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Your IP : 216.73.216.152
<?php
/**
* 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/>.
*/
defined('_JCH_EXEC') or die('Restricted access');
class JchOptimizeLinkBuilderBase
{
/**
*
* @return string
*/
protected function getAsyncAttribute()
{
return '';
}
/**
*
* @param type $sUrl
*/
protected function loadCssAsync($sUrl)
{
}
}
/**
*
*
*/
class JchOptimizeLinkBuilder extends JchOptimizelinkBuilderBase
{
/** @var JchOptimizeParser Object Parser object */
public $oParser;
/** @var string Document line end */
protected $sLnEnd;
/** @var string Document tab */
protected $sTab;
/** @var string cache id * */
protected $params;
/**
* Constructor
*
* @param JchOptimizeParser Object $oParser
*/
public function __construct($oParser = null)
{
$this->oParser = $oParser;
$this->params = $this->oParser->params;
$this->sLnEnd = $this->oParser->sLnEnd;
$this->sTab = $this->oParser->sTab;
}
/**
* Prepare links for the combined files and insert them in the processed HTML
*
*/
public function insertJchLinks()
{
$aLinks = $this->oParser->getReplacedFiles();
if (!JchOptimizeHelper::isMsieLT10() && $this->params->get('combine_files_enable', '1') && !$this->oParser->bAmpPage)
{
if ($this->params->get('htaccess', 2) == 2)
{
JchOptimizeHelper::checkModRewriteEnabled($this->params);
}
$replace_css_links = FALSE;
if ($this->params->get('css', 1) && !empty($aLinks['css']))
{
$sCssCacheId = $this->getCacheId($aLinks['css']);
$sCssCache = $this->getCombinedFiles($aLinks['css'], $sCssCacheId, 'css');
if ($this->params->get('pro_optimizeCssDelivery_enable', '0'))
{
$sCriticalCss = '<style type="text/css">' . $this->sLnEnd .
$this->getCriticalCss($sCssCacheId) . $this->sLnEnd .
'</style>' . $this->sLnEnd .
'</head>';
$sHeadHtml = preg_replace(
'#</head>#i', JchOptimizeHelper::cleanReplacement($sCriticalCss), $this->oParser->getHeadHtml(), 1
);
$this->oParser->setSearchArea($sHeadHtml, 'head');
$sUrl = $this->buildUrl($sCssCacheId, 'css');
$sUrl = str_replace('JCHI', '0', $sUrl);
$this->loadCssAsync($sUrl);
}
else
{
$replace_css_links = TRUE;
}
}
if ($this->params->get('javascript', 1) && !empty($aLinks['js']))
{
$sJsCacheId = $this->getCacheId($aLinks['js']);
$this->getCombinedFiles($aLinks['js'], $sJsCacheId, 'js');
$this->replaceLinks($sJsCacheId, 'js');
}
if ($replace_css_links)
{
$this->replaceLinks($sCssCacheId, 'css');
}
}
if (!empty($aLinks['img']))
{
$this->addImgAttributes($aLinks['img']);
}
$this->runCronTasks();
}
/**
*
*
*/
protected function getCriticalCss($sCssId)
{
$sId = md5($this->oParser->getHtmlHash());
return $this->loadCache(array($this, 'processCriticalCss'), array($sCssId), $sId);
}
/**
*
*
*/
public function processCriticalCss($sCssId)
{
$oParser = $this->oParser;
$oParser->params->set('pro_InlineScripts', '1');
$oParser->params->set('pro_InlineStyles', '1');
$sHtml = $oParser->cleanHtml();
$oCssParser = new JchOptimizeCssParser($this->params, false);
$aGet = array(
'f' => $sCssId,
'i' => 0,
'type' => 'css'
);
$sCss = JchOptimizeOutput::getCombinedFile($aGet, false);
$aCssContents = $oCssParser->optimizeCssDelivery($sCss, $sHtml);
$sCriticalCss = $oCssParser->sortImports($aCssContents['criticalcss']);
return $sCriticalCss;
}
/**
*
* @return type
*/
protected function getNewJsLink()
{
$sLink = $this->params->get('bottom_js', '0') == '2' ? '</title>' . $this->sLnEnd . $this->sTab : '';
$sLink .= '<script type="application/javascript" src="URL"';
$sLink .= $this->params->get('defer_js', 0) ?
