Mercurial > hg > CbC > CbC_gcc
annotate zlib/examples/gun.c @ 144:8f4e72ab4e11
fix segmentation fault caused by nothing next cur_op to end
author | Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp> |
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date | Sun, 23 Dec 2018 21:23:56 +0900 |
parents | 04ced10e8804 |
children |
rev | line source |
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1 /* gun.c -- simple gunzip to give an example of the use of inflateBack() |
111 | 2 * Copyright (C) 2003, 2005, 2008, 2010, 2012 Mark Adler |
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3 * For conditions of distribution and use, see copyright notice in zlib.h |
111 | 4 Version 1.7 12 August 2012 Mark Adler */ |
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5 |
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6 /* Version history: |
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7 1.0 16 Feb 2003 First version for testing of inflateBack() |
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8 1.1 21 Feb 2005 Decompress concatenated gzip streams |
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9 Remove use of "this" variable (C++ keyword) |
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10 Fix return value for in() |
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11 Improve allocation failure checking |
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12 Add typecasting for void * structures |
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13 Add -h option for command version and usage |
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14 Add a bunch of comments |
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15 1.2 20 Mar 2005 Add Unix compress (LZW) decompression |
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16 Copy file attributes from input file to output file |
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17 1.3 12 Jun 2005 Add casts for error messages [Oberhumer] |
111 | 18 1.4 8 Dec 2006 LZW decompression speed improvements |
19 1.5 9 Feb 2008 Avoid warning in latest version of gcc | |
20 1.6 17 Jan 2010 Avoid signed/unsigned comparison warnings | |
21 1.7 12 Aug 2012 Update for z_const usage in zlib 1.2.8 | |
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22 */ |
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23 |
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24 /* |
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25 gun [ -t ] [ name ... ] |
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26 |
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27 decompresses the data in the named gzip files. If no arguments are given, |
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28 gun will decompress from stdin to stdout. The names must end in .gz, -gz, |
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29 .z, -z, _z, or .Z. The uncompressed data will be written to a file name |
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30 with the suffix stripped. On success, the original file is deleted. On |
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31 failure, the output file is deleted. For most failures, the command will |
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32 continue to process the remaining names on the command line. A memory |
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33 allocation failure will abort the command. If -t is specified, then the |
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34 listed files or stdin will be tested as gzip files for integrity (without |
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35 checking for a proper suffix), no output will be written, and no files |
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36 will be deleted. |
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37 |
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38 Like gzip, gun allows concatenated gzip streams and will decompress them, |
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39 writing all of the uncompressed data to the output. Unlike gzip, gun allows |
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40 an empty file on input, and will produce no error writing an empty output |
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41 file. |
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42 |
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43 gun will also decompress files made by Unix compress, which uses LZW |
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44 compression. These files are automatically detected by virtue of their |
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45 magic header bytes. Since the end of Unix compress stream is marked by the |
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46 end-of-file, they cannot be concantenated. If a Unix compress stream is |
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47 encountered in an input file, it is the last stream in that file. |
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48 |
111 | 49 Like gunzip and uncompress, the file attributes of the original compressed |
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50 file are maintained in the final uncompressed file, to the extent that the |
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51 user permissions allow it. |
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52 |
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53 On my Mac OS X PowerPC G4, gun is almost twice as fast as gunzip (version |
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54 1.2.4) is on the same file, when gun is linked with zlib 1.2.2. Also the |
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55 LZW decompression provided by gun is about twice as fast as the standard |
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56 Unix uncompress command. |
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57 */ |
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58 |
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59 /* external functions and related types and constants */ |
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60 #include <stdio.h> /* fprintf() */ |
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61 #include <stdlib.h> /* malloc(), free() */ |
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62 #include <string.h> /* strerror(), strcmp(), strlen(), memcpy() */ |
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63 #include <errno.h> /* errno */ |
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64 #include <fcntl.h> /* open() */ |
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65 #include <unistd.h> /* read(), write(), close(), chown(), unlink() */ |
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66 #include <sys/types.h> |
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67 #include <sys/stat.h> /* stat(), chmod() */ |
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68 #include <utime.h> /* utime() */ |
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69 #include "zlib.h" /* inflateBackInit(), inflateBack(), */ |
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70 /* inflateBackEnd(), crc32() */ |
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71 |
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72 /* function declaration */ |
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73 #define local static |
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74 |
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75 /* buffer constants */ |
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76 #define SIZE 32768U /* input and output buffer sizes */ |
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77 #define PIECE 16384 /* limits i/o chunks for 16-bit int case */ |
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78 |
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79 /* structure for infback() to pass to input function in() -- it maintains the |
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80 input file and a buffer of size SIZE */ |
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81 struct ind { |
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82 int infile; |
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83 unsigned char *inbuf; |
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84 }; |
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85 |
