1 /* zutil.h -- internal interface and configuration of the compression library |
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2 * Copyright (C) 1995-2005 Jean-loup Gailly. |
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3 * For conditions of distribution and use, see copyright notice in zlib.h |
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4 */ |
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5 |
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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 |
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11 #ifndef ZUTIL_H |
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12 #define ZUTIL_H |
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13 |
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14 #define ZLIB_INTERNAL |
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15 #include "libzcore.h" |
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16 |
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17 #if defined(SYMBIAN_EZLIB_DEVICE) && !defined(LIBZGZIO_H) |
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18 #include <e32std.h> |
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19 #endif |
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20 |
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21 #if !defined(SYMBIAN_EZLIB_DEVICE) || defined(LIBZGZIO_H) |
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22 |
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23 #ifdef STDC |
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24 # ifndef _WIN32_WCE |
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25 # include <stddef.h> |
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26 # endif |
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27 # include <string.h> |
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28 # include <stdlib.h> |
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29 #endif |
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30 #ifdef NO_ERRNO_H |
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31 # ifdef _WIN32_WCE |
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32 /* The Microsoft C Run-Time Library for Windows CE doesn't have |
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33 * errno. We define it as a global variable to simplify porting. |
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34 * Its value is always 0 and should not be used. We rename it to |
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35 * avoid conflict with other libraries that use the same workaround. |
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36 */ |
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37 # define errno z_errno |
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38 # endif |
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39 extern int errno; |
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40 #else |
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41 # ifndef _WIN32_WCE |
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42 # include <errno.h> |
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43 # endif |
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44 #endif |
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45 |
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46 #endif //SYMBIAN_EZLIB_DEVICE |
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47 |
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48 #ifndef local |
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49 # define local static |
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50 #endif |
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51 /* compile with -Dlocal if your debugger can't find static symbols */ |
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52 |
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53 typedef unsigned char uch; |
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54 typedef uch FAR uchf; |
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55 typedef unsigned short ush; |
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56 typedef ush FAR ushf; |
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57 typedef unsigned long ulg; |
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58 |
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59 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
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60 /* (size given to avoid silly warnings with Visual C++) */ |
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61 |
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62 |
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63 |
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64 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
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65 |
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66 #define ERR_RETURN(strm,err) \ |
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67 return (strm->msg = (char*)ERR_MSG(err), (err)) |
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68 /* To be used only when the state is known to be valid */ |
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69 |
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70 /* common constants */ |
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71 |
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72 #ifndef DEF_WBITS |
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73 # define DEF_WBITS MAX_WBITS |
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74 #endif |
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75 /* default windowBits for decompression. MAX_WBITS is for compression only */ |
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76 |
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77 #if MAX_MEM_LEVEL >= 8 |
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78 #define DEF_MEM_LEVEL 8 |
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79 #else |
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80 #define DEF_MEM_LEVEL MAX_MEM_LEVEL |
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81 #endif |
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82 |
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83 /* default memLevel */ |
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84 |
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85 #define STORED_BLOCK 0 |
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86 #define STATIC_TREES 1 |
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87 #define DYN_TREES 2 |
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88 /* The three kinds of block type */ |
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89 |
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90 #define MIN_MATCH 3 |
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91 #define MAX_MATCH 258 |
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92 /* The minimum and maximum match lengths */ |
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93 |
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94 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
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95 |
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96 /* target dependencies */ |
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97 |
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98 |
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99 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
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100 # define OS_CODE 0x00 |
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101 # if defined(__TURBOC__) || defined(__BORLANDC__) |
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102 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
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103 /* Allow compilation with ANSI keywords only enabled */ |
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104 void _Cdecl farfree( void *block ); |
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105 void *_Cdecl farmalloc( unsigned long nbytes ); |
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106 # else |
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107 # include <alloc.h> |
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108 # endif |
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109 # else /* MSC or DJGPP */ |
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110 # include <malloc.h> |
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111 # endif |
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112 #endif |
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113 |
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114 #ifdef AMIGA |
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115 # define OS_CODE 0x01 |
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116 #endif |
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117 |
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118 #if defined(VAXC) || defined(VMS) |
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119 # define OS_CODE 0x02 |
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120 # define F_OPEN(name, mode) \ |
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121 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
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122 #endif |
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123 |
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124 #if defined(ATARI) || defined(atarist) |
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125 # define OS_CODE 0x05 |
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126 #endif |
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127 |
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128 #ifdef OS2 |
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129 # define OS_CODE 0x06 |
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130 # ifdef M_I86 |
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131 #include <malloc.h> |
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132 # endif |
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133 #endif |
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134 |
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135 #if defined(MACOS) || defined(TARGET_OS_MAC) |
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136 # define OS_CODE 0x07 |
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137 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
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138 # include <unix.h> /* for fdopen */ |
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139 # else |
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140 # ifndef fdopen |
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141 # define fdopen(fd,mode) NULL /* No fdopen() */ |
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142 # endif |
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143 # endif |
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144 #endif |
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145 |
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146 #ifdef TOPS20 |
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147 # define OS_CODE 0x0a |
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148 #endif |
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149 |
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150 #ifdef WIN32 |
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151 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ |
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152 # define OS_CODE 0x0b |
