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<?php /** * Validates a MultiLength as defined by the HTML spec. * * A multilength is either a integer (pixel count), a percentage, or * a relative number. */ class HTMLPurifier_AttrDef_HTML_MultiLength extends HTMLPurifier_AttrDef_HTML_Length { /** * @param string $string * @param HTMLPurifier_Config $config * @param HTMLPurifier_Context $context * @return bool|string */ public function validate($string, $config, $context) { $string = trim($string); if ($string === '') { return false; } $parent_result = parent::validate($string, $config, $context); if ($parent_result !== false) { return $parent_result; } $length = strlen($string); $last_char = $string[$length - 1]; if ($last_char !== '*') { return false; } $int = substr($string, 0, $length - 1); if ($int == '') { return '*'; } if (!is_numeric($int)) { return false; } $int = (int)$int; if ($int < 0) { return false; } if ($int == 0) { return '0'; } if ($int == 1) { return '*'; } return ((string)$int) . '*'; } } // vim: et sw=4 sts=4