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  23 <h1>tarfile.cc</h1><a href="tarfile_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">///</span>
  24 <a name="l00002"></a>00002 <span class="comment"></span><span class="comment">/// \file       tarfile.cc</span>
  25 <a name="l00003"></a>00003 <span class="comment"></span><span class="comment">///             API for reading and writing sequentially from compressed</span>
  26 <a name="l00004"></a>00004 <span class="comment"></span><span class="comment">///             tar files.</span>
  27 <a name="l00005"></a>00005 <span class="comment"></span>
  28 <a name="l00006"></a>00006 <span class="comment">/*</span>
  29 <a name="l00007"></a>00007 <span class="comment">    Copyright (C) 2007-2011, Chris Frey &lt;cdfrey@foursquare.net&gt;</span>
  30 <a name="l00008"></a>00008 <span class="comment"></span>
  31 <a name="l00009"></a>00009 <span class="comment">    This program is free software; you can redistribute it and/or modify</span>
  32 <a name="l00010"></a>00010 <span class="comment">    it under the terms of the GNU General Public License as published by</span>
  33 <a name="l00011"></a>00011 <span class="comment">    the Free Software Foundation; either version 2 of the License, or</span>
  34 <a name="l00012"></a>00012 <span class="comment">    (at your option) any later version.</span>
  35 <a name="l00013"></a>00013 <span class="comment"></span>
  36 <a name="l00014"></a>00014 <span class="comment">    This program is distributed in the hope that it will be useful,</span>
  37 <a name="l00015"></a>00015 <span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
  38 <a name="l00016"></a>00016 <span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span>
  39 <a name="l00017"></a>00017 <span class="comment"></span>
  40 <a name="l00018"></a>00018 <span class="comment">    See the GNU General Public License in the COPYING file at the</span>
  41 <a name="l00019"></a>00019 <span class="comment">    root directory of this project for more details.</span>
  42 <a name="l00020"></a>00020 <span class="comment">*/</span>
  43 <a name="l00021"></a>00021
  44 <a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="tarfile_8h.html" title="API for reading and writing sequentially from compressed tar files.">tarfile.h</a>"</span>
  45 <a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="data_8h.html" title="Class to deal with pre-saved data files.">data.h</a>"</span>
  46 <a name="l00024"></a>00024
  47 <a name="l00025"></a>00025 <span class="preprocessor">#include &lt;fcntl.h&gt;</span>
  48 <a name="l00026"></a>00026 <span class="preprocessor">#include &lt;errno.h&gt;</span>
  49 <a name="l00027"></a>00027 <span class="preprocessor">#include &lt;string.h&gt;</span>
  50 <a name="l00028"></a>00028 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
  51 <a name="l00029"></a>00029
  52 <a name="l00030"></a>00030 <span class="keyword">namespace </span>reuse {
  53 <a name="l00031"></a>00031
  54 <a name="l00032"></a>00032 TarFile::TarFile(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename,
  55 <a name="l00033"></a>00033                  <span class="keywordtype">bool</span> create,
  56 <a name="l00034"></a>00034                  tartype_t *compress_ops,
  57 <a name="l00035"></a>00035                  <span class="keywordtype">bool</span> always_throw)
  58 <a name="l00036"></a>00036         : m_tar(0),
  59 <a name="l00037"></a>00037         m_throw(always_throw),
  60 <a name="l00038"></a>00038         m_writemode(create)
  61 <a name="l00039"></a>00039 {
  62 <a name="l00040"></a>00040         <span class="comment">// figure out how to handle the file flags/modes</span>
  63 <a name="l00041"></a>00041         <span class="keywordtype">int</span> flags = 0;
  64 <a name="l00042"></a>00042         mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
  65 <a name="l00043"></a>00043
  66 <a name="l00044"></a>00044         <span class="keywordflow">if</span>( m_writemode ) {
  67 <a name="l00045"></a>00045                 flags = O_WRONLY | O_CREAT | O_EXCL;
  68 <a name="l00046"></a>00046         }
