1 /* zutil.h -- internal interface and configuration of the compression library 2 * Copyright (C) 1995-2003 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 "zlib.h" 18 19 #ifdef STDC 20 # include <stddef.h> 21 # include <string.h> 22 # include <stdlib.h> 23 #endif 24 #ifdef NO_ERRNO_H 25 extern int errno; 26 #else 27 # include <errno.h> 28 #endif 29 30 #ifndef local 31 # define local static 32 #endif 33 /* compile with -Dlocal if your debugger can't find static symbols */ 34 35 typedef unsigned char uch; 36 typedef uch FAR uchf; 37 typedef unsigned short ush; 38 typedef ush FAR ushf; 39 typedef unsigned long ulg; 40 41 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 42 /* (size given to avoid silly warnings with Visual C++) */ 43 44 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 45 46 #define ERR_RETURN(strm,err) \ 47 return (strm->msg = (char*)ERR_MSG(err), (err)) 48 /* To be used only when the state is known to be valid */ 49 50 /* common constants */ 51 52 #ifndef DEF_WBITS 53 # define DEF_WBITS MAX_WBITS 54 #endif 55 /* default windowBits for decompression. MAX_WBITS is for compression only */ 56 57 #if MAX_MEM_LEVEL >= 8 58 # define DEF_MEM_LEVEL 8 59 #else 60 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 61 #endif 62 /* default memLevel */ 63 64 #define STORED_BLOCK 0 65 #define STATIC_TREES 1 66 #define DYN_TREES 2 67 /* The three kinds of block type */ 68 69 #define MIN_MATCH 3 70 #define MAX_MATCH 258 71 /* The minimum and maximum match lengths */ 72 73 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 74 75 /* target dependencies */ 76 77 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) 78 # define OS_CODE 0x00 79 # if defined(__TURBOC__) || defined(__BORLANDC__) 80 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) 81 /* Allow compilation with ANSI keywords only enabled */ 82 void _Cdecl farfree( void *block ); 83 void *_Cdecl farmalloc( unsigned long nbytes ); 84 # else 85 # include <alloc.h> 86 # endif 87 # else /* MSC or DJGPP */ 88 # include <malloc.h> 89 # endif 90 #endif 91 92 93 #if (defined(_MSC_VER) && (_MSC_VER > 600)) 94 # if defined(_WIN32_WCE) 95 # define fdopen(fd,mode) NULL /* No fdopen() */ 96 # ifndef _PTRDIFF_T_DEFINED 97 typedef int ptrdiff_t; 98 # define _PTRDIFF_T_DEFINED 99 # endif 100 # else 101 # define fdopen(fd,type) _fdopen(fd,type) 102 # endif 103 #endif 104 105 #endif /* ZUTIL_H */ 106