Your IP : 216.73.216.11
<?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 to parse HTML and find css and js links to replace, populating an array with matches
* and removing found links from HTML
*
*/
class JchOptimizeParser extends JchOptimizeBase
{
/** @var string Html of page */
public $sHtml = '';
/** @var array Array of css or js urls taken from head */
protected $aLinks = array();
protected $aUrls = array();
public $params = null;
public $sLnEnd = '';
public $sTab = '';
public $sFileHash = '';
private $bPreserveOrder;
protected $oFileRetriever;
/**
* Constructor
*
* @param JRegistry object $params Plugin parameters
* @param string $sHtml Page HMTL
*/
public function __construct($oParams, $sHtml, $oFileRetriever)
{
$this->params = $oParams;
$this->sHtml = $sHtml;
$this->oFileRetriever = $oFileRetriever;
$this->sLnEnd = JchPlatformUtility::lnEnd();
$this->sTab = JchPlatformUtility::tab();
if (!defined('JCH_TEST_MODE'))
{
$oUri = JchPlatformUri::getInstance();
$this->sFileHash = serialize($this->params->getOptions()) . JCH_VERSION . $oUri->getHost();
}
$this->parseHtml();
}
/**
*
* @return type
*/
public function getOriginalHtml()
{
return $this->sHtml;
}
/**
*
* @return type
*/
public function cleanHtml()
{
$hash = preg_replace(array(
$this->getHeadRegex(),
'#' . $this->ifRegex() . '#',
'#' . implode('', $this->getJsRegex()) . '#six',
'#' . implode('', $this->getCssRegex()) . '#six'
), '', $this->sHtml);
return $hash;
}
/**
*
*/
public function getHtmlHash()
{
$sHtmlHash = '';
preg_replace_callback('#<(?!/)[^>]++>#i',
function($aM) use (&$sHtmlHash)
{
$sHtmlHash .= $aM[0];
return;
}, $this->cleanHtml(), 200);
return $sHtmlHash;
}
/**
* Removes applicable js and css links from search area
*
*/
public function parseHtml()
{
JCH_DEBUG ? JchPlatformProfiler::start('SetUpExcludes') : null;
$oParams = $this->params;
$aCBArgs = array();
$this->getHeadHtml();
$this->getBodyHtml();
if (!JchOptimizeHelper::isMsieLT10() && $oParams->get('combine_files_enable', '1'))
{
loadJchOptimizeClass('JchPlatformExcludes');
$aExJsComp = $this->getExComp($oParams->get('excludeJsComponents', ''));
$aExCssComp = $this->getExComp($oParams->get('excludeCssComponents', ''));
$aExcludeJs = JchOptimizeHelper::getArray($oParams->get('excludeJs', ''));
$aExcludeCss = JchOptimizeHelper::getArray($oParams->get('excludeCss', ''));
$aExcludeScript = JchOptimizeHelper::getArray($oParams->get('pro_excludeScripts'));
$aExcludeStyle = JchOptimizeHelper::getArray($oParams->get('pro_excludeStyles'));
$aExcludeScript = array_map(function($sScript)
{
return stripslashes($sScript);
}, $aExcludeScript);
$aCBArgs['excludes']['js'] = array_merge($aExcludeJs, $aExJsComp,
array('.com/maps/api/js', '.com/jsapi', '.com/uds', 'typekit.net'),
JchPlatformExcludes::head('js'));
$aCBArgs['excludes']['css'] = array_merge($aExcludeCss, $aExCssComp, JchPlatformExcludes::head('css'));
$aCBArgs['excludes']['js_script'] = $aExcludeScript;
$aCBArgs['excludes']['css_script'] = $aExcludeStyle;
$aCBArgs['removals']['js'] = JchOptimizeHelper::getArray($oParams->get('removeJs', ''));