  69 <a name="l00047"></a>00047         <span class="keywordflow">else</span> {
  70 <a name="l00048"></a>00048                 flags = O_RDONLY;
  71 <a name="l00049"></a>00049         }
  72 <a name="l00050"></a>00050
  73 <a name="l00051"></a>00051         <span class="comment">// open... throw on error, as we are in the constructor</span>
  74 <a name="l00052"></a>00052         <span class="keywordflow">if</span>( tar_open(&amp;m_tar, const_cast&lt;char*&gt;(filename),
  75 <a name="l00053"></a>00053                 compress_ops, flags, mode, TAR_VERBOSE | TAR_GNU) == -1 ) {
  76 <a name="l00054"></a>00054                 <span class="keywordflow">throw</span> TarError(std::string(<span class="stringliteral">"Unable to open tar file: "</span>) + strerror(errno));
  77 <a name="l00055"></a>00055         }
  78 <a name="l00056"></a>00056 }
  79 <a name="l00057"></a>00057
  80 <a name="l00058"></a>00058 TarFile::~TarFile()
  81 <a name="l00059"></a>00059 {
  82 <a name="l00060"></a>00060         <span class="keywordflow">try</span> {
  83 <a name="l00061"></a>00061                 Close();
  84 <a name="l00062"></a>00062         } <span class="keywordflow">catch</span>( TarError &amp;te ) {}
  85 <a name="l00063"></a>00063 }
  86 <a name="l00064"></a>00064
  87 <a name="l00065"></a>00065 <span class="keywordtype">bool</span> TarFile::False(<span class="keyword">const</span> <span class="keywordtype">char</span> *msg)
  88 <a name="l00066"></a>00066 {
  89 <a name="l00067"></a>00067         m_last_error = msg;
  90 <a name="l00068"></a>00068         <span class="keywordflow">if</span>( m_throw )
  91 <a name="l00069"></a>00069                 <span class="keywordflow">throw</span> TarError(msg);
  92 <a name="l00070"></a>00070         <span class="keywordflow">else</span>
  93 <a name="l00071"></a>00071                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
  94 <a name="l00072"></a>00072 }
  95 <a name="l00073"></a>00073
  96 <a name="l00074"></a>00074 <span class="keywordtype">bool</span> TarFile::False(<span class="keyword">const</span> std::string &amp;msg, <span class="keywordtype">int</span> err)
  97 <a name="l00075"></a>00075 {
  98 <a name="l00076"></a>00076         std::string str = msg;
  99 <a name="l00077"></a>00077         str += <span class="stringliteral">": "</span>;
 100 <a name="l00078"></a>00078         str += strerror(err);
 101 <a name="l00079"></a>00079         <span class="keywordflow">return</span> False(str);
 102 <a name="l00080"></a>00080 }
 103 <a name="l00081"></a>00081
 104 <a name="l00082"></a>00082 <span class="keywordtype">bool</span> TarFile::Close()
 105 <a name="l00083"></a>00083 {
 106 <a name="l00084"></a>00084         <span class="keywordflow">if</span>( m_tar ) {
 107 <a name="l00085"></a>00085                 <span class="keywordflow">if</span>( m_writemode ) {
 108 <a name="l00086"></a>00086                         <span class="keywordflow">if</span>( tar_append_eof(m_tar) != 0 )
 109 <a name="l00087"></a>00087                                 <span class="keywordflow">return</span> False(<span class="stringliteral">"Unable to write eof"</span>, errno);
 110 <a name="l00088"></a>00088                 }
 111 <a name="l00089"></a>00089
 112 <a name="l00090"></a>00090                 <span class="keywordflow">if</span>( tar_close(m_tar) != 0 ) {
 113 <a name="l00091"></a>00091                         <span class="keywordflow">return</span> False(<span class="stringliteral">"Unable to close file"</span>, errno);
 114 <a name="l00092"></a>00092                 }
 115 <a name="l00093"></a>00093                 m_tar = 0;
 116 <a name="l00094"></a>00094         }
 117 <a name="l00095"></a>00095         <span class="keywordflow">return</span> <span class="keyword">true</span>;
 118 <a name="l00096"></a>00096 }
 119 <a name="l00097"></a>00097 <span class="comment"></span>
 120 <a name="l00098"></a>00098 <span class="comment">/// Appends a new file to the current tarfile, using tarpath as</span>
 121 <a name="l00099"></a>00099 <span class="comment">/// its internal filename, and data as the complete file contents.</span>
 122 <a name="l00100"></a>00100 <span class="comment">/// Uses current date and time as file mtime.</span>
