Your IP : 216.73.216.231
<?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 JchOptimizeCssParserBase extends JchOptimize\CSS_Optimize
{
/**
*
* @return type
*/
public static function staticFiles()
{
return array();
}
/**
*
* @return type
*/
public static function fontFiles()
{
return array();
}
/**
*
* @param type $sContents
* @param type $sHtml
* @return string
*/
public function optimizeCssDelivery($sContents, $sHtml)
{
$aContents = array(
'font-face' => '',
'criticalcss' => ''
);
return $aContents;
}
}
/**
*
*
*/
class JchOptimizeCssParser extends JchOptimizeCssParserBase
{
public $sLnEnd = '';
public $params;
protected $bBackend = FALSE;
public $e = '';
public $u = '';
/**
*
* @param type $sLnEnd
* @param type $bBackend
*/
public function __construct($params = NULL, $bBackend = false)
{
$this->sLnEnd = is_null($params) ? "\n" : JchPlatformUtility::lnEnd();
$this->params = is_null($params) ? NULL : $params;
$this->bBackend = $bBackend;
$e = self::DOUBLE_QUOTE_STRING . '|' . self::SINGLE_QUOTE_STRING . '|' . self::BLOCK_COMMENTS . '|'
. self::LINE_COMMENTS;
$this->e = "(?<!\\\\)(?:$e)|[\'\"/]";
$this->u = '(?<!\\\\)(?:' . self::URI . '|' . $e . ')|[\'\"/(]';
}
/**
*
* @param type $sContent
* @return type
*/
public function handleMediaQueries($sContent, $sParentMedia = '')
{
if ($this->bBackend)
{
return $sContent;
}
if (isset($sParentMedia) && ($sParentMedia != ''))
{
$obj = $this;
$sContent = preg_replace_callback(
"#(?>@?[^@'\"/(]*+(?:{$this->u})?)*?\K(?:@media ([^{]*+)|\K$)#i",
function($aMatches) use ($sParentMedia, $obj)
{
return $obj->_mediaFeaturesCB($aMatches, $sParentMedia);
}, $sContent
);
$a = $this->nestedAtRulesRegex();
$sContent = preg_replace(
"#(?>(?:\|\"[^|]++(?<=\")\||$a)\s*+)*\K"
. "(?>(?:$this->u|/|\(|@(?![^{};]++(?1)))?(?:[^|@'\"/(]*+|$))*+#i",
'@media ' . $sParentMedia . ' {' . $this->sLnEnd . '$0' . $this->sLnEnd . '}', trim($sContent)
);
$sContent = preg_replace("#(?>@?[^@'\"/(]*+(?:{$this->u})?)*?\K(?:@media[^{]*+{((?>\s*+|$this->e)++)}|$)#i", '$1', $sContent);
}
return $sContent;
}
/**
*
* @return string
*/
public static function nestedAtRulesRegex()
{
return '@[^{};]++({(?>[^{}]++|(?1))*+})';
}
/**
*
* @param type $aMatches
* @return type
*/
public function _mediaFeaturesCB($aMatches, $sParentMedia)
{
if (!isset($aMatches[1]) || $aMatches[1] == '' || preg_match('#^(?>\(|/(?>/|\*))#', $aMatches[0]))
{
return $aMatches[0];
}
return '@media ' . $this->combineMediaQueries($sParentMedia, trim($aMatches[1]));
}
/**
*
* @param type $sParentMediaQueries
* @param type $sChildMediaQueries
* @return type
*/
protected function combineMediaQueries($sParentMediaQueries, $sChildMediaQueries)
{
$aParentMediaQueries = preg_split('#\s++or\s++|,#i', $sParentMediaQueries);
$aChildMediaQueries = preg_split('#\s++or\s++|,#i', $sChildMediaQueries);
//$aMediaTypes = array('all', 'aural', 'braille', 'handheld', 'print', 'projection', 'screen', 'tty', 'tv', 'embossed');
$aMediaQuery = array();
foreach ($aParentMediaQueries as $sParentMediaQuery)
{
$aParentMediaQuery = $this->parseMediaQuery(trim($sParentMediaQuery));
foreach ($aChildMediaQueries as $sChildMediaQuery)
{
$sMediaQuery = '';
$aChildMediaQuery = $this->parseMediaQuery(trim($sChildMediaQuery));
if ($aParentMediaQuery['keyword'] == 'only' || $aChildMediaQuery['keyword'] == 'only')
{
$sMediaQuery .= 'only ';
}
if ($aParentMediaQuery['keyword'] == 'not' && $sChildMediaQuery['keyword'] == '')
{
if ($aParentMediaQuery['media_type'] == 'all')
{
$sMediaQuery .= '(not ' . $aParentMediaQuery['media_type'] . ')';
}
elseif ($aParentMediaQuery['media_type'] == $aChildMediaQuery['media_type'])
{
$sMediaQuery .= '(not ' . $aParentMediaQuery['media_type'] . ') and ' . $aChildMediaQuery['media_type'];
