/**
* Optimize website by aggregating css and js
*
*/
public function process($sHtml)
{
JCH_DEBUG ? JchPlatformProfiler::mark('beforeProcess plgSystem (JCH Optimize)') : null;
loadJchOptimizeClass(array('JchOptimizeBase', 'JchOptimizeParser', 'JchOptimizeFileRetriever',
'JchOptimizeLinkBuilder', 'JchOptimizeHelper'));
JCH_DEBUG ? JchPlatformProfiler::mark('afterLoadClass plgSystem (JCH Optimize)') : null;
try
{
$oParser = new JchOptimizeParser($this->params, $sHtml, JchOptimizeFileRetriever::getInstance());
$oLinkBuilder = new JchOptimizeLinkBuilder($oParser);
$oLinkBuilder->insertJchLinks();
$sOptimizedHtml = JchOptimizeHelper::minifyHtml($oParser->getHtml(), $this->params);
}
catch (Exception $ex)
{
JchOptimizeLogger::log($ex->getMessage(), $this->params);
$sOptimizedHtml = $sHtml;
}
spl_autoload_unregister('loadJchOptimizeClass');
JCH_DEBUG ? JchPlatformProfiler::mark('afterProcess plgSystem (JCH Optimize)') : null;
return $sOptimizedHtml;
}
/**
* Minify the markeup given in the constructor
*
* @return string
*/
public function process()
{
JCH_DEBUG ? \JchPlatformProfiler::mark('beforeProcess plgSystem (JCH Optimize)') : null;
if ($this->_isXhtml === null) {
$this->_isXhtml = preg_match('#^\\s*+<!DOCTYPE[^X]++XHTML#i', $this->_html);
}
if ($this->_isHtml5 === null) {
$this->_isHtml5 = preg_match('#^\\s*+<!DOCTYPE html>#i', $this->_html);
}
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterTestHtml plgSystem (JCH Optimize)') : null;
//Replace comments (not containing IE conditional comments)
$this->_html = preg_replace('#(?>(?:<(?!!))?[^<]*+(?:<(?:script|style)\\b[^>]*+>(?><?[^<]*+)*?<\\/(?:script|style)>|<!--\\[(?>\\]?[^\\]]*+)*?\\]--!?>|' . '<!DOCTYPE[^>]++>)?)*?\\K(?:<!--(?>-?[^-\\[]*+)*?--!?>|[^<]*+\\K$)#i', '', $this->_html);
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterReplaceComments plgSystem (JCH Optimize)') : null;
//Reduce whitespace outside all elements to one space
$this->_html = preg_replace('#(?>>?[^>]*+>(?>[^>]*+\\S[^>]*+>)*?)*?\\K(?:(?<=>)\\s++(?=<)|[^<]*+$\\K)#', ' ', $this->_html);
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterReduceWs plgSystem (JCH Optimize)') : null;
//block/undisplayed elements
$b = 'address|article|aside|audio|body|blockquote|canvas|dd|div|dl' . '|fieldset|figcaption|figure|footer|form|h[1-6]|head|header|hgroup|html|noscript|ol|output|p' . '|pre|section|style|table|title|tfoot|ul|video';
//self closing block/undisplayed elements
$b2 = 'base|meta|link|hr';
//inline elements
$i = 'b|big|i|small|tt' . '|abbr|acronym|cite|code|dfn|em|kbd|strong|samp|var' . '|a|bdo|br|map|object|q|script|span|sub|sup' . '|button|label|select|textarea';
//self closing inline elements
$i2 = 'img|input';
// remove ws around block elements preserving space around inline elements
$this->_html = preg_replace("#(?>\\s*+(?:<(?:(?>{$i})\\b[^>]*+>|(?:/(?>{$i})\\b>|(?>{$i2})\\b[^>]*+>)\\s*+)|<[^>]*+>)|[^<]++)*?\\K" . "(?:\\s++(?=<(?>{$b}|{$b2})\\b)|(?:</(?>{$b})\\b>|<(?>{$b2})\\b[^>]*+>)\\K\\s++(?!<(?>{$i}|{$i2})\\b)|\$)#i", '', $this->_html);
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterRemoveWsAroundBlocks plgSystem (JCH Optimize)') : null;