$aCBArgs['removals']['css'] = JchOptimizeHelper::getArray($oParams->get('removeCss', ''));
JCH_DEBUG ? JchPlatformProfiler::stop('SetUpExcludes', TRUE) : null;
$this->initSearch($aCBArgs);
}
$this->getImagesWithoutAttributes();
}
/**
*
* @param type $sType
*/
protected function initSearch($aCBArgs)
{
JCH_DEBUG ? JchPlatformProfiler::start('InitSearch') : null;
$aJsRegex = $this->getJsRegex();
$j = implode('', $aJsRegex);
$aCssRegex = $this->getCssRegex();
$c = implode('', $aCssRegex);
$i = $this->ifRegex();
$ns = '<noscript\b[^>]*+>(?><?[^<]*+)*?</noscript>';
$sRegex = "#(?>(?:<(?!!))?[^<]*+(?:$i|$ns|<!)?)*?\K(?:$j|$c|\K$)#six";
$this->iIndex_js = -1;
$this->iIndex_css = -1;
$this->bExclude_js = TRUE;
$this->bExclude_css = TRUE;
JCH_DEBUG ? JchPlatformProfiler::stop('InitSearch', TRUE) : null;
$this->searchArea($sRegex, 'head', $aCBArgs);
}
/**
*
* @param type $sRegex
* @param type $sType
* @param type $sSection
* @param type $aCBArgs
* @throws Exception
*/
protected function searchArea($sRegex, $sSection, $aCBArgs)
{
JCH_DEBUG ? JchPlatformProfiler::start('SearchArea - ' . $sSection) : 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($sProcessedHtml))
{
throw new Exception(sprintf('Error while parsing for links in %1$s', $sSection));
}
$this->{'s' . ucfirst($sSection) . 'Html'} = $sProcessedHtml;
JCH_DEBUG ? JchPlatformProfiler::stop('SearchArea - ' . $sSection, TRUE) : null;
}
/**
*
*/
protected function getImagesWithoutAttributes()
{
if($this->params->get('img_attributes_enable', '0'))
{
JCH_DEBUG ? JchPlatformProfiler::start('GetImagesWithoutAttributes') : null;
$rx = '#(?><?[^<]*+)*?\K(?:<img\s++(?!(?=(?>[^\s>]*+\s++)*?width\s*+=\s*+["\'][^\'">a-z]++[\'"])'
. '(?=(?>[^\s>]*+\s++)*?height\s*+=\s*+["\'][^\'">a-z]++[\'"]))'
. '(?=(?>[^\s>]*+\s++)*?src\s*+=(?:\s*+"([^">]*+)"|\s*+\'([^\'>]*+)\'|([^\s>]++)))[^>]*+>|$)#i';
preg_match_all($rx, $this->getBodyHtml(), $m, PREG_PATTERN_ORDER);
$this->aLinks['img'] = array_map(function($a){return array_slice($a, 0, -1);}, $m);
JCH_DEBUG ? JchPlatformProfiler::stop('GetImagesWithoutAttributes', true) : null;
}
}
/**
* Callback function used to remove urls of css and js files in head tags
*
* @param array $aMatches Array of all matches
* @return string Returns the url if excluded, empty string otherwise
*/
public function replaceScripts($aMatches, $aCBArgs)
{
$sUrl = $aMatches['url'] = isset($aMatches[1]) && $aMatches[1] != '' ? $aMatches[1] : (isset($aMatches[3]) ? $aMatches[3] : '');
$sDeclaration = isset($aMatches[2]) && $aMatches[2] != '' ? $aMatches[2] : (isset($aMatches[4]) ? $aMatches[4] : '');
if (preg_match('#^<!--#', $aMatches[0])
|| ((trim($sUrl) == '' || trim($sUrl) == '/') && trim($sDeclaration) == ''))
{
return $aMatches[0];
}
$sType = preg_match('#^<script#i', $aMatches[0]) ? 'js' : 'css';
if ($sType == 'js' && !$this->params->get('javascript', '1'))
{
return $aMatches[0];
}
if ($sType == 'css' && !$this->params->get('css', '1'))
{
return $aMatches[0];
}
$this->bPreserveOrder = (bool) !(($sType == 'css' && $this->params->get('pro_optimizeCssDelivery_enable', '0'))
|| ($this->params->get('bottom_js', '0'))
