mirror of
https://github.com/renbaoshuo/S2OJ.git
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96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
49 lines
1.5 KiB
PHP
49 lines
1.5 KiB
PHP
<?php
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/**
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* Implements special behavior for class attribute (normally NMTOKENS)
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*/
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class HTMLPurifier_AttrDef_HTML_Class extends HTMLPurifier_AttrDef_HTML_Nmtokens
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{
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/**
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* @param string $string
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return bool|string
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*/
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protected function split($string, $config, $context)
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{
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// really, this twiddle should be lazy loaded
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$name = $config->getDefinition('HTML')->doctype->name;
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if ($name == "XHTML 1.1" || $name == "XHTML 2.0") {
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return parent::split($string, $config, $context);
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} else {
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return preg_split('/\s+/', $string);
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}
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}
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/**
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* @param array $tokens
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return array
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*/
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protected function filter($tokens, $config, $context)
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{
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$allowed = $config->get('Attr.AllowedClasses');
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$forbidden = $config->get('Attr.ForbiddenClasses');
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$ret = array();
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foreach ($tokens as $token) {
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if (($allowed === null || isset($allowed[$token])) &&
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!isset($forbidden[$token]) &&
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// We need this O(n) check because of PHP's array
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// implementation that casts -0 to 0.
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!in_array($token, $ret, true)
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) {
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$ret[] = $token;
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}
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}
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return $ret;
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}
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}
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