//Minify scripts
$this->_html = preg_replace_callback('#(?><?[^<]*+)*?\\K(?:(<(script|style)\\b[^>]*+>)((?>(?:<(?!/\\g{2}))?[^<]++)+?)(<\\/\\g{2}>)|$)#i', array($this, '_minifyCB'), $this->_html);
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterMinifyScripts plgSystem (JCH Optimize)') : null;
//elements to escape
$e = 'pre|script|style|textarea';
//Regex for escape elements
$p = "<pre\\b[^>]*+>(?><?[^<]*+)*?</pre>";
$sc = "<script\\b[^>]*+>(?><?[^<]*+)*?</script>";
$st = "<style\\b[^>]*+>(?><?[^<]*+)*?</style>";
$t = "<textarea\\b[^>]*+>(?><?[^<]*+)*?</textarea>";
//Replace runs of whitespace inside elements with single space escaping pre, textarea, scripts and style elements
$this->_html = preg_replace("#(?>[^<]*+(?:{$p}|{$sc}|{$st}|{$t}|<[^>]++>[^<]*+))*?(?:(?:<(?!{$e})[^>]*+>)?(?>\\s?[^\\s<]*+)*?\\K\\s{2,}|\\K\$)#i", ' ', $this->_html);
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterReplaceRunsOfWs plgSystem (JCH Optimize)') : null;
//Remove additional ws around attributes
$this->_html = preg_replace('#(?><?[^<]*+)*?(?:<[a-z0-9]++\\K\\s++|\\G[^\\>=]++=(?(?=\\s*+["\'])\\s*+["\'][^"\']*+["\']|[^\\s]++)\\K\\s++|$\\K)#i', ' ', $this->_html);
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterRemoveWsAroundAttributes plgSystem (JCH Optimize)') : null;
if ($this->_isHtml5) {
$ns1 = '"[^"\'`=<>\\s]*+(?:[\'`=<>\\s]|(?<=\\\\)")(?>(?:(?<=\\\\)")?[^"]*+)*?(?<!\\\\)"';
$ns2 = "'[^'\"`=<>\\s]*+(?:[\"`=<>\\s]|(?<=\\\\)')(?>(?:(?<=\\\\)')?[^']*+)*?(?<!\\\\)'";
//Remove quotes from selected attributes
$this->_html = preg_replace("#(?:(?=[^>]*+>)|<[a-z0-9]++ )" . "(?>[=]?[^=>]*+(?:=(?:{$ns1}|{$ns2})|>(?><?[^<]*+)*?(?:<[a-z0-9]++ |\$))?)*?" . "(?:=\\K([\"'])([^\"'`=<>\\s]++)\\g{1}[ ]?|\\K\$)#i", '$2 ', $this->_html);
}
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterRemoveQuotes plgSystem (JCH Optimize)') : null;
//remove redundant attributes
$this->_html = preg_replace('#(?><?[^<]*+)*?<(?:(?:script|style|link)|/html>)(?>[ ]?[^ >]*+)*?\\K(?: type=["\']?text/(?:javascript|css)|[^<]*+\\K$)#i', '', $this->_html);
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterRemoveAttributes plgSystem (JCH Optimize)') : null;
//Remove last whitespace in open tag
$this->_html = preg_replace('#(?><?[^<]*+)*?(?:<[a-z0-9]++(?>\\s*+[^\\s>]++)*?\\K(?:\\s++(?=>)|(?<=["\'])\\s++(?=/>))|$\\K)#i', '', $this->_html);
// JCH_DEBUG ? \JchPlatformProfiler::mark('afterRemoveLastWs plgSystem (JCH Optimize)') : null;
return trim($this->_html);
}
/**
*
* @param type $sHtml
*/
public static function attachProfiler(&$sHtml)
{
if (!is_super_admin()) {
return;
}
$items = JchPlatformProfiler::mark(TRUE);
$node = self::getAdminBarNodeBegin() . $items . self::getAdminBarNodeEnd();
$script = '<script type="application/javascript">' . 'var ul = document.getElementById("wp-admin-bar-root-default");' . 'ul.insertAdjacentHTML(\'beforeend\', \'' . $node . '\');' . '</script>';
$sHtml = str_replace('</body>', $script . '</body>', $sHtml);
}
/**
* Grabs background images with no-repeat attribute from css and merge them in one file called a sprite.
