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| author | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
|---|---|---|
| committer | neodarz <neodarz@neodarz.net> | 2018-08-11 20:21:34 +0200 |
| commit | 0ea5fc66924303d1bf73ba283a383e2aadee02f2 (patch) | |
| tree | 2568e71a7ccc44ec23b8bb3f0ff97fb6bf2ed709 /docs/doxygen/nel/big__file_8cpp-source.html | |
| download | nevrax-website-self-hostable-0ea5fc66924303d1bf73ba283a383e2aadee02f2.tar.xz nevrax-website-self-hostable-0ea5fc66924303d1bf73ba283a383e2aadee02f2.zip | |
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+</td></tr></table> + + +<!-- block --> +<TABLE bgcolor="#dddddd" CELLSPACING=0 CELLPADDING=0 BORDER=0 width=100%><tr><td width=1% valign=middle><img width=6 height=14 hspace=2 vspace=2 src="http://www.nevrax.org/inc/img/reddots.gif"></TD> + <TD><B>Documentation</B></TD> + <TD ALIGN=RIGHT> </td> +</tr></table> +<!-- Generated by Doxygen 1.2.14 --> +<center> +<a class="qindex" href="index.html">Main Page</a> <a class="qindex" href="namespaces.html">Namespace List</a> <a class="qindex" href="hierarchy.html">Class Hierarchy</a> <a class="qindex" href="classes.html">Alphabetical List</a> <a class="qindex" href="annotated.html">Compound List</a> <a class="qindex" href="files.html">File List</a> <a class="qindex" href="namespacemembers.html">Namespace Members</a> <a class="qindex" href="functions.html">Compound Members</a> <a class="qindex" href="globals.html">File Members</a> <a class="qindex" href="pages.html">Related Pages</a> <a class="qindexRef" doxygen="_cgi:http://www.nevrax.org/cgi-bin/nel-search.cgi" href="http://www.nevrax.org/cgi-bin/nel-search.cgi">Search</a> </center> +<hr><h1>big_file.cpp</h1><a href="big__file_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 +00007 <font class="comment">/* Copyright, 2000, 2002 Nevrax Ltd.</font> +00008 <font class="comment"> *</font> +00009 <font class="comment"> * This file is part of NEVRAX NEL.</font> +00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font> +00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font> +00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font> +00013 <font class="comment"> * any later version.</font> +00014 <font class="comment"></font> +00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font> +00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font> +00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font> +00018 <font class="comment"> * General Public License for more details.</font> +00019 <font class="comment"></font> +00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font> +00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font> +00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font> +00023 <font class="comment"> * MA 02111-1307, USA.</font> +00024 <font class="comment"> */</font> +00025 +00026 <font class="preprocessor">#include "<a class="code" href="stdmisc_8h.html">stdmisc.h</a>"</font> +00027 +00028 <font class="preprocessor">#include "<a class="code" href="big__file_8h.html">nel/misc/big_file.h</a>"</font> +00029 <font class="preprocessor">#include "<a class="code" href="path_8h.html">nel/misc/path.h</a>"</font> +00030 +00031 <font class="keyword">using</font> <font class="keyword">namespace </font>std; +00032 +00033 <font class="keyword">namespace </font>NLMISC { +00034 +<a name="l00035"></a><a class="code" href="classNLMISC_1_1CBigFile.html#r0">00035</a> CBigFile *CBigFile::_Singleton = NULL; +00036 +00037 +00038 <font class="comment">// ***************************************************************************</font> +<a name="l00039"></a><a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a0">00039</a> CBigFile::CThreadFileArray::CThreadFileArray() +00040 { +00041 <a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#o1">_CurrentId</a>= 0; +00042 } +00043 <font class="comment">// ***************************************************************************</font> +<a name="l00044"></a><a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a1">00044</a> uint32 CBigFile::CThreadFileArray::allocate() +00045 { +00046 <font class="keywordflow">return</font> <a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#o1">_CurrentId</a>++; +00047 } +00048 <font class="comment">// ***************************************************************************</font> +<a name="l00049"></a><a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a2">00049</a> CBigFile::CHandleFile &CBigFile::CThreadFileArray::get(uint32 <a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>) +00050 { +00051 <font class="comment">// If the thread struct ptr is NULL, must allocate it.