 123 <a name="l00101"></a>00101 <span class="comment"></span><span class="keywordtype">bool</span> TarFile::AppendFile(<span class="keyword">const</span> <span class="keywordtype">char</span> *tarpath, <span class="keyword">const</span> std::string &amp;data)
 124 <a name="l00102"></a>00102 {
 125 <a name="l00103"></a>00103         <span class="comment">// write standard file header</span>
 126 <a name="l00104"></a>00104         th_set_type(m_tar, REGTYPE);
 127 <a name="l00105"></a>00105         th_set_mode(m_tar, 0644);
 128 <a name="l00106"></a>00106         th_set_path(m_tar, const_cast&lt;char*&gt;(tarpath));
 129 <a name="l00107"></a>00107         th_set_user(m_tar, 0);
 130 <a name="l00108"></a>00108         th_set_group(m_tar, 0);
 131 <a name="l00109"></a>00109         th_set_size(m_tar, data.size());
 132 <a name="l00110"></a>00110         th_set_mtime(m_tar, time(NULL));
 133 <a name="l00111"></a>00111         <span class="keywordflow">if</span>( th_write(m_tar) != 0 ) {
 134 <a name="l00112"></a>00112                 <span class="keywordflow">return</span> False(<span class="stringliteral">"Unable to write tar header"</span>, errno);
 135 <a name="l00113"></a>00113         }
 136 <a name="l00114"></a>00114
 137 <a name="l00115"></a>00115         <span class="comment">// write the data in blocks until finished</span>
 138 <a name="l00116"></a>00116         <span class="keywordtype">char</span> block[T_BLOCKSIZE];
 139 <a name="l00117"></a>00117         <span class="keywordflow">for</span>( <span class="keywordtype">size_t</span> pos = 0; pos &lt; data.size(); pos += T_BLOCKSIZE ) {
 140 <a name="l00118"></a>00118                 memset(block, 0, T_BLOCKSIZE);
 141 <a name="l00119"></a>00119
 142 <a name="l00120"></a>00120                 <span class="keywordtype">size_t</span> size = T_BLOCKSIZE;
 143 <a name="l00121"></a>00121                 <span class="keywordflow">if</span>( data.size() - pos &lt; T_BLOCKSIZE )
 144 <a name="l00122"></a>00122                         size = data.size() - pos;
 145 <a name="l00123"></a>00123
 146 <a name="l00124"></a>00124                 memcpy(block, data.data() + pos, size);
 147 <a name="l00125"></a>00125
 148 <a name="l00126"></a>00126                 <span class="keywordflow">if</span>( tar_block_write(m_tar, block) != T_BLOCKSIZE ) {
 149 <a name="l00127"></a>00127                         <span class="keywordflow">return</span> False(<span class="stringliteral">"Unable to write block"</span>, errno);
 150 <a name="l00128"></a>00128                 }
 151 <a name="l00129"></a>00129         }
 152 <a name="l00130"></a>00130
 153 <a name="l00131"></a>00131         <span class="keywordflow">return</span> <span class="keyword">true</span>;
 154 <a name="l00132"></a>00132 }
 155 <a name="l00133"></a>00133 <span class="comment"></span>
 156 <a name="l00134"></a>00134 <span class="comment">/// Reads next available file into data, filling tarpath with</span>
 157 <a name="l00135"></a>00135 <span class="comment">/// internal filename from tarball.</span>
 158 <a name="l00136"></a>00136 <span class="comment"></span><span class="keywordtype">bool</span> TarFile::ReadNextFile(std::string &amp;tarpath, std::string &amp;data)
 159 <a name="l00137"></a>00137 {
 160 <a name="l00138"></a>00138         <span class="comment">// start fresh</span>
 161 <a name="l00139"></a>00139         tarpath.clear();
 162 <a name="l00140"></a>00140         data.clear();
 163 <a name="l00141"></a>00141
 164 <a name="l00142"></a>00142         <span class="comment">// read next tar file header... skip all directories</span>
 165 <a name="l00143"></a>00143         <span class="keywordflow">do</span> {
 166 <a name="l00144"></a>00144                 <span class="keywordflow">if</span>( th_read(m_tar) != 0 ) {
 167 <a name="l00145"></a>00145                         <span class="comment">// this is not necessarily an error, as it could just</span>
 168 <a name="l00146"></a>00146                         <span class="comment">// be the end of file, so a simple false is good here,</span>
