<?php
/**
* @package s9e\TextFormatter
* @copyright Copyright (c) 2010-2021 The s9e authors
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
namespace s9e\TextFormatter\Configurator\TemplateChecks;
use DOMElement;
use DOMXPath;
use s9e\TextFormatter\Configurator\Exceptions\UnsafeTemplateException;
use s9e\TextFormatter\Configurator\Items\Tag;
use s9e\TextFormatter\Configurator\TemplateCheck;
class DisallowElement extends TemplateCheck
{
/**
* @var string Local name of the disallowed element
*/
public $elName;
/**
* Constructor
*
* @param string $elName Local name of the disallowed element
*/
public function __construct($elName)
{
// NOTE: the default template normalization rules force elements' names to be lowercase
$this->elName = strtolower($elName);
}
/**
* Test for the presence of an element of given name
*
* @param DOMElement $template <xsl:template/> node
* @param Tag $tag Tag this template belongs to
* @return void
*/
public function check(DOMElement $template, Tag $tag)
{
$xpath = new DOMXPath($template->ownerDocument);
$query
= '//*[translate(local-name(), "ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklmnopqrstuvwxyz") = "' . $this->elName . '"]'
. '|'
. '//xsl:element[translate(@name,"ABCDEFGHIJKLMNOPQRSTUVWXYZ", "abcdefghijklmnopqrstuvwxyz") = "' . $this->elName . '"]';
$node = $xpath->query($query)->item(0);
if ($node)
{
throw new UnsafeTemplateException("Element '" . $this->elName . "' is disallowed", $node);
}
}
}