/**
* Generate compound index file
*/
protected function _generateCFS()
{
$cfsFile = $this->_directory->createFile($this->_name . '.cfs');
$cfsFile->writeVInt(count($this->_files));
$dataOffsetPointers = array();
foreach ($this->_files as $fileName) {
$dataOffsetPointers[$fileName] = $cfsFile->tell();
$cfsFile->writeLong(0);
// write dummy data
$cfsFile->writeString($fileName);
}
foreach ($this->_files as $fileName) {
// Get actual data offset
$dataOffset = $cfsFile->tell();
// Seek to the data offset pointer
$cfsFile->seek($dataOffsetPointers[$fileName]);
// Write actual data offset value
$cfsFile->writeLong($dataOffset);
// Seek back to the end of file
$cfsFile->seek($dataOffset);
$dataFile = $this->_directory->getFileObject($fileName);
$byteCount = $this->_directory->fileLength($fileName);
while ($byteCount > 0) {
$data = $dataFile->readBytes(min($byteCount, 131072));
$byteCount -= strlen($data);
$cfsFile->writeBytes($data);
}
$this->_directory->deleteFile($fileName);
}
}
/**
* Update segments file by adding current segment to a list
* @todo !!!!!Finish the implementation
*
* @throws Zend_Search_Lucene_Exception
*/
private function _updateSegments()
{
$segmentsFile = $this->_directory->getFileObject('segments');
$newSegmentFile = $this->_directory->createFile('segments.new');
$newSegmentFile->writeInt((int) 0xffffffff);
$newSegmentFile->writeLong($this->_version);
$newSegmentFile->writeInt($this->_segmentNameCounter);
$newSegmentFile->writeInt($this->_segments + count($this->_newSegments));
$segmentsFile->seek(20);
$newSegmentFile->writeBytes($segmentsFile->readBytes($this->_directory->fileLength('segments') - 20));
foreach ($this->_newSegments as $segmentName => $segmentInfo) {
$newSegmentFile->writeString($segmentName);
$newSegmentFile->writeInt($segmentInfo->count());
}
$this->_directory->renameFile('segments.new', 'segments');
}
