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tetex-bin  3.0
zutil.h
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00001 /* zutil.h -- internal interface and configuration of the compression library
00002  * Copyright (C) 1995-2003 Jean-loup Gailly.
00003  * For conditions of distribution and use, see copyright notice in zlib.h
00004  */
00005 
00006 /* WARNING: this file should *not* be used by applications. It is
00007    part of the implementation of the compression library and is
00008    subject to change. Applications should only use zlib.h.
00009  */
00010 
00011 /* @(#) $Id$ */
00012 
00013 #ifndef ZUTIL_H
00014 #define ZUTIL_H
00015 
00016 #define ZLIB_INTERNAL
00017 #include "zlib.h"
00018 
00019 #ifdef STDC
00020 #  include <stddef.h>
00021 #  include <string.h>
00022 #  include <stdlib.h>
00023 #endif
00024 #ifdef NO_ERRNO_H
00025     extern int errno;
00026 #else
00027 #   include <errno.h>
00028 #endif
00029 
00030 #ifndef local
00031 #  define local static
00032 #endif
00033 /* compile with -Dlocal if your debugger can't find static symbols */
00034 
00035 typedef unsigned char  uch;
00036 typedef uch FAR uchf;
00037 typedef unsigned short ush;
00038 typedef ush FAR ushf;
00039 typedef unsigned long  ulg;
00040 
00041 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
00042 /* (size given to avoid silly warnings with Visual C++) */
00043 
00044 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
00045 
00046 #define ERR_RETURN(strm,err) \
00047   return (strm->msg = (char*)ERR_MSG(err), (err))
00048 /* To be used only when the state is known to be valid */
00049 
00050         /* common constants */
00051 
00052 #ifndef DEF_WBITS
00053 #  define DEF_WBITS MAX_WBITS
00054 #endif
00055 /* default windowBits for decompression. MAX_WBITS is for compression only */
00056 
00057 #if MAX_MEM_LEVEL >= 8
00058 #  define DEF_MEM_LEVEL 8
00059 #else
00060 #  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
00061 #endif
00062 /* default memLevel */
00063 
00064 #define STORED_BLOCK 0
00065 #define STATIC_TREES 1
00066 #define DYN_TREES    2
00067 /* The three kinds of block type */
00068 
00069 #define MIN_MATCH  3
00070 #define MAX_MATCH  258
00071 /* The minimum and maximum match lengths */
00072 
00073 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
00074 
00075         /* target dependencies */
00076 
00077 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
00078 #  define OS_CODE  0x00
00079 #  if defined(__TURBOC__) || defined(__BORLANDC__)
00080 #    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
00081        /* Allow compilation with ANSI keywords only enabled */
00082        void _Cdecl farfree( void *block );
00083        void *_Cdecl farmalloc( unsigned long nbytes );
00084 #    else
00085 #      include <alloc.h>
00086 #    endif
00087 #  else /* MSC or DJGPP */
00088 #    include <malloc.h>
00089 #  endif
00090 #endif
00091 
00092 #ifdef AMIGA
00093 #  define OS_CODE  0x01
00094 #endif
00095 
00096 #if defined(VAXC) || defined(VMS)
00097 #  define OS_CODE  0x02
00098 #  define F_OPEN(name, mode) \
00099      fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
00100 #endif
00101 
00102 #if defined(ATARI) || defined(atarist)
00103 #  define OS_CODE  0x05
00104 #endif
00105 
00106 #ifdef OS2
00107 #  define OS_CODE  0x06
00108 #endif
00109 
00110 #if defined(MACOS) || defined(TARGET_OS_MAC)
00111 #  define OS_CODE  0x07
00112 #  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
00113 #    include <unix.h> /* for fdopen */
00114 #  else
00115 #    ifndef fdopen
00116 #      define fdopen(fd,mode) NULL /* No fdopen() */
00117 #    endif
00118 #  endif
00119 #endif
00120 
00121 #ifdef TOPS20
00122 #  define OS_CODE  0x0a
00123 #endif
00124 
00125 #ifdef WIN32
00126 #  ifndef __CYGWIN__  /* Cygwin is Unix, not Win32 */
00127 #    define OS_CODE  0x0b
00128 #  endif
00129 #endif
00130 
00131 #ifdef __50SERIES /* Prime/PRIMOS */
00132 #  define OS_CODE  0x0f
00133 #endif
00134 