</font> +00052 vector<CHandleFile> *ptr= (vector<CHandleFile>*)<a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#o0">_TDS</a>.getPointer(); +00053 <font class="keywordflow">if</font>(ptr==NULL) +00054 { +00055 ptr= <font class="keyword">new</font> vector<CHandleFile>; +00056 <a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#o0">_TDS</a>.setPointer(ptr); +00057 } +00058 +00059 <font class="comment">// if the vector is not allocated, allocate it (empty entries filled with NULL => not opened FILE* in this thread)</font> +00060 <font class="keywordflow">if</font>(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>>=ptr->size()) +00061 { +00062 ptr->resize(<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>+1); +00063 } +00064 +00065 <font class="keywordflow">return</font> (*ptr)[<a class="code" href="driver__opengl__extension__def_8h.html#a358">index</a>]; +00066 } +00067 +00068 +00069 <font class="comment">// ***************************************************************************</font> +<a name="l00070"></a><a class="code" href="classNLMISC_1_1CBigFile.html#c0">00070</a> CBigFile::CBigFile () +00071 { +00072 } +00073 +00074 <font class="comment">// ***************************************************************************</font> +<a name="l00075"></a><a class="code" href="classNLMISC_1_1CBigFile.html#d0">00075</a> CBigFile &CBigFile::getInstance () +00076 { +00077 <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CBigFile.html#r0">_Singleton</a> == NULL) +00078 { +00079 <a class="code" href="classNLMISC_1_1CBigFile.html#r0">_Singleton</a> = <font class="keyword">new</font> <a class="code" href="classNLMISC_1_1CBigFile.html#c0">CBigFile</a>(); +00080 } +00081 <font class="keywordflow">return</font> *<a class="code" href="classNLMISC_1_1CBigFile.html#r0">_Singleton</a>; +00082 } +00083 +00084 <font class="comment">// ***************************************************************************</font> +<a name="l00085"></a><a class="code" href="classNLMISC_1_1CBigFile.html#a0">00085</a> <font class="keywordtype">bool</font> CBigFile::add (<font class="keyword">const</font> std::string &sBigFileName, uint32 nOptions) +00086 { +00087 BNP bnpTmp; +00088 +00089 bnpTmp.BigFileName= sBigFileName; +00090 +00091 <font class="comment">// Is already the same bigfile name ?</font> +00092 string bigfilenamealone = CFile::getFilename (sBigFileName); +00093 <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.find(bigfilenamealone) != <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.end()) +00094 <font class="keywordflow">return</font> <font class="keyword">false</font>; +00095 +00096 <font class="comment">// Allocate a new ThreadSafe FileId for this bnp.</font> +00097 bnpTmp.ThreadFileId= <a class="code" href="classNLMISC_1_1CBigFile.html#o0">_ThreadFileArray</a>.<a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a1">allocate</a>(); +00098 +00099 <font class="comment">// Get a ThreadSafe handle on the file</font> +00100 CHandleFile &handle= <a class="code" href="classNLMISC_1_1CBigFile.html#o0">_ThreadFileArray</a>.<a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a2">get</a>(bnpTmp.ThreadFileId); +00101 <font class="comment">// Open the big file.</font> +00102 handle.File = fopen (sBigFileName.c_str(), <font class="stringliteral">"rb"</font>); +00103 <font class="keywordflow">if</font> (handle.File == NULL) +00104 <font class="keywordflow">return</font> <font class="keyword">false</font>; +00105 fseek (handle.File, 0, SEEK_END); +00106 uint32 nFileSize = ftell (handle.File); +00107 fseek (handle.File, nFileSize-4, SEEK_SET); +00108 uint32 nOffsetFromBegining; +00109 fread (&nOffsetFromBegining, <font class="keyword">sizeof</font>(uint32), 1, handle.File); +00110 fseek (handle.File, nOffsetFromBegining, SEEK_SET); +00111 uint32 nNbFile; +00112 fread (&nNbFile, <font class="keyword">sizeof</font>(uint32), 1, handle.File); +00113 <font class="keywordflow">for</font> (uint32 i = 0; i < nNbFile; ++i) +00114 { +00115 <font class="keywordtype">char</font> FileName[256]; +00116 uint8 nStringSize; +00117 fread (&nStringSize, 1, 1, handle.File); +00118 fread (FileName, 1, nStringSize, handle.File); +00119 FileName[nStringSize] = 0; +00120 uint32 nFileSize; +00121 fread (&nFileSize, <font