source: trunk/poppler/freetype-2.1.10/src/gzip/zutil.h @ 2

Last change on this file since 2 was 2, checked in by Eugene Romanenko, 16 years ago

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1/* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2002 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: zutil.h,v 1.4 2003/05/21 07:39:42 werner Exp $ */
12
13#ifndef _Z_UTIL_H
14#define _Z_UTIL_H
15
16#include "zlib.h"
17
18#ifdef STDC
19#  include <stddef.h>
20#  include <string.h>
21#  include <stdlib.h>
22#endif
23#ifdef NO_ERRNO_H
24    extern int errno;
25#else
26#   include <errno.h>
27#endif
28
29#ifndef local
30#  define local static
31#endif
32/* compile with -Dlocal if your debugger can't find static symbols */
33
34typedef unsigned char  uch;
35typedef uch FAR uchf;
36typedef unsigned short ush;
37typedef ush FAR ushf;
38typedef unsigned long  ulg;
39
40
41#define ERR_RETURN(strm,err) \
42  return (strm->msg = (char*)ERR_MSG(err), (err))
43/* To be used only when the state is known to be valid */
44
45        /* common constants */
46
47#ifndef DEF_WBITS
48#  define DEF_WBITS MAX_WBITS
49#endif
50/* default windowBits for decompression. MAX_WBITS is for compression only */
51
52#if MAX_MEM_LEVEL >= 8
53#  define DEF_MEM_LEVEL 8
54#else
55#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
56#endif
57/* default memLevel */
58
59#define STORED_BLOCK 0
60#define STATIC_TREES 1
61#define DYN_TREES    2
62/* The three kinds of block type */
63
64#define MIN_MATCH  3
65#define MAX_MATCH  258
66/* The minimum and maximum match lengths */
67
68#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
69
70        /* target dependencies */
71
72#ifdef MSDOS
73#  define OS_CODE  0x00
74#  if defined(__TURBOC__) || defined(__BORLANDC__)
75#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
76       /* Allow compilation with ANSI keywords only enabled */
77       void _Cdecl farfree( void *block );
78       void *_Cdecl farmalloc( unsigned long nbytes );
79#    else
80#     include <alloc.h>
81#    endif
82#  else /* MSC or DJGPP */
83#    include <malloc.h>
84#  endif
85#endif
86
87#ifdef OS2
88#  define OS_CODE  0x06
89#endif
90
91#ifdef WIN32 /* Window 95 & Windows NT */
92#  define OS_CODE  0x0b
93#endif
94
95#if defined(VAXC) || defined(VMS)
96#  define OS_CODE  0x02
97#  define F_OPEN(name, mode) \
98     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
99#endif
100
101#ifdef AMIGA
102#  define OS_CODE  0x01
103#endif
104
105#if defined(ATARI) || defined(atarist)
106#  define OS_CODE  0x05
107#endif
108
109#if defined(MACOS) || defined(TARGET_OS_MAC)
110#  define OS_CODE  0x07
111#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
112#    include <unix.h> /* for fdopen */
113#  else
114#    ifndef fdopen
115#      define fdopen(fd,mode) NULL /* No fdopen() */
116#    endif
117#  endif
118#endif
119
120#ifdef __50SERIES /* Prime/PRIMOS */
121#  define OS_CODE  0x0F
122#endif
123
124#ifdef TOPS20
125#  define OS_CODE  0x0a
126#endif
127
128#if defined(_BEOS_) || defined(RISCOS)
129#  define fdopen(fd,mode) NULL /* No fdopen() */
130#endif
131
132#if (defined(_MSC_VER) && (_MSC_VER > 600))
133#  define fdopen(fd,type)  _fdopen(fd,type)
134#endif
135
136
137        /* Common defaults */
138
139#ifndef OS_CODE
140#  define OS_CODE  0x03  /* assume Unix */
141#endif
142
143#ifndef F_OPEN
144#  define F_OPEN(name, mode) fopen((name), (mode))
145#endif
146
147         /* functions */
148
149#ifdef HAVE_STRERROR
150   extern char *strerror OF((int));
151#  define zstrerror(errnum) strerror(errnum)
152#else
153#  define zstrerror(errnum) ""
154#endif
155
156#if defined(pyr)
157#  define NO_MEMCPY
158#endif
159#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
160 /* Use our own functions for small and medium model with MSC <= 5.0.
161  * You may have to use the same strategy for Borland C (untested).
162  * The __SC__ check is for Symantec.
163  */
164#  define NO_MEMCPY
165#endif
166#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
167#  define HAVE_MEMCPY
168#endif
169#ifdef HAVE_MEMCPY
170#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
171#    define zmemcpy _fmemcpy
172#    define zmemcmp _fmemcmp
173#    define zmemzero(dest, len) _fmemset(dest, 0, len)
174#  else
175#    define zmemcpy ft_memcpy
176#    define zmemcmp ft_memcmp
177#    define zmemzero(dest, len) ft_memset(dest, 0, len)
178#  endif
179#else
180   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
181   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
182   extern void zmemzero OF((Bytef* dest, uInt len));
183#endif
184
185/* Diagnostic functions */
186#ifdef DEBUG
187#  include <stdio.h>
188   extern int z_verbose;
189   extern void z_error    OF((char *m));
190#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
191#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
192#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
193#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
194#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
195#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
196#else
197#  define Assert(cond,msg)
198#  define Trace(x)
199#  define Tracev(x)
200#  define Tracevv(x)
201#  define Tracec(c,x)
202#  define Tracecv(c,x)
203#endif
204
205
206typedef uLong (*check_func) OF((uLong check, const Bytef *buf,
207                                       uInt len));
208local voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
209local void   zcfree  OF((voidpf opaque, voidpf ptr));
210
211#define ZALLOC(strm, items, size) \
212           (*((strm)->zalloc))((strm)->opaque, (items), (size))
213#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
214#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
215
216#endif /* _Z_UTIL_H */
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