Moved the .osga implementation into the src/osgPlugins/osga plugin and made
osgDB::Archive a pure virtual base class.
This commit is contained in:
Robert Osfield
@@ -23,7 +23,7 @@
|
||||
namespace osgDB {
|
||||
|
||||
|
||||
/** Base class for implementing database Archives. */
|
||||
/** Base class for implementing database Archives. See src/osgPlugins/osga for an example of a concrete implementation. */
|
||||
class OSGDB_EXPORT Archive : public ReaderWriter
|
||||
{
|
||||
public:
|
||||
@@ -37,168 +37,33 @@ class OSGDB_EXPORT Archive : public ReaderWriter
|
||||
virtual bool acceptsExtension(const std::string& /*extension*/) { return true; }
|
||||
|
||||
/** open the archive.*/
|
||||
virtual bool open(const std::string& filename, ArchiveStatus status, unsigned int indexBlockSizeHint=4096);
|
||||
virtual bool open(const std::string& filename, ArchiveStatus status, unsigned int indexBlockSizeHint=4096) = 0;
|
||||
|
||||
/** close the archive.*/
|
||||
virtual void close();
|
||||
virtual void close() = 0;
|
||||
|
||||
/** return true if file exists in archive.*/
|
||||
virtual bool fileExists(const std::string& filename) const;
|
||||
virtual bool fileExists(const std::string& filename) const = 0;
|
||||
|
||||
/** Get the file name which represents the master file recorded in the Archive.*/
|
||||
virtual std::string getMasterFileName() const;
|
||||
virtual std::string getMasterFileName() const = 0;
|
||||
|
||||
typedef std::vector<std::string> FileNameList;
|
||||
|
||||
/** Get the full list of file names available in the archive.*/
|
||||
virtual bool getFileNames(FileNameList& fileNameList) const;
|
||||
virtual bool getFileNames(FileNameList& fileNameList) const = 0;
|
||||
|
||||
|
||||
/** Read an osg::Object of specified file name from the Archive.*/
|
||||
virtual ReadResult readObject(const std::string& fileName,const Options* options=NULL);
|
||||
virtual ReadResult readObject(const std::string& /*fileName*/,const Options* =NULL) = 0;
|
||||
virtual ReadResult readImage(const std::string& /*fileName*/,const Options* =NULL) = 0;
|
||||
virtual ReadResult readHeightField(const std::string& /*fileName*/,const Options* =NULL) = 0;
|
||||
virtual ReadResult readNode(const std::string& /*fileName*/,const Options* =NULL) = 0;
|
||||
|
||||
/** Read an osg::Image of specified file name from the Archive.*/
|
||||
virtual ReadResult readImage(const std::string& fileName,const Options* options=NULL);
|
||||
|
||||
/** Read an osg::HeightField of specified file name from the Archive.*/
|
||||
virtual ReadResult readHeightField(const std::string& fileName,const Options* options=NULL);
|
||||
|
||||
/** Read an osg::Node of specified file name from the Archive.*/
|
||||
virtual ReadResult readNode(const std::string& fileName,const Options* options=NULL);
|
||||
|
||||
/** Write an osg::Object with specified file name to the Archive.*/
|
||||
virtual WriteResult writeObject(const osg::Object& obj,const std::string& fileName,const Options* options=NULL);
|
||||
|
||||
/** Write an osg::Image with specified file name to the Archive.*/
|
||||
virtual WriteResult writeImage(const osg::Image& image,const std::string& fileName,const Options* options=NULL);
|
||||
|
||||
/** Write an osg::HeightField with specified file name to the Archive.*/
|
||||
virtual WriteResult writeHeightField(const osg::HeightField& heightField,const std::string& fileName,const Options* options=NULL);
|
||||
|
||||
/** Write an osg::Node with specified file name to the Archive.*/
|
||||
virtual WriteResult writeNode(const osg::Node& node,const std::string& fileName,const Options* options=NULL);
|
||||
|
||||
|
||||
protected:
|
||||
|
||||
#if defined(_MSC_VER)
|
||||
typedef __int64 pos_type;
|
||||
typedef __int64 size_type;
|
||||
#else
|
||||
typedef unsigned long long pos_type;
|
||||
typedef unsigned long long size_type;
|
||||
#endif
|
||||
|
||||
typedef std::pair<pos_type, size_type> PositionSizePair;
|
||||
typedef std::map<std::string, PositionSizePair> FileNamePositionMap;
