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add funcs to read Object from a GZ stream

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This commit is contained in:
Julien Valentin
2017-11-08 15:40:11 +01:00
parent 74226e5904
commit baf6945a7a
1 changed files with 62 additions and 1 deletions
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63
src/osgPlugins/gz/ReaderWriterGZ.cpp
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@@ -45,7 +45,7 @@ class ReaderWriterGZ : public osgDB::ReaderWriter
~ReaderWriterGZ();
virtual const char* className() const { return "HTTP Protocol Model Reader"; }
virtual const char* className() const { return "GZ Archive Reader/Writer"; }
virtual ReadResult openArchive(const std::string& fileName,ArchiveStatus status, unsigned int , const Options* options) const
{
@@ -77,6 +77,67 @@ class ReaderWriterGZ : public osgDB::ReaderWriter
ReadResult readFile(ObjectType objectType, const std::string& fullFileName, const osgDB::ReaderWriter::Options* options) const;
///return the reader for fullFileName and a outuncompessed stream fetching this file in the archive
osgDB::ReaderWriter *getStreamAndReader(std::stringstream& outuncompessed, std::istream& fin, const std::string& fullFileName) const {
std::string ext = osgDB::getLowerCaseFileExtension(fullFileName);
osgDB::ReaderWriter* rw = 0;
rw = osgDB::Registry::instance()->getReaderWriterForExtension(ext);
std::string baseFileName = osgDB::getNameLessExtension(fullFileName);
std::string baseExt = osgDB::getLowerCaseFileExtension(baseFileName);
rw = osgDB::Registry::instance()->getReaderWriterForExtension(baseExt);
OSG_INFO<<classname()<<"::getStreamAndReader:"<<baseExt<<" ReaderWriter "<<rw<<std::endl;
read(fin, outuncompessed);
return rw;
}
virtual ReadResult readImage(std::istream& fin,const osgDB::ReaderWriter::Options* local_opt=NULL) const {
std::string fullFileName = local_opt->getPluginStringData("STREAM_FILENAME");
std::string ext = osgDB::getLowerCaseFileExtension(fullFileName);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
if (osgDB::containsServerAddress(fullFileName)) return ReadResult::FILE_NOT_HANDLED;
std::stringstream decstream;
osgDB::ReaderWriter* rw = getStreamAndReader(decstream, fin, fullFileName);
return readFile(IMAGE, rw, decstream, local_opt);
}
virtual ReadResult readHeightField(std::istream& fin,const osgDB::ReaderWriter::Options* local_opt=NULL) const {
std::string fullFileName = local_opt->getPluginStringData("STREAM_FILENAME");
std::string ext = osgDB::getLowerCaseFileExtension(fullFileName);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
if (osgDB::containsServerAddress(fullFileName)) return ReadResult::FILE_NOT_HANDLED;
std::stringstream decstream;
osgDB::ReaderWriter* rw = getStreamAndReader(decstream, fin, fullFileName);
return readFile(HEIGHTFIELD, rw, decstream, local_opt);
}
virtual ReadResult readNode(std::istream& fin,const osgDB::ReaderWriter::Options* local_opt=NULL) const {
std::string fullFileName = local_opt->getPluginStringData("STREAM_FILENAME");
std::string ext = osgDB::getLowerCaseFileExtension(fullFileName);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
if (osgDB::containsServerAddress(fullFileName)) return ReadResult::FILE_NOT_HANDLED;
std::stringstream decstream;
osgDB::ReaderWriter* rw = getStreamAndReader(decstream, fin, fullFileName);
return readFile(NODE, rw, decstream, local_opt);
}
virtual ReadResult readObject(std::istream& fin,const osgDB::ReaderWriter::Options* local_opt=NULL) const {
std::string fullFileName = local_opt->getPluginStringData("STREAM_FILENAME");
std::string ext = osgDB::getLowerCaseFileExtension(fullFileName);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
if (osgDB::containsServerAddress(fullFileName)) return ReadResult::FILE_NOT_HANDLED;
std::stringstream decstream;
osgDB::ReaderWriter* rw = getStreamAndReader(decstream, fin, fullFileName);
return readFile(OBJECT, rw, decstream, local_opt);
}
virtual ReadResult readArchive(std::istream& fin,const osgDB::ReaderWriter::Options* local_opt=NULL) const {
std::string fullFileName = local_opt->getPluginStringData("STREAM_FILENAME");
std::string ext = osgDB::getLowerCaseFileExtension(fullFileName);
if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
if (osgDB::containsServerAddress(fullFileName)) return ReadResult::FILE_NOT_HANDLED;
std::stringstream decstream;
osgDB::ReaderWriter* rw = getStreamAndReader(decstream, fin, fullFileName);
return readFile(ARCHIVE, rw, decstream, local_opt);
}
virtual WriteResult writeObject(const osg::Object& obj, const std::string& fileName, const osgDB::ReaderWriter::Options* options) const