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<h1>osdir.h</h1><a href="osdir_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef OSLINK_OSDIR_HEADER_H_</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define OSLINK_OSDIR_HEADER_H_</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="preprocessor">#if defined(unix) || defined(__unix) || defined(__unix__)</span>
<a name="l00005"></a>00005 <span class="preprocessor"></span><span class="preprocessor">#define OSLINK_OSDIR_POSIX</span>
<a name="l00006"></a>00006 <span class="preprocessor"></span><span class="preprocessor">#elif defined(_WIN32)</span>
<a name="l00007"></a>00007 <span class="preprocessor"></span><span class="preprocessor">#define OSLINK_OSDIR_WINDOWS</span>
<a name="l00008"></a>00008 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00009"></a><a class="code" href="osdir_8h.html#a1e8041ec8f812dd344e48e8489d1787a">00009</a> <span class="preprocessor"></span><span class="preprocessor">#define OSLINK_OSDIR_NOTSUPPORTED</span>
<a name="l00010"></a>00010 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00011"></a>00011 <span class="preprocessor"></span>
<a name="l00012"></a>00012 <span class="preprocessor">#include <string></span>
<a name="l00013"></a>00013
<a name="l00014"></a>00014 <span class="preprocessor">#if defined(OSLINK_OSDIR_NOTSUPPORTED)</span>
<a name="l00015"></a>00015 <span class="preprocessor"></span>
<a name="l00016"></a><a class="code" href="namespaceoslink.html">00016</a> <span class="keyword">namespace </span>oslink
<a name="l00017"></a>00017 {
<a name="l00018"></a><a class="code" href="classoslink_1_1directory.html">00018</a> <span class="keyword">class </span><a class="code" href="classoslink_1_1directory.html">directory</a>
<a name="l00019"></a>00019 {
<a name="l00020"></a>00020 <span class="keyword">public</span>:
<a name="l00021"></a><a class="code" href="classoslink_1_1directory.html#a765eb797f88a9818d15edc306545a429">00021</a> <a class="code" href="classoslink_1_1directory.html#a765eb797f88a9818d15edc306545a429">directory</a>(<span class="keyword">const</span> std::string&) { }
<a name="l00022"></a><a class="code" href="classoslink_1_1directory.html#a3d790f30d2dc25a0e94a8936dc23707c">00022</a> <a class="code" href="classoslink_1_1directory.html#a3d790f30d2dc25a0e94a8936dc23707c">operator void*</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> (<span class="keywordtype">void</span>*)0; }
<a name="l00023"></a><a class="code" href="classoslink_1_1directory.html#a7305c713726f3e3258642c95e456b333">00023</a> std::string <a class="code" href="classoslink_1_1directory.html#a7305c713726f3e3258642c95e456b333">next</a>() { <span class="keywordflow">return</span> <span class="stringliteral">""</span>; }
<a name="l00024"></a>00024 };
<a name="l00025"></a>00025 }
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#elif defined(OSLINK_OSDIR_POSIX)</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <sys/types.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <dirent.h></span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="keyword">namespace </span>oslink
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034 <span class="keyword">class </span>directory
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 <span class="keyword">public</span>:
<a name="l00037"></a>00037 <a class="code" href="classoslink_1_1directory.html#a765eb797f88a9818d15edc306545a429">directory</a>(<span class="keyword">const</span> std::string& aName)
<a name="l00038"></a>00038 : handle(opendir(aName.c_str())), willfail(false)
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="keywordflow">if</span> (!handle)
<a name="l00041"></a>00041 willfail = <span class="keyword">true</span>;
<a name="l00042"></a>00042 <span class="keywordflow">else</span>
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 dirent* entry = readdir(handle);
<a name="l00045"></a>00045 <span class="keywordflow">if</span> (entry)
<a name="l00046"></a>00046 current = entry->d_name;
<a name="l00047"></a>00047 <span class="keywordflow">else</span>
<a name="l00048"></a>00048 willfail = <span class="keyword">true</span>;
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051 ~<a class="code" href="classoslink_1_1directory.html#a765eb797f88a9818d15edc306545a429">directory</a>()
<a name="l00052"></a>00052 {
<a name="l00053"></a>00053 <span class="keywordflow">if</span> (handle)
<a name="l00054"></a>00054 closedir(handle);
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056 <a class="code" href="classoslink_1_1directory.html#a3d790f30d2dc25a0e94a8936dc23707c">operator void*</a>()<span class="keyword"> const</span>
<a name="l00057"></a>00057 <span class="keyword"> </span>{
<a name="l00058"></a>00058 <span class="keywordflow">return</span> willfail ? (<span class="keywordtype">void</span>*)0:(<span class="keywordtype">void</span>*)(-1);
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060 std::string <a class="code" href="classoslink_1_1directory.html#a7305c713726f3e3258642c95e456b333">next</a>()
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 std::string prev(current);
<a name="l00063"></a>00063 dirent* entry = readdir(handle);