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86 /* Load input buffer, assumed to be empty, and return bytes loaded and a |
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87 pointer to them. read() is called until the buffer is full, or until it |
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88 returns end-of-file or error. Return 0 on error. */ |
111 | 89 local unsigned in(void *in_desc, z_const unsigned char **buf) |
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90 { |
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91 int ret; |
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92 unsigned len; |
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93 unsigned char *next; |
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94 struct ind *me = (struct ind *)in_desc; |
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95 |
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96 next = me->inbuf; |
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97 *buf = next; |
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98 len = 0; |
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99 do { |
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100 ret = PIECE; |
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101 if ((unsigned)ret > SIZE - len) |
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102 ret = (int)(SIZE - len); |
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103 ret = (int)read(me->infile, next, ret); |
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104 if (ret == -1) { |
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105 len = 0; |
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106 break; |
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107 } |
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108 next += ret; |
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109 len += ret; |
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110 } while (ret != 0 && len < SIZE); |
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111 return len; |
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112 } |
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113 |
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114 /* structure for infback() to pass to output function out() -- it maintains the |
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115 output file, a running CRC-32 check on the output and the total number of |
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116 bytes output, both for checking against the gzip trailer. (The length in |
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117 the gzip trailer is stored modulo 2^32, so it's ok if a long is 32 bits and |
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118 the output is greater than 4 GB.) */ |
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119 struct outd { |
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120 int outfile; |
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121 int check; /* true if checking crc and total */ |
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122 unsigned long crc; |
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123 unsigned long total; |
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124 }; |
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125 |
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126 /* Write output buffer and update the CRC-32 and total bytes written. write() |
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127 is called until all of the output is written or an error is encountered. |
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128 On success out() returns 0. For a write failure, out() returns 1. If the |
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129 output file descriptor is -1, then nothing is written. |
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130 */ |
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131 local int out(void *out_desc, unsigned char *buf, unsigned len) |
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132 { |
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133 int ret; |
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134 struct outd *me = (struct outd *)out_desc; |
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135 |
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136 if (me->check) { |
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137 me->crc = crc32(me->crc, buf, len); |
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138 me->total += len; |
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139 } |
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140 if (me->outfile != -1) |
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141 do { |
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142 ret = PIECE; |
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143 if ((unsigned)ret > len) |
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144 ret = (int)len; |
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145 ret = (int)write(me->outfile, buf, ret); |
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146 if (ret == -1) |
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147 return 1; |
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148 buf += ret; |
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149 len -= ret; |
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150 } while (len != 0); |
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151 return 0; |
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152 } |
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153 |
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154 /* next input byte macro for use inside lunpipe() and gunpipe() */ |
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155 #define NEXT() (have ? 0 : (have = in(indp, &next)), \ |
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156 last = have ? (have--, (int)(*next++)) : -1) |
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157 |
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158 /* memory for gunpipe() and lunpipe() -- |
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159 the first 256 entries of prefix[] and suffix[] are never used, could |
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160 have offset the index, but it's faster to waste the memory */ |
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161 unsigned char inbuf[SIZE]; /* input buffer */ |
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162 unsigned char outbuf[SIZE]; /* output buffer */ |
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163 unsigned short prefix[65536]; /* index to LZW prefix string */ |
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164 unsigned char suffix[65536]; /* one-character LZW suffix */ |
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165 unsigned char match[65280 + 2]; /* buffer for reversed match or gzip |
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166 32K sliding window */ |
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167 |
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168 /* throw out what's left in the current bits byte buffer (this is a vestigial |
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169 aspect of the compressed data format derived from an implementation that |
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170 made use of a special VAX machine instruction!) */ |
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171 #define FLUSHCODE() \ |
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172 do { \ |
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173 left = 0; \ |
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174 rem = 0; \ |
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175 if (chunk > have) { \ |
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176 chunk -= have; \ |
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177 have = 0; \ |
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178 if (NEXT() == -1) \ |
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179 break; \ |
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180 chunk--; \ |
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181 if (chunk > have) { \ |
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182 chunk = have = 0; \ |
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183 break; \ |
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184 } \ |
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185 } \ |
