zlib/zutil.h

   1 /* zutil.h -- internal interface and configuration of the compression library
   2  * Copyright (C) 1995-2013 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 "../rsync.h"
  18 #include "zlib.h"
  19
  20 #if 0
  21 #if defined(STDC) && !defined(Z_SOLO)
  22 #  if !(defined(_WIN32_WCE) && defined(_MSC_VER))
  23 #    include <stddef.h>
  24 #  endif
  25 #  include <string.h>
  26 #  include <stdlib.h>
  27 #endif
  28 #endif
  29
  30 #ifdef Z_SOLO
  31    typedef long ptrdiff_t;  /* guess -- will be caught if guess is wrong */
  32 #endif
  33
  34 #ifndef local
  35 #  define local static
  36 #endif
  37 /* compile with -Dlocal if your debugger can't find static symbols */
  38
  39 typedef unsigned char  uch;
  40 typedef uch FAR uchf;
  41 typedef unsigned short ush;
  42 typedef ush FAR ushf;
  43 typedef unsigned long  ulg;
  44
  45 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
  46 /* (size given to avoid silly warnings with Visual C++) */
  47
  48 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
  49
  50 #define ERR_RETURN(strm,err) \
  51   return (strm->msg = ERR_MSG(err), (err))
  52 /* To be used only when the state is known to be valid */
  53
  54         /* common constants */
  55
  56 #ifndef DEF_WBITS
  57 #  define DEF_WBITS MAX_WBITS
  58 #endif
  59 /* default windowBits for decompression. MAX_WBITS is for compression only */
  60
  61 #if MAX_MEM_LEVEL >= 8
  62 #  define DEF_MEM_LEVEL 8
  63 #else
  64 #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  65 #endif
  66 /* default memLevel */
  67
  68 #define STORED_BLOCK 0
  69 #define STATIC_TREES 1
  70 #define DYN_TREES    2
  71 /* The three kinds of block type */
  72
  73 #define MIN_MATCH  3
  74 #define MAX_MATCH  258
  75 /* The minimum and maximum match lengths */
  76
  77 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
  78
  79         /* target dependencies */
  80
  81 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
  82 #  define OS_CODE  0x00
  83 #  ifndef Z_SOLO
  84 #    if defined(__TURBOC__) || defined(__BORLANDC__)
  85 #      if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
  86          /* Allow compilation with ANSI keywords only enabled */
  87          void _Cdecl farfree( void *block );
  88          void *_Cdecl farmalloc( unsigned long nbytes );
  89 #      else
  90 #        include <alloc.h>
  91 #      endif
  92 #    else /* MSC or DJGPP */
  93 #      include <malloc.h>
  94 #    endif
  95 #  endif
  96 #endif
  97
  98 #ifdef AMIGA
  99 #  define OS_CODE  0x01
 100 #endif
 101
 102 #if defined(VAXC) || defined(VMS)
 103 #  define OS_CODE  0x02
 104 #  define F_OPEN(name, mode) \
 105      fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
 106 #endif
 107
 108 #if defined(ATARI) || defined(atarist)
 109 #  define OS_CODE  0x05
 110 #endif
 111
 112 #ifdef OS2
 113 #  define OS_CODE  0x06
 114 #  if defined(M_I86) && !defined(Z_SOLO)
 115 #    include <malloc.h>
 116 #  endif
 117 #endif
 118
 119 #if defined(MACOS) || defined(TARGET_OS_MAC)
 120 #  define OS_CODE  0x07
 121 #  ifndef Z_SOLO
 122 #    if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
 123 #      include <unix.h> /* for fdopen */
 124 #    else
 125 #      ifndef fdopen
 126 #        define fdopen(fd,mode) NULL /* No fdopen() */
 127 #      endif
 128 #    endif
 129 #  endif
 130 #endif
 131
 132 #ifdef TOPS20
 133 #  define OS_CODE  0x0a
 134 #endif
 135
 136 #ifdef WIN32
 137 #  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
 138 #    define OS_CODE  0x0b
 139 #  endif
 140 #endif
 141
 142 #ifdef __50SERIES /* Prime/PRIMOS */
 143 #  define OS_CODE  0x0f
 144 #endif
 145
 146 #if defined(_BEOS_) || defined(RISCOS)
 147 #  define fdopen(fd,mode) NULL /* No fdopen() */
 148 #endif
 149
 150 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
 151 #  if defined(_WIN32_WCE)
 152 #    define fdopen(fd,mode) NULL /* No fdopen() */
 153 #    ifndef _PTRDIFF_T_DEFINED
 154        typedef int ptrdiff_t;
 155 #      define _PTRDIFF_T_DEFINED
 156 #    endif
 157 #  else
 158 #    define fdopen(fd,type)  _fdopen(fd,type)
 159 #  endif
 160 #endif
 161
 162 #if defined(__BORLANDC__) && !defined(MSDOS)
 163   #pragma warn -8004
 164   #pragma warn -8008
 165   #pragma warn -8066
 166 #endif
 167
 168 /* provide prototypes for these when building zlib without LFS */
 169 #if !defined(_WIN32) && \
 170     (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
 171     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
 172     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
 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(pyr) || defined(Z_SOLO)
 188 #  define NO_MEMCPY
 189 #endif
 190 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
 191  /* Use our own functions for small and medium model with MSC <= 5.0.
 192   * You may have to use the same strategy for Borland C (untested).
 193   * The __SC__ check is for Symantec.
 194   */
 195 #  define NO_MEMCPY
 196 #endif
 197 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
 198 #  define HAVE_MEMCPY
 199 #endif
 200 #ifdef HAVE_MEMCPY
 201 #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
 202 #    define zmemcpy _fmemcpy
 203 #    define zmemcmp _fmemcmp
 204 #    define zmemzero(dest, len) _fmemset(dest, 0, len)
 205 #  else
 206 #    define zmemcpy memcpy
 207 #    define zmemcmp memcmp
 208 #    define zmemzero(dest, len) memset(dest, 0, len)
 209 #  endif
 210 #else
 211    void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
 212    int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
 213    void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
 214 #endif
 215
 216 /* Diagnostic functions */
 217 #ifdef DEBUG
 218 #  include <stdio.h>
 219    extern int ZLIB_INTERNAL z_verbose;
 220    extern void ZLIB_INTERNAL z_error OF((char *m));
 221 #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
 222 #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
 223 #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
 224 #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
 225 #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
 226 #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
 227 #else
 228 #  define Assert(cond,msg)
 229 #  define Trace(x)
 230 #  define Tracev(x)
 231 #  define Tracevv(x)
 232 #  define Tracec(c,x)
 233 #  define Tracecv(c,x)
 234 #endif
 235
 236 #ifndef Z_SOLO
 237    voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
 238                                     unsigned size));
 239    void ZLIB_INTERNAL zcfree  OF((voidpf opaque, voidpf ptr));
 240 #endif
 241
 242 #define ZALLOC(strm, items, size) \
 243            (*((strm)->zalloc))((strm)->opaque, (items), (size))
 244 #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
 245 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
 246
 247 /* Reverse the bytes in a 32-bit value */
 248 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
 249                     (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
 250
 251 #endif /* ZUTIL_H */