<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>Barry: tarfile-ops-nt.cc Source File</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> <link href="tabs.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.5.6 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="namespaces.html"><span>Namespaces</span></a></li> <li><a href="classes.html"><span>Classes</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> <li><a href="dirs.html"><span>Directories</span></a></li> </ul> </div> <div class="navpath"><a class="el" href="dir_3e14c0bb4416cf979afc3165665fc916.html">src</a> </div> </div> <div class="contents"> <h1>tarfile-ops-nt.cc</h1><a href="tarfile-ops-nt_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> <a name="l00002"></a>00002 <span class="comment"></span><span class="comment">/// \file tarfile-ops-nt.cc</span> <a name="l00003"></a>00003 <span class="comment"></span><span class="comment">/// Non-thread safe operation functions for a libtar-compatible</span> <a name="l00004"></a>00004 <span class="comment"></span><span class="comment">/// zlib compression interface.</span> <a name="l00005"></a>00005 <span class="comment"></span> <a name="l00006"></a>00006 <span class="comment">/*</span> <a name="l00007"></a>00007 <span class="comment"> Copyright (C) 2007-2011, Chris Frey <cdfrey@foursquare.net></span> <a name="l00008"></a>00008 <span class="comment"></span> <a name="l00009"></a>00009 <span class="comment"> This program is free software; you can redistribute it and/or modify</span> <a name="l00010"></a>00010 <span class="comment"> it under the terms of the GNU General Public License as published by</span> <a name="l00011"></a>00011 <span class="comment"> the Free Software Foundation; either version 2 of the License, or</span> <a name="l00012"></a>00012 <span class="comment"> (at your option) any later version.</span> <a name="l00013"></a>00013 <span class="comment"></span> <a name="l00014"></a>00014 <span class="comment"> This program is distributed in the hope that it will be useful,</span> <a name="l00015"></a>00015 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span> <a name="l00016"></a>00016 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span> <a name="l00017"></a>00017 <span class="comment"></span> <a name="l00018"></a>00018 <span class="comment"> See the GNU General Public License in the COPYING file at the</span> <a name="l00019"></a>00019 <span class="comment"> root directory of this project for more details.</span> <a name="l00020"></a>00020 <span class="comment">*/</span> <a name="l00021"></a>00021 <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> <a name="l00023"></a>00023 <a name="l00024"></a>00024 <span class="preprocessor">#include <sys/types.h></span> <a name="l00025"></a>00025 <span class="preprocessor">#include <sys/stat.h></span> <a name="l00026"></a>00026 <span class="preprocessor">#include <fcntl.h></span> <a name="l00027"></a>00027 <span class="preprocessor">#include <stdlib.h></span> <a name="l00028"></a>00028 <a name="l00029"></a>00029 <span class="preprocessor">#include <zlib.h></span> <a name="l00030"></a>00030 <a name="l00031"></a>00031 <span class="preprocessor">#include <assert.h></span> <a name="l00032"></a>00032 <a name="l00033"></a>00033 <span class="keyword">namespace </span>reuse { <a name="l00034"></a>00034 <a name="l00035"></a>00035 <span class="keyword">namespace </span>gztar_nonthread { <a name="l00036"></a>00036 <a name="l00037"></a>00037 <span class="keyword">namespace </span>{ <a name="l00038"></a>00038 <span class="comment">// array of compressed file handles... needed for architectures</span> <a name="l00039"></a>00039 <span class="comment">// where sizeof(int) != sizeof(gzFile)</span> <a name="l00040"></a>00040 gzFile *gzHandles = 0; <a name="l00041"></a>00041 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> gzArraySize = 0; <a name="l00042"></a>00042 } <a name="l00043"></a>00043 <a name="l00044"></a>00044 <span class="keywordtype">int</span> open_compressed(<span class="keyword">const</span> <span class="keywordtype">char</span> *file, <span class="keywordtype">int</span> flags, mode_t mode) <a name="l00045"></a>00045 { <a name="l00046"></a>00046 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> index = 0; <a