common/dist/zlib/zutil.h

   1 /*      $NetBSD: zutil.h,v 1.4 2006/01/27 00:45:27 christos Exp $       */
   2
   3 /* zutil.h -- internal interface and configuration of the compression library
   4  * Copyright (C) 1995-2005 Jean-loup Gailly.
   5  * For conditions of distribution and use, see copyright notice in zlib.h
   6  */
   7
   8 /* WARNING: this file should *not* be used by applications. It is
   9    part of the implementation of the compression library and is
  10    subject to change. Applications should only use zlib.h.
  11  */
  12
  13 /* @(#) Id */
  14
  15 #ifndef ZUTIL_H
  16 #define ZUTIL_H
  17
  18 #define ZLIB_INTERNAL
  19 #include "zlib.h"
  20
  21 #if defined(__NetBSD__) && (defined(_KERNEL) || defined(_STANDALONE))
  22
  23 /* XXX doesn't seem to need anything at all, but this is for consistency. */
  24 #  include <lib/libkern/libkern.h>
  25
  26 #else
  27 #ifdef STDC
  28 #  ifndef _WIN32_WCE
  29 #    include <stddef.h>
  30 #  endif
  31 #  include <string.h>
  32 #  include <stdlib.h>
  33 #endif
  34 #ifdef NO_ERRNO_H
  35 #   ifdef _WIN32_WCE
  36       /* The Microsoft C Run-Time Library for Windows CE doesn't have
  37        * errno.  We define it as a global variable to simplify porting.
  38        * Its value is always 0 and should not be used.  We rename it to
  39        * avoid conflict with other libraries that use the same workaround.
  40        */
  41 #     define errno z_errno
  42 #   endif
  43     extern int errno;
  44 #else
  45 #  ifndef _WIN32_WCE
  46 #    include <errno.h>
  47 #  endif
  48 #endif
  49 #endif /* __NetBSD__ && (_KERNEL || _STANDALONE) */
  50
  51 #ifndef local
  52 #  define local static
  53 #endif
  54 /* compile with -Dlocal if your debugger can't find static symbols */
  55
  56 typedef unsigned char  uch;
  57 typedef uch FAR uchf;
  58 typedef unsigned short ush;
  59 typedef ush FAR ushf;
  60 typedef unsigned long  ulg;
  61
  62 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
  63 /* (size given to avoid silly warnings with Visual C++) */
  64
  65 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
  66
  67 #define ERR_RETURN(strm,err) \
  68   return (strm->msg = __UNCONST(ERR_MSG(err)), (err))
  69 /* To be used only when the state is known to be valid */
  70
  71         /* common constants */
  72
  73 #ifndef DEF_WBITS
  74 #  define DEF_WBITS MAX_WBITS
  75 #endif
  76 /* default windowBits for decompression. MAX_WBITS is for compression only */
  77
  78 #if MAX_MEM_LEVEL >= 8
  79 #  define DEF_MEM_LEVEL 8
  80 #else
  81 #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  82 #endif
  83 /* default memLevel */
  84
  85 #define STORED_BLOCK 0
  86 #define STATIC_TREES 1
  87 #define DYN_TREES    2
  88 /* The three kinds of block type */
  89
  90 #define MIN_MATCH  3
  91 #define MAX_MATCH  258
  92 /* The minimum and maximum match lengths */
  93
  94 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
  95
  96         /* target dependencies */
  97
  98 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
  99 #  define OS_CODE  0x00
 100 #  if defined(__TURBOC__) || defined(__BORLANDC__)
 101 #    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
 102        /* Allow compilation with ANSI keywords only enabled */
 103        void _Cdecl farfree( void *block );
 104        void *_Cdecl farmalloc( unsigned long nbytes );
 105 #    else
 106 #      include <alloc.h>
 107 #    endif
 108 #  else /* MSC or DJGPP */
 109 #    include <malloc.h>
 110 #  endif
 111 #endif
 112
 113 #ifdef AMIGA
 114 #  define OS_CODE  0x01
 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 #if defined(ATARI) || defined(atarist)
 124 #  define OS_CODE  0x05
 125 #endif
 126
 127 #ifdef OS2
 128 #  define OS_CODE  0x06
 129 #  ifdef M_I86
 130      #include <malloc.h>
 131 #  endif
 132 #endif
 133
 134 #if defined(MACOS) || defined(TARGET_OS_MAC)
 135 #  define OS_CODE  0x07
 136 #  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
 137 #    include <unix.h> /* for fdopen */
 138 #  else
 139 #    ifndef fdopen
 140 #      define fdopen(fd,mode) NULL /* No fdopen() */