($this->isXhtml() ? ' defer="defer"' : ' defer' ) :
'';
$sLink .= $this->getAsyncAttribute();
$sLink .= '></script>';
$sNewJsLink = ($this->params->get('bottom_js') == '1') ? $this->sTab . $sLink . $this->sLnEnd . '</body>' : $sLink;
return $sNewJsLink;
}
/**
*
* @return string
*/
protected function getNewCssLink()
{
$sNewCssLink = $this->params->get('bottom_js', '0') ? '</title>' . $this->sLnEnd . $this->sTab : '';
$sNewCssLink .= '<link rel="stylesheet" type="text/css" ';
$sNewCssLink .= 'href="URL"/>';
return $sNewCssLink;
}
/**
* Use generated id to cache aggregated file
*
* @param string $sType css or js
* @param string $sLink Url for aggregated file
*/
protected function getCombinedFiles($aLinks, $sId, $sType)
{
JCH_DEBUG ? JchPlatformProfiler::start('GetCombinedFiles - ' . $sType) : null;
$aArgs = array($aLinks, $sType);
$oCombiner = new JchOptimizeCombiner($this->params, $this->oParser);
$aFunction = array(&$oCombiner, 'getContents');
$bCached = $this->loadCache($aFunction, $aArgs, $sId);
JCH_DEBUG ? JchPlatformProfiler::stop('GetCombinedFiles - ' . $sType, TRUE) : null;
return $bCached;
}
/**
*
* @param type $aImgs
*/
protected function addImgAttributes($aImgs)
{
JCH_DEBUG ? JchPlatformProfiler::start('AddImgAttributes') : null;
$sHtml = $this->oParser->getBodyHtml();
$sId = md5(serialize($aImgs));
try
{
$aImgAttributes = $this->loadCache(array($this, 'getCachedImgAttributes'), array($aImgs), $sId);
}
catch(Exception $e)
{
return;
}
$this->oParser->setSearchArea(str_replace($aImgs[0], $aImgAttributes, $sHtml), 'body');
JCH_DEBUG ? JchPlatformProfiler::stop('AddImgAttributes', true) : null;
}
/**
*
* @param type $aImgs
*/
public function getCachedImgAttributes($aImgs)
{
$aImgAttributes = array();
$total = count($aImgs[0]);
for ($i = 0; $i < $total; $i++)
{
$sUrl = !empty($aImgs[1][$i]) ? $aImgs[1][$i] : (!empty($aImgs[2][$i]) ? $aImgs[2][$i] : $aImgs[3][$i]);
if (JchOptimizeUrl::isInvalid($sUrl)
|| !$this->oParser->isHttpAdapterAvailable($sUrl)
|| JchOptimizeUrl::isSSL($sUrl) && !extension_loaded('openssl')
|| !JchOptimizeUrl::isHttpScheme($sUrl))
{
$aImgAttributes[] = $aImgs[0][$i];
continue;
}
$sPath = JchOptimizeHelper::getFilePath($sUrl);
if (file_exists($sPath))
{
$aSize = getimagesize($sPath);
if ($aSize === false || empty($aSize) || ($aSize[0] == '1' && $aSize[1] == '1'))
{
$aImgAttributes[] = $aImgs[0][$i];
continue;
}
$sImg = preg_replace('#(?:width|height)\s*+=(?:\s*+"([^">]*+)"|\s*+\'([^\'>]*+)\'|([^\s>]++))#i', '',
$aImgs[0][$i]);
$aImgAttributes[] = preg_replace('#\s*+/?>#', ' ' . $aSize[3] . ' />', $sImg);
}
else
{
$aImgAttributes[] = $aImgs[0][$i];
continue;
}
}
return $aImgAttributes;
}
/**
*
*/
protected function runCronTasks()
{
JCH_DEBUG ? JchPlatformProfiler::start('RunCronTasks') : null;
$sId = md5($this->oParser->sFileHash . 'CRONTASKS');
$aArgs = array($this->oParser);
$oCron = new JchOptimizeCron($this->params);
$aFunction = array(&$oCron, 'runCronTasks');
try
{
$bCached = $this->loadCache($aFunction, $aArgs, $sId);
}
catch(Exception $e)
{
}