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186 have -= chunk; \ |
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187 next += chunk; \ |
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188 chunk = 0; \ |
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189 } while (0) |
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190 |
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191 /* Decompress a compress (LZW) file from indp to outfile. The compress magic |
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192 header (two bytes) has already been read and verified. There are have bytes |
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193 of buffered input at next. strm is used for passing error information back |
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194 to gunpipe(). |
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195 |
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196 lunpipe() will return Z_OK on success, Z_BUF_ERROR for an unexpected end of |
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197 file, read error, or write error (a write error indicated by strm->next_in |
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198 not equal to Z_NULL), or Z_DATA_ERROR for invalid input. |
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199 */ |
111 | 200 local int lunpipe(unsigned have, z_const unsigned char *next, struct ind *indp, |
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201 int outfile, z_stream *strm) |
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202 { |
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203 int last; /* last byte read by NEXT(), or -1 if EOF */ |
111 | 204 unsigned chunk; /* bytes left in current chunk */ |
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205 int left; /* bits left in rem */ |
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206 unsigned rem; /* unused bits from input */ |
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207 int bits; /* current bits per code */ |
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208 unsigned code; /* code, table traversal index */ |
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209 unsigned mask; /* mask for current bits codes */ |
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210 int max; /* maximum bits per code for this stream */ |
111 | 211 unsigned flags; /* compress flags, then block compress flag */ |
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212 unsigned end; /* last valid entry in prefix/suffix tables */ |
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213 unsigned temp; /* current code */ |
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214 unsigned prev; /* previous code */ |
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215 unsigned final; /* last character written for previous code */ |
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216 unsigned stack; /* next position for reversed string */ |
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217 unsigned outcnt; /* bytes in output buffer */ |
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218 struct outd outd; /* output structure */ |
111 | 219 unsigned char *p; |
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220 |
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221 /* set up output */ |
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222 outd.outfile = outfile; |
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
223 outd.check = 0; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
224 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
225 /* process remainder of compress header -- a flags byte */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
226 flags = NEXT(); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
227 if (last == -1) |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
228 return Z_BUF_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
229 if (flags & 0x60) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
230 strm->msg = (char *)"unknown lzw flags set"; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
231 return Z_DATA_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
232 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
233 max = flags & 0x1f; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
234 if (max < 9 || max > 16) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
235 strm->msg = (char *)"lzw bits out of range"; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
236 return Z_DATA_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
237 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
238 if (max == 9) /* 9 doesn't really mean 9 */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
239 max = 10; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
240 flags &= 0x80; /* true if block compress */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
241 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
242 /* clear table */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
243 bits = 9; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
244 mask = 0x1ff; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
245 end = flags ? 256 : 255; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
246 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
247 /* set up: get first 9-bit code, which is the first decompressed byte, but |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
248 don't create a table entry until the next code */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
249 if (NEXT() == -1) /* no compressed data is ok */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
250 return Z_OK; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
251 final = prev = (unsigned)last; /* low 8 bits of code */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
252 if (NEXT() == -1) /* missing a bit */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
253 return Z_BUF_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
254 if (last & 1) { /* code must be < 256 */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
255 strm->msg = (char *)"invalid lzw code"; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
256 return Z_DATA_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
257 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
258 rem = (unsigned)last >> 1; /* remaining 7 bits */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
259 left = 7; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
260 chunk = bits - 2; /* 7 bytes left in this chunk */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
261 outbuf[0] = (unsigned char)final; /* write first decompressed byte */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
262 outcnt = 1; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
263 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
264 /* decode codes */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
265 stack = 0; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
266 for (;;) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
267 /* if the table will be full after this, increment the code size */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
268 if (end >= mask && bits < max) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
269 FLUSHCODE(); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
270 bits++; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
271 mask <<= 1; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
272 mask++; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
273 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
274 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
275 /* get a code of length bits */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
276 if (chunk == 0) /* decrement chunk modulo bits */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
277 chunk = bits; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
278 code = rem; /* low bits of code */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
279 if (NEXT() == -1) { /* EOF is end of compressed data */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
280 /* write remaining buffered output */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
281 if (outcnt && out(&outd, outbuf, outcnt)) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
282 strm->next_in = outbuf; /* signal write error */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
283 return Z_BUF_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