|| ($sType == 'js' && $this->params->get('bottom_js', '0') == '1'));
$aExcludes = array();
if (isset($aCBArgs['excludes']))
{
$aExcludes = $aCBArgs['excludes'];
}
$aRemovals = array();
if (isset($aCBArgs['removals']))
{
$aRemovals = $aCBArgs['removals'];
}
$sMedia = '';
if (($sType == 'css') && (preg_match('#media=(?(?=["\'])(?:["\']([^"\']+))|(\w+))#i', $aMatches[0], $aMediaTypes) > 0))
{
$sMedia .= $aMediaTypes[1] ? $aMediaTypes[1] : $aMediaTypes[2];
}
switch (TRUE)
{
case (($sUrl != '') && !empty($aExcludes[$sType]) && JchOptimizeHelper::findExcludes($aExcludes[$sType], $sUrl)):
case (($sUrl != '') && !$this->isHttpAdapterAvailable($sUrl)):
case ($sUrl != '' && preg_match('#^https#', $sUrl) && !extension_loaded('openssl')):
case ($sUrl != '' && preg_match('#^data:#', $sUrl)):
case ($sDeclaration != '' && $this->excludeDeclaration($sType)):
case ($sDeclaration != '' && JchOptimizeHelper::findExcludes($aExcludes[$sType . '_script'], $sDeclaration, $sType)):
case (($sUrl != '') && $this->excludeExternalExtensions($sUrl)):
$this->{'bExclude_' . $sType} = TRUE;
return $aMatches[0];
case (($sUrl != '') && $this->isDuplicated($sUrl)):
case (($sUrl != '') && !empty($aRemovals[$sType]) && JchOptimizeHelper::findExcludes($aRemovals[$sType], $sUrl)):
return '';
default:
$return = '';
if ($this->{'bExclude_' . $sType} && $this->bPreserveOrder)
{
$this->{'bExclude_' . $sType} = FALSE;
$iIndex = ++$this->{'iIndex_' . $sType};
$return = '<JCH_' . strtoupper($sType) . $iIndex . '>';
}
elseif (!$this->bPreserveOrder)
{
$iIndex = 0;
}
else
{
$iIndex = $this->{'iIndex_' . $sType};
}
$array = array();
$array['match'] = $aMatches[0];
if ($sUrl == '' && trim($sDeclaration) != '')
{
$content = JchOptimize\HTML_Optimize::cleanScript($sDeclaration, $sType);
$array['content'] = $content;
}
else
{
$array['url'] = $sUrl;
}
if ($this->sFileHash != '')
{
$array['id'] = $this->getFileID($aMatches);
}
if ($sType == 'css')
{
$array['media'] = $sMedia;
}
$this->aLinks[$sType][$iIndex][] = $array;
return $return;
}
}
/**
*
* @param type $sUrl
* @return type
*/
protected function getFileID($aMatches)
{
$id = $aMatches[0];
$containsgf = JchOptimizeHelper::getArray($this->params->get('hidden_containsgf', ''));
if (!empty($aMatches['url']))
{
if (strpos($aMatches['url'], 'fonts.googleapis.com') !== FALSE
|| in_array($aMatches['url'], $containsgf))
{
$browser = JchOptimizeBrowser::getInstance();
$id .= $browser->getFontHash();
}
}
return md5($this->sFileHash . $id);
}
/**
*
* @param type $sUrl
*/
public function isDuplicated($sUrl)
{
$sUrl = preg_replace('#https?:#i', '', $sUrl);
$return = in_array($sUrl, $this->aUrls);
if (!$return)
{
$this->aUrls[] = $sUrl;
}
return $return;
}
/**
*
* @param type $sPath
*/
protected function excludeExternalExtensions($sPath)
{
if (!$this->params->get('includeAllExtensions', '0'))
{
return !JchOptimizeHelper::isInternal($sPath) || preg_match('#' . JchPlatformExcludes::extensions() . '#i', $sPath);
}
return FALSE;
}
/**
* Generates regex for excluding components set in plugin params
*
* @param string $param
* @return string
*/