}
else
{
$sMediaQuery .= $aChildMediaQuery['media_type'];
}
}
elseif ($aParentMediaQuery['keyword'] == '' && $aChildMediaQuery['keyword'] == 'not')
{
if ($aChildMediaQuery['media_type'] == 'all')
{
$sMediaQuery .= '(not ' . $aChildMediaQuery['media_type'] . ')';
}
elseif ($aParentMediaQuery['media_type'] == $aChildMediaQuery['media_type'])
{
$sMediaQuery .= $aParentMediaQuery['media_type'] . ' and (not ' . $aChildMediaQuery['media_type'] . ')';
}
else
{
$sMediaQuery .= $aChildMediaQuery['media_type'];
}
}
elseif ($aParentMediaQuery['keyword'] == 'not' && $aChildMediaQuery['keyword'] == 'not')
{
$sMediaQuery .= 'not ' . $aChildMediaQuery['keyword'];
}
else
{
if ($aParentMediaQuery['media_type'] == $aChildMediaQuery['media_type']
|| $aParentMediaQuery['media_type'] == 'all')
{
$sMediaQuery .= $aChildMediaQuery['media_type'];
}
elseif ($aChildMediaQuery['media_type'] == 'all')
{
$sMediaQuery .= $aParentMediaQuery['media_type'];
}
else
{
$sMediaQuery .= $aParentMediaQuery['media_type'] . ' and ' . $aChildMediaQuery['media_type'];
}
}
if (isset($aParentMediaQuery['expression']))
{
$sMediaQuery .= ' and ' . $aParentMediaQuery['expression'];
}
if (isset($aChildMediaQuery['expression']))
{
$sMediaQuery .= ' and ' . $aChildMediaQuery['expression'];
}
$aMediaQuery[] = $sMediaQuery;
}
}
return implode(', ', $aMediaQuery);
}
/**
*
* @param type $sMediaQuery
* @return type
*/
protected function parseMediaQuery($sMediaQuery)
{
$aParts = array();
$sMediaQuery = preg_replace(array('#\(\s++#', '#\s++\)#'), array('(', ')'), $sMediaQuery);
preg_match('#(?:\(?(not|only)\)?)?\s*+(?:\(?(all|aural|braille|handheld|print|projection|screen|tty|tv|embossed)\)?)?(?:\s++and\s++)?(.++)?#si',
$sMediaQuery, $aMatches);
$aParts['keyword'] = isset($aMatches[1]) ? strtolower($aMatches[1]) : '';
if (isset($aMatches[2]) && $aMatches[2] != '')
{
$aParts['media_type'] = strtolower($aMatches[2]);
}
else
{
$aParts['media_type'] = 'all';
}
if (isset($aMatches[3]) && $aMatches[3] != '')
{
$aParts['expression'] = $aMatches[3];
}
return $aParts;
}
/**
*
* @param string $sContent
* @param type $sAtRulesRegex
* @param type $sUrl
* @return string
*/
public function removeAtRules($sContent, $sAtRulesRegex, $sUrl = array('url' => 'CSS'))
{
if (preg_match_all($sAtRulesRegex, $sContent, $aMatches) === FALSE)
{
//JchOptimizeLogger::log(sprintf('Error parsing for at rules in %s', $sUrl['url']), $this->params);
return $sContent;
}
$m = array_filter($aMatches[0]);
if (!empty($m))
{
$m = array_unique($m);
$sAtRules = implode($this->sLnEnd, $m);
$sContentReplaced = str_replace($m, '', $sContent);
$sContent = $sAtRules . $this->sLnEnd . $this->sLnEnd . $sContentReplaced;
}
return $sContent;
}
/**
* Converts url of background images in css files to absolute path
*
* @param string $sContent
* @return string
*/
public function correctUrl($sContent, $aUrl)
{
$obj = $this;
$sCorrectedContent = preg_replace_callback(
"#(?>[(]?[^('/\"]*+(?:{$this->e}|/)?)*?(?:(?<=url)\(\s*+\K['\"]?((?<!['\"])[^\s)]*+|(?<!')[^\"]*+|[^']*+)['\"]?|\K$)#i",
function ($aMatches) use ($aUrl, $obj)
{
return $obj->_correctUrlCB($aMatches, $aUrl);
}, $sContent);
if (is_null($sCorrectedContent))
{
throw new Exception('The plugin failed to correct the url of the background images');
}
$sContent = $sCorrectedContent;
return $sContent;
}
/**
* Callback function to correct urls in aggregated css files
*
* @param array $aMatches Array of all matches
* @return string Correct url of images from aggregated css file
*/
public function _correctUrlCB($aMatches, $aUrl)
{
if (!isset($aMatches[1]) || $aMatches[1] == '' || preg_match('#^(?:\(|/(?:/|\*))#', $aMatches[0]))
{
return $aMatches[0];
}
$sUriBase = JchPlatformUri::base(TRUE);