 169 <a name="l00147"></a>00147                         <span class="comment">// don't throw an exception</span>
 170 <a name="l00148"></a>00148                         m_last_error = <span class="stringliteral">""</span>;
 171 <a name="l00149"></a>00149                         <span class="keywordflow">return</span> <span class="keyword">false</span>;
 172 <a name="l00150"></a>00150                 }
 173 <a name="l00151"></a>00151         } <span class="keywordflow">while</span>( TH_ISDIR(m_tar) );
 174 <a name="l00152"></a>00152
 175 <a name="l00153"></a>00153         <span class="comment">// write standard file header</span>
 176 <a name="l00154"></a>00154         <span class="keywordflow">if</span>( !TH_ISREG(m_tar) ) {
 177 <a name="l00155"></a>00155                 <span class="keywordflow">return</span> False(<span class="stringliteral">"Only regular files are supported inside a tarball."</span>);
 178 <a name="l00156"></a>00156         }
 179 <a name="l00157"></a>00157
 180 <a name="l00158"></a>00158         <span class="keywordtype">char</span> *pathname = th_get_pathname(m_tar);
 181 <a name="l00159"></a>00159         tarpath = pathname;
 182 <a name="l00160"></a>00160         <span class="comment">//</span>
 183 <a name="l00161"></a>00161         <span class="comment">// FIXME (leak) - someday, when all distros use a patched version of</span>
 184 <a name="l00162"></a>00162         <span class="comment">// libtar, we may be able to avoid this memory leak, but</span>
 185 <a name="l00163"></a>00163         <span class="comment">// th_get_pathname() does not consistently return a user-freeable</span>
 186 <a name="l00164"></a>00164         <span class="comment">// string on all distros.</span>
 187 <a name="l00165"></a>00165         <span class="comment">//</span>
 188 <a name="l00166"></a>00166         <span class="comment">// See the following links for more information:</span>
 189 <a name="l00167"></a>00167         <span class="comment">//   https://bugs.launchpad.net/ubuntu/+source/libtar/+bug/41804</span>
 190 <a name="l00168"></a>00168         <span class="comment">//   https://lists.feep.net:8080/pipermail/libtar/2006-April/000222.html</span>
 191 <a name="l00169"></a>00169         <span class="comment">//</span>
 192 <a name="l00170"></a>00170 <span class="comment">//      free(pathname);</span>
 193 <a name="l00171"></a>00171         <span class="keywordtype">size_t</span> size = th_get_size(m_tar);
 194 <a name="l00172"></a>00172
 195 <a name="l00173"></a>00173         <span class="comment">// read the data in blocks until finished</span>
 196 <a name="l00174"></a>00174         <span class="keywordtype">char</span> block[T_BLOCKSIZE];
 197 <a name="l00175"></a>00175         <span class="keywordflow">for</span>( <span class="keywordtype">size_t</span> pos = 0; pos &lt; size; pos += T_BLOCKSIZE ) {
 198 <a name="l00176"></a>00176                 memset(block, 0, T_BLOCKSIZE);
 199 <a name="l00177"></a>00177
 200 <a name="l00178"></a>00178                 <span class="keywordtype">size_t</span> readsize = T_BLOCKSIZE;
 201 <a name="l00179"></a>00179                 <span class="keywordflow">if</span>( size - pos &lt; T_BLOCKSIZE )
 202 <a name="l00180"></a>00180                         readsize = size - pos;
 203 <a name="l00181"></a>00181
 204 <a name="l00182"></a>00182                 <span class="keywordflow">if</span>( tar_block_read(m_tar, block) != T_BLOCKSIZE ) {
 205 <a name="l00183"></a>00183                         <span class="keywordflow">return</span> False(<span class="stringliteral">"Unable to read block"</span>, errno);
 206 <a name="l00184"></a>00184                 }
 207 <a name="l00185"></a>00185
 208 <a name="l00186"></a>00186                 data.append(block, readsize);
 209 <a name="l00187"></a>00187         }
 210 <a name="l00188"></a>00188
 211 <a name="l00189"></a>00189         <span class="keywordflow">return</span> <span class="keyword">true</span>;
 212 <a name="l00190"></a>00190 }
 213 <a name="l00191"></a>00191
 214 <a name="l00192"></a>00192 <span class="comment">// FIXME - yes, this is blatant copying of code, but this is</span>
 215 <a name="l00193"></a>00193 <span class="comment">// specific to Barry, to use a Barry::Data object instead of std::string</span>