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153 # endif |
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154 #endif |
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155 |
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156 #ifdef __50SERIES /* Prime/PRIMOS */ |
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157 # define OS_CODE 0x0f |
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158 #endif |
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159 |
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160 #if defined(_BEOS_) || defined(RISCOS) |
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161 # define fdopen(fd,mode) NULL /* No fdopen() */ |
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162 #endif |
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163 |
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164 #if (defined(_MSC_VER) && (_MSC_VER > 600)) |
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165 # if defined(_WIN32_WCE) |
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166 # define fdopen(fd,mode) NULL /* No fdopen() */ |
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167 # ifndef _PTRDIFF_T_DEFINED |
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168 typedef int ptrdiff_t; |
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169 # define _PTRDIFF_T_DEFINED |
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170 # endif |
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171 # else |
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172 # define fdopen(fd,type) _fdopen(fd,type) |
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173 # endif |
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174 #endif |
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175 |
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176 /* common defaults */ |
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177 |
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178 #ifndef OS_CODE |
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179 # define OS_CODE 0x03 /* assume Unix */ |
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180 #endif |
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181 |
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182 #if !defined(SYMBIAN_EZLIB_DEVICE) || defined(LIBZGZIO_H) |
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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 |
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187 /* functions */ |
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188 |
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189 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) |
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190 # ifndef HAVE_VSNPRINTF |
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191 # define HAVE_VSNPRINTF |
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192 # endif |
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193 #endif |
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194 #if defined(__CYGWIN__) |
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195 # ifndef HAVE_VSNPRINTF |
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196 # define HAVE_VSNPRINTF |
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197 # endif |
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198 #endif |
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199 #ifndef HAVE_VSNPRINTF |
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200 # ifdef MSDOS |
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201 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), |
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202 but for now we just assume it doesn't. */ |
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203 # define NO_vsnprintf |
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204 # endif |
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205 # ifdef __TURBOC__ |
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206 # define NO_vsnprintf |
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207 # endif |
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208 # ifdef WIN32 |
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209 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ |
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210 # if !defined(vsnprintf) && !defined(NO_vsnprintf) |
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211 #ifndef SYMBIAN_EZLIB_DEVICE |
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212 # define vsnprintf _vsnprintf |
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213 # endif //SYMBIAN_EZLIB_DEVICE |
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214 # endif |
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215 # endif |
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216 # ifdef __SASC |
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217 # define NO_vsnprintf |
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218 # endif |
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219 #endif |
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220 #ifdef VMS |
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221 # define NO_vsnprintf |
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222 #endif |
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223 |
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224 #endif // !SYMBIAN_EZLIB_DEVICE || LIBZGZIO_H |
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225 |
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226 #if defined(pyr) |
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227 # define NO_MEMCPY |
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228 #endif |
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229 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) |
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230 /* Use our own functions for small and medium model with MSC <= 5.0. |
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231 * You may have to use the same strategy for Borland C (untested). |
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232 * The __SC__ check is for Symantec. |
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233 */ |
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234 # define NO_MEMCPY |
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235 #endif |
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236 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
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237 # define HAVE_MEMCPY |
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238 #endif |
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239 #ifdef HAVE_MEMCPY |
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240 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ |
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241 # define zmemcpy _fmemcpy |
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242 # define zmemcmp _fmemcmp |
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243 # define zmemzero(dest, len) _fmemset(dest, 0, len) |
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244 # else |
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245 # define zmemcpy memcpy |
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246 # define zmemcmp memcmp |
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247 # define zmemzero(dest, len) memset(dest, 0, len) |
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248 # endif |
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249 #else |
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250 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
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251 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); |
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252 extern void zmemzero OF((Bytef* dest, uInt len)); |
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253 #endif |
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254 |
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255 // Native Symbian Memory Functions Symbian |
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256 #if defined(SYMBIAN_EZLIB_DEVICE) && !defined(LIBZGZIO_H) |
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257 #define HAVE_MEMCPY |
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258 #undef zmemcpy |
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259 #undef zmemcmp |
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260 #undef zmemzero |
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261 #define zmemcpy Mem::Copy |
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262 #define zmemcmp(s1,s2,len) Mem::Compare(s1,len,s2,len) |
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263 #define zmemzero(dest, len) Mem::FillZ(dest, len) |
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264 #endif //SYMBIAN_EZLIB_DEVICE && !LIBZGZIO_H |
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265 |
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266 /* Diagnostic functions */ |
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267 #ifdef DEBUG |
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268 # include <stdio.h> |
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269 extern int z_verbose; |
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270 extern void z_error OF((char *m)); |
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271 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
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272 # define Trace(x) {if (z_verbose>=0) fprintf x ;} |
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273 # define Tracev(x) {if (z_verbose>0) fprintf x ;} |
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274 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} |
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275 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} |
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276 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} |
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277 #else |
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278 # define Assert(cond,msg) |
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279 # define Trace(x) |
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280 # define Tracev(x) |
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281 # define Tracevv(x) |
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282 # define Tracec(c,x) |
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283 # define Tracecv(c,x) |
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284 #endif |
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285 |
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286 |
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287 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); |
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288 void zcfree OF((voidpf opaque, voidpf ptr)); |
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289 |
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290 #define ZALLOC(strm, items, size) \ |
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291 (*((strm)->zalloc))((strm)->opaque, (items), (size)) |
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292 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) |
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293 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} |
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294 |
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295 #endif /* ZUTIL_H */ |
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