<?php/*V4.94 23 Jan 2007  (c) 2000-2007 John Lim (jlim#natsoft.com.my). All rights reserved.         Contributed by Ross Smith (adodb@netebb.com).   Released under both BSD license and Lesser GPL library license.  Whenever there is any discrepancy between the two licenses,  the BSD license will take precedence.	  Set tabs to 4 for best viewing.*/if (!function_exists('bzcompress')) {	trigger_error('bzip2 functions are not available', E_USER_ERROR);	return 0;}/**/class ADODB_Compress_Bzip2 {	/**	 */	var $_block_size = null;	/**	 */	var $_work_level = null;	/**	 */	var $_min_length = 1;	/**	 */	function getBlockSize() {		return $this->_block_size;	}	/**	 */	function setBlockSize($block_size) {		assert('$block_size >= 1');		assert('$block_size <= 9');		$this->_block_size = (int) $block_size;	}	/**	 */	function getWorkLevel() {		return $this->_work_level;	}	/**	 */	function setWorkLevel($work_level) {		assert('$work_level >= 0');		assert('$work_level <= 250');		$this->_work_level = (int) $work_level;	}	/**	 */	function getMinLength() {		return $this->_min_length;	}	/**	 */	function setMinLength($min_length) {		assert('$min_length >= 0');		$this->_min_length = (int) $min_length;	}	/**	 */	function ADODB_Compress_Bzip2($block_size = null, $work_level = null, $min_length = null) {		if (!is_null($block_size)) {			$this->setBlockSize($block_size);		}		if (!is_null($work_level)) {			$this->setWorkLevel($work_level);		}		if (!is_null($min_length)) {			$this->setMinLength($min_length);		}	}	/**	 */	function write($data, $key) {		if (strlen($data) < $this->_min_length) {			return $data;		}		if (!is_null($this->_block_size)) {			if (!is_null($this->_work_level)) {				return bzcompress($data, $this->_block_size, $this->_work_level);			} else {				return bzcompress($data, $this->_block_size);			}		}		return bzcompress($data);	}	/**	 */	function read($data, $key) {		return $data ? bzdecompress($data) : $data;	}}return 1;?>