|
||||
|
||||
class IndexBlock : public osg::Referenced
|
||||
{
|
||||
public:
|
||||
IndexBlock(unsigned int blockSize=0);
|
||||
|
||||
inline pos_type getPosition() const { return _filePosition; }
|
||||
|
||||
inline unsigned int getBlockSize() const { return _blockSize; }
|
||||
|
||||
|
||||
void setPositionNextIndexBlock(pos_type position);
|
||||
|
||||
inline pos_type getPositionNextIndexBlock() const { return _filePositionNextIndexBlock; }
|
||||
|
||||
|
||||
static IndexBlock* read(std::istream& in, bool doEndianSwap);
|
||||
|
||||
std::string getFirstFileName() const;
|
||||
|
||||
bool getFileReferences(FileNamePositionMap& indexMap) const;
|
||||
|
||||
|
||||
inline bool requiresWrite() const { return _requiresWrite; }
|
||||
|
||||
void write(std::ostream& out);
|
||||
|
||||
inline bool spaceAvailable(pos_type, size_type, const std::string& filename) const
|
||||
{
|
||||
unsigned requiredSize = sizeof(pos_type)+sizeof(size_type)+sizeof(unsigned int)+filename.size();
|
||||
return (_offsetOfNextAvailableSpace + requiredSize)<_blockSize;
|
||||
}
|
||||
|
||||
bool addFileReference(pos_type position, size_type size, const std::string& filename);
|
||||
|
||||
|
||||
|
||||
protected:
|
||||
|
||||
void allocateData(unsigned int blockSize);
|
||||
|
||||
virtual ~IndexBlock();
|
||||
bool _requiresWrite;
|
||||
pos_type _filePosition;
|
||||
|
||||
unsigned int _blockSize;
|
||||
pos_type _filePositionNextIndexBlock;
|
||||
unsigned int _offsetOfNextAvailableSpace;
|
||||
char* _data;
|
||||
};
|
||||
|
||||
/** Functor used in internal implementations.*/
|
||||
struct ReadFunctor
|
||||
{
|
||||
ReadFunctor(const std::string& filename, const ReaderWriter::Options* options):
|
||||
_filename(filename),
|
||||
_options(options) {}
|
||||
|
||||
virtual ~ReadFunctor() {}
|
||||
virtual ReaderWriter::ReadResult doRead(ReaderWriter& rw, std::istream& input) const = 0;
|
||||
|
||||
std::string _filename;
|
||||
const ReaderWriter::Options* _options;
|
||||
};
|
||||
|
||||
struct ReadObjectFunctor;
|
||||
struct ReadImageFunctor;
|
||||
struct ReadHeightFieldFunctor;
|
||||
struct ReadNodeFunctor;
|
||||
|
||||
/** Functor used in internal implementations.*/
|
||||
struct WriteFunctor
|
||||
{
|
||||
WriteFunctor(const std::string& filename, const ReaderWriter::Options* options):
|
||||
_filename(filename),
|
||||
_options(options) {}
|
||||
|
||||
virtual ~WriteFunctor() {}
|
||||
virtual ReaderWriter::WriteResult doWrite(ReaderWriter& rw, std::ostream& output) const = 0;
|
||||
|
||||
std::string _filename;
|
||||
const ReaderWriter::Options* _options;
|
||||
};
|
||||
|
||||
struct WriteObjectFunctor;
|
||||
struct WriteImageFunctor;
|
||||
struct WriteHeightFieldFunctor;
|
||||
struct WriteNodeFunctor;
|
||||
|
||||
|
||||
ReaderWriter::ReadResult read(const ReadFunctor& readFunctor);
|
||||
ReaderWriter::WriteResult write(const WriteFunctor& writeFunctor);
|
||||
|
||||
typedef std::list< osg::ref_ptr<IndexBlock> > IndexBlockList;
|
||||
|
||||
void writeIndexBlocks();
|
||||
|
||||
bool addFileReference(pos_type position, size_type size, const std::string& fileName);
|
||||
|
||||
static float s_currentSupportedVersion;
|
||||
float _version;
|
||||
ArchiveStatus _status;
|
||||
std::ifstream _input;
|
||||
std::fstream _output;
|
||||
|
||||
std::string _masterFileName;
|
||||
IndexBlockList _indexBlockList;
|
||||
FileNamePositionMap _indexMap;
|
||||
virtual WriteResult writeObject(const osg::Object& /*obj*/,const std::string& /*fileName*/,const Options* =NULL) = 0;
|
||||
virtual WriteResult writeImage(const osg::Image& /*image*/,const std::string& /*fileName*/,const Options* =NULL) = 0;
|
||||
virtual WriteResult writeHeightField(const osg::HeightField& /*heightField*/,const std::string& /*fileName*/,const Options* =NULL) = 0;
|
||||
virtual WriteResult writeNode(const osg::Node& /*node*/,const std::string& /*fileName*/,const Options* =NULL) = 0;
|
||||
|
||||
|
||||
|
||||
};
|
||||
|
||||
Reference in New Issue
Block a user