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<?php
/**
* ADOdb Session Management
*
* This file is part of ADOdb, a Database Abstraction Layer library for PHP.
*
* @package ADOdb
* @link https://adodb.org Project's web site and documentation
* @link https://github.com/ADOdb/ADOdb Source code and issue tracker
*
* The ADOdb Library is dual-licensed, released under both the BSD 3-Clause
* and the GNU Lesser General Public Licence (LGPL) v2.1 or, at your option,
* any later version. This means you can use it in proprietary products.
* See the LICENSE.md file distributed with this source code for details.
* @license BSD-3-Clause
* @license LGPL-2.1-or-later
*
* @copyright 2000-2013 John Lim
* @copyright 2014 Damien Regad, Mark Newnham and the ADOdb community
*/
if (!function_exists('gzcompress')) {
trigger_error('gzip functions are not available', E_USER_ERROR);
return 0;
}
/*
*/
class ADODB_Compress_Gzip {
/**
*/
var $_level = null;
/**
*/
var $_min_length = 1;
/**
*/
function getLevel() {
return $this->_level;
}
/**
*/
function setLevel($level) {
assert($level >= 0);
assert($level <= 9);
$this->_level = (int) $level;
}
/**
*/
function getMinLength() {
return $this->_min_length;
}
/**
*/
function setMinLength($min_length) {
assert($min_length >= 0);
$this->_min_length = (int) $min_length;
}
/**
*/
function __construct($level = null, $min_length = null) {
if (!is_null($level)) {
$this->setLevel($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->_level)) {
return gzcompress($data, $this->_level);
} else {
return gzcompress($data);
}
}
/**
*/
function read($data, $key) {
return $data ? gzuncompress($data) : $data;
}
}
return 1;
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