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 #ifdef HAVE_HIDDEN 17 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) 18 #else 19 # define ZLIB_INTERNAL 20 #endif 21 22 #include "hammer2_zlib.h" 23 24 #ifndef local 25 # define local static 26 #endif 27 /* compile with -Dlocal if your debugger can't find static symbols */ 28 29 typedef unsigned char uch; 30 typedef uch FAR uchf; 31 typedef unsigned short ush; 32 typedef ush FAR ushf; 33 typedef unsigned long ulg; 34 35 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 36 /* (size given to avoid silly warnings with Visual C++) */ 37 38 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 39 40 #define ERR_RETURN(strm,err) \ 41 return (strm->msg = ERR_MSG(err), (err)) 42 /* To be used only when the state is known to be valid */ 43 44 /* common constants */ 45 46 #ifndef DEF_WBITS 47 # define DEF_WBITS MAX_WBITS 48 #endif 49 /* default windowBits for decompression. MAX_WBITS is for compression only */ 50 51 #if MAX_MEM_LEVEL >= 8 52 # define DEF_MEM_LEVEL 8 53 #else 54 # define DEF_MEM_LEVEL MAX_MEM_LEVEL 55 #endif 56 /* default memLevel */ 57 58 #define STORED_BLOCK 0 59 #define STATIC_TREES 1 60 #define DYN_TREES 2 61 /* The three kinds of block type */ 62 63 #define MIN_MATCH 3 64 #define MAX_MATCH 258 65 /* The minimum and maximum match lengths */ 66 67 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 68 69 /* target dependencies */ 70 71 #if defined(__BORLANDC__) && !defined(MSDOS) 72 #pragma warn -8004 73 #pragma warn -8008 74 #pragma warn -8066 75 #endif 76 77 /* provide prototypes for these when building zlib without LFS */ 78 #if !defined(_WIN32) && \ 79 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) 80 uLong adler32_combine64(uLong, uLong, z_off_t); 81 #endif 82 83 /* common defaults */ 84 85 #ifndef OS_CODE 86 # define OS_CODE 0x03 /* assume Unix */ 87 #endif 88 89 #ifndef F_OPEN 90 # define F_OPEN(name, mode) fopen((name), (mode)) 91 #endif 92 93 /* functions */ 94 95 #if defined(pyr) || defined(Z_SOLO) 96 # define NO_MEMCPY 97 #endif 98 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) 99 /* Use our own functions for small and medium model with MSC <= 5.0. 100 * You may have to use the same strategy for Borland C (untested). 101 * The __SC__ check is for Symantec. 102 */ 103 # define NO_MEMCPY 104 #endif 105 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) 106 # define HAVE_MEMCPY 107 #endif 108 #ifdef HAVE_MEMCPY 109 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ 110 # define zmemcpy _fmemcpy 111 # define zmemcmp _fmemcmp 112 # define zmemzero(dest, len) _fmemset(dest, 0, len) 113 # else 114 # define zmemcpy memcpy 115 # define zmemcmp memcmp 116 # define zmemzero(dest, len) memset(dest, 0, len) 117 # endif 118 #else 119 void ZLIB_INTERNAL zmemcpy((Bytef* dest, const Bytef* source, uInt len)); 120 int ZLIB_INTERNAL zmemcmp((const Bytef* s1, const Bytef* s2, uInt len)); 121 void ZLIB_INTERNAL zmemzero((Bytef* dest, uInt len)); 122 #endif 123 124 /* Diagnostic functions */ 125 #ifdef DEBUG 126 # include <stdio.h> 127 extern int ZLIB_INTERNAL z_verbose; 128 extern void ZLIB_INTERNAL z_error((char *m)); 129 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 130 # define Trace(x) {if (z_verbose>=0) fprintf x ;} 131 # define Tracev(x) {if (z_verbose>0) fprintf x ;} 132 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 133 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 134 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 135 #else 136 # define Assert(cond,msg) 137 # define Trace(x) 138 # define Tracev(x) 139 # define Tracevv(x) 140 # define Tracec(c,x) 141 # define Tracecv(c,x) 142 #endif 143 144 /* Reverse the bytes in a 32-bit value */ 145 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ 146 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) 147 148 #endif /* ZUTIL_H */ 149