class="keyword">sizeof</font>(uint32), 1, handle.File); +00122 uint32 nFilePos; +00123 fread (&nFilePos, <font class="keyword">sizeof</font>(uint32), 1, handle.File); +00124 BNPFile bnpfTmp; +00125 bnpfTmp.Pos = nFilePos; +00126 bnpfTmp.Size = nFileSize; +00127 bnpTmp.Files.insert (make_pair(<a class="code" href="namespaceNLMISC.html#a229">strlwr</a>(string(FileName)), bnpfTmp)); +00128 } +00129 fseek (handle.File, 0, SEEK_SET); +00130 +00131 <font class="keywordflow">if</font> (nOptions&<a class="code" href="namespaceNLMISC.html#a1">BF_CACHE_FILE_ON_OPEN</a>) +00132 bnpTmp.CacheFileOnOpen = <font class="keyword">true</font>; +00133 <font class="keywordflow">else</font> +00134 bnpTmp.CacheFileOnOpen = <font class="keyword">false</font>; +00135 +00136 <font class="keywordflow">if</font> (!(nOptions&<a class="code" href="namespaceNLMISC.html#a0">BF_ALWAYS_OPENED</a>)) +00137 { +00138 fclose (handle.File); +00139 handle.File = NULL; +00140 bnpTmp.AlwaysOpened = <font class="keyword">false</font>; +00141 } +00142 <font class="keywordflow">else</font> +00143 { +00144 bnpTmp.AlwaysOpened = <font class="keyword">true</font>; +00145 } +00146 +00147 <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.insert (make_pair(<a class="code" href="namespaceNLMISC.html#a229">strlwr</a>(bigfilenamealone), bnpTmp)); +00148 +00149 <font class="keywordflow">return</font> <font class="keyword">true</font>; +00150 } +00151 +00152 <font class="comment">// ***************************************************************************</font> +<a name="l00153"></a><a class="code" href="classNLMISC_1_1CBigFile.html#a1">00153</a> <font class="keywordtype">void</font> CBigFile::remove (<font class="keyword">const</font> std::string &sBigFileName) +00154 { +00155 <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.find (sBigFileName) != <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.end()) +00156 { +00157 map<string, BNP>::iterator it = <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.find (sBigFileName); +00158 BNP &rbnp = it->second; +00159 <font class="comment">/* \todo yoyo: THERE is a MAJOR drawback here: Only the FILE * of the current (surely main) thread</font> +00160 <font class="comment"> is closed. other FILE* in other threads are still opened. This is not a big issue (system close the FILE* </font> +00161 <font class="comment"> at the end of the process) and this is important so AsyncLoading of a currentTask can end up correclty </font> +00162 <font class="comment"> (without an intermediate fclose()).</font> +00163 <font class="comment"> */</font> +00164 <font class="comment">// Get a ThreadSafe handle on the file</font> +00165 CHandleFile &handle= <a class="code" href="classNLMISC_1_1CBigFile.html#o0">_ThreadFileArray</a>.<a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a2">get</a>(rbnp.ThreadFileId); +00166 <font class="comment">// close it if needed</font> +00167 <font class="keywordflow">if</font> (handle.File != NULL) +00168 { +00169 fclose (handle.File); +00170 handle.File= NULL; +00171 } +00172 <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.erase (it); +00173 } +00174 } +00175 +00176 <font class="comment">// ***************************************************************************</font> +<a name="l00177"></a><a class="code" href="classNLMISC_1_1CBigFile.html#a2">00177</a> <font class="keywordtype">bool</font> CBigFile::isBigFileAdded(<font class="keyword">const</font> std::string &sBigFileName) +00178 { +00179 <font class="comment">// Is already the same bigfile name ?</font> +00180 string bigfilenamealone = CFile::getFilename (sBigFileName); +00181 <font class="keywordflow">return</font> <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.find(bigfilenamealone) != <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.end(); +00182 } +00183 +00184 <font class="comment">// ***************************************************************************</font> +<a name="l00185"></a><a class="code" href="classNLMISC_1_1CBigFile.html#a3">00185</a> <font class="keywordtype">void</font> CBigFile::list (<font class="keyword">const</font> std::string &sBigFileName, std::vector<std::string> &vAllFiles) +00186 { +00187 string lwrFileName = <a class="code" href="namespaceNLMISC.html#a229">strlwr</a> (sBigFileName); +00188 <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.find (lwrFileName) == <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.end()) +00189 <font