/* zutil.h -- internal interface and configuration of the compression library* Copyright (C) 1995-2005 Jean-loup Gailly.* For conditions of distribution and use, see copyright notice in zlib.h*//* WARNING: this file should *not* be used by applications. It ispart of the implementation of the compression library and issubject to change. Applications should only use zlib.h.*//* @(#) $Id$ */#ifndef ZUTIL_H#define ZUTIL_H#define ZLIB_INTERNAL#include "zlib.h"#ifdef STDC# ifndef _WIN32_WCE# include <stddef.h># endif# include <string.h># include <stdlib.h>#endif#ifdef NO_ERRNO_H# ifdef _WIN32_WCE/* The Microsoft C Run-Time Library for Windows CE doesn't have* errno. We define it as a global variable to simplify porting.* Its value is always 0 and should not be used. We rename it to* avoid conflict with other libraries that use the same workaround.*/# define errno z_errno# endifextern int errno;#else# ifndef _WIN32_WCE# include <errno.h># endif#endif#ifndef local# define local static#endif/* compile with -Dlocal if your debugger can't find static symbols */typedef unsigned char uch;typedef uch FAR uchf;typedef unsigned short ush;typedef ush FAR ushf;typedef unsigned long ulg;extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error *//* (size given to avoid silly warnings with Visual C++) */#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]#define ERR_RETURN(strm,err) \return (strm->msg = (char*)ERR_MSG(err), (err))/* To be used only when the state is known to be valid *//* common constants */#ifndef DEF_WBITS# define DEF_WBITS MAX_WBITS#endif/* default windowBits for decompression. MAX_WBITS is for compression only */#if MAX_MEM_LEVEL >= 8# define DEF_MEM_LEVEL 8#else# define DEF_MEM_LEVEL MAX_MEM_LEVEL#endif/* default memLevel */#define STORED_BLOCK 0#define STATIC_TREES 1#define DYN_TREES 2/* The three kinds of block type */#define MIN_MATCH 3#define MAX_MATCH 258/* The minimum and maximum match lengths */#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header *//* target dependencies */#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))# define OS_CODE 0x00# if defined(__TURBOC__) || defined(__BORLANDC__)# if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))/* Allow compilation with ANSI keywords only enabled */void _Cdecl farfree( void *block );void *_Cdecl farmalloc( unsigned long nbytes );# else# include <alloc.h># endif# else /* MSC or DJGPP */# include <malloc.h># endif#endif#ifdef AMIGA# define OS_CODE 0x01#endif#if defined(VAXC) || defined(VMS)# define OS_CODE 0x02# define F_OPEN(name, mode) \fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")#endif#if defined(ATARI) || defined(atarist)# define OS_CODE 0x05#endif#ifdef OS2# define OS_CODE 0x06# ifdef M_I86#include <malloc.h># endif#endif#if defined(MACOS) || defined(TARGET_OS_MAC)# define OS_CODE 0x07# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os# include <unix.h> /* for fdopen */# else# ifndef fdopen# define fdopen(fd,mode) NULL /* No fdopen() */# endif# endif#endif#ifdef TOPS20# define OS_CODE 0x0a#endif#ifdef WIN32# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */# define OS_CODE 0x0b# endif#endif#ifdef __50SERIES /* Prime/PRIMOS */# define OS_CODE 0x0f#endif#if defined(_BEOS_) || defined(RISCOS)# define fdopen(fd,mode) NULL /* No fdopen() */#endif#if (defined(_MSC_VER) && (_MSC_VER > 600))# if defined(_WIN32_WCE)# define fdopen(fd,mode) NULL /* No fdopen() */# ifndef _PTRDIFF_T_DEFINEDtypedef int ptrdiff_t;# define _PTRDIFF_T_DEFINED# endif# else# define fdopen(fd,type) _fdopen(fd,type)# endif#endif/* common defaults */#ifndef OS_CODE# define OS_CODE 0x03 /* assume Unix */#endif#ifndef F_OPEN# define F_OPEN(name, mode) fopen((name), (mode))#endif/* functions */#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)# ifndef HAVE_VSNPRINTF# define HAVE_VSNPRINTF# endif#endif#if defined(__CYGWIN__)# ifndef HAVE_VSNPRINTF# define HAVE_VSNPRINTF# endif#endif#ifndef HAVE_VSNPRINTF# ifdef MSDOS/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),but for now we just assume it doesn't. */# define NO_vsnprintf# endif# ifdef __TURBOC__# define NO_vsnprintf# endif# ifdef WIN32/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */# if !defined(vsnprintf) && !defined(NO_vsnprintf)# define vsnprintf _vsnprintf# endif# endif# ifdef __SASC# define NO_vsnprintf# endif#endif#ifdef VMS# define NO_vsnprintf#endif#if defined(pyr)# define NO_MEMCPY#endif#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)/* Use our own functions for small and medium model with MSC <= 5.0.* You may have to use the same strategy for Borland C (untested).* The __SC__ check is for Symantec.*/# define NO_MEMCPY#endif#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)# define HAVE_MEMCPY#endif#ifdef HAVE_MEMCPY# ifdef SMALL_MEDIUM /* MSDOS small or medium model */# define zmemcpy _fmemcpy# define zmemcmp _fmemcmp# define zmemzero(dest, len) _fmemset(dest, 0, len)# else# define zmemcpy memcpy# define zmemcmp memcmp# define zmemzero(dest, len) memset(dest, 0, len)# endif#elseextern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));extern void zmemzero OF((Bytef* dest, uInt len));#endif/* Diagnostic functions */#ifdef DEBUG# include <stdio.h>extern int z_verbose;extern void z_error OF((char *m));# define Assert(cond,msg) {if(!(cond)) z_error(msg);}# define Trace(x) {if (z_verbose>=0) fprintf x ;}# define Tracev(x) {if (z_verbose>0) fprintf x ;}# define Tracevv(x) {if (z_verbose>1) fprintf x ;}# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}#else# define Assert(cond,msg)# define Trace(x)# define Tracev(x)# define Tracevv(x)# define Tracec(c,x)# define Tracecv(c,x)#endifvoidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));void zcfree OF((voidpf opaque, voidpf ptr));#define ZALLOC(strm, items, size) \(*((strm)->zalloc))((strm)->opaque, (items), (size))#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}#endif /* ZUTIL_H */
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