* Css is updated with sprite url and correct background positions for affected images.
* Sprite saved in {Joomla! base}/images/jch-optimize/
*
* @param string $sCss Aggregated css file before sprite generation
* @return string Css updated with sprite information on success. Original css on failure
*/
public function getSprite($sCss)
{
JCH_DEBUG ? JchPlatformProfiler::mark('beforeGetSprite plgSystem (JCH Optimize)') : null;
$sImageLibrary = $this->getImageLibrary();
$aMatches = $this->processCssUrls($sCss);
if (empty($aMatches) || $sImageLibrary === FALSE) {
return $sCss;
}
$this->params->set('sprite-path', JchPlatformPaths::spriteDir());
$aSearch = $this->generateSprite($aMatches, new CssSpriteGen($sImageLibrary, $this->params));
JCH_DEBUG ? JchPlatformProfiler::mark('afterGetSprite plgSystem (JCH Optimize)') : null;
return $aSearch;
}
public function getOriginalHtml()
{
JCH_DEBUG ? JchPlatformProfiler::mark('beforeGetHtml') : null;
$url = home_url() . '/?jchbackend=1';
try {
$oFileRetriever = JchOptimizeFileRetriever::getInstance();
$response = $oFileRetriever->getFileContents($url);
if ($oFileRetriever->response_code != 200) {
throw new Exception(JchPlatformUtility::translate('Failed fetching front end HTML with response code ' . $oFileRetriever->response_code));
}
JCH_DEBUG ? JchPlatformProfiler::mark('afterGetHtml') : null;
return $response;
} catch (Exception $e) {
JchOptimizeLogger::log($url . ': ' . $e->getMessage(), $this->params);
JCH_DEBUG ? JchPlatformProfiler::mark('afterGetHtml)') : null;
throw new RunTimeException(_('Load or refresh the front-end site first then refresh this page ' . 'to populate the multi select exclude lists.'));
}
}
/**
*
* @param type $oObj
* @param type $sCss
* @return type
*/
public function generateAdminLinks($oObj, $sCss)
{
JCH_DEBUG ? JchPlatformProfiler::mark('beforeGenerateAdminLinks plgSystem (JCH Optimize)') : null;
$params = clone $this->params;
$params->set('javascript', '1');
$params->set('css', '1');
$params->set('excludeAllExtensions', '0');
$params->set('css_minify', '0');
$params->set('debug', '0');
$params->set('bottom_js', '2');
$sHtml = $oObj->getOriginalHtml();
$oParser = new JchOptimizeParser($params, $sHtml, JchOptimizeFileRetriever::getInstance());
$aLinks = $oParser->getReplacedFiles();
if ($sCss == '') {
$oCombiner = new JchOptimizeCombiner($params, $this->bBackend);
$oCssParser = new JchOptimizeCssParser($params, $this->bBackend);
$oCombiner->combineFiles($aLinks['css'][0], 'css', $oCssParser);
$sCss = $oCombiner->css;
}
$oSpriteGenerator = new JchOptimizeSpriteGenerator($params);
$aLinks['images'] = $oSpriteGenerator->processCssUrls($sCss, TRUE);
JCH_DEBUG ? JchPlatformProfiler::mark('afterGenerateAdminLinks plgSystem (JCH Optimize)') : null;
return $aLinks;
}
/**
* If parameter is set will minify HTML before sending to browser;
* Inline CSS and JS will also be minified if respective parameters are set
*
* @return string Optimized HTML
* @throws Exception
*/
public static function minifyHtml($sHtml, $oParams)
{
