/* zutil.h -- internal interface and configuration of the compression library * Copyright (C) 1995-1998 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 is   part of the implementation of the compression library and is   subject to change. Applications should only use zlib.h. *//* @(#) $Id: zutil.h,v 1.2 2004/01/17 23:07:32 kxu Exp $ */#ifndef _Z_UTIL_H#define _Z_UTIL_H#include <zlib.h>#ifdef STDC#  include <stddef.h>#  include <string.h>#  include <stdlib.h>#endif#ifdef NO_ERRNO_H    extern int errno;#else#   include <errno.h>#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 *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 */#ifdef MSDOS#  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 OS2#  define OS_CODE  0x06#endif#ifdef WIN32 /* Window 95 & Windows NT */#  define OS_CODE  0x0b#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#ifdef AMIGA#  define OS_CODE  0x01#endif#if defined(ATARI) || defined(atarist)#  define OS_CODE  0x05#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 __50SERIES /* Prime/PRIMOS */#  define OS_CODE  0x0F#endif#ifdef TOPS20#  define OS_CODE  0x0a#endif#if defined(_BEOS_) || defined(RISCOS)#  define fdopen(fd,mode) NULL /* No fdopen() */#endif#if (defined(_MSC_VER) && (_MSC_VER > 600))#  define fdopen(fd,type)  _fdopen(fd,type)#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 */#ifdef HAVE_STRERROR   extern char *strerror OF((int));#  define zstrerror(errnum) strerror(errnum)#else#  define zstrerror(errnum) ""#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#else   extern 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)#endiftypedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf,				       uInt len));voidpf 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 /* _Z_UTIL_H */