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Rev | Author | Line No. | Line |
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1896 | serge | 1 | /* zutil.h -- internal interface and configuration of the compression library |
3926 | Serge | 2 | * Copyright (C) 1995-2013 Jean-loup Gailly. |
1896 | serge | 3 | * For conditions of distribution and use, see copyright notice in zlib.h |
4 | */ |
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5 | |||
6 | /* WARNING: this file should *not* be used by applications. It is |
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7 | part of the implementation of the compression library and is |
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8 | subject to change. Applications should only use zlib.h. |
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9 | */ |
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10 | |||
11 | /* @(#) $Id$ */ |
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12 | |||
13 | #ifndef ZUTIL_H |
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14 | #define ZUTIL_H |
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15 | |||
3926 | Serge | 16 | #ifdef HAVE_HIDDEN |
1896 | serge | 17 | # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) |
18 | #else |
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19 | # define ZLIB_INTERNAL |
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20 | #endif |
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21 | |||
22 | #include "zlib.h" |
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23 | |||
3926 | Serge | 24 | #if defined(STDC) && !defined(Z_SOLO) |
1896 | serge | 25 | # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) |
26 | # include |
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27 | # endif |
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28 | # include |
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29 | # include |
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30 | #endif |
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31 | |||
3926 | Serge | 32 | #ifdef Z_SOLO |
33 | typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ |
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34 | #endif |
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35 | |||
1896 | serge | 36 | #ifndef local |
37 | # define local static |
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38 | #endif |
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39 | /* compile with -Dlocal if your debugger can't find static symbols */ |
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40 | |||
41 | typedef unsigned char uch; |
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42 | typedef uch FAR uchf; |
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43 | typedef unsigned short ush; |
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44 | typedef ush FAR ushf; |
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45 | typedef unsigned long ulg; |
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46 | |||
3926 | Serge | 47 | extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
1896 | serge | 48 | /* (size given to avoid silly warnings with Visual C++) */ |
49 | |||
50 | #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
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51 | |||
52 | #define ERR_RETURN(strm,err) \ |
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3926 | Serge | 53 | return (strm->msg = ERR_MSG(err), (err)) |
1896 | serge | 54 | /* To be used only when the state is known to be valid */ |
55 | |||
56 | /* common constants */ |
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57 | |||
58 | #ifndef DEF_WBITS |
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59 | # define DEF_WBITS MAX_WBITS |
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60 | #endif |
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61 | /* default windowBits for decompression. MAX_WBITS is for compression only */ |
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62 | |||
63 | #if MAX_MEM_LEVEL >= 8 |
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64 | # define DEF_MEM_LEVEL 8 |
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65 | #else |
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66 | # define DEF_MEM_LEVEL MAX_MEM_LEVEL |
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67 | #endif |
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68 | /* default memLevel */ |
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69 | |||
70 | #define STORED_BLOCK 0 |
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71 | #define STATIC_TREES 1 |
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72 | #define DYN_TREES 2 |
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73 | /* The three kinds of block type */ |
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74 | |||
75 | #define MIN_MATCH 3 |
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76 | #define MAX_MATCH 258 |
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77 | /* The minimum and maximum match lengths */ |
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78 | |||
79 | #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
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80 | |||
81 | /* target dependencies */ |
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82 | |||
83 | #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
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84 | # define OS_CODE 0x00 |
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3926 | Serge | 85 | # ifndef Z_SOLO |
86 | # if defined(__TURBOC__) || defined(__BORLANDC__) |
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87 | # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
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88 | /* Allow compilation with ANSI keywords only enabled */ |
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89 | void _Cdecl farfree( void *block ); |
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90 | void *_Cdecl farmalloc( unsigned long nbytes ); |
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91 | # else |
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92 | # include |
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93 | # endif |
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94 | # else /* MSC or DJGPP */ |
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95 | # include |
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1896 | serge | 96 | # endif |
97 | # endif |
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98 | #endif |
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99 | |||
100 | #ifdef AMIGA |
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101 | # define OS_CODE 0x01 |
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102 | #endif |
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103 | |||
104 | #if defined(VAXC) || defined(VMS) |
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105 | # define OS_CODE 0x02 |
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106 | # define F_OPEN(name, mode) \ |
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107 | fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
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108 | #endif |
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109 | |||
110 | #if defined(ATARI) || defined(atarist) |
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111 | # define OS_CODE 0x05 |
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112 | #endif |
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113 | |||
114 | #ifdef OS2 |
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115 | # define OS_CODE 0x06 |
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3926 | Serge | 116 | # if defined(M_I86) && !defined(Z_SOLO) |
1896 | serge | 117 | # include |
118 | # endif |
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119 | #endif |
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120 | |||
121 | #if defined(MACOS) || defined(TARGET_OS_MAC) |
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122 | # define OS_CODE 0x07 |
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3926 | Serge | 123 | # ifndef Z_SOLO |
124 | # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
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125 | # include |
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126 | # else |
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127 | # ifndef fdopen |
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128 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
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129 | # endif |
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1896 | serge | 130 | # endif |
131 | # endif |
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132 | #endif |
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133 | |||
134 | #ifdef TOPS20 |
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135 | # define OS_CODE 0x0a |
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136 | #endif |