JCH_DEBUG ? JchPlatformProfiler::mark('beforeMinifyHtml plgSystem (JCH Optimize)') : null;
$aOptions = array();
if ($oParams->get('css_minify', 0)) {
$aOptions['cssMinifier'] = array('JchOptimize\\CSS_Optimize', 'process');
}
if ($oParams->get('js_minify', 0)) {
$aOptions['jsMinifier'] = array('JchOptimize\\JS_Optimize', 'minify');
}
$aOptions['minify_level'] = $oParams->get('html_minify_level', 2);
if ($oParams->get('html_minify', 0)) {
$sHtmlMin = HTML_Optimize::minify($sHtml, $aOptions);
if ($sHtmlMin == '') {
JchOptimizeLogger::log(JchPlatformUtility::translate('Error while minifying HTML'), $oParams);
$sHtmlMin = $sHtml;
}
$sHtml = $sHtmlMin;
}
JCH_DEBUG ? JchPlatformProfiler::mark('afterMinifyHtml plgSystem (JCH Optimize)') : null;
return $sHtml;
}
/**
*
* @param type $sContent
* @param type $sUrl
*/
protected function minifyContent($sContent, $sType, $aUrl)
{
if ($this->params->get($sType . '_minify', 0) && preg_match('#\\s++#', trim($sContent))) {
$sUrl = isset($aUrl['url']) ? $aUrl['url'] : ($sType == 'css' ? 'Style' : 'Script') . ' Declaration';
JCH_DEBUG ? JchPlatformProfiler::mark('beforeMinifyContent - "' . $sUrl . '" plgSystem (JCH Optimize)') : null;
$sMinifiedContent = trim($sType == 'css' ? CSS_Optimize::process($sContent) : JS_Optimize::minify($sContent));
if (is_null($sMinifiedContent) || $sMinifiedContent == '') {
JchOptimizeLogger::log(sprintf(JchPlatformUtility::translate('Error occurred trying to minify: %s'), $aUrl['url']), $this->params);
$sMinifiedContent = $sContent;
}
JCH_DEBUG ? JchPlatformProfiler::mark('afterMinifyContent - "' . $sUrl . '" plgSystem (JCH Optimize)') : null;
return $sMinifiedContent;
}
return $sContent;
}
/**
* Create and cache aggregated file if it doesn't exists, file will have
* lifetime set in global configurations.
*
* @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)
{
JCH_DEBUG ? JchPlatformProfiler::mark('beforeLoadCache plgSystem (JCH Optimize)') : null;
$iLifeTime = (int) $this->params->get('lifetime', '30') * 24 * 60 * 60;
$bCached = JchPlatformCache::getCallbackCache($sId, $iLifeTime, $aFunction, $aArgs);
JCH_DEBUG ? JchPlatformProfiler::mark('afterLoadCache plgSystem (JCH Optimize)') : null;
return $bCached;
}
/**
*
* @param type $sRegex
* @param type $sType
* @param type $sSection
* @param type $aCBArgs
* @throws Exception
*/
protected function searchArea($sRegex, $sSection, $aCBArgs)
{
JCH_DEBUG ? JchPlatformProfiler::mark('beforeSearchArea - ' . $sSection . ' plgSystem (JCH Optimize)') : null;
$obj = $this;
$sProcessedHtml = preg_replace_callback($sRegex, function ($aMatches) use($obj, $aCBArgs) {
return $obj->replaceScripts($aMatches, $aCBArgs);
}, $this->{'s' . ucfirst($sSection) . 'Html'});
if (is_null($sProcessedHtml)) {
throw new Exception(sprintf(JchPlatformUtility::translate('Error while parsing for links in %1$s'), $sSection));
}
$this->{'s' . ucfirst($sSection) . 'Html'} = $sProcessedHtml;
JCH_DEBUG ? JchPlatformProfiler::mark('afterSearchArea - ' . $sSection . ' plgSystem (JCH Optimize)') : null;
}