284 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
285 return Z_OK; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
286 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
287 code += (unsigned)last << left; /* middle (or high) bits of code */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
288 left += 8; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
289 chunk--; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
290 if (bits > left) { /* need more bits */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
291 if (NEXT() == -1) /* can't end in middle of code */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
292 return Z_BUF_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
293 code += (unsigned)last << left; /* high bits of code */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
294 left += 8; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
295 chunk--; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
296 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
297 code &= mask; /* mask to current code length */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
298 left -= bits; /* number of unused bits */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
299 rem = (unsigned)last >> (8 - left); /* unused bits from last byte */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
300 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
301 /* process clear code (256) */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
302 if (code == 256 && flags) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
303 FLUSHCODE(); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
304 bits = 9; /* initialize bits and mask */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
305 mask = 0x1ff; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
306 end = 255; /* empty table */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
307 continue; /* get next code */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
308 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
309 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
310 /* special code to reuse last match */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
311 temp = code; /* save the current code */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
312 if (code > end) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
313 /* Be picky on the allowed code here, and make sure that the code |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
314 we drop through (prev) will be a valid index so that random |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
315 input does not cause an exception. The code != end + 1 check is |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
316 empirically derived, and not checked in the original uncompress |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
317 code. If this ever causes a problem, that check could be safely |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
318 removed. Leaving this check in greatly improves gun's ability |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
319 to detect random or corrupted input after a compress header. |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
320 In any case, the prev > end check must be retained. */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
321 if (code != end + 1 || prev > end) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
322 strm->msg = (char *)"invalid lzw code"; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
323 return Z_DATA_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
324 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
325 match[stack++] = (unsigned char)final; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
326 code = prev; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
327 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
328 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
329 /* walk through linked list to generate output in reverse order */ |
111 | 330 p = match + stack; |
51
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
331 while (code >= 256) { |
111 | 332 *p++ = suffix[code]; |
51
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
333 code = prefix[code]; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
334 } |
111 | 335 stack = p - match; |
51
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
336 match[stack++] = (unsigned char)code; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
337 final = code; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
338 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
339 /* link new table entry */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
340 if (end < mask) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
341 end++; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
342 prefix[end] = (unsigned short)prev; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
343 suffix[end] = (unsigned char)final; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
344 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
345 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
346 /* set previous code for next iteration */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
347 prev = temp; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
348 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
349 /* write output in forward order */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
350 while (stack > SIZE - outcnt) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
351 while (outcnt < SIZE) |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
352 outbuf[outcnt++] = match[--stack]; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
353 if (out(&outd, outbuf, outcnt)) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
354 strm->next_in = outbuf; /* signal write error */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
355 return Z_BUF_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
356 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
357 outcnt = 0; |
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
358 } |
111 | 359 p = match + stack; |
51
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
360 do { |
111 | 361 outbuf[outcnt++] = *--p; |
362 } while (p > match); | |
363 stack = 0; | |
51
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
364 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
365 /* loop for next code with final and prev as the last match, rem and |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
366 left provide the first 0..7 bits of the next code, end is the last |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
367 valid table entry */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
368 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
369 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
370 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
371 /* Decompress a gzip file from infile to outfile. strm is assumed to have been |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
372 successfully initialized with inflateBackInit(). The input file may consist |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
373 of a series of gzip streams, in which case all of them will be decompressed |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
374 to the output file. If outfile is -1, then the gzip stream(s) integrity is |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
375 checked and nothing is written. |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
376 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
377 The return value is a zlib error code: Z_MEM_ERROR if out of memory, |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
378 Z_DATA_ERROR if the header or the compressed data is invalid, or if the |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
379 trailer CRC-32 check or length doesn't match, Z_BUF_ERROR if the input ends |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
380 prematurely or a write error occurs, or Z_ERRNO if junk (not a another gzip |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
381 stream) follows a valid gzip stream. |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
382 */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
383 local int gunpipe(z_stream *strm, int infile, int outfile) |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
384 { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
