1/* zutil.h -- internal interface and configuration of the compression library
  2 * Copyright (C) 1995-2013 Jean-loup Gailly.
  3 * For conditions of distribution and use, see copyright notice in zlib.h
  4 */
  5
  6/* WARNING: this file should *not* be used by applications. It is
  7   part of the implementation of the compression library and is
  8   subject to change. Applications should only use zlib.h.
  9 */
 10
 11/* @(#) $Id$ */
 12
 13#ifndef ZUTIL_H
 14#define ZUTIL_H
 15
 16#ifdef HAVE_HIDDEN
 17#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
 18#else
 19#  define ZLIB_INTERNAL
 20#endif
 21
 22#include "zlib.h"
 23
 24#if defined(STDC) && !defined(Z_SOLO)
 25#  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
 26#    include <stddef.h>
 27#  endif
 28#  include <string.h>
 29#  include <stdlib.h>
 30#endif
 31
 32#ifdef Z_SOLO
 33   typedef long ptrdiff_t;  /* guess -- will be caught if guess is wrong */
 34#endif
 35
 36#ifndef local
 37#  define local static
 38#endif
 39/* compile with -Dlocal if your debugger can't find static symbols */
 40
 41typedef unsigned char  uch;
 42typedef uch FAR uchf;
 43typedef unsigned short ush;
 44typedef ush FAR ushf;
 45typedef unsigned long  ulg;
 46
 47extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
 48/* (size given to avoid silly warnings with Visual C++) */
 49
 50#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
 51
 52#define ERR_RETURN(strm,err) \
 53  return (strm->msg = ERR_MSG(err), (err))
 54/* To be used only when the state is known to be valid */
 55
 56        /* common constants */
 57
 58#ifndef DEF_WBITS
 59#  define DEF_WBITS MAX_WBITS
 60#endif
 61/* default windowBits for decompression. MAX_WBITS is for compression only */
 62
 63#if MAX_MEM_LEVEL >= 8
 64#  define DEF_MEM_LEVEL 8
 65#else
 66#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
 67#endif
 68/* default memLevel */
 69
 70#define STORED_BLOCK 0
 71#define STATIC_TREES 1
 72#define DYN_TREES    2
 73/* The three kinds of block type */
 74
 75#define MIN_MATCH  3
 76#define MAX_MATCH  258
 77/* The minimum and maximum match lengths */
 78
 79#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
 80
 81        /* target dependencies */
 82
 83#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
 84#  define OS_CODE  0x00
 85#  ifndef Z_SOLO
 86#    if defined(__TURBOC__) || defined(__BORLANDC__)
 87#      if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
 88         /* Allow compilation with ANSI keywords only enabled */
 89         void _Cdecl farfree( void *block );
 90         void *_Cdecl farmalloc( unsigned long nbytes );
 91#      else
 92#        include <alloc.h>
 93#      endif
 94#    else /* MSC or DJGPP */
 95#      include <malloc.h>
 96#    endif
 97#  endif
 98#endif
 99
100#ifdef AMIGA
101#  define OS_CODE  0x01
102#endif
103
104#if defined(VAXC) || defined(VMS)
105#  define OS_CODE  0x02
106#  define F_OPEN(name, mode) \
107     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
108#endif
109
110#if defined(ATARI) || defined(atarist)
111#  define OS_CODE  0x05
112#endif
113
114#ifdef OS2
115#  define OS_CODE  0x06
116#  if defined(M_I86) && !defined(Z_SOLO)
117#    include <malloc.h>
118#  endif
119#endif
120
121#if defined(MACOS) || defined(TARGET_OS_MAC)
122#  define OS_CODE  0x07
123#  ifndef Z_SOLO
124#    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
125#      include <unix.h> /* for fdopen */
126#    else
127#      ifndef fdopen
128#        define fdopen(fd,mode) NULL /* No fdopen() */
129#      endif
130#    endif
131#  endif
132#endif
133
134#ifdef TOPS20
135#  define OS_CODE  0x0a
136#endif
137
138#ifdef WIN32
139#  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
140#    define OS_CODE  0x0b
141#  endif
142#endif
143
144#ifdef __50SERIES /* Prime/PRIMOS */
145#  define OS_CODE  0x0f
146#endif
147
148#if defined(_BEOS_) || defined(RISCOS)
149#  define fdopen(fd,mode) NULL /* No fdopen() */
150#endif
151
152#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
153#  if defined(_WIN32_WCE)
154#    define fdopen(fd,mode) NULL /* No fdopen() */
155#    ifndef _PTRDIFF_T_DEFINED
156       typedef int ptrdiff_t;
157#      define _PTRDIFF_T_DEFINED
158#    endif
159#  else
160#    define fdopen(fd,type)  _fdopen(fd,type)
161#  endif
162#endif
163
164#if defined(__BORLANDC__) && !defined(MSDOS)
165  #pragma warn -8004
166  #pragma warn -8008
167  #pragma warn -8066
168#endif
169
170/* provide prototypes for these when building zlib without LFS */
171#if !defined(_WIN32) && \
172    (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
173    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
174    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
175#endif
176
177        /* common defaults */
178
179#ifndef OS_CODE
180#  define OS_CODE  0x03  /* assume Unix */
181#endif
182
183#ifndef F_OPEN
184#  define F_OPEN(name, mode) fopen((name), (mode))
185#endif
186
187         /* functions */
188
189#if defined(pyr) || defined(Z_SOLO)
190#  define NO_MEMCPY
191#endif
192#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
193 /* Use our own functions for small and medium model with MSC <= 5.0.
194  * You may have to use the same strategy for Borland C (untested).
195  * The __SC__ check is for Symantec.
196  */
197#  define NO_MEMCPY
198#endif
199#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
200#  define HAVE_MEMCPY
201#endif
202#ifdef HAVE_MEMCPY
203#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
204#    define zmemcpy _fmemcpy
205#    define zmemcmp _fmemcmp
206#    define zmemzero(dest, len) _fmemset(dest, 0, len)
207#  else
208#    define zmemcpy memcpy
209#    define zmemcmp memcmp
210#    define zmemzero(dest, len) memset(dest, 0, len)
211#  endif
212#else
213   void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
214   int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
215   void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
216#endif
217
218/* Diagnostic functions */
219#ifdef DEBUG
220#  include <stdio.h>
221   extern int ZLIB_INTERNAL z_verbose;
222   extern void ZLIB_INTERNAL z_error OF((char *m));
223#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
224#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
225#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
226#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
227#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
228#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
229#else
230#  define Assert(cond,msg)
231#  define Trace(x)
232#  define Tracev(x)
233#  define Tracevv(x)
234#  define Tracec(c,x)
235#  define Tracecv(c,x)
236#endif
237
238#ifndef Z_SOLO
239   voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
240                                    unsigned size));
241   void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
242#endif
243
244#define ZALLOC(strm, items, size) \
245           (*((strm)->zalloc))((strm)->opaque, (items), (size))
246#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
247#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
248
249/* Reverse the bytes in a 32-bit value */
250#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
251                    (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
252
253#endif /* ZUTIL_H */