2009-10-11 02:07:27 +02:00
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<?php
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/**
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* This class acts as a wrapper around the built in DOMDocument class in order to use it to manage a HTML snippet,
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* rather than a whole document, while still exposing the DOMDocument API.
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*
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* @package sapphire
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* @subpackage integration
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*/
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class SS_HTMLValue extends ViewableData {
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/**
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* @var DOMDocument
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*/
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protected $document;
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/**
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* @param string $content
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*/
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public function __construct($content = null) {
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$this->document = new DOMDocument('1.0', 'UTF-8');
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$this->document->scrictErrorChecking = false;
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$this->setContent($content);
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parent::__construct();
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}
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/**
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* @return string
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*/
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public function getContent() {
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2010-04-12 05:31:19 +02:00
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$content = $this->cleanContent();
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2009-10-11 02:07:27 +02:00
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// strip the body tags from the output (which are automatically added by DOMDocument)
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return preg_replace (
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array (
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'/^\s*<body[^>]*>/i',
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'/<\/body[^>]*>\s*$/i'
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),
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null,
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2010-04-12 05:31:19 +02:00
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$content
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2009-10-11 02:07:27 +02:00
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);
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}
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/**
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* @param string $content
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* @return bool
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*/
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public function setContent($content) {
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2009-10-13 03:44:41 +02:00
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return @$this->getDocument()->loadHTML(
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'<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head>' .
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"<body>$content</body></html>"
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);
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2009-10-11 02:07:27 +02:00
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}
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2010-04-12 05:31:19 +02:00
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/**
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* Attempt to clean invalid HTML, which messes up diffs.
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* This checks for various methods and cleans code if possible.
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*
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* NB: By default, only extremely simple tidying is performed,
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* by passing through DomDocument::loadHTML and saveXML
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* You will either need to install the php_tidy module
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* See: http://www.php.net/manual/en/tidy.installation.php
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* or else install the SilverStripe module for HTMLPurifier from:
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* http://svn.silverstripe.com/open/modules/htmlpurifier/trunk
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* See also: http://htmlpurifier.org
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*/
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protected function cleanContent() {
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$doc = $this->getDocument();
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// At most basic level of cleaning, use DOMDocument to save valid XML.
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$content = $doc->saveXML($doc->documentElement->lastChild);
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if (class_exists('Tidy')) {
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// Check for the Tidy class, provided by php-tidy
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$tidy = tidy_parse_string($content,
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array(
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'clean' => true,
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'output-xhtml' => true,
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'show-body-only' => true,
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'wrap' => 0,
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'input-encoding' => 'utf8',
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'output-encoding' => 'utf8'
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));
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$tidy->cleanRepair();
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$content = '' . $tidy;
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} else if (class_exists('HTMLPurifier')) {
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// Look otherwise for HTMLPurifier, provided by module.
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$html = new HTMLPurifier();
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$content = $html->purify($content);
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}
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return $content;
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}
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2009-10-11 02:07:27 +02:00
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/**
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* @return DOMDocument
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*/
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public function getDocument() {
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return $this->document;
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}
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/**
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* A simple convenience wrapper around DOMDocument::getElementsByTagName().
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*
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* @param string $name
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* @return DOMNodeList
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*/
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public function getElementsByTagName($name) {
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return $this->getDocument()->getElementsByTagName($name);
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}
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/**
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* @see HTMLValue::getContent()
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*/
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public function forTemplate() {
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return $this->getContent();
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}
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2009-10-13 03:44:41 +02:00
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}
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