385 int ret, first, last; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
386 unsigned have, flags, len; |
111 | 387 z_const unsigned char *next = NULL; |
51
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
388 struct ind ind, *indp; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
389 struct outd outd; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
390 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
391 /* setup input buffer */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
392 ind.infile = infile; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
393 ind.inbuf = inbuf; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
394 indp = &ind; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
395 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
396 /* decompress concatenated gzip streams */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
397 have = 0; /* no input data read in yet */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
398 first = 1; /* looking for first gzip header */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
399 strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
400 for (;;) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
401 /* look for the two magic header bytes for a gzip stream */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
402 if (NEXT() == -1) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
403 ret = Z_OK; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
404 break; /* empty gzip stream is ok */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
405 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
406 if (last != 31 || (NEXT() != 139 && last != 157)) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
407 strm->msg = (char *)"incorrect header check"; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
408 ret = first ? Z_DATA_ERROR : Z_ERRNO; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
409 break; /* not a gzip or compress header */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
410 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
411 first = 0; /* next non-header is junk */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
412 |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
413 /* process a compress (LZW) file -- can't be concatenated after this */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
414 if (last == 157) { |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
415 ret = lunpipe(have, next, indp, outfile, strm); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
416 break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
417 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
418 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
419 /* process remainder of gzip header */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
420 ret = Z_BUF_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
421 if (NEXT() != 8) { /* only deflate method allowed */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
422 if (last == -1) break; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
423 strm->msg = (char *)"unknown compression method"; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
424 ret = Z_DATA_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
425 break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
426 } |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
427 flags = NEXT(); /* header flags */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
428 NEXT(); /* discard mod time, xflgs, os */ |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
429 NEXT(); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
430 NEXT(); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
431 NEXT(); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
432 NEXT(); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
433 NEXT(); |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
434 if (last == -1) break; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
435 if (flags & 0xe0) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
436 strm->msg = (char *)"unknown header flags set"; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
437 ret = Z_DATA_ERROR; |
ae3a4bfb450b
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
438 break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
439 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
440 if (flags & 4) { /* extra field */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
441 len = NEXT(); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
442 len += (unsigned)(NEXT()) << 8; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
443 if (last == -1) break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
444 while (len > have) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
445 len -= have; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
446 have = 0; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
447 if (NEXT() == -1) break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
448 len--; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
449 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
450 if (last == -1) break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
451 have -= len; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
452 next += len; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
453 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
454 if (flags & 8) /* file name */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
455 while (NEXT() != 0 && last != -1) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
456 ; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
457 if (flags & 16) /* comment */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
458 while (NEXT() != 0 && last != -1) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
459 ; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
460 if (flags & 2) { /* header crc */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
461 NEXT(); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
462 NEXT(); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
463 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
464 if (last == -1) break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
465 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
466 /* set up output */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
467 outd.outfile = outfile; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
468 outd.check = 1; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
469 outd.crc = crc32(0L, Z_NULL, 0); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
470 outd.total = 0; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
471 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
472 /* decompress data to output */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
473 strm->next_in = next; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
474 strm->avail_in = have; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
475 ret = inflateBack(strm, in, indp, out, &outd); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
476 if (ret != Z_STREAM_END) break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
477 next = strm->next_in; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
478 have = strm->avail_in; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
479 strm->next_in = Z_NULL; /* so Z_BUF_ERROR means EOF */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
480 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
481 /* check trailer */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
482 ret = Z_BUF_ERROR; |
111 | 483 if (NEXT() != (int)(outd.crc & 0xff) || |
484 NEXT() != (int)((outd.crc >> 8) & 0xff) || | |
485 NEXT() != (int)((outd.crc >> 16) & 0xff) || | |
486 NEXT() != (int)((outd.crc >> 24) & 0xff)) { | |
51
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
487 /* crc error */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
488 if (last != -1) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
489 strm->msg = (char *)"incorrect data check"; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
490 ret = Z_DATA_ERROR; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
491 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
492 break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
493 } |
111 | 494 if (NEXT() != (int)(outd.total & 0xff) || |
495 NEXT() != (int)((outd.total >> 8) & 0xff) || | |
496 NEXT() != (int)((outd.total >> 16) & 0xff) || | |
497 NEXT() != (int)((outd.total >> 24) & 0xff)) { | |
51
