silverstripe-framework/integration/HTMLValue.php

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<?php
/**
* This class acts as a wrapper around the built in DOMDocument class in order to use it to manage a HTML snippet,
* rather than a whole document, while still exposing the DOMDocument API.
*
* @package sapphire
* @subpackage integration
*/
class SS_HTMLValue extends ViewableData {
/**
* @var DOMDocument
*/
protected $document;
/**
* @param string $content
*/
public function __construct($content = null) {
$this->document = new DOMDocument('1.0', 'UTF-8');
$this->document->scrictErrorChecking = false;
$this->setContent($content);
parent::__construct();
}
/**
* @return string
*/
public function getContent() {
// strip the body tags from the output (which are automatically added by DOMDocument)
return preg_replace (
array (
'/^\s*<body[^>]*>/i',
'/<\/body[^>]*>\s*$/i'
),
null,
$this->getDocument()->saveXML($this->getDocument()->documentElement->lastChild)
);
}
/**
* @param string $content
* @return bool
*/
public function setContent($content) {
// Ensure that \r (carriage return) characters don't get replaced with "&#13;" entity by DOMDocument
// apparently it's in the XML standard, but that messes it up because we're using HTML
$content = str_replace(chr(13), '', $content);
return @$this->getDocument()->loadHTML(
'<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head>' .
"<body>$content</body></html>"
);
}
/**
* @return DOMDocument
*/
public function getDocument() {
return $this->document;
}
/**
* A simple convenience wrapper around DOMDocument::getElementsByTagName().
*
* @param string $name
* @return DOMNodeList
*/
public function getElementsByTagName($name) {
return $this->getDocument()->getElementsByTagName($name);
}
/**
* @see HTMLValue::getContent()
*/
public function forTemplate() {
return $this->getContent();
}
}