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<?php /** * Framework class for strings that involve multiple values. * * Certain CSS properties such as border-width and margin allow multiple * lengths to be specified. This class can take a vanilla border-width * definition and multiply it, usually into a max of four. * * @note Even though the CSS specification isn't clear about it, inherit * can only be used alone: it will never manifest as part of a multi * shorthand declaration. Thus, this class does not allow inherit. */ class HTMLPurifier_AttrDef_CSS_Multiple extends HTMLPurifier_AttrDef { /** * Instance of component definition to defer validation to. * @type HTMLPurifier_AttrDef * @todo Make protected */ public $single; /** * Max number of values allowed. * @todo Make protected */ public $max; /** * @param HTMLPurifier_AttrDef $single HTMLPurifier_AttrDef to multiply * @param int $max Max number of values allowed (usually four) */ public function __construct($single, $max = 4) { $this->single = $single; $this->max = $max; } /** * @param string $string * @param HTMLPurifier_Config $config * @param HTMLPurifier_Context $context * @return bool|string */ public function validate($string, $config, $context) { $string = $this->mungeRgb($this->parseCDATA($string)); if ($string === '') { return false; } $parts = explode(' ', $string); // parseCDATA replaced \r, \t and \n $length = count($parts); $final = ''; for ($i = 0, $num = 0; $i < $length && $num < $this->max; $i++) { if (ctype_space($parts[$i])) { continue; } $result = $this->single->validate($parts[$i], $config, $context); if ($result !== false) { $final .= $result . ' '; $num++; } } if ($final === '') { return false; } return rtrim($final); } } // vim: et sw=4 sts=4