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
498 /* length error */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
499 if (last != -1) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
500 strm->msg = (char *)"incorrect length check"; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
501 ret = Z_DATA_ERROR; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
502 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
503 break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
504 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
505 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
506 /* go back and look for another gzip stream */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
507 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
508 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
509 /* clean up and return */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
510 return ret; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
511 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
512 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
513 /* Copy file attributes, from -> to, as best we can. This is best effort, so |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
514 no errors are reported. The mode bits, including suid, sgid, and the sticky |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
515 bit are copied (if allowed), the owner's user id and group id are copied |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
516 (again if allowed), and the access and modify times are copied. */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
517 local void copymeta(char *from, char *to) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
518 { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
519 struct stat was; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
520 struct utimbuf when; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
521 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
522 /* get all of from's Unix meta data, return if not a regular file */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
523 if (stat(from, &was) != 0 || (was.st_mode & S_IFMT) != S_IFREG) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
524 return; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
525 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
526 /* set to's mode bits, ignore errors */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
527 (void)chmod(to, was.st_mode & 07777); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
528 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
529 /* copy owner's user and group, ignore errors */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
530 (void)chown(to, was.st_uid, was.st_gid); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
531 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
532 /* copy access and modify times, ignore errors */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
533 when.actime = was.st_atime; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
534 when.modtime = was.st_mtime; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
535 (void)utime(to, &when); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
536 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
537 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
538 /* Decompress the file inname to the file outnname, of if test is true, just |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
539 decompress without writing and check the gzip trailer for integrity. If |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
540 inname is NULL or an empty string, read from stdin. If outname is NULL or |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
541 an empty string, write to stdout. strm is a pre-initialized inflateBack |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
542 structure. When appropriate, copy the file attributes from inname to |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
543 outname. |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
544 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
545 gunzip() returns 1 if there is an out-of-memory error or an unexpected |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
546 return code from gunpipe(). Otherwise it returns 0. |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
547 */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
548 local int gunzip(z_stream *strm, char *inname, char *outname, int test) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
549 { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
550 int ret; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
551 int infile, outfile; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
552 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
553 /* open files */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
554 if (inname == NULL || *inname == 0) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
555 inname = "-"; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
556 infile = 0; /* stdin */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
557 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
558 else { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
559 infile = open(inname, O_RDONLY, 0); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
560 if (infile == -1) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
561 fprintf(stderr, "gun cannot open %s\n", inname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
562 return 0; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
563 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
564 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
565 if (test) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
566 outfile = -1; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
567 else if (outname == NULL || *outname == 0) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
568 outname = "-"; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
569 outfile = 1; /* stdout */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
570 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
571 else { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
572 outfile = open(outname, O_CREAT | O_TRUNC | O_WRONLY, 0666); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
573 if (outfile == -1) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
574 close(infile); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
575 fprintf(stderr, "gun cannot create %s\n", outname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
576 return 0; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
577 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
578 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
579 errno = 0; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
580 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
581 /* decompress */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
582 ret = gunpipe(strm, infile, outfile); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
583 if (outfile > 2) close(outfile); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
584 if (infile > 2) close(infile); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
585 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
586 /* interpret result */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
587 switch (ret) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
588 case Z_OK: |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
589 case Z_ERRNO: |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
590 if (infile > 2 && outfile > 2) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
591 copymeta(inname, outname); /* copy attributes */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
592 unlink(inname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
593 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
594 if (ret == Z_ERRNO) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
595 fprintf(stderr, "gun warning: trailing garbage ignored in %s\n", |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
596 inname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
597 break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
598 case Z_DATA_ERROR: |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
599 if (outfile > 2) unlink(outname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
600 fprintf(stderr, "gun data error on %s: %s\n", inname, strm->msg); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
