115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
#include <sys/stat.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <osg/Geode>
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#include <osg/Group>
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#include <osg/Notify>
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#include <osgDB/Registry>
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#include <osgDB/ReadFile>
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#include <osgDB/FileUtils>
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#include <osgDB/FileNameUtils>
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#if defined(_WIN32) && !defined(__CYGWIN__)
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#include <direct.h>
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#else
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#include <unistd.h>
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#endif
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using namespace osg;
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class sgReaderWriterOSGTGZ : public osgDB::ReaderWriter
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{
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public:
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virtual const char* className() { return "OSGTGZ Database Reader/Writer"; }
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virtual bool acceptsExtension(const std::string& extension)
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{
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return osgDB::equalCaseInsensitive(extension,"osgtgz");
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}
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virtual ReadResult readNode(const std::string& fileName, const osgDB::ReaderWriter::Options*)
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{
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std::string ext = osgDB::getFileExtension(fileName);
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if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
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osg::notify(osg::INFO)<<"sgReaderWriterOSGTGZ::readNode( "<<fileName.c_str()<<" )\n";
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char dirname[128];
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char command[1024];
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#if defined(_WIN32) && !defined(__CYGWIN__)
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sprintf( dirname, "C:/Windows/Temp/.osgdb_osgtgz");
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// note, the following C option under windows does not seem to work...
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// will pursue an better tar.exe later. RO.
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sprintf( command,
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"tar xfCz %s %s",
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fileName.c_str(), dirname );
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mkdir( dirname);
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#endif
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#if defined(__linux) || defined(__CYGWIN__)
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sprintf( dirname, "/tmp/.osg%06d", getpid());
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sprintf( command,
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"tar xfCz %s %s",
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fileName.c_str(), dirname );
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mkdir( dirname, 0700 );
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#endif
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#ifdef __sgi
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sprintf( dirname, "/tmp/.osg%06d", getpid());
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sprintf( command,
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"cp %s %s; cd %s;"
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"gzcat %s | tar xf -",
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fileName.c_str(), dirname, dirname,
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fileName.c_str() );
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mkdir( dirname, 0700 );
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#endif
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system( command );
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osg::Group *grp = new osg::Group;
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osgDB::setFilePath( dirname );
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osgDB::DirectoryContents contents = osgDB::getDirectoryContents(dirname);
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for(osgDB::DirectoryContents::iterator itr = contents.begin();
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itr != contents.end();
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++itr)
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{
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std::string file_ext = osgDB::getLowerCaseFileExtension(*itr);
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if (osgDB::equalCaseInsensitive(file_ext,"osg"))
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{
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osg::Node *node = osgDB::readNodeFile( *itr );
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grp->addChild( node );
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}
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}
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#if defined(_WIN32) && !defined(__CYGWIN__)
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// note, is this the right command for windows?
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// is there any way of overiding the Y/N option? RO.
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sprintf( command, "erase %s", dirname );
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system( command );
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#else
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sprintf( command, "rm -rf %s", dirname );
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system( command );
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#endif
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if( grp->getNumChildren() == 0 )
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{
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grp->unref();
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return ReadResult::FILE_NOT_HANDLED;
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}
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return grp;
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}
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};
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// now register with sgRegistry to instantiate the above
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// reader/writer.
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osgDB::RegisterReaderWriterProxy<sgReaderWriterOSGTGZ> g_readerWriter_OSGTGZ_Proxy;
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