83bf813e58
instead of osgDB::Registry where it original lay. This has been done to allow fileName strings to be encode data rather than just file names, such as one requires when using PagedLOD along with plugins for doing dynamic tesselation.
126 lines
4.0 KiB
C++
126 lines
4.0 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/ReadFile>
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#include <osgDB/FileUtils>
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#include <osgDB/FileNameUtils>
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#include <osgDB/Registry>
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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 ReaderWriterTGZ : public osgDB::ReaderWriter
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{
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public:
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virtual const char* className() { return "TGZ 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,"tgz");
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}
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virtual ReadResult readNode(const std::string& file, const osgDB::ReaderWriter::Options*)
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{
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std::string ext = osgDB::getLowerCaseFileExtension(file);
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if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
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std::string fileName = osgDB::findDataFile( file );
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if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
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osg::notify(osg::INFO)<< "ReaderWriterTGZ::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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strcpy(dirname, "C:/Windows/Temp/.osgdb_tgz");
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mkdir( dirname);
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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 xfz %s %s",
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fileName.c_str(), dirname );
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#endif
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#if defined(__linux) || defined(__CYGWIN__)
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sprintf( dirname, "/tmp/.tgz%06d", getpid());
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mkdir( dirname, 0700 );
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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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#endif
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#ifdef __sgi
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sprintf( dirname, "/tmp/.tgz%06d", getpid());
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mkdir( dirname, 0700 );
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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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#endif
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system( command );
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osg::Group *grp = new osg::Group;
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osgDB::PushAndPopDataPath tmppath(dirname );
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// deactivate the automatic generation of images to geode's.
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bool prevCreateNodeFromImage = osgDB::Registry::instance()->getCreateNodeFromImage();
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osgDB::Registry::instance()->setCreateNodeFromImage(false);
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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::getFileExtension(*itr);
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if (!acceptsExtension(file_ext) &&
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*itr!=std::string(".") &&
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*itr!=std::string(".."))
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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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// restorre original state of the automatic generation of images to geode's.
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osgDB::Registry::instance()->setCreateNodeFromImage(prevCreateNodeFromImage);
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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<ReaderWriterTGZ> g_readerWriter_TGZ_Proxy;
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