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<?php
/**
* @version 1.0 RokGZipper
* @package RokGZipper
* @copyright Copyright (C) 2008 RocketTheme, LLC. All rights reserved.
* @license GNU/GPL, see LICENSE.php
*/
// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );
jimport( 'joomla.plugin.plugin' );
jimport( 'joomla.filesystem.file' );
/**
* RokGZipper analytics plugin
*
* @author Andy Miller
* @package RokGZipper
* @subpackage System
*/
class plgSystemRokGZipper extends JPlugin
{
function plgSystemRokGZipper(& $subject, $config)
{
parent::__construct($subject, $config);
}
function cmp($a, $b)
{
if ($a == $b) {
return 0;
}
return ($a < $b) ? -1 : 1;
}
function onAfterRender()
{
global $mainframe;
if ($mainframe->isAdmin()) return;
$doc =& JFactory::getDocument();
$stylesheets = array_keys($doc->_styleSheets);
$scripts = array_keys($doc->_scripts);
plgSystemRokGZipper::processJsFiles($scripts);
plgSystemRokGZipper::processCSSFiles($stylesheets);
}
function processCSSFiles($filelist) {
$uri =& JURI::getInstance();
$base = $uri->toString( array('scheme', 'host', 'port'));
$path = JURI::root(true);
$cache_time = $this->params->get("cache_time",60);
$body = JResponse::getBody();
$ordered_files = array();
$output = array();
foreach ($filelist as $file) {
$filepath = plgSystemRokGZipper::getFilePath($file,$base,$path);
$ordered_files[dirname($filepath)][basename($filepath)] = $file;
}
foreach ($ordered_files as $dir=>$files) {
$md5sum = "";
$path = "";
//first trip through to build filename
foreach ($files as $file=>$details) {
$md5sum .= md5($details);
$detailspath = $dir.DS.$file;
if (JFile::exists($detailspath)) {
$link = "<link rel=\"stylesheet\" href=\"".$details."\" type=\"text/css\" />\n";
$body = str_replace($link,"",$body);
$path = dirname($details);
}
}
$cache_filename = "css-".md5($md5sum).".php";
$cache_fullpath = $dir.DS.$cache_filename;
//see if file is stale
if (JFile::exists($cache_fullpath)) {
$diff = (time()-filectime($cache_fullpath));
} else {
$diff = $cache_time+1;
}
if ($diff > $cache_time){
$outfile = plgSystemRokGZipper::getOutHeader("css");
foreach ($files as $file=>$details) {
$detailspath = $dir.DS.$file;
if (JFile::exists($detailspath)) {
$outfile .= "\n\n/*** " . $detailspath . " ***/\n\n" . JFile::read($detailspath);
}
}
JFile::write($cache_fullpath,$outfile);
}
$output[] = "<link rel=\"stylesheet\" href=\"".$path."/".$cache_filename."\" type=\"text/css\" />";
}
foreach ($output as $line) {
$body = str_replace('<head>',"<head>\n".$line."\n", $body);
}
JResponse::setBody($body);
}
function processJsFiles($filelist) {
$uri =& JURI::getInstance();
$base = $uri->toString( array('scheme', 'host', 'port'));
$path = JURI::Root(true);
$cache_time = $this->params->get("cache_time",60);
$body = JResponse::getBody();
$ordered_files = array();
$output = array();
$md5sum = "";
foreach ($filelist as $file) {
$filepath = plgSystemRokGZipper::getFilePath($file,$base,$path);
$ordered_files[] = array(dirname($filepath),basename($filepath),$file);
}
foreach ($ordered_files as $files) {
$dir = $files[0];
$filename = $files[1];
$details = $files[2];
$md5sum .= md5($filename);
$detailspath = $dir.DS.$filename;
if (JFile::exists($detailspath)) {
$link = "<script type=\"text/javascript\" src=\"".$details."\"></script>\n";
$body = str_replace($link,"",$body);
}
}
$cache_filename = "js-".md5($md5sum).".php";
$cache_fullpath = JPATH_CACHE.DS.$cache_filename;
//see if file is stale
if (JFile::exists($cache_fullpath)) {
$diff = (time()-filectime($cache_fullpath));
} else {
$diff = $cache_time+1;
}
if ($diff > $cache_time){
$outfile = plgSystemRokGZipper::getOutHeader("js");
foreach ($ordered_files as $files) {
$dir = $files[0];
$filename = $files[1];
$details = $files[2];
$detailspath = $dir.DS.$filename;
if (JFile::exists($detailspath)) {
$jsfile = JFile::read($detailspath);
// fix for stupid joolma code
if (strpos($filename,'joomla.javascript.js')!==false or strpos($filename,'mambojavascript.js')!==false) {
$jsfile = str_replace("// <?php !!", "// ", $jsfile);
}
$outfile .= "\n\n/*** " . $detailspath . " ***/\n\n" . $jsfile;
}
}
JFile::write($cache_fullpath,$outfile);
}
$output[] = "<script type=\"text/javascript\" src=\"".$path."/cache/".$cache_filename."\"></script>\n";
foreach ($output as $line) {
$body = str_replace('<head>',"<head>\n".$line."\n", $body);
}
JResponse::setBody($body);
}
function getFilePath($url,$base,$path) {
if (strpos($url,$base)!==false) $url = str_replace($base,"",$url);
if (strpos($url,$path)!==false) $url = str_replace($path,"",$url);
$filepath = JPATH_SITE.$url;
return $filepath;
}
function getOutHeader($type="css") {
if ($type=="css") {
$header='<?php
ob_start ("ob_gzhandler");
header("Content-type: text/css; charset: UTF-8");
header("Cache-Control: must-revalidate");
$offset = 60 * 60 ;
$ExpStr = "Expires: " .
gmdate("D, d M Y H:i:s",
time() + $offset) . " GMT";
header($ExpStr);
?>';
} else {
$header='<?php
ob_start ("ob_gzhandler");
header("Content-type: application/x-javascript; charset: UTF-8");
header("Cache-Control: must-revalidate");
$offset = 60 * 60 ;
$ExpStr = "Expires: " .
gmdate("D, d M Y H:i:s",
time() + $offset) . " GMT";
header($ExpStr);
?>';
}
return $header;
}
}