163 lines
5.4 KiB
C++
163 lines
5.4 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 <stdlib.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 <osg/os_utils>
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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() const { return "TGZ Database Reader/Writer"; }
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ReaderWriterTGZ()
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{
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supportsExtension("tgz","Tar gzip'd archive format");
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}
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virtual ReadResult readObject(const std::string& fileName, const osgDB::ReaderWriter::Options* options) const
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{
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return readNode(fileName, options);
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}
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virtual ReadResult readNode(const std::string& file, const osgDB::ReaderWriter::Options* options) const
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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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OSG_NOTICE<<"file="<<file<<std::endl;
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std::string fileName = osgDB::findDataFile( file, options );
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OSG_NOTICE<<"fileName="<<fileName<<std::endl;
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if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;
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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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if ( getenv("TEMP") != NULL ){
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strcpy(dirname, getenv("TEMP"));
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}else{
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//TEMP environment variable not set so pick current directory.
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strcpy(dirname, "./");
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}
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strcat(dirname, ".osgdb_tgz");
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if (mkdir( dirname)!=0)
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{
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return ReadResult::ERROR_IN_READING_FILE;
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}
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// Using tar.exe from http://www.cygwin.com/
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// tar.exe must be in your path. (PATH environment variable).
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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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#if defined(__linux) || defined(__CYGWIN__)
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sprintf( dirname, "/tmp/.tgz%06d", getpid());
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if (mkdir( dirname, 0700 )!=0)
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{
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return ReadResult::ERROR_IN_READING_FILE;
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}
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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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if (mkdir( dirname, 0700 )!=0)
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{
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return ReadResult::ERROR_IN_READING_FILE;
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}
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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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OSG_NOTICE<<"Running command '"<<command<<"'"<<std::endl;
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int result = osg_system( command );
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if (result!=0) return ReadResult::ERROR_IN_READING_FILE;
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osg::ref_ptr<osg::Group> grp = new osg::Group;
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OSG_NOTICE<<"Done"<<std::endl;
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osg::ref_ptr<osgDB::ReaderWriter::Options> local_options = options ? static_cast<osgDB::ReaderWriter::Options*>(options->clone(osg::CopyOp::SHALLOW_COPY)) : new osgDB::ReaderWriter::Options;
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local_options->getDatabasePathList().push_front(dirname);
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OSG_NOTICE<<"local_options->getDatabasePathList().="<<local_options->getDatabasePathList().front()<<std::endl;
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OSG_NOTICE<<"dirname="<<dirname<<std::endl;
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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::ref_ptr<osg::Node> node = osgDB::readRefNodeFile(*itr, local_options.get());
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if (node) 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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sprintf( command, "erase /F /Q /S \"%s\"", dirname );
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#else
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sprintf( command, "rm -rf %s", dirname );
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#endif
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OSG_NOTICE<<"Running command '"<<command<<"'"<<std::endl;
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result = osg_system( command );
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if (result!=0) return ReadResult::ERROR_IN_READING_FILE;
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if( grp->getNumChildren() == 0 )
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{
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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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REGISTER_OSGPLUGIN(tgz, ReaderWriterTGZ)
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