root/trunk/app/webroot/css.php

<?php
/* SVN FILE: $Id: css.php 6311 2008-01-02 06:33:52Z phpnut $ */
/**
 * Short description for file.
 *
 * Long description for file
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework <http://www.cakephp.org/>
 * Copyright 2005-2008, Cake Software Foundation, Inc.
 *                              1785 E. Sahara Avenue, Suite 490-204
 *                              Las Vegas, Nevada 89104
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright       Copyright 2005-2008, Cake Software Foundation, Inc.
 * @link                http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package         cake
 * @subpackage      cake.app.webroot
 * @since           CakePHP(tm) v 0.2.9
 * @version         $Revision: 6311 $
 * @modifiedby      $LastChangedBy: phpnut $
 * @lastmodified    $Date: 2008-01-02 00:33:52 -0600 (Wed, 02 Jan 2008) $
 * @license         http://www.opensource.org/licenses/mit-license.php The MIT License
 */
if (!defined('CAKE_CORE_INCLUDE_PATH')) {
    header('HTTP/1.1 404 Not Found');
    exit('File Not Found');
}
/**
 * Enter description here...
 */
    uses('file');
/**
 * Enter description here...
 *
 * @param unknown_type $path
 * @param unknown_type $name
 * @return unknown
 */
    function make_clean_css($path, $name) {
        require(VENDORS . 'csspp' . DS . 'csspp.php');
        $data = file_get_contents($path);
        $csspp = new csspp();
        $output = $csspp->compress($data);
        $ratio = 100 - (round(strlen($output) / strlen($data), 3) * 100);
        $output = " /* file: $name, ratio: $ratio% */ " . $output;
        return $output;
    }
/**
 * Enter description here...
 *
 * @param unknown_type $path
 * @param unknown_type $content
 * @return unknown
 */
    function write_css_cache($path, $content) {
        if (!is_dir(dirname($path))) {
            mkdir(dirname($path));
        }
        $cache = new File($path);
        return $cache->write($content);
    }

    if (preg_match('|\.\.|', $url) || !preg_match('|^ccss/(.+)$|i', $url, $regs)) {
        die('Wrong file name.');
    }

    $filename = 'css/' . $regs[1];
    $filepath = CSS . $regs[1];
    $cachepath = CACHE . 'css' . DS . str_replace(array('/','\\'), '-', $regs[1]);

    if (!file_exists($filepath)) {
        die('Wrong file name.');
    }

    if (file_exists($cachepath)) {
        $templateModified = filemtime($filepath);
        $cacheModified = filemtime($cachepath);

        if ($templateModified > $cacheModified) {
            $output = make_clean_css($filepath, $filename);
            write_css_cache($cachepath, $output);
        } else {
            $output = file_get_contents($cachepath);
        }
    } else {
        $output = make_clean_css($filepath, $filename);
        write_css_cache($cachepath, $output);
        $templateModified = time();
    }

    header("Date: " . date("D, j M Y G:i:s ", $templateModified) . 'GMT');
    header("Content-Type: text/css");
    header("Expires: " . gmdate("D, j M Y H:i:s", time() + DAY) . " GMT");
    header("Cache-Control: cache"); // HTTP/1.1
    header("Pragma: cache");        // HTTP/1.0
    print $output;
?>