www.pudn.com > ZLib-check.rar > zutil.h

/* zutil.h -- internal interface and configuration of the compression library 
 * Copyright (C) 1995-2002 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 1.1 2003/02/17 15:24:58 marcuso Exp $ */ 
 
#ifndef _Z_UTIL_H 
#define _Z_UTIL_H 
 
#include "zlib.h" 
 
#ifdef STDC 
#  include  
#  include  
#  include  
#endif 
#ifdef NO_ERRNO_H 
    extern int errno; 
#else 
#   include  
#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  
#    endif 
#  else /* MSC or DJGPP */ 
#    include  
#  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  /* 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  
   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) 
#endif 
 
 
typedef 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 */