JCH_DEBUG ? JchPlatformProfiler::stop('RunCronTasks', TRUE) : null;
}
/**
*
* @param type $aUrlArrays
* @return type
*/
private function getCacheId($aUrlArrays)
{
$id = md5(serialize($aUrlArrays));
return $id;
}
/**
* Returns url of aggregated file
*
* @param string $sFile Aggregated file name
* @param string $sType css or js
* @param mixed $bGz True (or 1) if gzip set and enabled
* @param number $sTime Expire header time
* @return string Url of aggregated file
*/
protected function buildUrl($sId, $sType)
{
$bGz = $this->isGZ();
$htaccess = $this->params->get('htaccess', 0);
if ($htaccess == 1 || $htaccess == 3)
{
$sPath = $this->cookieLessDomain($sType);
$sPath = $htaccess == 3 ? $sPath . '3' : $sPath;
$sUrl = $sPath . JchPlatformPaths::rewriteBase()
. ($bGz ? 'gz' : 'nz') . '/JCHI/' . $sId . '.' . $sType;
}
else
{
$oUri = clone JchPlatformUri::getInstance(JchPlatformPaths::assetPath());
$oUri->setPath($oUri->getPath() . '2/jscss.php');
$aVar = array();
$aVar['f'] = $sId;
$aVar['type'] = $sType;
$aVar['gz'] = $bGz ? 'gz' : 'nz';
$aVar['i'] = 'JCHI';
$oUri->setQuery($aVar);
$sUrl = htmlentities($oUri->toString());
}
return ($sUrl);
}
/**
*
* @return type
*/
protected function cookieLessDomain($sType)
{
$pro_staticfiles = $this->params->get('pro_staticfiles', array('css', 'js', 'jpe?g', 'gif', 'png', 'ico', 'bmp', 'pdf'));
if ($this->params->get('pro_cookielessdomain_enable', '0') && in_array($sType, $pro_staticfiles))
{
return JchOptimizeHelper::cookieLessDomain($this->params, JchPlatformPaths::assetPath(TRUE));
}
return JchPlatformPaths::assetPath();
}
/**
* Insert url of aggregated file in html
*
* @param string $sNewLink Url of aggregated file
*/
protected function replaceLinks($sId, $sType)
{
JCH_DEBUG ? JchPlatformProfiler::start('ReplaceLinks - ' . $sType) : null;
$sSearchArea = $this->oParser->getHeadHtml();
$sSearchArea .= $this->oParser->getBodyHtml();
$sLink = $this->{'getNew' . ucfirst($sType) . 'Link'}();
$sUrl = $this->buildUrl($sId, $sType);
$sNewLink = str_replace('URL', $sUrl, $sLink);
if ($sType == 'js' && $this->params->get('bottom_js', '0') == '1')
{
$sNewLink = str_replace('JCHI', '0', $sNewLink);
$sSearchArea = preg_replace('#</body>#i', $sNewLink, $sSearchArea, 1);
$this->oParser->sHtml = preg_replace('#</body>#i', $sNewLink, $this->oParser->sHtml, 1);
}
elseif ($this->params->get('bottom_js', '0'))
{
$sNewLink = str_replace('JCHI', '0', $sNewLink);
$sSearchArea = preg_replace('#</title>#i', $sNewLink, $sSearchArea, 1);
}
else
{
$sSearchArea = preg_replace_callback('#<JCH_' . strtoupper($sType) . '([^>]++)>#',
function($aM) use ($sNewLink)
{
return str_replace('JCHI', $aM[1], $sNewLink);
}, $sSearchArea);
}
$this->oParser->setSearchArea(preg_replace($this->oParser->getBodyRegex(), '', $sSearchArea, 1), 'head');
$this->oParser->setSearchArea(preg_replace($this->oParser->getHeadRegex(), '', $sSearchArea, 1), 'body');
JCH_DEBUG ? JchPlatformProfiler::stop('ReplaceLinks - ' . $sType, TRUE) : null;
}
/**
* Create and cache aggregated file if it doesn't exists.
