/modules/freetype2/src/gzip/zutil.h

  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/* @(#) $Id$ */
 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#  endif
 84#endif
 85
 86#ifdef OS2
 87#  define OS_CODE  0x06
 88#endif
 89
 90#ifdef WIN32 /* Window 95 & Windows NT */
 91#  define OS_CODE  0x0b
 92#endif
 93
 94#if defined(VAXC) || defined(VMS)
 95#  define OS_CODE  0x02
 96#  define F_OPEN(name, mode) \
 97     ft_fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
 98#endif
 99
100#ifdef AMIGA
101#  define OS_CODE  0x01
102#endif
103
104#if defined(ATARI) || defined(atarist)
105#  define OS_CODE  0x05
106#endif
107
108#if defined(MACOS) || defined(TARGET_OS_MAC)
109#  define OS_CODE  0x07
110#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
111#    include <unix.h> /* for fdopen */
112#  else
113#    ifndef fdopen
114#      define fdopen(fd,mode) NULL /* No fdopen() */
115#    endif
116#  endif
117#endif
118
119#ifdef __50SERIES /* Prime/PRIMOS */
120#  define OS_CODE  0x0F
121#endif
122
123#ifdef TOPS20
124#  define OS_CODE  0x0a
125#endif
126
127#if defined(_BEOS_) || defined(RISCOS)
128#  define fdopen(fd,mode) NULL /* No fdopen() */
129#endif
130
131#if (defined(_MSC_VER) && (_MSC_VER > 600))
132#  define fdopen(fd,type)  _fdopen(fd,type)
133#endif
134
135
136        /* Common defaults */
137
138#ifndef OS_CODE
139#  define OS_CODE  0x03  /* assume Unix */
140#endif
141
142#ifndef F_OPEN
143#  define F_OPEN(name, mode) ft_fopen((name), (mode))
144#endif
145
146         /* functions */
147
148#ifdef HAVE_STRERROR
149   extern char *strerror OF((int));
150#  define zstrerror(errnum) strerror(errnum)
151#else
152#  define zstrerror(errnum) ""
153#endif
154
155#if defined(pyr)
156#  define NO_MEMCPY
157#endif
158#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
159 /* Use our own functions for small and medium model with MSC <= 5.0.
160  * You may have to use the same strategy for Borland C (untested).
161  * The __SC__ check is for Symantec.
162  */
163#  define NO_MEMCPY
164#endif
165#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
166#  define HAVE_MEMCPY
167#endif
168#ifdef HAVE_MEMCPY
169#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
170#    define zmemcpy _fmemcpy
171#    define zmemcmp _fmemcmp
172#    define zmemzero(dest, len) _fmemset(dest, 0, len)
173#  else
174#    define zmemcpy ft_memcpy
175#    define zmemcmp ft_memcmp
176#    define zmemzero(dest, len) ft_memset(dest, 0, len)
177#  endif
178#else
179   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
180   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
181   extern void zmemzero OF((Bytef* dest, uInt len));
182#endif
183
184/* Diagnostic functions */
185#ifdef DEBUG
186#  include <stdio.h>
187   extern int z_verbose;
188   extern void z_error    OF((char *m));
189#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
190#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
191#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
192#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
193#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
194#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
195#else
196#  define Assert(cond,msg)
197#  define Trace(x)
198#  define Tracev(x)
199#  define Tracevv(x)
200#  define Tracec(c,x)
201#  define Tracecv(c,x)
202#endif
203
204
205typedef uLong (*check_func) OF((uLong check, const Bytef *buf,
206                                uInt len));
207local voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
208local void   zcfree  OF((voidpf opaque, voidpf ptr));
209
210#define ZALLOC(strm, items, size) \
211           (*((strm)->zalloc))((strm)->opaque, (items), (size))
212#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
213#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
214
215#endif /* _Z_UTIL_H */