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Added new osgDB::Archive class, and osgarchive example. These are both

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very early beginnings so do not function yet.
This commit is contained in:
Robert Osfield
2004-10-25 19:16:38 +00:00
parent b62ef99fd9
commit 66836ef3d0
9 changed files with 378 additions and 22 deletions
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71
include/osgDB/Archive
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@@ -16,49 +16,76 @@
#include <osgDB/ReaderWriter>
#include <fstream>
namespace osgDB {
/** Base class for implementing database Archives. */
class OSGDB_EXPORT Archive : public ReaderWriter
{
public:
Archive();
virtual ~Archive();
virtual const char* className() { return "Archive" };
virtual const char* libraryName() const { return "osgDB"; }
virtual const char* className() const { return "Archive"; }
virtual bool acceptsExtension(const std::string& /*extension*/) { return true; }
enum Status
{
READ,
WRITE
};
/** open the archive.*/
virtual void open(const std::string& filename) {}
virtual void create(const std::string& filename, unsigned int indexBlockSize=4096);
/** open the archive.*/
virtual void open(const std::string& filename, Status status);
/** close the archive.*/
virtual void close() {}
virtual void close();
/** return true if file exists in archive.*/
virtual bool fileExists(const std::string& filename) const {}
virtual bool fileExists(const std::string& filename) const;
virtual ReadResult readObject(const std::string& /*fileName*/,const Options* =NULL) { return ReadResult(ReadResult::FILE_NOT_HANDLED); }
virtual ReadResult readImage(const std::string& /*fileName*/,const Options* =NULL) { return ReadResult(ReadResult::FILE_NOT_HANDLED); }
virtual ReadResult readHeightField(const std::string& /*fileName*/,const Options* =NULL) { return ReadResult(ReadResult::FILE_NOT_HANDLED); }
virtual ReadResult readNode(const std::string& /*fileName*/,const Options* =NULL) { return ReadResult(ReadResult::FILE_NOT_HANDLED); }
virtual ReadResult readObject(const std::string& fileName,const Options* options=NULL);
virtual ReadResult readImage(const std::string& fileName,const Options* options=NULL);
virtual ReadResult readHeightField(const std::string& fileName,const Options* options=NULL);
virtual ReadResult readNode(const std::string& fileName,const Options* options=NULL);
virtual WriteResult writeObject(const osg::Object& /*obj*/,const std::string& /*fileName*/,const Options* =NULL) {return WriteResult(WriteResult::FILE_NOT_HANDLED); }
virtual WriteResult writeImage(const osg::Image& /*image*/,const std::string& /*fileName*/,const Options* =NULL) {return WriteResult(WriteResult::FILE_NOT_HANDLED); }
virtual WriteResult writeHeightField(const osg::HeightField& /*heightField*/,const std::string& /*fileName*/,const Options* =NULL) {return WriteResult(WriteResult::FILE_NOT_HANDLED); }
virtual WriteResult writeNode(const osg::Node& /*node*/,const std::string& /*fileName*/,const Options* =NULL) { return WriteResult(WriteResult::FILE_NOT_HANDLED); }
virtual WriteResult writeObject(const osg::Object& obj,const std::string& fileName,const Options* options=NULL);
virtual WriteResult writeImage(const osg::Image& image,const std::string& fileName,const Options* options=NULL);
virtual WriteResult writeHeightField(const osg::HeightField& heightField,const std::string& fileName,const Options* options=NULL);
virtual WriteResult writeNode(const osg::Node& node,const std::string& fileName,const Options* options=NULL);
virtual ReadResult readObject(std::istream& /*fin*/,const Options* =NULL) { return ReadResult(ReadResult::FILE_NOT_HANDLED); }
virtual ReadResult readImage(std::istream& /*fin*/,const Options* =NULL) { return ReadResult(ReadResult::FILE_NOT_HANDLED); }
virtual ReadResult readHeightField(std::istream& /*fin*/,const Options* =NULL) { return ReadResult(ReadResult::FILE_NOT_HANDLED); }
virtual ReadResult readNode(std::istream& /*fin*/,const Options* =NULL) { return ReadResult(ReadResult::FILE_NOT_HANDLED); }
virtual ReadResult readObject(std::istream& fin,const Options* options=NULL);
virtual ReadResult readImage(std::istream& fin,const Options* options=NULL);
virtual ReadResult readHeightField(std::istream& fin,const Options* options=NULL);
virtual ReadResult readNode(std::istream& fin,const Options* options=NULL);
virtual WriteResult writeObject(const osg::Object& /*obj*/,std::ostream& /*fout*/,const Options* =NULL) {return WriteResult(WriteResult::FILE_NOT_HANDLED); }
virtual WriteResult writeImage(const osg::Image& /*image*/,std::ostream& /*fout*/,const Options* =NULL) {return WriteResult(WriteResult::FILE_NOT_HANDLED); }
virtual WriteResult writeHeightField(const osg::HeightField& /*heightField*/,std::ostream& /*fout*/,const Options* =NULL) {return WriteResult(WriteResult::FILE_NOT_HANDLED); }
virtual WriteResult writeNode(const osg::Node& /*node*/,std::ostream& /*fout*/,const Options* =NULL) { return WriteResult(WriteResult::FILE_NOT_HANDLED); }
virtual WriteResult writeObject(const osg::Object& obj,std::ostream& fout,const Options* options=NULL);
virtual WriteResult writeImage(const osg::Image& image,std::ostream& fout,const Options* options=NULL);
virtual WriteResult writeHeightField(const osg::HeightField& heightField,std::ostream& fout,const Options* options=NULL);
virtual WriteResult writeNode(const osg::Node& node,std::ostream& fout,const Options* options=NULL);
protected:
typedef std::istream::pos_type pos_type;
typedef std::map<std::string, pos_type> FileNamePositionMap;
Status _status;
std::ifstream _input;
std::ofstream _output;
FileNamePositionMap _indexMap;
};