class="keywordflow">return</font>; +00190 vAllFiles.clear (); +00191 BNP &rbnp = <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.find (lwrFileName)->second; +00192 map<string,BNPFile>::iterator it = rbnp.Files.begin(); +00193 <font class="keywordflow">while</font> (it != rbnp.Files.end()) +00194 { +00195 vAllFiles.push_back (it->first); <font class="comment">// Add the name of the file to the return vector</font> +00196 ++it; +00197 } +00198 } +00199 +00200 <font class="comment">// ***************************************************************************</font> +<a name="l00201"></a><a class="code" href="classNLMISC_1_1CBigFile.html#a4">00201</a> <font class="keywordtype">void</font> CBigFile::removeAll () +00202 { +00203 <font class="keywordflow">while</font> (<a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.begin() != <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.end()) +00204 { +00205 <a class="code" href="classNLMISC_1_1CBigFile.html#a1">remove</a> (<a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.begin()->first); +00206 } +00207 } +00208 +00209 <font class="comment">// ***************************************************************************</font> +<a name="l00210"></a><a class="code" href="classNLMISC_1_1CBigFile.html#a5">00210</a> FILE* CBigFile::getFile (<font class="keyword">const</font> std::string &sFileName, uint32 &rFileSize, +00211 uint32 &rBigFileOffset, <font class="keywordtype">bool</font> &rCacheFileOnOpen, <font class="keywordtype">bool</font> &rAlwaysOpened) +00212 { +00213 string zeFileName, zeBigFileName, lwrFileName = <a class="code" href="namespaceNLMISC.html#a229">strlwr</a> (sFileName); +00214 uint32 i, nPos = sFileName.find (<font class="charliteral">'@'</font>); +00215 <font class="keywordflow">if</font> (nPos == string::npos) +00216 { +00217 <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"Couldn't load '%s'"</font>, sFileName.c_str()); +00218 <font class="keywordflow">return</font> NULL; +00219 } +00220 +00221 <font class="keywordflow">for</font> (i = 0; i < nPos; ++i) +00222 zeBigFileName += lwrFileName[i]; +00223 ++i; <font class="comment">// Skip @</font> +00224 <font class="keywordflow">for</font> (; i < lwrFileName.size(); ++i) +00225 zeFileName += lwrFileName[i]; +00226 +00227 <font class="keywordflow">if</font> (<a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.find (zeBigFileName) == <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.end()) +00228 { +00229 <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"Couldn't load '%s'"</font>, sFileName.c_str()); +00230 <font class="keywordflow">return</font> NULL; +00231 } +00232 +00233 BNP &rbnp = <a class="code" href="classNLMISC_1_1CBigFile.html#o1">_BNPs</a>.find (zeBigFileName)->second; +00234 if (rbnp.Files.find (zeFileName) == rbnp.Files.end()) +00235 { +00236 <a class="code" href="debug_8h.html#a2">nlwarning</a> (<font class="stringliteral">"Couldn't load '%s'"</font>, sFileName.c_str()); +00237 <font class="keywordflow">return</font> NULL; +00238 } +00239 +00240 BNPFile &rbnpfile = rbnp.Files.find (zeFileName)->second; +00241 +00242 <font class="comment">// Get a ThreadSafe handle on the file</font> +00243 CHandleFile &handle= <a class="code" href="classNLMISC_1_1CBigFile.html#o0">_ThreadFileArray</a>.<a class="code" href="classNLMISC_1_1CBigFile_1_1CThreadFileArray.html#a2">get</a>(rbnp.ThreadFileId); +00244 <font class="comment">/* If not opened, open it now. There is 2 reason for it to be not opened: </font> +00245 <font class="comment"> rbnp.AlwaysOpened==false, or it is a new thread which use it for the first time.</font> +00246 <font class="comment"> */</font> +00247 <font class="keywordflow">if</font>(handle.File== NULL) +00248 { +00249 handle.File = fopen (rbnp.BigFileName.c_str(), <font class="stringliteral">"rb"</font>); +00250 <font class="keywordflow">if</font> (handle.File == NULL) +00251 <font class="keywordflow">return</font> NULL; +00252 } +00253 +00254 rCacheFileOnOpen = rbnp.CacheFileOnOpen; +00255 rAlwaysOpened = rbnp.AlwaysOpened; +00256 rBigFileOffset = rbnpfile.Pos; +00257 rFileSize = rbnpfile.Size; +00258 <font class="keywordflow">return</font> handle.File; +00259 } +00260 +00261 } <font class="comment">// namespace NLMISC</font> +</pre></div> + +<!-- footer --> +<BR><FONT Size=+5> </FONT> +</TD> +<TD WIDTH=15><IMG SRC=http://www.nevrax.org/inc/img/pixel.gif WIDTH=15 HEIGHT=15 BORDER=0 ALT=""></TD> +</TR> +</TABLE> +</BODY> +</HTML> |