 216 <a name="l00194"></a>00194 <span class="comment">// in order to reduce copies.</span>
 217 <a name="l00195"></a>00195 <span class="keywordtype">bool</span> TarFile::ReadNextFile(std::string &amp;tarpath, Barry::Data &amp;data)
 218 <a name="l00196"></a>00196 {
 219 <a name="l00197"></a>00197         <span class="comment">// start fresh</span>
 220 <a name="l00198"></a>00198         tarpath.clear();
 221 <a name="l00199"></a>00199         data.QuickZap();
 222 <a name="l00200"></a>00200
 223 <a name="l00201"></a>00201         <span class="comment">// read next tar file header... skip all directories</span>
 224 <a name="l00202"></a>00202         <span class="keywordflow">do</span> {
 225 <a name="l00203"></a>00203                 <span class="keywordflow">if</span>( th_read(m_tar) != 0 ) {
 226 <a name="l00204"></a>00204                         <span class="comment">// this is not necessarily an error, as it could just</span>
 227 <a name="l00205"></a>00205                         <span class="comment">// be the end of file, so a simple false is good here,</span>
 228 <a name="l00206"></a>00206                         <span class="comment">// don't throw an exception</span>
 229 <a name="l00207"></a>00207                         m_last_error = <span class="stringliteral">""</span>;
 230 <a name="l00208"></a>00208                         <span class="keywordflow">return</span> <span class="keyword">false</span>;
 231 <a name="l00209"></a>00209                 }
 232 <a name="l00210"></a>00210         } <span class="keywordflow">while</span>( TH_ISDIR(m_tar) );
 233 <a name="l00211"></a>00211
 234 <a name="l00212"></a>00212         <span class="comment">// write standard file header</span>
 235 <a name="l00213"></a>00213         <span class="keywordflow">if</span>( !TH_ISREG(m_tar) ) {
 236 <a name="l00214"></a>00214                 <span class="keywordflow">return</span> False(<span class="stringliteral">"Only regular files are supported inside a tarball."</span>);
 237 <a name="l00215"></a>00215         }
 238 <a name="l00216"></a>00216
 239 <a name="l00217"></a>00217         <span class="keywordtype">char</span> *pathname = th_get_pathname(m_tar);
 240 <a name="l00218"></a>00218         tarpath = pathname;
 241 <a name="l00219"></a>00219         <span class="comment">//</span>
 242 <a name="l00220"></a>00220         <span class="comment">// FIXME (leak) - someday, when all distros use a patched version of</span>
 243 <a name="l00221"></a>00221         <span class="comment">// libtar, we may be able to avoid this memory leak, but</span>
 244 <a name="l00222"></a>00222         <span class="comment">// th_get_pathname() does not consistently return a user-freeable</span>
 245 <a name="l00223"></a>00223         <span class="comment">// string on all distros.</span>
 246 <a name="l00224"></a>00224         <span class="comment">//</span>
 247 <a name="l00225"></a>00225         <span class="comment">// See the following links for more information:</span>
 248 <a name="l00226"></a>00226         <span class="comment">//   https://bugs.launchpad.net/ubuntu/+source/libtar/+bug/41804</span>
 249 <a name="l00227"></a>00227         <span class="comment">//   https://lists.feep.net:8080/pipermail/libtar/2006-April/000222.html</span>
 250 <a name="l00228"></a>00228         <span class="comment">//</span>
 251 <a name="l00229"></a>00229 <span class="comment">//      free(pathname);</span>
 252 <a name="l00230"></a>00230         <span class="keywordtype">size_t</span> size = th_get_size(m_tar);
 253 <a name="l00231"></a>00231
 254 <a name="l00232"></a>00232         <span class="comment">// read the data in blocks until finished</span>
 255 <a name="l00233"></a>00233         <span class="keywordtype">char</span> block[T_BLOCKSIZE];
 256 <a name="l00234"></a>00234         <span class="keywordflow">for</span>( <span class="keywordtype">size_t</span> pos = 0; pos &lt; size; pos += T_BLOCKSIZE ) {
 257 <a name="l00235"></a>00235                 memset(block, 0, T_BLOCKSIZE);
 258 <a name="l00236"></a>00236
