102 lines
3.0 KiB
C++
102 lines
3.0 KiB
C++
#include <osg/Notify>
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#include <osgDB/FileUtils>
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#include <osgDB/FileNameUtils>
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#include "OSGA_Archive.h"
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class ReaderWriterOSGA : public osgDB::ReaderWriter
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{
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public:
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ReaderWriterOSGA() { }
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virtual const char* className() const { return "OpenSceneGraph Archive 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,"osga");
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}
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virtual ReadResult openArchive(const std::string& file,ArchiveStatus status, unsigned int indexBlockSize = 4096, const Options* = NULL)
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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())
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{
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if (status==READ) return ReadResult::FILE_NOT_FOUND;
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fileName = file;
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}
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osg::ref_ptr<OSGA_Archive> archive = new OSGA_Archive;
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if (!archive->open(fileName, status, indexBlockSize))
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{
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return ReadResult(ReadResult::FILE_NOT_HANDLED);
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}
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return archive.get();
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}
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/** open an archive for reading.*/
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virtual ReadResult openArchive(std::istream& fin,const Options*)
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{
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osg::ref_ptr<OSGA_Archive> archive = new OSGA_Archive;
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if (!archive->open(fin))
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{
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return ReadResult(ReadResult::FILE_NOT_HANDLED);
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}
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return archive.get();
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}
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virtual ReadResult readImage(const std::string& file,const Options* options)
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{
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ReadResult result = openArchive(file,osgDB::Archive::READ);
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if (!result.validArchive()) return result;
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osg::ref_ptr<ReaderWriter::Options> local_options = new ReaderWriter::Options;
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local_options->setDatabasePath(file);
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ReadResult result_2 = result.getArchive()->readImage(result.getArchive()->getMasterFileName(),local_options.get());
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// register the archive so that it is cached for future use.
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osgDB::Registry::instance()->addToArchiveCache(file, result.getArchive());
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return result_2;
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}
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virtual ReadResult readNode(const std::string& file,const Options* options)
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{
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ReadResult result = openArchive(file,osgDB::Archive::READ);
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if (!result.validArchive()) return result;
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osg::ref_ptr<ReaderWriter::Options> local_options = new ReaderWriter::Options;
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local_options->setDatabasePath(file);
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ReadResult result_2 = result.getArchive()->readNode(result.getArchive()->getMasterFileName(),local_options.get());
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// register the archive so that it is cached for future use.
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osgDB::Registry::instance()->addToArchiveCache(file, result.getArchive());
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return result_2;
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}
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protected:
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};
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// register with Registry to instantiate the above reader/writer.
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osgDB::RegisterReaderWriterProxy<ReaderWriterOSGA> g_osgaReaderWriterProxy;
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