zlib/zutil.h

   1 /* zutil.h -- internal interface and configuration of the compression library
   2  * Copyright (C) 1995-2005 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 #ifdef STDC
  22 #  ifndef _WIN32_WCE
  23 #    include <stddef.h>
  24 #  endif
  25 #  include <string.h>
  26 #  include <stdlib.h>
  27 #endif
  28 #ifdef NO_ERRNO_H
  29 #   ifdef _WIN32_WCE
  30       /* The Microsoft C Run-Time Library for Windows CE doesn't have
  31        * errno.  We define it as a global variable to simplify porting.
  32        * Its value is always 0 and should not be used.  We rename it to
  33        * avoid conflict with other libraries that use the same workaround.
  34        */
  35 #     define errno z_errno
  36 #   endif
  37     extern int errno;
  38 #else
  39 #  ifndef _WIN32_WCE
  40 #    include <errno.h>
  41 #  endif
  42 #endif
  43 #endif
  44
  45 #ifndef local
  46 #  define local static
  47 #endif
  48 /* compile with -Dlocal if your debugger can't find static symbols */
  49
  50 typedef unsigned char  uch;
  51 typedef uch FAR uchf;
  52 typedef unsigned short ush;
  53 typedef ush FAR ushf;
  54 typedef unsigned long  ulg;
  55
  56 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
  57 /* (size given to avoid silly warnings with Visual C++) */
  58
  59 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
  60
  61 #define ERR_RETURN(strm,err) \
  62   return (strm->msg = (char*)ERR_MSG(err), (err))
  63 /* To be used only when the state is known to be valid */
  64
  65         /* common constants */
  66
  67 #ifndef DEF_WBITS
  68 #  define DEF_WBITS MAX_WBITS
  69 #endif
  70 /* default windowBits for decompression. MAX_WBITS is for compression only */
  71
  72 #if MAX_MEM_LEVEL >= 8
  73 #  define DEF_MEM_LEVEL 8
  74 #else
  75 #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
  76 #endif
  77 /* default memLevel */
  78
  79 #define STORED_BLOCK 0
  80 #define STATIC_TREES 1
  81 #define DYN_TREES    2
  82 /* The three kinds of block type */
  83
  84 #define MIN_MATCH  3
  85 #define MAX_MATCH  258
  86 /* The minimum and maximum match lengths */
  87
  88 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
  89
  90         /* target dependencies */
  91
  92 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
  93 #  define OS_CODE  0x00
  94 #  if defined(__TURBOC__) || defined(__BORLANDC__)
  95 #    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
  96        /* Allow compilation with ANSI keywords only enabled */
  97        void _Cdecl farfree( void *block );
  98        void *_Cdecl farmalloc( unsigned long nbytes );
  99 #    else
 100 #      include <alloc.h>
 101 #    endif
 102 #  else /* MSC or DJGPP */
 103 #    include <malloc.h>
 104 #  endif
 105 #endif
 106
 107 #ifdef AMIGA
 108 #  define OS_CODE  0x01
 109 #endif
 110
 111 #if defined(VAXC) || defined(VMS)
 112 #  define OS_CODE  0x02
 113 #  define F_OPEN(name, mode) \
 114      fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
 115 #endif
 116
 117 #if defined(ATARI) || defined(atarist)
 118 #  define OS_CODE  0x05
 119 #endif
 120
 121 #ifdef OS2
 122 #  define OS_CODE  0x06
 123 #  ifdef M_I86
 124      #include <malloc.h>
 125 #  endif
 126 #endif
 127
 128 #if defined(MACOS) || defined(TARGET_OS_MAC)
 129 #  define OS_CODE  0x07
 130 #  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
 131 #    include <unix.h> /* for fdopen */
 132 #  else
 133 #    ifndef fdopen
 134 #      define fdopen(fd,mode) NULL /* No fdopen() */
 135 #    endif
 136 #  endif
 137 #endif
 138
 139 #ifdef TOPS20
 140 #  define OS_CODE  0x0a
 141 #endif
 142
 143 #ifdef WIN32
 144 #  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
 145 #    define OS_CODE  0x0b
 146 #  endif
 147 #endif
 148
