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<?php
namespace JchOptimize;
/**
* JCH Optimize - Aggregate and minify external resources for optmized downloads
*
* @author Samuel Marshall <sdmarshall73@gmail.com>
* @copyright Copyright (c) 2010 Samuel Marshall
* @license GNU/GPLv3, See LICENSE file
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* If LICENSE file missing, see <http://www.gnu.org/licenses/>.
*/
class Optimize
{
//regex for double quoted strings
const DOUBLE_QUOTE_STRING = '"(?>(?:\\\\.)?[^\\\\"]*+)+?(?:"|(?=$))';
//regex for single quoted string
const SINGLE_QUOTE_STRING = "'(?>(?:\\\\.)?[^\\\\']*+)+?(?:'|(?=$))";
//regex for block comments
const BLOCK_COMMENTS = '/\*(?>[^/\*]++|//|\*(?!/)|(?<!\*)/)*+\*/';
//regex for line comments
const LINE_COMMENTS = '//[^\r\n]*+';
protected $_debug = false;
protected $_regexNum = -1;
protected $_limit =0;
/**
*
* @param type $rx
* @param type $code
* @param type $regexNum
* @return boolean
*/
protected function _debug($rx, $code, $regexNum = 0)
{
if (!$this->_debug) return false;
static $pstamp = 0;
if($pstamp === 0)
{
$pstamp = microtime(true);
return;
}
$nstamp = microtime(true);
$time = $nstamp - $pstamp;
if($time > $this->_limit)
{
print 'num=' . $regexNum . "\n";
print 'time=' . $time . "\n\n";
}
if ($regexNum == $this->_regexNum)
{
print $rx . "\n";
print $code . "\n\n";
}
$pstamp = $nstamp;
}
/**
*
* @staticvar type $tm
* @param type $rx
* @param type $code
* @param type $replacement
* @param type $regex_num
* @return type
*/
protected function _replace($rx, $replacement, $code, $regex_num, $callback=null)
{
static $tm = false;
if($tm === false)
{
$this->_debug('', '');
$tm = true;
}
if(empty($callback))
{
$op_code = preg_replace($rx, $replacement, $code);
}
else
{
$op_code = preg_replace_callback($rx, $callback, $code);
}
$this->_debug($rx, $code, $regex_num);
if (preg_last_error() != PREG_NO_ERROR) throw new \Exception;
return $op_code;
}
}