<a name="l00064"></a>00064 <span class="keywordflow">if</span> (entry)
<a name="l00065"></a>00065 current = entry->d_name;
<a name="l00066"></a>00066 <span class="keywordflow">else</span>
<a name="l00067"></a>00067 willfail = <span class="keyword">true</span>;
<a name="l00068"></a>00068 <span class="keywordflow">return</span> prev;
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 <span class="keyword">private</span>:
<a name="l00071"></a>00071 DIR* handle;
<a name="l00072"></a>00072 <span class="keywordtype">bool</span> willfail;
<a name="l00073"></a>00073 std::string current;
<a name="l00074"></a>00074 };
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076
<a name="l00077"></a>00077 <span class="preprocessor">#elif defined(OSLINK_OSDIR_WINDOWS)</span>
<a name="l00078"></a>00078 <span class="preprocessor"></span>
<a name="l00079"></a>00079 <span class="preprocessor">#include <windows.h></span>
<a name="l00080"></a>00080 <span class="preprocessor">#include <winbase.h></span>
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keyword">namespace </span>oslink
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 <span class="keyword">class </span>directory
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 <span class="keyword">public</span>:
<a name="l00087"></a>00087 <a class="code" href="classoslink_1_1directory.html#a765eb797f88a9818d15edc306545a429">directory</a>(<span class="keyword">const</span> std::string& aName)
<a name="l00088"></a>00088 : handle(INVALID_HANDLE_VALUE), willfail(false)
<a name="l00089"></a>00089 {
<a name="l00090"></a>00090 <span class="comment">// First check the attributes trying to access a non-directory with </span>
<a name="l00091"></a>00091 <span class="comment">// FindFirstFile takes ages</span>
<a name="l00092"></a>00092 DWORD attrs = GetFileAttributes(aName.c_str());
<a name="l00093"></a>00093 <span class="keywordflow">if</span> ( (attrs == 0xFFFFFFFF) || ((attrs && FILE_ATTRIBUTE_DIRECTORY) == 0) )
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095 willfail = <span class="keyword">true</span>;
<a name="l00096"></a>00096 <span class="keywordflow">return</span>;
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098 std::string Full(aName);
<a name="l00099"></a>00099 <span class="comment">// Circumvent a problem in FindFirstFile with c:\\* as parameter </span>
<a name="l00100"></a>00100 <span class="keywordflow">if</span> ( (Full.length() > 0) && (Full[Full.length()-1] != <span class="charliteral">'\\'</span>) )
<a name="l00101"></a>00101 Full += <span class="stringliteral">"\\"</span>;
<a name="l00102"></a>00102 WIN32_FIND_DATA entry;
<a name="l00103"></a>00103 handle = FindFirstFile( (Full+<span class="stringliteral">"*"</span>).c_str(), &entry);
<a name="l00104"></a>00104 <span class="keywordflow">if</span> (handle == INVALID_HANDLE_VALUE)
<a name="l00105"></a>00105 willfail = <span class="keyword">true</span>;
<a name="l00106"></a>00106 <span class="keywordflow">else</span>
<a name="l00107"></a>00107 current = entry.cFileName;
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109 ~<a class="code" href="classoslink_1_1directory.html#a765eb797f88a9818d15edc306545a429">directory</a>()
<a name="l00110"></a>00110 {
<a name="l00111"></a>00111 <span class="keywordflow">if</span> (handle != INVALID_HANDLE_VALUE)
<a name="l00112"></a>00112 FindClose(handle);
<a name="l00113"></a>00113 }
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <a class="code" href="classoslink_1_1directory.html#a3d790f30d2dc25a0e94a8936dc23707c">operator void*</a>()<span class="keyword"> const </span>
<a name="l00116"></a>00116 <span class="keyword"> </span>{
<a name="l00117"></a>00117 <span class="keywordflow">return</span> willfail ? (<span class="keywordtype">void</span>*)0:(<span class="keywordtype">void</span>*)(-1);
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119 std::string <a class="code" href="classoslink_1_1directory.html#a7305c713726f3e3258642c95e456b333">next</a>()
<a name="l00120"></a>00120 {
<a name="l00121"></a>00121 std::string prev = current;
<a name="l00122"></a>00122 WIN32_FIND_DATA entry;
<a name="l00123"></a>00123 <span class="keywordtype">int</span> ok = FindNextFile(handle, &entry);
<a name="l00124"></a>00124 <span class="keywordflow">if</span> (!ok)
<a name="l00125"></a>00125 willfail = <span class="keyword">true</span>;
<a name="l00126"></a>00126 <span class="keywordflow">else</span>
<a name="l00127"></a>00127 current = entry.cFileName;
<a name="l00128"></a>00128 <span class="keywordflow">return</span> current;
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130 <span class="keyword">private</span>:
<a name="l00131"></a>00131 HANDLE handle;
<a name="l00132"></a>00132 <span class="keywordtype">bool</span> willfail;
<a name="l00133"></a>00133 std::string current;
<a name="l00134"></a>00134 };
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="preprocessor">#endif</span>
<a name="l00139"></a>00139 <span class="preprocessor"></span>
<a name="l00140"></a>00140 <span class="preprocessor">#endif</span>
</pre></div></div>
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