Daniel Ziegenberg
be7f6d4834
Prior to this change, all the line endings in the imported HTMLPurifier library were using CRLF (\r\n aka Windows style), but the HTMLPurifier source and also the downloadable artefacts use LF (\n aka Linux style) as line endings. This has been the case since510d190382when with the commit "MDL-38672 import HTML Purifier 4.5.0" all line endings were changed from LF to CRLF. There was no comment in the commit on why this change was done. As the original source uses LF, this commit partly reverts510d190382and goes back to LF as line endings. Signed-off-by: Daniel Ziegenberg <daniel@ziegenberg.at>
53 lines
1.3 KiB
PHP
53 lines
1.3 KiB
PHP
<?php
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// must be called POST validation
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/**
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* Adds rel="nofollow" to all outbound links. This transform is
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* only attached if Attr.Nofollow is TRUE.
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*/
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class HTMLPurifier_AttrTransform_Nofollow extends HTMLPurifier_AttrTransform
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{
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/**
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* @type HTMLPurifier_URIParser
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*/
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private $parser;
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public function __construct()
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{
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$this->parser = new HTMLPurifier_URIParser();
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}
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/**
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* @param array $attr
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return array
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*/
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public function transform($attr, $config, $context)
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{
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if (!isset($attr['href'])) {
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return $attr;
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}
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// XXX Kind of inefficient
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$url = $this->parser->parse($attr['href']);
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$scheme = $url->getSchemeObj($config, $context);
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if ($scheme->browsable && !$url->isLocal($config, $context)) {
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if (isset($attr['rel'])) {
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$rels = explode(' ', $attr['rel']);
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if (!in_array('nofollow', $rels)) {
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$rels[] = 'nofollow';
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}
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$attr['rel'] = implode(' ', $rels);
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} else {
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$attr['rel'] = 'nofollow';
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}
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}
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return $attr;
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}
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}
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// vim: et sw=4 sts=4
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