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e6153040 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 */
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