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<?php
/**
* @version $Id: gantrygzipper.class.php 6491 2013-01-15 02:25:56Z btowles $
* @author RocketTheme http://www.rockettheme.com
* @copyright Copyright (C) 2007 - 2016 RocketTheme, LLC
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 only
*
* Gantry uses the Joomla Framework (http://www.joomla.org), a GNU/GPLv2 content management system
*
*/
defined('GANTRY_VERSION') or die();
/**
* @package gantry
* @subpackage core
*/
class GantryGZipper
{
function process()
{
}
public static function processCSSFiles()
{
/** @global $gantry Gantry */
global $gantry;
$cache_time = $gantry->get("gzipper-time");
$expires_time = $gantry->get("gzipper-expirestime", 1440);
$strip_css = $gantry->get("gzipper-stripwhitespace", 1);
$grouped_priories = array();
$output = array();
foreach ($gantry->_styles as $priorities) {
foreach ($priorities as $links) {
$css_links[$links->getPath()] = $links->getUrl();
}
}
// $css_links = $gantry->_styles;
ksort($gantry->_styles);
foreach ($gantry->_styles as $style_priority => $styles) {
$order_keeper = 0;
$bump_ok = false;
foreach ($styles as $style_entry) {
if ($style_entry->getType() == 'url') {
$directory = 'REMOTE_URL';
$filename = $style_entry->getUrl();
$bump_ok = true;
} else {
$directory = dirname($style_entry->getPath());
$filename = basename($style_entry->getPath());
}
$grouped_priories[$style_priority][$order_keeper][$directory][$filename] = $style_entry;
if ($bump_ok) {
$order_keeper++;
$bump_ok = false;
}
}
}
foreach ($grouped_priories as $priority => $order_kept_entries) {
foreach ($order_kept_entries as $ordered_files) {
foreach ($ordered_files as $dir => $files) {
// Process full urls
if ($dir == 'REMOTE_URL') {
foreach ($files as $file => $link) {
$gantry->document->addStyleSheet($link->getUrl());
}
continue;
} // Process
else {
if (!is_writable($dir)) {
foreach ($files as $css_file) {
$gantry->document->addStyleSheet($css_file->getUrl());
}
continue;
}
$md5sum = "";
$path = "";
jimport('joomla.filesystem.file');
//first trip through to build filename
foreach ($files as $file => $details) {
$md5sum .= md5($details->getUrl());
$detailspath = $dir . '/' . $file;
if (JFile::exists($detailspath)) {
$path = dirname($details->getUrl());
}
}
$cache_filename = "css-" . md5($md5sum) . ".php";
$cache_fullpath = $dir . '/' . $cache_filename;
//see if file is stale
if (JFile::exists($cache_fullpath)) {
$diff = (time() - filectime($cache_fullpath));
} else {
$diff = $cache_time + 1;
}
if ($diff > $cache_time) {
$outfile = GantryGZipper::_getOutHeader("css", $expires_time);
foreach ($files as $file => $details) {
$detailspath = $dir . '/' . $file;
if (JFile::exists($detailspath)) {
$css_content = JFile::read($detailspath);
if ($strip_css) {
$css_content = GantryGZipper::_stripCSSWhiteSpace($css_content);
}
$outfile .= "\n\n/*** " . $file . " ***/\n\n" . $css_content;
}
}
JFile::write($cache_fullpath, $outfile);
}
$cache_file_name = $path . "/" . $cache_filename;
$gantry->document->addStyleSheet($cache_file_name);
}
}
}
}
}
public static function processJsFiles()
{
/** @global $gantry Gantry */
global $gantry;
$path = $gantry->basePath;
$cache_time = $gantry->get("gzipper-time");
$expires_time = $gantry->get("gzipper-expirestime", 1440);
$ordered_files = array();
$output = array();
$md5sum = "";
$script_tags = $gantry->_scripts;
foreach ($script_tags as $filepath => $file) {
$md5sum .= md5($filepath);
$ordered_files[] = array(dirname($filepath), basename($filepath), $file);
}
if (!is_writable(JPATH_CACHE)) {
foreach ($gantry->_scripts as $js_file) {
$gantry->document->addScript($js_file);
}
return;
}
if (count($ordered_files) > 0) {
$cache_filename = "js-" . md5($md5sum) . ".php";
$cache_fullpath = JPATH_CACHE . '/' . $cache_filename;
//see if file is stale
if (JFile::exists($cache_fullpath)) {
$diff = (time() - filectime($cache_fullpath));
} else {
$diff = $cache_time + 1;
}
if ($diff > $cache_time) {
$outfile = GantryGZipper::_getOutHeader("js", $expires_time);
foreach ($ordered_files as $files) {
$dir = $files[0];
$filename = $files[1];
$details = $files[2];
$detailspath = $dir . '/' . $filename;
if (JFile::exists($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);
}
$jsfile = self::cleanEndLines($jsfile);
$outfile .= "\n\n/*** " . $filename . " ***/\n\n" . $jsfile;
}
}
JFile::write($cache_fullpath, $outfile);
}
$cache_file_name = $path . "/cache/" . $cache_filename;
$cache_url_name = $gantry->baseUrl . "cache/" . $cache_filename;
$gantry->document->addScript($cache_url_name);
}
}
protected static function cleanEndLines($data)
{
$file_lines = explode("\n", $data);
while (($line = array_pop($file_lines)) != null) {
$clean_line = rtrim($line);
if (strlen($clean_line) > 0) {
$end_char = substr($line, strlen($clean_line), 1);
array_push($file_lines, $line);
if ($end_char != ';') {
array_push($file_lines, ";");
}
break;
}
}
return implode($file_lines, "\n");
}
function _getOutHeader($type = "css", $expires_time = 1440)
{
if ($type == "css") {
$header = '<?php
ob_start ("ob_gzhandler");
header("Content-type: text/css; charset: UTF-8");
header("Cache-Control: must-revalidate");
$expires_time = ' . $expires_time . ';
$offset = 60 * $expires_time ;
$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");
$expires_time = ' . $expires_time . ';
$offset = 60 * $expires_time ;
$ExpStr = "Expires: " .
gmdate("D, d M Y H:i:s",
time() + $offset) . " GMT";
header($ExpStr);
?>';
}
return $header;
}
protected static function _stripCSSWhiteSpace($css_content)
{
// remove comments
$css_content = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $css_content);
// remove tabs, spaces, newlines, etc.
$css_content = str_replace(array("\r\n", "\r", "\n", "\t", ' ', ' ', ' '), '', $css_content);
return $css_content;
}
}