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137 | |||
138 | #ifdef WIN32 |
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139 | # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ |
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140 | # define OS_CODE 0x0b |
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141 | # endif |
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142 | #endif |
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143 | |||
144 | #ifdef __50SERIES /* Prime/PRIMOS */ |
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145 | # define OS_CODE 0x0f |
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146 | #endif |
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147 | |||
148 | #if defined(_BEOS_) || defined(RISCOS) |
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149 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
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150 | #endif |
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151 | |||
152 | #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX |
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153 | # if defined(_WIN32_WCE) |
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154 | # define fdopen(fd,mode) NULL /* No fdopen() */ |
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155 | # ifndef _PTRDIFF_T_DEFINED |
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156 | typedef int ptrdiff_t; |
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157 | # define _PTRDIFF_T_DEFINED |
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158 | # endif |
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159 | # else |
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160 | # define fdopen(fd,type) _fdopen(fd,type) |
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161 | # endif |
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162 | #endif |
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163 | |||
3926 | Serge | 164 | #if defined(__BORLANDC__) && !defined(MSDOS) |
1896 | serge | 165 | #pragma warn -8004 |
166 | #pragma warn -8008 |
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167 | #pragma warn -8066 |
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168 | #endif |
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169 | |||
170 | /* provide prototypes for these when building zlib without LFS */ |
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3926 | Serge | 171 | #if !defined(_WIN32) && \ |
172 | (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) |
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1896 | serge | 173 | ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); |
174 | ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); |
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175 | #endif |
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176 | |||
177 | /* common defaults */ |
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178 | |||
179 | #ifndef OS_CODE |
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180 | # define OS_CODE 0x03 /* assume Unix */ |
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181 | #endif |
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182 | |||
183 | #ifndef F_OPEN |
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184 | # define F_OPEN(name, mode) fopen((name), (mode)) |
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185 | #endif |
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186 | |||
187 | /* functions */ |
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188 | |||
3926 | Serge | 189 | #if defined(pyr) || defined(Z_SOLO) |
1896 | serge | 190 | # define NO_MEMCPY |
191 | #endif |
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192 | #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) |
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193 | /* Use our own functions for small and medium model with MSC <= 5.0. |
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194 | * You may have to use the same strategy for Borland C (untested). |
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195 | * The __SC__ check is for Symantec. |
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196 | */ |
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197 | # define NO_MEMCPY |
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198 | #endif |
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199 | #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
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200 | # define HAVE_MEMCPY |
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201 | #endif |
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202 | #ifdef HAVE_MEMCPY |
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203 | # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ |
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204 | # define zmemcpy _fmemcpy |
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205 | # define zmemcmp _fmemcmp |
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206 | # define zmemzero(dest, len) _fmemset(dest, 0, len) |
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207 | # else |
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208 | # define zmemcpy memcpy |
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209 | # define zmemcmp memcmp |
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210 | # define zmemzero(dest, len) memset(dest, 0, len) |
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211 | # endif |
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212 | #else |
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213 | void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
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214 | int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); |
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215 | void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); |
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216 | #endif |
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217 | |||
218 | /* Diagnostic functions */ |
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219 | #ifdef DEBUG |
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220 | # include |
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221 | extern int ZLIB_INTERNAL z_verbose; |
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222 | extern void ZLIB_INTERNAL z_error OF((char *m)); |
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223 | # define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
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224 | # define Trace(x) {if (z_verbose>=0) fprintf x ;} |
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225 | # define Tracev(x) {if (z_verbose>0) fprintf x ;} |
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226 | # define Tracevv(x) {if (z_verbose>1) fprintf x ;} |
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227 | # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} |
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228 | # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} |
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229 | #else |
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230 | # define Assert(cond,msg) |
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231 | # define Trace(x) |
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232 | # define Tracev(x) |
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233 | # define Tracevv(x) |
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234 | # define Tracec(c,x) |
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235 | # define Tracecv(c,x) |
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236 | #endif |
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237 | |||
3926 | Serge | 238 | #ifndef Z_SOLO |
239 | voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, |
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240 | unsigned size)); |
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241 | void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); |
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242 | #endif |
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1896 | serge | 243 | |
244 | #define ZALLOC(strm, items, size) \ |
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245 | (*((strm)->zalloc))((strm)->opaque, (items), (size)) |
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246 | #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) |
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247 | #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} |
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248 | |||
3926 | Serge | 249 | /* Reverse the bytes in a 32-bit value */ |
250 | #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ |
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251 | (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) |
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252 | |||
1896 | serge | 253 | #endif /* ZUTIL_H */><>><>=> |