<?php    lt_include( PLOG_CLASS_PATH."class/file/unpacker/baseunpacker.class.php" );	/**	 * \ingroup File_Unpacker	 *	 * extends the BaseUnpacker class to implement support for RAR files	 *	 * It users the binary "unrar" and "gzip" to unpack the files. The location of these binaries	 * is obtained from the config parameter "path_to_unrar" (or /usr/bin/unrar)	 */	class RarUnpacker extends BaseUnpacker	{    	function RarUnpacker()        {        	$this->BaseUnpacker();        }		/**		 * @see BaseUnpacker::unpack()		 */        function unpack( $file, $destFolder )        {        	// get the paths where tar and gz are            $config =& Config::getConfig();            $unrarPath = $config->getValue( "path_to_unrar" );            if( $unrarPath == "" )            	$unrarPath = DEFAULT_UNRAR_PATH;            $cmd = "$unrarPath x $file $destFolder";            $result = exec( $cmd, $output, $retval );            //            // :KLUDGE:            // apparently, we should get something in $retval but there's nothing            // to the only way I've found to check if the command finished            // successfully was checking if the $output array is full or empty            //            return ( $retval == 0 );        }     }?>