$sImageUrl = $aMatches[1];
$sCssFileUrl = isset($aUrl['url']) ? $aUrl['url'] : '/';
if (!preg_match('#^data:#', $sImageUrl))
{
if (!preg_match('#^/|://#', $sImageUrl))
{
$aCssUrlArray = explode('/', $sCssFileUrl);
array_pop($aCssUrlArray);
$sCssRootPath = implode('/', $aCssUrlArray) . '/';
$sImagePath = $sCssRootPath . $sImageUrl;
$oImageUri = clone JchPlatformUri::getInstance($sImagePath);
if (JchOptimizeHelper::isInternal($sCssFileUrl))
{
$sUriPath = preg_replace('#^' . preg_quote($sUriBase, '#') . '/#', '', $oImageUri->getPath());
$oImageUri->setPath($sUriBase . '/' . $sUriPath);
$sImageUrl = $oImageUri->toString();
}
else
{
$oImageUri->setPath($oImageUri->getPath());
$sImageUrl = ($oImageUri->toString(array('scheme')) ? '' : '//') . $oImageUri->toString();
}
}
if (JchOptimizeHelper::isInternal($sCssFileUrl) && JchOptimizeHelper::isInternal($sImageUrl))
{
$oImageUri = clone JchPlatformUri::getInstance($sImageUrl);
$aStaticFiles = $this->params->get('pro_staticfiles', array('css', 'js', 'jpe?g', 'gif', 'png', 'ico', 'bmp', 'pdf'));
$sStaticFiles = implode('|', $aStaticFiles);
$aFontFiles = $this->fontFiles();
$sFontFiles = implode('|', $aFontFiles);
if (preg_match('#\.(?>' . $sStaticFiles . ')#', $oImageUri->getPath()))
{
$sImageUrl = JchOptimizeHelper::cookieLessDomain($this->params, $oImageUri->toString(array('path')));
}
elseif (preg_match('#\.php#', $oImageUri->getPath()))
{
$sImageUrl = $oImageUri->toString(array('path', 'query', 'fragment'));
}
elseif ($this->params->get('pro_cookielessdomain_enable', '0') && preg_match('#\.(?>' . $sFontFiles . ')#',
$oImageUri->getPath()))
{
$oUri = clone JchPlatformUri::getInstance();
$sImageUrl = '//' . $oUri->toString(array('host', 'port')) .
$oImageUri->toString(array('path'));
}
else
{
$sImageUrl = $oImageUri->toString(array('path'));
}
}
}
$sImageUrl = preg_match('#(?<!\\\\)[\s\'"(),]#', $sImageUrl) ? '"' . $sImageUrl . '"' : $sImageUrl;
return $sImageUrl;
}
/**
* Sorts @import and @charset as according to w3C <http://www.w3.org/TR/CSS2/cascade.html> Section 6.3
*
* @param string $sCss Combined css
* @return string CSS with @import and @charset properly sorted
* @todo replace @imports with media queries
*/
public function sortImports($sCss)
{
$sCssMediaImports = preg_replace_callback("#(?>@?[^@('\"/]*+(?:{$this->u}|/|\()?)*?\K(?:@media\s([^{]++)({(?>[^{}]++|(?2))*+})|\K$)#i",
array(__CLASS__, '_sortImportsCB'), $sCss);
if (is_null($sCssMediaImports))
{
//JchOptimizeLogger::log('Failed matching for imports within media queries in css', $this->params);
return $sCss;
}
$sCss = $sCssMediaImports;
$sCss = preg_replace('#@charset[^;}]++;?#i', '', $sCss);
$sCss = $this->removeAtRules($sCss, '#(?>[/@]?[^/@]*+(?:/\*(?>\*?[^\*]*+)*?\*/)?)*?\K(?:@import[^;}]++;?|\K$)#i');
return $sCss;
}
/**
* Callback function for sort Imports
*
* @param type $aMatches
* @return string
*/
protected function _sortImportsCB($aMatches)
{
if (!isset($aMatches[1]) || $aMatches[1] == '' || preg_match('#^(?>\(|/(?>/|\*))#', $aMatches[0]))
{
return $aMatches[0];
}
$sMedia = $aMatches[1];
$sImports = preg_replace_callback('#(@import\surl\([^)]++\))([^;}]*+);?#',
function($aM) use ($sMedia)
{
if (!empty($aM[2]))
{
return $aM[1] . ' ' . $this->combineMediaQueries($sMedia, $aM[2]) . ';';
}
else
{
return $aM[1] . ' ' . $sMedia . ';';
}
}, $aMatches[2]);
$sCss = str_replace($aMatches[2], $sImports, $aMatches[0]);
return $sCss;
}
/**
*
* @param type $sCss
* @return type
*/
public function addRightBrace($sCss)
{
$sRCss = '';
preg_replace_callback("#(?>[^{}'\"/(]*+(?:{$this->u})?)+?(?:(?<b>{(?>[^{}]++|(?&b))*+})|\||)#",
function($m) use (&$sRCss){
$sRCss .= $m[0];
return;
},
rtrim($sCss) . '}}');
return $sRCss;
}
}