*
* @param array $aFunction Name of function used to aggregate files
* @param array $aArgs Arguments used by function above
* @param string $sId Generated id to identify cached file
* @return boolean True on success
*/
public function loadCache($aFunction, $aArgs, $sId)
{
$bCached = JchPlatformCache::getCallbackCache($sId, $aFunction, $aArgs);
if ($bCached === FALSE)
{
throw new Exception('Error creating cache file');
}
return $bCached;
}
/**
* Check if gzip is set or enabled
*
* @return boolean True if gzip parameter set and server is enabled
*/
public function isGZ()
{
return ($this->params->get('gzip', 0) && extension_loaded('zlib') && !ini_get('zlib.output_compression')
&& (ini_get('output_handler') != 'ob_gzhandler'));
}
/**
* Determine if document is of XHTML doctype
*
* @return boolean
*/
public function isXhtml()
{
return (bool) preg_match('#^\s*+(?:<!DOCTYPE(?=[^>]+XHTML)|<\?xml.*?\?>)#i', trim($this->oParser->sHtml));
}
/**
*
* @param type $sScript
* @return type
*/
protected function cleanScript($sScript)
{
if (!$this->isXhtml())
{
$sScript = str_replace(array('<script type="text/javascript"><![CDATA[', ']]></script>'),
array('<script type="text/javascript">', '</script>'), $sScript);
}
return $sScript;
}
##<procode>##
/**
*
* @param type $sUrl
*/
protected function loadCssAsync($sUrl)
{
$sScript = '<script type="text/javascript">/*<![CDATA[*/
var cb = function() {
var l = document.createElement(\'link\'); l.rel = \'stylesheet\';
l.href = \'' . html_entity_decode($sUrl) . '\';
var h = document.getElementsByTagName(\'head\')[0]; h.appendChild(l);
};
';
if ($this->params->get('pro_optimizeCssDelivery_loadFile', '1'))
{
$sScript .= 'var raf = requestAnimationFrame || mozRequestAnimationFrame ||
webkitRequestAnimationFrame || msRequestAnimationFrame;
if (raf) raf(cb);
else ';
}
$sScript .= 'window.addEventListener(\'load\', cb);
/*]]>*/</script>
<noscript><link type="text/css" rel="stylesheet" property="stylesheet" href="' . $sUrl . '" /></noscript>'
. $this->sLnEnd . $this->sTab . '</body>';
$sScript = $this->cleanScript($sScript);
$sBodyHtml = $this->oParser->getBodyHtml();
$sBodyHtml = str_replace('</body>', $sScript, $sBodyHtml);
$this->oParser->sHtml = str_replace('</body>', $sScript, $this->oParser->sHtml);
$this->oParser->setSearchArea($sBodyHtml, 'body');
}
/**
* Adds the async attribute to the aggregated js file link
*
* @return string
*/
protected function getAsyncAttribute()
{
if ($this->params->get('pro_loadAsynchronous', '0'))
{
$sAsyncAttribute = $this->isXhtml() ? ' async="async"' : ' async';
return $sAsyncAttribute;
}
else
{
return parent::getAsyncAttribute();
}
}
##</procode>##
}