SecurityServer/MacYarrow/zlib/zutil.h

   1 /*
   2  * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /* zutil.h -- internal interface and configuration of the compression library
  20  * Copyright (C) 1995-1998 Jean-loup Gailly.
  21  * For conditions of distribution and use, see copyright notice in zlib.h
  22  */
  23
  24 /* WARNING: this file should *not* be used by applications. It is
  25    part of the implementation of the compression library and is
  26    subject to change. Applications should only use zlib.h.
  27  */
  28
  29 /* @(#) $Id: zutil.h,v 1.1.1.1 2001/05/18 23:14:03 mb Exp $ */
  30
  31 #ifndef _Z_UTIL_H
  32 #define _Z_UTIL_H
  33
  34 #include "zlib.h"
  35
  36 #ifdef STDC
  37 #  include <stddef.h>
  38 #  include <string.h>
  39 #  include <stdlib.h>
  40 #endif
  41 #ifdef NO_ERRNO_H
  42     extern int errno;
  43 #else
  44 #   include <errno.h>
  45 #endif
  46
  47 #ifndef local
  48 #  define local static
  49 #endif
  50 /* compile with -Dlocal if your debugger can't find static symbols */
  51
  52 typedef unsigned char  uch;
  53 typedef uch FAR uchf;
  54 typedef unsigned short ush;
  55 typedef ush FAR ushf;
  56 typedef unsigned long  ulg;
  57
  58 extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
  59 /* (size given to avoid silly warnings with Visual C++) */
  60
  61 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
  62
  63 #define ERR_RETURN(strm,err) \
  64   return (strm->msg = (char*)ERR_MSG(err), (err))
  65 /* To be used only when the state is known to be valid */
  66
  67         /* common constants */
  68
  69 #ifndef DEF_WBITS
  70 #  define DEF_WBITS MAX_WBITS
  71 #endif
  72 /* default windowBits for decompression. MAX_WBITS is for compression only */
  73
  74 #if MAX_MEM_LEVEL >= 8
  75 #  define DEF_MEM_LEVEL 8
  76 #else
  77 #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  78 #endif
  79 /* default memLevel */
  80
  81 #define STORED_BLOCK 0
  82 #define STATIC_TREES 1
  83 #define DYN_TREES    2
  84 /* The three kinds of block type */
  85
  86 #define MIN_MATCH  3
  87 #define MAX_MATCH  258
  88 /* The minimum and maximum match lengths */
  89
  90 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
  91
  92         /* target dependencies */
  93
  94 #ifdef MSDOS
  95 #  define OS_CODE  0x00
  96 #  if defined(__TURBOC__) || defined(__BORLANDC__)
  97 #    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
  98        /* Allow compilation with ANSI keywords only enabled */
  99        void _Cdecl farfree( void *block );
 100        void *_Cdecl farmalloc( unsigned long nbytes );
 101 #    else
 102 #     include <alloc.h>
 103 #    endif
 104 #  else /* MSC or DJGPP */
 105 #    include <malloc.h>
 106 #  endif
 107 #endif
 108
 109 #ifdef OS2
 110 #  define OS_CODE  0x06
 111 #endif
 112
 113 #ifdef WIN32 /* Window 95 & Windows NT */
 114 #  define OS_CODE  0x0b
 115 #endif
 116
 117 #if defined(VAXC) || defined(VMS)
 118 #  define OS_CODE  0x02
 119 #  define F_OPEN(name, mode) \
 120      fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
 121 #endif
 122
 123 #ifdef AMIGA
 124 #  define OS_CODE  0x01
 125 #endif
 126
 127 #if defined(ATARI) || defined(atarist)
 128 #  define OS_CODE  0x05
 129 #endif
 130
 131 #if defined(MACOS) || defined(TARGET_OS_MAC)
 132 #  define OS_CODE  0x07
 133 #  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
 134 #    include <unix.h> /* for fdopen */
 135 #  else
 136 #    ifndef fdopen
 137 #      define fdopen(fd,mode) NULL /* No fdopen() */
 138 #    endif
 139 #  endif
 140 #endif
 141
 142 #ifdef __50SERIES /* Prime/PRIMOS */
 143 #  define OS_CODE  0x0F
 144 #endif
 145
 146 #ifdef TOPS20
 147 #  define OS_CODE  0x0a
 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))
 155 #  define fdopen(fd,type)  _fdopen(fd,type)
 156 #endif
 157
 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 #ifdef HAVE_STRERROR
 172    extern char *strerror OF((int));
 173 #  define zstrerror(errnum) strerror(errnum)
 174 #else
 175 #  define zstrerror(errnum) ""
 176 #endif
 177
 178 #if defined(pyr)
 179 #  define NO_MEMCPY
 180 #endif
 181 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
 182  /* Use our own functions for small and medium model with MSC <= 5.0.
 183   * You may have to use the same strategy for Borland C (untested).
 184   * The __SC__ check is for Symantec.
 185   */
 186 #  define NO_MEMCPY
 187 #endif
 188 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
 189 #  define HAVE_MEMCPY
 190 #endif
 191 #ifdef HAVE_MEMCPY
 192 #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
 193 #    define zmemcpy _fmemcpy
 194 #    define zmemcmp _fmemcmp
 195 #    define zmemzero(dest, len) _fmemset(dest, 0, len)
 196 #  else
 197 #    define zmemcpy memcpy
 198 #    define zmemcmp memcmp
 199 #    define zmemzero(dest, len) memset(dest, 0, len)
 200 #  endif
 201 #else
 202    extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
 203    extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
 204    extern void zmemzero OF((Bytef* dest, uInt len));
 205 #endif
 206
 207 /* Diagnostic functions */
 208 #ifdef DEBUG
 209 #  include <stdio.h>
 210    extern int z_verbose;
 211    extern void z_error    OF((char *m));
 212 #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
 213 #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
 214 #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
 215 #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
 216 #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
 217 #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
 218 #else
 219 #  define Assert(cond,msg)
 220 #  define Trace(x)
 221 #  define Tracev(x)
 222 #  define Tracevv(x)
 223 #  define Tracec(c,x)
 224 #  define Tracecv(c,x)
 225 #endif
 226
 227
 228 typedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf,
 229                                        uInt len));
 230 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
 231 void   zcfree  OF((voidpf opaque, voidpf ptr));
 232
 233 #define ZALLOC(strm, items, size) \
 234            (*((strm)->zalloc))((strm)->opaque, (items), (size))
 235 #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
 236 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
 237
 238 #endif /* _Z_UTIL_H */