 259 <a name="l00237"></a>00237                 <span class="keywordtype">size_t</span> readsize = T_BLOCKSIZE;
 260 <a name="l00238"></a>00238                 <span class="keywordflow">if</span>( size - pos &lt; T_BLOCKSIZE )
 261 <a name="l00239"></a>00239                         readsize = size - pos;
 262 <a name="l00240"></a>00240
 263 <a name="l00241"></a>00241                 <span class="keywordflow">if</span>( tar_block_read(m_tar, block) != T_BLOCKSIZE ) {
 264 <a name="l00242"></a>00242                         <span class="keywordflow">return</span> False(<span class="stringliteral">"Unable to read block"</span>, errno);
 265 <a name="l00243"></a>00243                 }
 266 <a name="l00244"></a>00244
 267 <a name="l00245"></a>00245                 data.Append(block, readsize);
 268 <a name="l00246"></a>00246         }
 269 <a name="l00247"></a>00247
 270 <a name="l00248"></a>00248         <span class="keywordflow">return</span> <span class="keyword">true</span>;
 271 <a name="l00249"></a>00249 }
 272 <a name="l00250"></a>00250 <span class="comment"></span>
 273 <a name="l00251"></a>00251 <span class="comment">/// Read next available filename, skipping the data if it is</span>
 274 <a name="l00252"></a>00252 <span class="comment">/// a regular file</span>
 275 <a name="l00253"></a>00253 <span class="comment"></span><span class="keywordtype">bool</span> TarFile::ReadNextFilenameOnly(std::string &amp;tarpath)
 276 <a name="l00254"></a>00254 {
 277 <a name="l00255"></a>00255         <span class="comment">// start fresh</span>
 278 <a name="l00256"></a>00256         tarpath.clear();
 279 <a name="l00257"></a>00257
 280 <a name="l00258"></a>00258         <span class="comment">// read next tar file header... skip all directories</span>
 281 <a name="l00259"></a>00259         <span class="keywordflow">do</span> {
 282 <a name="l00260"></a>00260                 <span class="keywordflow">if</span>( th_read(m_tar) != 0 ) {
 283 <a name="l00261"></a>00261                         <span class="comment">// this is not necessarily an error, as it could just</span>
 284 <a name="l00262"></a>00262                         <span class="comment">// be the end of file, so a simple false is good here,</span>
 285 <a name="l00263"></a>00263                         <span class="comment">// don't throw an exception</span>
 286 <a name="l00264"></a>00264                         m_last_error = <span class="stringliteral">""</span>;
 287 <a name="l00265"></a>00265                         <span class="keywordflow">return</span> <span class="keyword">false</span>;
 288 <a name="l00266"></a>00266                 }
 289 <a name="l00267"></a>00267         } <span class="keywordflow">while</span>( TH_ISDIR(m_tar) );
 290 <a name="l00268"></a>00268
 291 <a name="l00269"></a>00269         <span class="comment">// write standard file header</span>
 292 <a name="l00270"></a>00270         <span class="keywordflow">if</span>( !TH_ISREG(m_tar) ) {
 293 <a name="l00271"></a>00271                 <span class="keywordflow">return</span> False(<span class="stringliteral">"Only regular files are supported inside a tarball."</span>);
 294 <a name="l00272"></a>00272         }
 295 <a name="l00273"></a>00273
 296 <a name="l00274"></a>00274         <span class="keywordtype">char</span> *pathname = th_get_pathname(m_tar);
 297 <a name="l00275"></a>00275         tarpath = pathname;
 298 <a name="l00276"></a>00276         <span class="comment">// See above FIXME (leak) comment</span>
 299 <a name="l00277"></a>00277 <span class="comment">//      free(pathname);</span>
 300 <a name="l00278"></a>00278
 301 <a name="l00279"></a>00279         <span class="keywordflow">if</span>( tar_skip_regfile(m_tar) != 0 ) {
 302 <a name="l00280"></a>00280                 <span class="keywordflow">return</span> False(<span class="stringliteral">"Unable to skip tar file"</span>, errno);
 303 <a name="l00281"></a>00281         }
 304 <a name="l00282"></a>00282
 305 <a name="l00283"></a>00283         <span class="keywordflow">return</span> <span class="keyword">true</span>;
 306 <a name="l00284"></a>00284 }
 307 <a name="l00285"></a>00285
 308 <a name="l00286"></a>00286