name="l00047"></a>00047 <span class="keywordflow">for</span>( ; index < gzArraySize; index++ ) { <a name="l00048"></a>00048 <span class="keywordflow">if</span>( gzHandles[index] == 0 ) <a name="l00049"></a>00049 <span class="keywordflow">break</span>; <a name="l00050"></a>00050 } <a name="l00051"></a>00051 <span class="keywordflow">if</span>( index >= gzArraySize ) { <a name="l00052"></a>00052 gzFile *h = (gzFile*) realloc(gzHandles, <a name="l00053"></a>00053 (gzArraySize + 100) * <span class="keyword">sizeof</span>(gzFile)); <a name="l00054"></a>00054 <span class="keywordflow">if</span>( h ) { <a name="l00055"></a>00055 gzHandles = h; <a name="l00056"></a>00056 gzArraySize += 100; <a name="l00057"></a>00057 } <a name="l00058"></a>00058 <span class="keywordflow">else</span> { <a name="l00059"></a>00059 <span class="keywordflow">return</span> -1; <a name="l00060"></a>00060 } <a name="l00061"></a>00061 } <a name="l00062"></a>00062 <a name="l00063"></a>00063 <span class="keywordtype">int</span> fd = open(file, flags, mode); <a name="l00064"></a>00064 <span class="keywordflow">if</span>( fd == -1 ) <a name="l00065"></a>00065 <span class="keywordflow">return</span> -1; <a name="l00066"></a>00066 <a name="l00067"></a>00067 gzFile gfd = gzdopen(fd, (flags & O_WRONLY) ? <span class="stringliteral">"wb9"</span> : <span class="stringliteral">"rb"</span>); <a name="l00068"></a>00068 <span class="keywordflow">if</span>( gfd == NULL ) { <a name="l00069"></a>00069 close(fd); <a name="l00070"></a>00070 <span class="keywordflow">return</span> -1; <a name="l00071"></a>00071 } <a name="l00072"></a>00072 <a name="l00073"></a>00073 gzHandles[index] = gfd; <a name="l00074"></a>00074 <span class="keywordflow">return</span> index; <a name="l00075"></a>00075 } <a name="l00076"></a>00076 <a name="l00077"></a>00077 <span class="keywordtype">int</span> close_compressed(<span class="keywordtype">int</span> fd) <a name="l00078"></a>00078 { <a name="l00079"></a>00079 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ufd = fd; <a name="l00080"></a>00080 assert( ufd < gzArraySize ); <a name="l00081"></a>00081 <span class="keywordtype">int</span> ret = gzclose(gzHandles[ufd]); <a name="l00082"></a>00082 gzHandles[ufd] = 0; <a name="l00083"></a>00083 <span class="keywordflow">return</span> ret; <a name="l00084"></a>00084 } <a name="l00085"></a>00085 <a name="l00086"></a>00086 ssize_t read_compressed(<span class="keywordtype">int</span> fd, <span class="keywordtype">void</span> *buf, <span class="keywordtype">size_t</span> size) <a name="l00087"></a>00087 { <a name="l00088"></a>00088 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ufd = fd; <a name="l00089"></a>00089 assert( ufd < gzArraySize ); <a name="l00090"></a>00090 <span class="keywordflow">return</span> gzread(gzHandles[ufd], buf, size); <a name="l00091"></a>00091 } <a name="l00092"></a>00092 <a name="l00093"></a>00093 ssize_t write_compressed(<span class="keywordtype">int</span> fd, <span class="keyword">const</span> <span class="keywordtype">void</span> *buf, <span class="keywordtype">size_t</span> size) <a name="l00094"></a>00094 { <a name="l00095"></a>00095 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> ufd = fd; <a name="l00096"></a>00096 assert( ufd < gzArraySize ); <a name="l00097"></a>00097 <span class="keywordflow">return</span> gzwrite(gzHandles[ufd], buf, size); <a name="l00098"></a>00098 } <a name="l00099"></a>00099 <a name="l00100"></a>00100 } <span class="comment">// namespace gztar_nonthread</span> <a name="l00101"></a>00101 <a name="l00102"></a>00102 <a name="l00103"></a>00103 tartype_t gztar_ops_nonthread = { <a name="l00104"></a>00104 (openfunc_t) gztar_nonthread::open_compressed, <a name="l00105"></a>00105 gztar_nonthread::close_compressed, <a name="l00106"></a>00106 gztar_nonthread::read_compressed, <a name="l00107"></a>00107 gztar_nonthread::write_compressed <a name="l00108"></a>00108 }; <a name="l00109"></a>00109 <a name="l00110"></a>00110 <a name="l00111"></a>00111 } <span class="comment">// namespace reuse</span> <a name="l00112"></a>00112 </pre></div></div> <hr size="1"><address style="text-align: right;"><small>Generated on Tue Mar 1 17:50:16 2011 for Barry by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address> </body> </html>