source: rtems/cpukit/zlib/zutil.h @ 98de184b

4.104.115
Last change on this file since 98de184b was 959f7df2, checked in by Ralf Corsepius <ralf.corsepius@…>, on 10/28/05 at 07:22:42

Import of zlib-1.2.2.2.tar.gz

  • Property mode set to 100644
File size: 6.6 KB
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1/* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2004 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#define ZLIB_INTERNAL
17#include "zlib.h"
18
19#ifdef STDC
20#  include <stddef.h>
21#  include <string.h>
22#  include <stdlib.h>
23#endif
24#ifdef NO_ERRNO_H
25#   ifdef _WIN32_WCE
26      /* The Microsoft C Run-Time Library for Windows CE doesn't have
27       * errno.  We define it as a global variable to simplify porting.
28       * Its value is always 0 and should not be used.  We rename it to
29       * avoid conflict with other libraries that use the same workaround.
30       */
31#     define errno z_errno
32#   endif
33    extern int errno;
34#else
35#   include <errno.h>
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 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 = (char*)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#  if defined(__TURBOC__) || defined(__BORLANDC__)
88#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
89       /* Allow compilation with ANSI keywords only enabled */
90       void _Cdecl farfree( void *block );
91       void *_Cdecl farmalloc( unsigned long nbytes );
92#    else
93#      include <alloc.h>
94#    endif
95#  else /* MSC or DJGPP */
96#    include <malloc.h>
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#endif
117
118#if defined(MACOS) || defined(TARGET_OS_MAC)
119#  define OS_CODE  0x07
120#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
121#    include <unix.h> /* for fdopen */
122#  else
123#    ifndef fdopen
124#      define fdopen(fd,mode) NULL /* No fdopen() */
125#    endif
126#  endif
127#endif
128
129#ifdef TOPS20
130#  define OS_CODE  0x0a
131#endif
132
133#ifdef WIN32
134#  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
135#    define OS_CODE  0x0b
136#  endif
137#endif
138
139#ifdef __50SERIES /* Prime/PRIMOS */
140#  define OS_CODE  0x0f
141#endif
142
143#if defined(_BEOS_) || defined(RISCOS)
144#  define fdopen(fd,mode) NULL /* No fdopen() */
145#endif
146
147#if (defined(_MSC_VER) && (_MSC_VER > 600))
148#  if defined(_WIN32_WCE)
149#    define fdopen(fd,mode) NULL /* No fdopen() */
150#    ifndef _PTRDIFF_T_DEFINED
151       typedef int ptrdiff_t;
152#      define _PTRDIFF_T_DEFINED
153#    endif
154#  else
155#    define fdopen(fd,type)  _fdopen(fd,type)
156#  endif
157#endif
158
159        /* common defaults */
160
161#ifndef OS_CODE
162#  define OS_CODE  0x03  /* assume Unix */
163#endif
164
165#ifndef F_OPEN
166#  define F_OPEN(name, mode) fopen((name), (mode))
167#endif
168
169         /* functions */
170
171#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
172#  ifndef HAVE_VSNPRINTF
173#    define HAVE_VSNPRINTF
174#  endif
175#endif
176#if defined(__CYGWIN__)
177#  ifndef HAVE_VSNPRINTF
178#    define HAVE_VSNPRINTF
179#  endif
180#endif
181#ifndef HAVE_VSNPRINTF
182#  ifdef MSDOS
183     /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
184        but for now we just assume it doesn't. */
185#    define NO_vsnprintf
186#  endif
187#  ifdef __TURBOC__
188#    define NO_vsnprintf
189#  endif
190#  ifdef WIN32
191     /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
192#    if !defined(vsnprintf) && !defined(NO_vsnprintf)
193#      define vsnprintf _vsnprintf
194#    endif
195#  endif
196#  ifdef __SASC
197#    define NO_vsnprintf
198#  endif
199#endif
200#ifdef VMS
201#  define NO_vsnprintf
202#endif
203
204#if defined(pyr)
205#  define NO_MEMCPY
206#endif
207#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
208 /* Use our own functions for small and medium model with MSC <= 5.0.
209  * You may have to use the same strategy for Borland C (untested).
210  * The __SC__ check is for Symantec.
211  */
212#  define NO_MEMCPY
213#endif
214#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
215#  define HAVE_MEMCPY
216#endif
217#ifdef HAVE_MEMCPY
218#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
219#    define zmemcpy _fmemcpy
220#    define zmemcmp _fmemcmp
221#    define zmemzero(dest, len) _fmemset(dest, 0, len)
222#  else
223#    define zmemcpy memcpy
224#    define zmemcmp memcmp
225#    define zmemzero(dest, len) memset(dest, 0, len)
226#  endif
227#else
228   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
229   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
230   extern void zmemzero OF((Bytef* dest, uInt len));
231#endif
232
233/* Diagnostic functions */
234#ifdef DEBUG
235#  include <stdio.h>
236   extern int z_verbose;
237   extern void z_error    OF((char *m));
238#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
239#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
240#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
241#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
242#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
243#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
244#else
245#  define Assert(cond,msg)
246#  define Trace(x)
247#  define Tracev(x)
248#  define Tracevv(x)
249#  define Tracec(c,x)
250#  define Tracecv(c,x)
251#endif
252
253
254voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
255void   zcfree  OF((voidpf opaque, voidpf ptr));
256
257#define ZALLOC(strm, items, size) \
258           (*((strm)->zalloc))((strm)->opaque, (items), (size))
259#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
260#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
261
262#endif /* ZUTIL_H */
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