Proyectos de Subversion Moodle

Rev

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<?php
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/**
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 * Validates a rel/rev link attribute against a directive of allowed values
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 * @note We cannot use Enum because link types allow multiple
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 *       values.
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 * @note Assumes link types are ASCII text
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 */
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class HTMLPurifier_AttrDef_HTML_LinkTypes extends HTMLPurifier_AttrDef
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{
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    /**
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     * Name config attribute to pull.
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     * @type string
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     */
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    protected $name;
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    /**
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     * @param string $name
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     */
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    public function __construct($name)
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    {
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        $configLookup = array(
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            'rel' => 'AllowedRel',
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            'rev' => 'AllowedRev'
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        );
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        if (!isset($configLookup[$name])) {
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            trigger_error(
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                'Unrecognized attribute name for link ' .
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                'relationship.',
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                E_USER_ERROR
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            );
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            return;
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        }
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        $this->name = $configLookup[$name];
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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 $context
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     * @return bool|string
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     */
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    public function validate($string, $config, $context)
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    {
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        $allowed = $config->get('Attr.' . $this->name);
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        if (empty($allowed)) {
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            return false;
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        }
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        $string = $this->parseCDATA($string);
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        $parts = explode(' ', $string);
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        // lookup to prevent duplicates
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        $ret_lookup = array();
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        foreach ($parts as $part) {
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            $part = strtolower(trim($part));
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            if (!isset($allowed[$part])) {
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                continue;
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            }
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            $ret_lookup[$part] = true;
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        }
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        if (empty($ret_lookup)) {
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            return false;
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        }
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        $string = implode(' ', array_keys($ret_lookup));
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        return $string;
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    }
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}
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// vim: et sw=4 sts=4