remove autoload section in composer.json

[github/wallabag/wallabag.git] / inc / 3rdparty / htmlpurifier / HTMLPurifier / AttrDef / HTML / Nmtokens.php

<?php\r
\r
/**\r
 * Validates contents based on NMTOKENS attribute type.\r
 */\r
class HTMLPurifier_AttrDef_HTML_Nmtokens extends HTMLPurifier_AttrDef\r
{\r
\r
    /**\r
     * @param string $string\r
     * @param HTMLPurifier_Config $config\r
     * @param HTMLPurifier_Context $context\r
     * @return bool|string\r
     */\r
    public function validate($string, $config, $context)\r
    {\r
        $string = trim($string);\r
\r
        // early abort: '' and '0' (strings that convert to false) are invalid\r
        if (!$string) {\r
            return false;\r
        }\r
\r
        $tokens = $this->split($string, $config, $context);\r
        $tokens = $this->filter($tokens, $config, $context);\r
        if (empty($tokens)) {\r
            return false;\r
        }\r
        return implode(' ', $tokens);\r
    }\r
\r
    /**\r
     * Splits a space separated list of tokens into its constituent parts.\r
     * @param string $string\r
     * @param HTMLPurifier_Config $config\r
     * @param HTMLPurifier_Context $context\r
     * @return array\r
     */\r
    protected function split($string, $config, $context)\r
    {\r
        // OPTIMIZABLE!\r
        // do the preg_match, capture all subpatterns for reformulation\r
\r
        // we don't support U+00A1 and up codepoints or\r
        // escaping because I don't know how to do that with regexps\r
        // and plus it would complicate optimization efforts (you never\r
        // see that anyway).\r
        $pattern = '/(?:(?<=\s)|\A)' . // look behind for space or string start\r
            '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)' .\r
            '(?:(?=\s)|\z)/'; // look ahead for space or string end\r
        preg_match_all($pattern, $string, $matches);\r
        return $matches[1];\r
    }\r
\r
    /**\r
     * Template method for removing certain tokens based on arbitrary criteria.\r
     * @note If we wanted to be really functional, we'd do an array_filter\r
     *       with a callback. But... we're not.\r
     * @param array $tokens\r
     * @param HTMLPurifier_Config $config\r
     * @param HTMLPurifier_Context $context\r
     * @return array\r
     */\r
    protected function filter($tokens, $config, $context)\r
    {\r
        return $tokens;\r
    }\r
}\r
\r
// vim: et sw=4 sts=4\r