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libraries/joomla/document/html/renderer/head.php
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228
libraries/joomla/document/html/renderer/head.php
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<?php
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/**
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* @package Joomla.Platform
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* @subpackage Document
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE
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*/
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defined('JPATH_PLATFORM') or die;
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/**
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* JDocument head renderer
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*
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* @package Joomla.Platform
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* @subpackage Document
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* @since 11.1
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*/
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class JDocumentRendererHead extends JDocumentRenderer
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{
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/**
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* Renders the document head and returns the results as a string
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*
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* @param string $head (unused)
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* @param array $params Associative array of values
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* @param string $content The script
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*
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* @return string The output of the script
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*
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* @since 11.1
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*
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* @note Unused arguments are retained to preserve backward compatibility.
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*/
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public function render($head, $params = array(), $content = null)
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{
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ob_start();
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echo $this->fetchHead($this->_doc);
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$buffer = ob_get_contents();
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ob_end_clean();
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return $buffer;
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}
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/**
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* Generates the head HTML and return the results as a string
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*
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* @param JDocument $document The document for which the head will be created
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*
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* @return string The head hTML
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*
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* @since 11.1
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*/
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public function fetchHead($document)
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{
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// Convert the tagids to titles
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if (isset($document->_metaTags['standard']['tags']))
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{
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$tagsHelper = new JHelperTags;
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$document->_metaTags['standard']['tags'] = implode(', ', $tagsHelper->getTagNames($document->_metaTags['standard']['tags']));
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}
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// Trigger the onBeforeCompileHead event
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$app = JFactory::getApplication();
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$app->triggerEvent('onBeforeCompileHead');
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// Get line endings
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$lnEnd = $document->_getLineEnd();
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$tab = $document->_getTab();
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$tagEnd = ' />';
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$buffer = '';
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// Generate charset when using HTML5 (should happen first)
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if ($document->isHtml5())
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{
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$buffer .= $tab . '<meta charset="' . $document->getCharset() . '" />' . $lnEnd;
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}
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// Generate base tag (need to happen early)
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$base = $document->getBase();
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if (!empty($base))
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{
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$buffer .= $tab . '<base href="' . $document->getBase() . '" />' . $lnEnd;
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}
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// Generate META tags (needs to happen as early as possible in the head)
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foreach ($document->_metaTags as $type => $tag)
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{
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foreach ($tag as $name => $content)
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{
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if ($type == 'http-equiv' && !($document->isHtml5() && $name == 'content-type'))
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{
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$buffer .= $tab . '<meta http-equiv="' . $name . '" content="' . htmlspecialchars($content) . '" />' . $lnEnd;
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}
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elseif ($type == 'standard' && !empty($content))
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{
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$buffer .= $tab . '<meta name="' . $name . '" content="' . htmlspecialchars($content) . '" />' . $lnEnd;
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}
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}
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}
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// Don't add empty descriptions
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$documentDescription = $document->getDescription();
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if ($documentDescription)
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{
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$buffer .= $tab . '<meta name="description" content="' . htmlspecialchars($documentDescription) . '" />' . $lnEnd;
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}
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// Don't add empty generators
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$generator = $document->getGenerator();
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if ($generator)
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{
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$buffer .= $tab . '<meta name="generator" content="' . htmlspecialchars($generator) . '" />' . $lnEnd;
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}
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$buffer .= $tab . '<title>' . htmlspecialchars($document->getTitle(), ENT_COMPAT, 'UTF-8') . '</title>' . $lnEnd;
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// Generate link declarations
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foreach ($document->_links as $link => $linkAtrr)
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{
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$buffer .= $tab . '<link href="' . $link . '" ' . $linkAtrr['relType'] . '="' . $linkAtrr['relation'] . '"';
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if ($temp = JArrayHelper::toString($linkAtrr['attribs']))
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{
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$buffer .= ' ' . $temp;
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}
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$buffer .= ' />' . $lnEnd;
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}
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// Generate stylesheet links
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foreach ($document->_styleSheets as $strSrc => $strAttr)
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{
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$buffer .= $tab . '<link rel="stylesheet" href="' . $strSrc . '" type="' . $strAttr['mime'] . '"';
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if (!is_null($strAttr['media']))
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{
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$buffer .= ' media="' . $strAttr['media'] . '" ';
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}
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if ($temp = JArrayHelper::toString($strAttr['attribs']))
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{
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$buffer .= ' ' . $temp;
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}
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$buffer .= $tagEnd . $lnEnd;
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}
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// Generate stylesheet declarations
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foreach ($document->_style as $type => $content)
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{
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$buffer .= $tab . '<style type="' . $type . '">' . $lnEnd;
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// This is for full XHTML support.
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if ($document->_mime != 'text/html')
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{
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$buffer .= $tab . $tab . '<![CDATA[' . $lnEnd;
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}
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$buffer .= $content . $lnEnd;
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// See above note
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if ($document->_mime != 'text/html')
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{
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$buffer .= $tab . $tab . ']]>' . $lnEnd;
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}
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$buffer .= $tab . '</style>' . $lnEnd;
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}
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// Generate script file links
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foreach ($document->_scripts as $strSrc => $strAttr)
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{
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$buffer .= $tab . '<script src="' . $strSrc . '"';
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if (!is_null($strAttr['mime']))
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{
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$buffer .= ' type="' . $strAttr['mime'] . '"';
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}
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if ($strAttr['defer'])
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{
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$buffer .= ' defer="defer"';
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}
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if ($strAttr['async'])
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{
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$buffer .= ' async="async"';
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}
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$buffer .= '></script>' . $lnEnd;
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}
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// Generate script declarations
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foreach ($document->_script as $type => $content)
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{
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$buffer .= $tab . '<script type="' . $type . '">' . $lnEnd;
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// This is for full XHTML support.
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if ($document->_mime != 'text/html')
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{
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$buffer .= $tab . $tab . '<![CDATA[' . $lnEnd;
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}
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$buffer .= $content . $lnEnd;
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// See above note
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if ($document->_mime != 'text/html')
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{
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$buffer .= $tab . $tab . ']]>' . $lnEnd;
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}
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$buffer .= $tab . '</script>' . $lnEnd;
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}
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// Generate script language declarations.
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if (count(JText::script()))
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{
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$buffer .= $tab . '<script type="text/javascript">' . $lnEnd;
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$buffer .= $tab . $tab . '(function() {' . $lnEnd;
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$buffer .= $tab . $tab . $tab . 'var strings = ' . json_encode(JText::script()) . ';' . $lnEnd;
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$buffer .= $tab . $tab . $tab . 'if (typeof Joomla == \'undefined\') {' . $lnEnd;
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$buffer .= $tab . $tab . $tab . $tab . 'Joomla = {};' . $lnEnd;
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$buffer .= $tab . $tab . $tab . $tab . 'Joomla.JText = strings;' . $lnEnd;
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$buffer .= $tab . $tab . $tab . '}' . $lnEnd;
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$buffer .= $tab . $tab . $tab . 'else {' . $lnEnd;
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$buffer .= $tab . $tab . $tab . $tab . 'Joomla.JText.load(strings);' . $lnEnd;
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$buffer .= $tab . $tab . $tab . '}' . $lnEnd;
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$buffer .= $tab . $tab . '})();' . $lnEnd;
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$buffer .= $tab . '</script>' . $lnEnd;
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}
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foreach ($document->_custom as $custom)
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{
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$buffer .= $tab . $custom . $lnEnd;
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}
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return $buffer;
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}
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}
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