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/* zutil.h -- internal interface and configuration of the compression library 
 * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler
 * 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. 
 */ 
 
/* @(#) $Id$ */ 
 
#ifndef ZUTIL_H
#define ZUTIL_H

#ifdef HAVE_HIDDEN 
#  define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 
#else 
#  define ZLIB_INTERNAL 
#endif 
 
#include "zlib.h" 
 
#if defined(STDC) && !defined(Z_SOLO) 
#  if !(defined(_WIN32_WCE) && defined(_MSC_VER)) 
#    include <stddef.h> 
#  endif 
#  include <string.h> 
#  include <stdlib.h> 
#endif 
 
#ifdef Z_SOLO 
   typedef long ptrdiff_t;  /* guess -- will be caught if guess is wrong */ 
#endif 
 
#ifndef local 
#  define local static 
#endif 
/* since "static" is used to mean two completely different things in C, we
   define "local" for the non-static meaning of "static", for readability
   (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 z_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 = 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 
#  ifndef Z_SOLO 
#    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 
#endif 
 
#ifdef AMIGA 
#  define OS_CODE  1
#endif 
 
#if defined(VAXC) || defined(VMS) 
#  define OS_CODE  2
#  define F_OPEN(name, mode) \ 
     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") 
#endif 
 
#ifdef __370__
#  if __TARGET_LIB__ < 0x20000000
#    define OS_CODE 4
#  elif __TARGET_LIB__ < 0x40000000
#    define OS_CODE 11
#  else
#    define OS_CODE 8
#  endif
#endif

#if defined(ATARI) || defined(atarist) 
#  define OS_CODE  5
#endif 
 
#ifdef OS2 
#  define OS_CODE  6
#  if defined(M_I86) && !defined(Z_SOLO) 
#    include <malloc.h> 
#  endif 
#endif 
 
#if defined(MACOS) || defined(TARGET_OS_MAC) 
#  define OS_CODE  7
#  ifndef Z_SOLO 
#    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 
#endif 
 
#ifdef __acorn
#  define OS_CODE 13
#endif 
 
#if defined(WIN32) && !defined(__CYGWIN__)
#  define OS_CODE  10
#endif 
 
#ifdef _BEOS_
#  define OS_CODE  16
#endif 
 
#ifdef __TOS_OS400__
#  define OS_CODE 18
#endif

#ifdef __APPLE__
#  define OS_CODE 19
#endif

#if defined(_BEOS_) || defined(RISCOS) 
#  define fdopen(fd,mode) NULL /* No fdopen() */ 
#endif 
 
#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX 
#  if defined(_WIN32_WCE) 
#    define fdopen(fd,mode) NULL /* No fdopen() */ 
#    ifndef _PTRDIFF_T_DEFINED 
       typedef int ptrdiff_t; 
#      define _PTRDIFF_T_DEFINED 
#    endif 
#  else 
#    define fdopen(fd,type)  _fdopen(fd,type) 
#  endif 
#endif 
 
#if defined(__BORLANDC__) && !defined(MSDOS) 
  #pragma warn -8004 
  #pragma warn -8008 
  #pragma warn -8066 
#endif 
 
/* provide prototypes for these when building zlib without LFS */ 
#if !defined(_WIN32) && \ 
    (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 
    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); 
    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); 
#endif 
 
        /* common defaults */ 
 
#ifndef OS_CODE 
#  define OS_CODE  3     /* assume Unix */
#endif 
 
#ifndef F_OPEN 
#  define F_OPEN(name, mode) fopen((name), (mode)) 
#endif 
 
         /* functions */ 
 
#if defined(pyr) || defined(Z_SOLO) 
#  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 
   void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); 
   int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); 
   void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); 
#endif 
 
/* Diagnostic functions */ 
#ifdef ZLIB_DEBUG
#  include <stdio.h> 
   extern int ZLIB_INTERNAL z_verbose; 
   extern void ZLIB_INTERNAL 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 
 
#ifndef Z_SOLO 
   voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, 
                                    unsigned size)); 
   void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr)); 
#endif 
 
#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);} 
 
/* Reverse the bytes in a 32-bit value */ 
#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 
                    (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 

#endif /* ZUTIL_H */