00135 #if defined(_BEOS_) || defined(RISCOS)
00136 #  define fdopen(fd,mode) NULL /* No fdopen() */
00137 #endif
00138 
00139 #if (defined(_MSC_VER) && (_MSC_VER > 600))
00140 #  if defined(_WIN32_WCE)
00141 #    define fdopen(fd,mode) NULL /* No fdopen() */
00142 #    ifndef _PTRDIFF_T_DEFINED
00143        typedef int ptrdiff_t;
00144 #      define _PTRDIFF_T_DEFINED
00145 #    endif
00146 #  else
00147 #    define fdopen(fd,type)  _fdopen(fd,type)
00148 #  endif
00149 #endif
00150 
00151         /* common defaults */
00152 
00153 #ifndef OS_CODE
00154 #  define OS_CODE  0x03  /* assume Unix */
00155 #endif
00156 
00157 #ifndef F_OPEN
00158 #  define F_OPEN(name, mode) fopen((name), (mode))
00159 #endif
00160 
00161          /* functions */
00162 
00163 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
00164 #  ifndef HAVE_VSNPRINTF
00165 #    define HAVE_VSNPRINTF
00166 #  endif
00167 #endif
00168 #if defined(__CYGWIN__)
00169 #  ifndef HAVE_VSNPRINTF
00170 #    define HAVE_VSNPRINTF
00171 #  endif
00172 #endif
00173 #ifndef HAVE_VSNPRINTF
00174 #  ifdef MSDOS
00175      /* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
00176         but for now we just assume it doesn't. */
00177 #    define NO_vsnprintf
00178 #  endif
00179 #  ifdef __TURBOC__
00180 #    define NO_vsnprintf
00181 #  endif
00182 #  ifdef WIN32
00183      /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
00184 #    if !defined(vsnprintf) && !defined(NO_vsnprintf)
00185 #      define vsnprintf _vsnprintf
00186 #    endif
00187 #  endif
00188 #  ifdef __SASC
00189 #    define NO_vsnprintf
00190 #  endif
00191 #endif
00192 
00193 #ifdef HAVE_STRERROR
00194    extern char *strerror OF((int));
00195 #  define zstrerror(errnum) strerror(errnum)
00196 #else
00197 #  define zstrerror(errnum) ""
00198 #endif
00199 
00200 #if defined(pyr)
00201 #  define NO_MEMCPY
00202 #endif
00203 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
00204  /* Use our own functions for small and medium model with MSC <= 5.0.
00205   * You may have to use the same strategy for Borland C (untested).
00206   * The __SC__ check is for Symantec.
00207   */
00208 #  define NO_MEMCPY
00209 #endif
00210 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
00211 #  define HAVE_MEMCPY
00212 #endif
00213 #ifdef HAVE_MEMCPY
00214 #  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
00215 #    define zmemcpy _fmemcpy
00216 #    define zmemcmp _fmemcmp
00217 #    define zmemzero(dest, len) _fmemset(dest, 0, len)
00218 #  else
00219 #    define zmemcpy memcpy
00220 #    define zmemcmp memcmp
00221 #    define zmemzero(dest, len) memset(dest, 0, len)
00222 #  endif
00223 #else
00224    extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
00225    extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
00226    extern void zmemzero OF((Bytef* dest, uInt len));
00227 #endif
00228 
00229 /* Diagnostic functions */
00230 #ifdef DEBUG
00231 #  include <stdio.h>
00232    extern int z_verbose;
00233    extern void z_error    OF((char *m));
00234 #  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
00235 #  define Trace(x) {if (z_verbose>=0) fprintf x ;}
00236 #  define Tracev(x) {if (z_verbose>0) fprintf x ;}
00237 #  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
00238 #  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
00239 #  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
00240 #else
00241 #  define Assert(cond,msg)
00242 #  define Trace(x)
00243 #  define Tracev(x)
00244 #  define Tracevv(x)
00245 #  define Tracec(c,x)
00246 #  define Tracecv(c,x)
00247 #endif
00248 
00249 
00250 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
00251 void   zcfree  OF((voidpf opaque, voidpf ptr));
00252 
00253 #define ZALLOC(strm, items, size) \
00254            (*((strm)->zalloc))((strm)->opaque, (items), (size))
00255 #define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
00256 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
00257 
00258 #endif /* ZUTIL_H */