 149 #ifdef __50SERIES /* Prime/PRIMOS */
 150 #  define OS_CODE  0x0f
 151 #endif
 152
 153 #if defined(_BEOS_) || defined(RISCOS)
 154 #  define fdopen(fd,mode) NULL /* No fdopen() */
 155 #endif
 156
 157 #if (defined(_MSC_VER) && (_MSC_VER > 600))
 158 #  if defined(_WIN32_WCE)
 159 #    define fdopen(fd,mode) NULL /* No fdopen() */
 160 #    ifndef _PTRDIFF_T_DEFINED
 161        typedef int ptrdiff_t;
 162 #      define _PTRDIFF_T_DEFINED
 163 #    endif
 164 #  else
 165 #    define fdopen(fd,type)  _fdopen(fd,type)
 166 #  endif
 167 #endif
 168
 169         /* common defaults */
 170
 171 #ifndef OS_CODE
 172 #  define OS_CODE  0x03  /* assume Unix */
 173 #endif
 174
 175 #ifndef F_OPEN
 176 #  define F_OPEN(name, mode) fopen((name), (mode))
 177 #endif
 178
 179          /* functions */
 180
 181 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
 182 #  ifndef HAVE_VSNPRINTF
 183 #    define HAVE_VSNPRINTF
 184 #  endif
 185 #endif
 186 #if defined(__CYGWIN__)
 187 #  ifndef HAVE_VSNPRINTF
 188 #    define HAVE_VSNPRINTF
 189 #  endif
 190 #endif
 191 #ifndef HAVE_VSNPRINTF
 192 #  ifdef MSDOS
 193      /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
 194         but for now we just assume it doesn't. */
 195 #    define NO_vsnprintf
 196 #  endif
 197 #  ifdef __TURBOC__
 198 #    define NO_vsnprintf
 199 #  endif
 200 #  ifdef WIN32
 201      /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
 202 #    if !defined(vsnprintf) && !defined(NO_vsnprintf)
 203 #      define vsnprintf _vsnprintf
 204 #    endif
 205 #  endif
 206 #  ifdef __SASC
 207 #    define NO_vsnprintf
 208 #  endif
 209 #endif
 210 #ifdef VMS
 211 #  define NO_vsnprintf
 212 #endif
 213
 214 #if defined(pyr)
 215 #  define NO_MEMCPY
 216 #endif
 217 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
 218  /* Use our own functions for small and medium model with MSC <= 5.0.
 219   * You may have to use the same strategy for Borland C (untested).
 220   * The __SC__ check is for Symantec.
 221   */
 222 #  define NO_MEMCPY
 223 #endif
 224 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
 225 #  define HAVE_MEMCPY
 226 #endif
 227 #ifdef HAVE_MEMCPY
 228 #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
 229 #    define zmemcpy _fmemcpy
 230 #    define zmemcmp _fmemcmp
 231 #    define zmemzero(dest, len) _fmemset(dest, 0, len)
 232 #  else
 233 #    define zmemcpy memcpy
 234 #    define zmemcmp memcmp
 235 #    define zmemzero(dest, len) memset(dest, 0, len)
 236 #  endif
 237 #else
 238    extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
 239    extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
 240    extern void zmemzero OF((Bytef* dest, uInt len));
 241 #endif
 242
 243 /* Diagnostic functions */
 244 #ifdef DEBUG
 245 #  include <stdio.h>
 246    extern int z_verbose;
 247    extern void z_error    OF((char *m));
 248 #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
 249 #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
 250 #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
 251 #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
 252 #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
 253 #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
 254 #else
 255 #  define Assert(cond,msg)
 256 #  define Trace(x)
 257 #  define Tracev(x)
 258 #  define Tracevv(x)
 259 #  define Tracec(c,x)
 260 #  define Tracecv(c,x)
 261 #endif
 262
 263
 264 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
 265 void   zcfree  OF((voidpf opaque, voidpf ptr));
 266
 267 #define ZALLOC(strm, items, size) \
 268            (*((strm)->zalloc))((strm)->opaque, (items), (size))
 269 #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
 270 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
 271
 272 #endif /* ZUTIL_H */