 141 #    endif
 142 #  endif
 143 #endif
 144
 145 #ifdef TOPS20
 146 #  define OS_CODE  0x0a
 147 #endif
 148
 149 #ifdef WIN32
 150 #  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
 151 #    define OS_CODE  0x0b
 152 #  endif
 153 #endif
 154
 155 #ifdef __50SERIES /* Prime/PRIMOS */
 156 #  define OS_CODE  0x0f
 157 #endif
 158
 159 #if defined(_BEOS_) || defined(RISCOS)
 160 #  define fdopen(fd,mode) NULL /* No fdopen() */
 161 #endif
 162
 163 #if (defined(_MSC_VER) && (_MSC_VER > 600))
 164 #  if defined(_WIN32_WCE)
 165 #    define fdopen(fd,mode) NULL /* No fdopen() */
 166 #    ifndef _PTRDIFF_T_DEFINED
 167        typedef int ptrdiff_t;
 168 #      define _PTRDIFF_T_DEFINED
 169 #    endif
 170 #  else
 171 #    define fdopen(fd,type)  _fdopen(fd,type)
 172 #  endif
 173 #endif
 174
 175         /* common defaults */
 176
 177 #ifndef OS_CODE
 178 #  define OS_CODE  0x03  /* assume Unix */
 179 #endif
 180
 181 #ifndef F_OPEN
 182 #  define F_OPEN(name, mode) fopen((name), (mode))
 183 #endif
 184
 185          /* functions */
 186
 187 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
 188 #  ifndef HAVE_VSNPRINTF
 189 #    define HAVE_VSNPRINTF
 190 #  endif
 191 #endif
 192 #if defined(__CYGWIN__)
 193 #  ifndef HAVE_VSNPRINTF
 194 #    define HAVE_VSNPRINTF
 195 #  endif
 196 #endif
 197 #ifndef HAVE_VSNPRINTF
 198 #  ifdef MSDOS
 199      /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
 200         but for now we just assume it doesn't. */
 201 #    define NO_vsnprintf
 202 #  endif
 203 #  ifdef __TURBOC__
 204 #    define NO_vsnprintf
 205 #  endif
 206 #  ifdef WIN32
 207      /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
 208 #    if !defined(vsnprintf) && !defined(NO_vsnprintf)
 209 #      define vsnprintf _vsnprintf
 210 #    endif
 211 #  endif
 212 #  ifdef __SASC
 213 #    define NO_vsnprintf
 214 #  endif
 215 #endif
 216 #ifdef VMS
 217 #  define NO_vsnprintf
 218 #endif
 219
 220 #if defined(pyr)
 221 #  define NO_MEMCPY
 222 #endif
 223 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
 224  /* Use our own functions for small and medium model with MSC <= 5.0.
 225   * You may have to use the same strategy for Borland C (untested).
 226   * The __SC__ check is for Symantec.
 227   */
 228 #  define NO_MEMCPY
 229 #endif
 230 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
 231 #  define HAVE_MEMCPY
 232 #endif
 233 #ifdef HAVE_MEMCPY
 234 #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
 235 #    define zmemcpy _fmemcpy
 236 #    define zmemcmp _fmemcmp
 237 #    define zmemzero(dest, len) _fmemset(dest, 0, len)
 238 #  else
 239 #    define zmemcpy memcpy
 240 #    define zmemcmp memcmp
 241 #    define zmemzero(dest, len) memset(dest, 0, len)
 242 #  endif
 243 #else
 244    extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
 245    extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
 246    extern void zmemzero OF((Bytef* dest, uInt len));
 247 #endif
 248
 249 /* Diagnostic functions */
 250 #if defined(ZLIB_DEBUG) && !(defined(_KERNEL) || defined(_STANDALONE))
 251 #  include <stdio.h>
 252    extern int z_verbose;
 253    extern void z_error    OF((char *m));
 254 #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
 255 #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
 256 #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
 257 #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
 258 #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
 259 #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
 260 #else
 261 #  define Assert(cond,msg)
 262 #  define Trace(x)
 263 #  define Tracev(x)
 264 #  define Tracevv(x)
 265 #  define Tracec(c,x)
 266 #  define Tracecv(c,x)
 267 #endif
 268
 269
 270 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
 271 void   zcfree  OF((voidpf opaque, voidpf ptr));
 272
 273 #define ZALLOC(strm, items, size) \
 274            (*((strm)->zalloc))((strm)->opaque, (items), (size))
 275 #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
 276 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
 277
 278 #endif /* ZUTIL_H */