protected function getExComp($sExComParam)
{
$aComponents = JchOptimizeHelper::getArray($sExComParam);
$aExComp = array();
if (!empty($aComponents))
{
$aExComp = array_map(function($sValue)
{
return $sValue . '/';
}, $aComponents);
}
return $aExComp;
}
/**
* Fetches Class property containing array of matches of urls to be removed from HTML
*
* @return array
*/
public function getReplacedFiles()
{
return $this->aLinks;
}
/**
* Set the Searcharea property
*
* @param type $sSearchArea
*/
public function setSearchArea($sSearchArea, $sSection)
{
$this->{'s' . ucfirst($sSection) . 'Html'} = $sSearchArea;
}
/**
* Determines if document is of html5 doctype
*
* @return boolean
*/
public function isHtml5()
{
return (bool) preg_match('#^<!DOCTYPE html>#i', trim($this->sHtml));
}
/**
*
* @return string
*/
protected static function ifRegex()
{
return '<!--(?>-?[^-]*+)*?-->';
}
/**
*
* @param type $aAttrs
* @param type $aExts
* @param type $bFileOptional
*/
protected static function urlRegex($aAttrs, $aExts)
{
$sAttrs = implode('|', $aAttrs);
$sExts = implode('|', $aExts);
$sUrlRegex = <<<URLREGEX
(?> [^\s>]*+\s )+? (?>$sAttrs)=["']?
( (?<!["']) [^\s>]*+ | (?<!') [^"]*+ | [^']*+ )
URLREGEX;
return $sUrlRegex;
}
/**
*
* @param type $sCriteria
* @return string
*/
protected static function criteriaRegex($sCriteria)
{
$sCriteriaRegex = '(?= (?> [^\s>]*+[\s] ' . $sCriteria . ' )*+ [^\s>]*+> )';
return $sCriteriaRegex;
}
/**
*
*/
public function getJsRegex()
{
$aRegex = array();
$aRegex[0] = '(?:<script';
$sCriteria = '(?(?= type= ) type=["\']?(?:text|application)/javascript )';
$aRegex[1] = self::criteriaRegex($sCriteria);
$aRegex[2] = '(?:' . self::urlRegex(array('src'), array('js', 'php')) . ')?';
$aRegex[3] = '[^>]*+>( (?> <?[^<]*+ )*? )</script>)';
return $aRegex;
}
/**
*
* @return string
*/
public function getCssRegex()
{
$aRegex = array();
$aRegex[0] = '(?:<link';
$sCriteria = '(?! (?: itemprop | disabled | type= (?! ["\']?text/css ) | rel= (?! ["\']?stylesheet ) ) ) ';
$aRegex[1] = self::criteriaRegex($sCriteria);
$aRegex[2] = self::urlRegex(array('href'), array('css', 'php'));
$aRegex[3] = '[^>]*+>)';
$aRegex[4] = '|(?:<style(?:(?!(?:type=(?!["\']?text/css))|(?:scoped))[^>])*>((?><?[^<]+)*?)</style>)';
return $aRegex;
}
/**
* Get the search area to be used..head section or body
*
* @param type $sHead
* @return type
*/
public function getBodyHtml()
{
if ($this->sBodyHtml == '')
{
if (preg_match($this->getBodyRegex(), $this->sHtml, $aBodyMatches) === FALSE || empty($aBodyMatches))
{
throw new Exception('Error occurred while trying to match for search area.'
. ' Check your template for open and closing body tags');
}
$this->sBodyHtml = $aBodyMatches[0];
}
return $this->sBodyHtml;
}
/**
* Returns processed html to be sent to the browser
*
* @return string
*/
public function getHtml()
{
$sHtml = parent::getHtml();
if ($this->sBodyHtml != '')
{
$sHtml = preg_replace($this->getBodyRegex(), strtr($this->sBodyHtml, array('\\' => '\\\\', '$' => '\$')), $sHtml, 1);
if (is_null($sHtml) || $sHtml == '')
{
throw new Exception('Error occured while trying to get HTML');
}
}
return $sHtml;
}
}