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#include "../../../../include/fxcrt/fx_system.h"		/* XYQ 2007-5-22 */
17
18#ifdef HAVE_HIDDEN
19#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
20#else
21#  define ZLIB_INTERNAL
22#endif
23
24#include "zlib.h"
25
26#if defined(STDC) && !defined(Z_SOLO)
27#  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
28#    include <stddef.h>
29#  endif
30#  include <string.h>
31#  include <stdlib.h>
32#endif
33
34#ifdef Z_SOLO
35   typedef long ptrdiff_t;  /* guess -- will be caught if guess is wrong */
36#endif
37
38#ifndef local
39#  define local static
40#endif
41/* compile with -Dlocal if your debugger can't find static symbols */
42
43typedef unsigned char  uch;
44typedef uch FAR uchf;
45typedef unsigned short ush;
46typedef ush FAR ushf;
47typedef unsigned long  ulg;
48
49extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
50/* (size given to avoid silly warnings with Visual C++) */
51
52#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
53
54#define ERR_RETURN(strm,err) \
55  return (strm->msg = ERR_MSG(err), (err))
56/* To be used only when the state is known to be valid */
57
58        /* common constants */
59
60#ifndef DEF_WBITS
61#  define DEF_WBITS MAX_WBITS
62#endif
63/* default windowBits for decompression. MAX_WBITS is for compression only */
64
65#if MAX_MEM_LEVEL >= 8
66#  define DEF_MEM_LEVEL 8
67#else
68#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
69#endif
70/* default memLevel */
71
72#define STORED_BLOCK 0
73#define STATIC_TREES 1
74#define DYN_TREES    2
75/* The three kinds of block type */
76
77#define MIN_MATCH  3
78#define MAX_MATCH  258
79/* The minimum and maximum match lengths */
80
81#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
82
83        /* target dependencies */
84
85#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
86#  define OS_CODE  0x00
87#  ifndef Z_SOLO
88#    if defined(__TURBOC__) || defined(__BORLANDC__)
89#      if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
90         /* Allow compilation with ANSI keywords only enabled */
91         void _Cdecl farfree( void *block );
92         void *_Cdecl farmalloc( unsigned long nbytes );
93#      else
94#        include <alloc.h>
95#      endif
96#    else /* MSC or DJGPP */
97#      include <malloc.h>
98#    endif
99#  endif
100#endif
101
102#ifdef AMIGA
103#  define OS_CODE  0x01
104#endif
105
106#if defined(VAXC) || defined(VMS)
107#  define OS_CODE  0x02
108#  define F_OPEN(name, mode) \
109     FXSYS_fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
110#endif
111
112#if defined(ATARI) || defined(atarist)
113#  define OS_CODE  0x05
114#endif
115
116#ifdef OS2
117#  define OS_CODE  0x06
118#  if defined(M_I86) && !defined(Z_SOLO)
119#    include <malloc.h>
120#  endif
121#endif
122
123#if defined(MACOS) || defined(TARGET_OS_MAC)
124#  define OS_CODE  0x07
125#  ifndef Z_SOLO
126#    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
127#      include <unix.h> /* for fdopen */
128#    else
129#      ifndef fdopen
130#        define fdopen(fd,mode) NULL /* No fdopen() */
131#      endif
132#    endif
133#  endif
134#endif
135
136#ifdef TOPS20
137#  define OS_CODE  0x0a
138#endif
139
140#ifdef WIN32
141#  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
142#    define OS_CODE  0x0b
143#  endif
144#endif
145
146#ifdef __50SERIES /* Prime/PRIMOS */
147#  define OS_CODE  0x0f
148#endif
149
150#if defined(_BEOS_) || defined(RISCOS)
151#  define fdopen(fd,mode) NULL /* No fdopen() */
152#endif
153
154#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
155#  if defined(_WIN32_WCE)
156#    define fdopen(fd,mode) NULL /* No fdopen() */
157#    ifndef _PTRDIFF_T_DEFINED
158       typedef int ptrdiff_t;
159#      define _PTRDIFF_T_DEFINED
160#    endif
161#  else
162#    define fdopen(fd,type)  _fdopen(fd,type)
163#  endif
164#endif
165
166#if defined(__BORLANDC__) && !defined(MSDOS)
167  #pragma warn -8004
168  #pragma warn -8008
169  #pragma warn -8066
170#endif
171
172/* provide prototypes for these when building zlib without LFS */
173#if !defined(_WIN32) && \
174    (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
175    ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
176    ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
177#endif
178
179        /* common defaults */
180
181#ifndef OS_CODE
182#  define OS_CODE  0x03  /* assume Unix */
183#endif
184
185#ifndef F_OPEN
186#  define F_OPEN(name, mode) FXSYS_fopen((name), (mode))
187#endif
188
189         /* functions */
190
191#if defined(pyr) || defined(Z_SOLO)
192#  define NO_MEMCPY
193#endif
194#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
195 /* Use our own functions for small and medium model with MSC <= 5.0.
196  * You may have to use the same strategy for Borland C (untested).
197  * The __SC__ check is for Symantec.
198  */
199#  define NO_MEMCPY
200#endif
201#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
202#  define HAVE_MEMCPY
203#endif
204#ifdef HAVE_MEMCPY
205#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
206#    define zmemcpy _fmemcpy
207#    define zmemcmp _fmemcmp
208#    define zmemzero(dest, len) _fmemset(dest, 0, len)
209#  else
210#    define zmemcpy FXSYS_memcpy32
211#    define zmemcmp FXSYS_memcmp32
212#    define zmemzero(dest, len) FXSYS_memset32(dest, 0, len)
213#  endif
214#else
215   void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
216   int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
217   void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
218#endif
219
220/* Diagnostic functions */
221#ifdef DEBUG
222#  include <stdio.h>
223   extern int ZLIB_INTERNAL z_verbose;
224   extern void ZLIB_INTERNAL z_error OF((char *m));
225#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
226#  define Trace(x) {if (z_verbose>=0) FXSYS_fprintf x ;}
227#  define Tracev(x) {if (z_verbose>0) FXSYS_fprintf x ;}
228#  define Tracevv(x) {if (z_verbose>1) FXSYS_fprintf x ;}
229#  define Tracec(c,x) {if (z_verbose>0 && (c)) FXSYS_fprintf x ;}
230#  define Tracecv(c,x) {if (z_verbose>1 && (c)) FXSYS_fprintf x ;}
231#else
232#  define Assert(cond,msg)
233#  define Trace(x)
234#  define Tracev(x)
235#  define Tracevv(x)
236#  define Tracec(c,x)
237#  define Tracecv(c,x)
238#endif
239
240#ifndef Z_SOLO
241   voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
242                                    unsigned size));
243   void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
244#endif
245
246#define ZALLOC(strm, items, size) \
247           (*((strm)->zalloc))((strm)->opaque, (items), (size))
248#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
249#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
250
251/* Reverse the bytes in a 32-bit value */
252#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
253                    (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
254
255#endif /* ZUTIL_H */
256