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https://github.com/renbaoshuo/S2OJ.git
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46 lines
1.1 KiB
PHP
46 lines
1.1 KiB
PHP
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<?php
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// must be called POST validation
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/**
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* Adds target="blank" to all outbound links. This transform is
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* only attached if Attr.TargetBlank is TRUE. This works regardless
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* of whether or not Attr.AllowedFrameTargets
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*/
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class HTMLPurifier_AttrTransform_TargetBlank 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 && !$url->isBenign($config, $context)) {
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$attr['target'] = '_blank';
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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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