third_party/zlib/zutil.h

   1 /* zutil.h -- internal interface and configuration of the compression library
   2  * Copyright (C) 1995-2010 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 #if ((__GNUC__-0) * 10 + __GNUC_MINOR__-0 >= 33) && !defined(NO_VIZ)
  17 #  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
  18 #else
  19 #  define ZLIB_INTERNAL
  20 #endif
  21
  22 #include "zlib.h"
  23
  24 #ifdef STDC
  25 #  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
  26 #    include <stddef.h>
  27 #  endif
  28 #  include <string.h>
  29 #  include <stdlib.h>
  30 #endif
  31 #ifdef NO_ERRNO_H
  32 #   ifdef _WIN32_WCE
  33       /* The Microsoft C Run-Time Library for Windows CE doesn't have
  34        * errno.  We define it as a global variable to simplify porting.
  35        * Its value is always 0 and should not be used.  We rename it to
  36        * avoid conflict with other libraries that use the same workaround.
  37        */
  38 #     define errno z_errno
  39 #   endif
  40     extern int errno;
  41 #else
  42 #  ifndef _WIN32_WCE
  43 #    include <errno.h>
  44 #  endif
  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 * const 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 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
  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 AMIGA
 110 #  define OS_CODE  0x01
 111 #endif
 112
 113 #if defined(VAXC) || defined(VMS)
 114 #  define OS_CODE  0x02
 115 #  define F_OPEN(name, mode) \
 116      fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
 117 #endif
 118
 119 #if defined(ATARI) || defined(atarist)
 120 #  define OS_CODE  0x05
 121 #endif
 122
 123 #ifdef OS2
 124 #  define OS_CODE  0x06
 125 #  ifdef M_I86
 126 #    include <malloc.h>
 127 #  endif
 128 #endif
 129
 130 #if defined(MACOS) || defined(TARGET_OS_MAC)
 131 #  define OS_CODE  0x07
 132 #  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
 133 #    include <unix.h> /* for fdopen */
 134 #  else
 135 #    ifndef fdopen
 136 #      define fdopen(fd,mode) NULL /* No fdopen() */
 137 #    endif
 138 #  endif
 139 #endif
 140
 141 #ifdef TOPS20
 142 #  define OS_CODE  0x0a
 143 #endif
 144
 145 #ifdef _MSC_VER
 146 #define zalign(x) __declspec(align(x))
 147 #else
 148 #define zalign(x) __attribute__((aligned((x))))
 149 #endif
 150
 151 #ifdef WIN32
 152 #  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
 153 #    define OS_CODE  0x0b
 154 #  endif
 155 #endif
 156
 157 #ifdef __50SERIES /* Prime/PRIMOS */
 158 #  define OS_CODE  0x0f
 159 #endif
 160
 161 #if defined(_BEOS_) || defined(RISCOS)
 162 #  define fdopen(fd,mode) NULL /* No fdopen() */
 163 #endif
 164
 165 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
 166 #  if defined(_WIN32_WCE)
 167 #    define fdopen(fd,mode) NULL /* No fdopen() */
 168 #    ifndef _PTRDIFF_T_DEFINED
 169        typedef int ptrdiff_t;
 170 #      define _PTRDIFF_T_DEFINED
 171 #    endif
 172 #  else
 173 #    define fdopen(fd,type)  _fdopen(fd,type)
 174 #  endif
 175 #endif
 176
 177 #if defined(__BORLANDC__)
 178   #pragma warn -8004
 179   #pragma warn -8008
 180   #pragma warn -8066
 181 #endif
 182
 183 /* provide prototypes for these when building zlib without LFS */
 184 #if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
 185     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
 186     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
 187 #endif
 188
 189         /* common defaults */
 190
 191 #ifndef OS_CODE
 192 #  define OS_CODE  0x03  /* assume Unix */
 193 #endif
 194
 195 #ifndef F_OPEN
 196 #  define F_OPEN(name, mode) fopen((name), (mode))
 197 #endif
 198
 199          /* functions */
 200
 201 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
 202 #  ifndef HAVE_VSNPRINTF
 203 #    define HAVE_VSNPRINTF
 204 #  endif
 205 #endif
 206 #if defined(__CYGWIN__)
 207 #  ifndef HAVE_VSNPRINTF
 208 #    define HAVE_VSNPRINTF
 209 #  endif
 210 #endif
 211 #ifndef HAVE_VSNPRINTF
 212 #  ifdef MSDOS
 213      /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
 214         but for now we just assume it doesn't. */
 215 #    define NO_vsnprintf
 216 #  endif
 217 #  ifdef __TURBOC__
 218 #    define NO_vsnprintf
 219 #  endif
 220 #  ifdef WIN32
 221      /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
 222 #    if !defined(vsnprintf) && !defined(NO_vsnprintf)
 223 #      if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
 224 #         define vsnprintf _vsnprintf
 225 #      endif
 226 #    endif
 227 #  endif
 228 #  ifdef __SASC
 229 #    define NO_vsnprintf
 230 #  endif
 231 #endif
 232 #ifdef VMS
 233 #  define NO_vsnprintf
 234 #endif
 235
 236 #if defined(pyr)
 237 #  define NO_MEMCPY
 238 #endif
 239 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
 240  /* Use our own functions for small and medium model with MSC <= 5.0.
 241   * You may have to use the same strategy for Borland C (untested).
 242   * The __SC__ check is for Symantec.
 243   */
 244 #  define NO_MEMCPY
 245 #endif
 246 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
 247 #  define HAVE_MEMCPY
 248 #endif
 249 #ifdef HAVE_MEMCPY
 250 #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
 251 #    define zmemcpy _fmemcpy
 252 #    define zmemcmp _fmemcmp
 253 #    define zmemzero(dest, len) _fmemset(dest, 0, len)
 254 #  else
 255 #    define zmemcpy memcpy
 256 #    define zmemcmp memcmp
 257 #    define zmemzero(dest, len) memset(dest, 0, len)
 258 #  endif
 259 #else
 260    void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
 261    int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
 262    void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
 263 #endif
 264
 265 /* Diagnostic functions */
 266 #ifdef DEBUG
 267 #  include <stdio.h>
 268    extern int ZLIB_INTERNAL z_verbose;
 269    extern void ZLIB_INTERNAL z_error OF((char *m));
 270 #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
 271 #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
 272 #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
 273 #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
 274 #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
 275 #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
 276 #else
 277 #  define Assert(cond,msg)
 278 #  define Trace(x)
 279 #  define Tracev(x)
 280 #  define Tracevv(x)
 281 #  define Tracec(c,x)
 282 #  define Tracecv(c,x)
 283 #endif
 284
 285
 286 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
 287                         unsigned size));
 288 void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
 289
 290 #define ZALLOC(strm, items, size) \
 291            (*((strm)->zalloc))((strm)->opaque, (items), (size))
 292 #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
 293 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
 294
 295 #endif /* ZUTIL_H */