 309 <a name="l00287"></a>00287 } <span class="comment">// namespace reuse</span>
 310 <a name="l00288"></a>00288
 311 <a name="l00289"></a>00289
 312 <a name="l00290"></a>00290 <span class="preprocessor">#ifdef __TEST_MODE__</span>
 313 <a name="l00291"></a>00291 <span class="preprocessor"></span>
 314 <a name="l00292"></a>00292 <span class="preprocessor">#include &lt;iostream&gt;</span>
 315 <a name="l00293"></a>00293 <span class="preprocessor">#include &lt;unistd.h&gt;</span>
 316 <a name="l00294"></a>00294
 317 <a name="l00295"></a>00295 <span class="keyword">using namespace </span>std;
 318 <a name="l00296"></a>00296
 319 <a name="l00297"></a>00297 <span class="keywordtype">int</span> main()
 320 <a name="l00298"></a>00298 {
 321 <a name="l00299"></a>00299         <span class="keywordflow">try</span> {
 322 <a name="l00300"></a>00300                 cout &lt;&lt; <span class="stringliteral">"Writing test file..."</span> &lt;&lt; endl;
 323 <a name="l00301"></a>00301                 reuse::TarFile output(<span class="stringliteral">"tartest.tar.gz"</span>, <span class="keyword">true</span>, <span class="keyword">true</span>, <span class="keyword">true</span>);
 324 <a name="l00302"></a>00302                 std::string data;
 325 <a name="l00303"></a>00303                 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> i = 0; i &lt; 60; i++ ) {
 326 <a name="l00304"></a>00304                         data.append(<span class="stringliteral">"0123456789"</span>, 10);
 327 <a name="l00305"></a>00305                 }
 328 <a name="l00306"></a>00306
 329 <a name="l00307"></a>00307                 output.AppendFile(<span class="stringliteral">"path1/test1.txt"</span>, data);
 330 <a name="l00308"></a>00308                 output.AppendFile(<span class="stringliteral">"path2/test2.txt"</span>, data);
 331 <a name="l00309"></a>00309                 output.Close();
 332 <a name="l00310"></a>00310
 333 <a name="l00311"></a>00311
 334 <a name="l00312"></a>00312                 cout &lt;&lt; <span class="stringliteral">"Reading test file..."</span> &lt;&lt; endl;
 335 <a name="l00313"></a>00313                 reuse::TarFile input(<span class="stringliteral">"tartest.tar.gz"</span>, <span class="keyword">false</span>, <span class="keyword">true</span>, <span class="keyword">true</span>);
 336 <a name="l00314"></a>00314                 std::string path, incoming;
 337 <a name="l00315"></a>00315
 338 <a name="l00316"></a>00316                 <span class="keywordflow">while</span>( input.ReadNextFile(path, incoming) ) {
 339 <a name="l00317"></a>00317                         cout &lt;&lt; <span class="stringliteral">"Read: "</span> &lt;&lt; path
 340 <a name="l00318"></a>00318                              &lt;&lt; <span class="stringliteral">" Data: "</span>
 341 <a name="l00319"></a>00319                              &lt;&lt; (( data == incoming ) ? <span class="stringliteral">"equal"</span> : <span class="stringliteral">"different"</span>)
 342 <a name="l00320"></a>00320                              &lt;&lt; endl;
 343 <a name="l00321"></a>00321                 }
 344 <a name="l00322"></a>00322
 345 <a name="l00323"></a>00323                 input.Close();
 346 <a name="l00324"></a>00324
 347 <a name="l00325"></a>00325                 unlink(<span class="stringliteral">"tartest.tar.gz"</span>);
 348 <a name="l00326"></a>00326
 349 <a name="l00327"></a>00327         } <span class="keywordflow">catch</span>( reuse::TarFile::TarError &amp;te ) {
 350 <a name="l00328"></a>00328                 cerr &lt;&lt; te.what() &lt;&lt; endl;
 351 <a name="l00329"></a>00329                 <span class="keywordflow">return</span> 1;
 352 <a name="l00330"></a>00330         }
 353 <a name="l00331"></a>00331 }
 354 <a name="l00332"></a>00332
 355 <a name="l00333"></a>00333 <span class="preprocessor">#endif</span>
 356 <a name="l00334"></a>00334 <span class="preprocessor"></span>
 357 </pre></div></div>
 358 <hr size="1"><address style="text-align: right;"><small>Generated on Thu Feb 10 16:13:59 2011 for Barry by&nbsp;
 359 <a href="http://www.doxygen.org/index.html">
 360 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
 361 </body>
 362 </html>