC) || defined(VMS) 107# define OS_CODE 2 108# define F_OPEN(name, mode) \ 109 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 110#endif 111 112#ifdef __370__ 113# if __TARGET_LIB__ < 0x20000000 114# define OS_CODE 4 115# elif __TARGET_LIB__ < 0x40000000 116# define OS_CODE 11 117# else 118# define OS_CODE 8 119# endif 120#endif 121 122#if defined(ATARI) || defined(atarist) 123# define OS_CODE 5 124#endif 125 126#ifdef OS2 127# define OS_CODE 6 128# if defined(M_I86) && !defined(Z_SOLO) 129# include <malloc.h> 130# endif 131#endif 132 133#if defined(MACOS) || defined(TARGET_OS_MAC) 134# define OS_CODE 7 135# ifndef Z_SOLO 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#endif 145 146#ifdef __acorn 147# define OS_CODE 13 148#endif 149 150#if defined(WIN32) && !defined(__CYGWIN__) 151# define OS_CODE 10 152#endif 153 154#ifdef _BEOS_ 155# define OS_CODE 16 156#endif 157 158#ifdef __TOS_OS400__ 159# define OS_CODE 18 160#endif 161 162#ifdef __APPLE__ 163# define OS_CODE 19 164#endif 165 166#if defined(_BEOS_) || defined(RISCOS) 167# define fdopen(fd,mode) NULL /* No fdopen() */ 168#endif 169 170#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 171# if defined(_WIN32_WCE) 172# define fdopen(fd,mode) NULL /* No fdopen() */ 173# ifndef _PTRDIFF_T_DEFINED 174 typedef int ptrdiff_t; 175# define _PTRDIFF_T_DEFINED 176# endif 177# else 178# define fdopen(fd,type) _fdopen(fd,type) 179# endif 180#endif 181 182#if defined(__BORLANDC__) && !defined(MSDOS) 183 #pragma warn -8004 184 #pragma warn -8008 185 #pragma warn -8066 186#endif 187 188/* provide prototypes for these when building zlib without LFS */ 189#if !defined(_WIN32) && \ 190 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 191 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 192 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 193#endif 194 195 /* common defaults */ 196 197#ifndef OS_CODE 198# define OS_CODE 3 /* assume Unix */ 199#endif 200 201#ifndef F_OPEN 202# define F_OPEN(name, mode) fopen((name), (mode)) 203#endif 204 205 /* functions */ 206 207#if defined(pyr) || defined(Z_SOLO) 208# define NO_MEMCPY 209#endif 210#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 211 /* Use our own functions for small and medium model with MSC <= 5.0. 212 * You may have to use the same strategy for Borland C (untested). 213 * The __SC__ check is for Symantec. 214 */ 215# define NO_MEMCPY 216#endif 217#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 218# define HAVE_MEMCPY 219#endif 220#ifdef HAVE_MEMCPY 221# ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 222# define zmemcpy _fmemcpy 223# define zmemcmp _fmemcmp 224# define zmemzero(dest, len) _fmemset(dest, 0, len) 225# else 226# define zmemcpy memcpy 227# define zmemcmp memcmp 228# define zmemzero(dest, len) memset(dest, 0, len) 229# endif 230#else 231 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 232 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 233 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 234#endif 235 236/* Diagnostic functions */ 237#ifdef ZLIB_DEBUG 238# include <stdio.h> 239 extern int ZLIB_INTERNAL z_verbose; 240 extern void ZLIB_INTERNAL z_error OF((char *m)); 241# define Assert(cond,msg) {if(!(cond)) z_error(msg);} 242# define Trace(x) {if (z_verbose>=0) fprintf x ;} 243# define Tracev(x) {if (z_verbose>0) fprintf x ;} 244# define Tracevv(x) {if (z_verbose>1) fprintf x ;} 245# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 246# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 247#else 248# define Assert(cond,msg) 249# define Trace(x) 250# define Tracev(x) 251# define Tracevv(x) 252# define Tracec(c,x) 253# define Tracecv(c,x) 254#endif 255 256#ifndef Z_SOLO 257 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 258 unsigned size)); 259 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); 260#endif 261 262#define ZALLOC(strm, items, size) \ 263 (*((strm)->zalloc))((strm)->opaque, (items), (size)) 264#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) 265#define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 266 267/* Reverse the bytes in a 32-bit value */ 268#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 269 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 270 271#endif /* ZUTIL_H */ 272