/**
* Unpack file by BZIP2 compressor.
*
* @param string $source
* @param string $destination
* @return string
*/
public function unpack($source, $destination)
{
if (is_dir($destination)) {
$file = $this->getFilename($source);
$destination = $destination . $file;
}
$archiveReader = new Mage_Archive_Helper_File_Bz($source);
$archiveReader->open('r');
$fileWriter = new Mage_Archive_Helper_File($destination);
$fileWriter->open('w');
while (!$archiveReader->eof()) {
$fileWriter->write($archiveReader->read());
}
return $destination;
}
/**
* Overwritten Mage_Archive_Helper_File constructor with zlib extension check
* @param string $filePath
* @throws Mage_Exception
*/
public function __construct($filePath)
{
if (!function_exists('gzopen')) {
throw new Mage_Exception('PHP Extensions "zlib" must be loaded.');
}
parent::__construct($filePath);
}
/**
* Extract next file from tarball by its $header information and save it to $destination
*
* @param array $fileHeader
* @param string $destination
*/
protected function _extractAndWriteFile($fileHeader, $destination)
{
$fileWriter = new Mage_Archive_Helper_File($destination);
$fileWriter->open('w', $fileHeader['mode']);
$archiveReader = $this->_getReader();
$filesize = $fileHeader['size'];
$bytesExtracted = 0;
while ($filesize > $bytesExtracted && !$archiveReader->eof()) {
$block = $archiveReader->read(self::TAR_BLOCK_SIZE);
$nonExtractedBytesCount = $filesize - $bytesExtracted;
$data = substr($block, 0, $nonExtractedBytesCount);
$fileWriter->write($data);
$bytesExtracted += strlen($block);
}
}