601 break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
602 case Z_MEM_ERROR: |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
603 if (outfile > 2) unlink(outname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
604 fprintf(stderr, "gun out of memory error--aborting\n"); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
605 return 1; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
606 case Z_BUF_ERROR: |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
607 if (outfile > 2) unlink(outname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
608 if (strm->next_in != Z_NULL) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
609 fprintf(stderr, "gun write error on %s: %s\n", |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
610 outname, strerror(errno)); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
611 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
612 else if (errno) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
613 fprintf(stderr, "gun read error on %s: %s\n", |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
614 inname, strerror(errno)); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
615 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
616 else { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
617 fprintf(stderr, "gun unexpected end of file on %s\n", |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
618 inname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
619 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
620 break; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
621 default: |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
622 if (outfile > 2) unlink(outname); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
623 fprintf(stderr, "gun internal error--aborting\n"); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
624 return 1; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
625 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
626 return 0; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
627 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
628 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
629 /* Process the gun command line arguments. See the command syntax near the |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
630 beginning of this source file. */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
631 int main(int argc, char **argv) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
632 { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
633 int ret, len, test; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
634 char *outname; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
635 unsigned char *window; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
636 z_stream strm; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
637 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
638 /* initialize inflateBack state for repeated use */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
639 window = match; /* reuse LZW match buffer */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
640 strm.zalloc = Z_NULL; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
641 strm.zfree = Z_NULL; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
642 strm.opaque = Z_NULL; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
643 ret = inflateBackInit(&strm, 15, window); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
644 if (ret != Z_OK) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
645 fprintf(stderr, "gun out of memory error--aborting\n"); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
646 return 1; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
647 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
648 |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
649 /* decompress each file to the same name with the suffix removed */ |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
650 argc--; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
651 argv++; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
652 test = 0; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
653 if (argc && strcmp(*argv, "-h") == 0) { |
111 | 654 fprintf(stderr, "gun 1.6 (17 Jan 2010)\n"); |
655 fprintf(stderr, "Copyright (C) 2003-2010 Mark Adler\n"); | |
51
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
656 fprintf(stderr, "usage: gun [-t] [file1.gz [file2.Z ...]]\n"); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
657 return 0; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
658 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
659 if (argc && strcmp(*argv, "-t") == 0) { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
660 test = 1; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
661 argc--; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
662 argv++; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
663 } |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
664 if (argc) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
665 do { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
666 if (test) |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
667 outname = NULL; |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
668 else { |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
669 len = (int)strlen(*argv); |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
670 if (strcmp(*argv + len - 3, ".gz") == 0 || |
ae3a4bfb450b
add some files of version 4.4.3 that have been forgotten.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
diff
changeset
|
671 strcmp(*argv + len - 3, "-gz") == 0) |
ae3a4bfb450b
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672 len -= 3; |
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673 else if (strcmp(*argv + len - 2, ".z") == 0 || |
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674 strcmp(*argv + len - 2, "-z") == 0 || |
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675 strcmp(*argv + len - 2, "_z") == 0 || |
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676 strcmp(*argv + len - 2, ".Z") == 0) |
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677 len -= 2; |
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678 else { |
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679 fprintf(stderr, "gun error: no gz type on %s--skipping\n", |
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680 *argv); |
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681 continue; |
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682 } |
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683 outname = malloc(len + 1); |
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684 if (outname == NULL) { |
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685 fprintf(stderr, "gun out of memory error--aborting\n"); |
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686 ret = 1; |
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687 break; |
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688 } |
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689 memcpy(outname, *argv, len); |
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parents:
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690 outname[len] = 0; |
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parents:
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691 } |
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692 ret = gunzip(&strm, *argv, outname, test); |
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693 if (outname != NULL) free(outname); |
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694 if (ret) break; |
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695 } while (argv++, --argc); |
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696 else |
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parents:
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697 ret = gunzip(&strm, NULL, NULL, test); |
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parents:
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698 |
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parents:
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699 /* clean up */ |
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700 inflateBackEnd(&strm); |
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parents:
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701 return ret; |
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parents:
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702 } |