| 1: | <?php |
| 2: | |
| 3: | /** |
| 4: | * Framework class for strings that involve multiple values. |
| 5: | * |
| 6: | * Certain CSS properties such as border-width and margin allow multiple |
| 7: | * lengths to be specified. This class can take a vanilla border-width |
| 8: | * definition and multiply it, usually into a max of four. |
| 9: | * |
| 10: | * @note Even though the CSS specification isn't clear about it, inherit |
| 11: | * can only be used alone: it will never manifest as part of a multi |
| 12: | * shorthand declaration. Thus, this class does not allow inherit. |
| 13: | */ |
| 14: | class HTMLPurifier_AttrDef_CSS_Multiple extends HTMLPurifier_AttrDef |
| 15: | { |
| 16: | /** |
| 17: | * Instance of component definition to defer validation to. |
| 18: | * @type HTMLPurifier_AttrDef |
| 19: | * @todo Make protected |
| 20: | */ |
| 21: | public $single; |
| 22: | |
| 23: | /** |
| 24: | * Max number of values allowed. |
| 25: | * @todo Make protected |
| 26: | */ |
| 27: | public $max; |
| 28: | |
| 29: | /** |
| 30: | * @param HTMLPurifier_AttrDef $single HTMLPurifier_AttrDef to multiply |
| 31: | * @param int $max Max number of values allowed (usually four) |
| 32: | */ |
| 33: | public function __construct($single, $max = 4) |
| 34: | { |
| 35: | $this->single = $single; |
| 36: | $this->max = $max; |
| 37: | } |
| 38: | |
| 39: | /** |
| 40: | * @param string $string |
| 41: | * @param HTMLPurifier_Config $config |
| 42: | * @param HTMLPurifier_Context $context |
| 43: | * @return bool|string |
| 44: | */ |
| 45: | public function validate($string, $config, $context) |
| 46: | { |
| 47: | $string = $this->mungeRgb($this->parseCDATA($string)); |
| 48: | if ($string === '') { |
| 49: | return false; |
| 50: | } |
| 51: | $parts = explode(' ', $string); // parseCDATA replaced \r, \t and \n |
| 52: | $length = count($parts); |
| 53: | $final = ''; |
| 54: | for ($i = 0, $num = 0; $i < $length && $num < $this->max; $i++) { |
| 55: | if (ctype_space($parts[$i])) { |
| 56: | continue; |
| 57: | } |
| 58: | $result = $this->single->validate($parts[$i], $config, $context); |
| 59: | if ($result !== false) { |
| 60: | $final .= $result . ' '; |
| 61: | $num++; |
| 62: | } |
| 63: | } |
| 64: | if ($final === '') { |
| 65: | return false; |
| 66: | } |
| 67: | return rtrim($final); |
| 68: | } |
| 69: | } |
| 70: | |
| 71: | // vim: et sw=4 sts=4 |
| 72: |