<?php
/*
V5.18 3 Sep 2012 (c) 2000-2012 John Lim (jlim#natsoft.com). 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('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) $min_length;
}
/**
*/
function ADODB_Compress_Gzip($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;
?>
|
Download
