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