diff options
Diffstat (limited to 'lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Multiple.php')
-rw-r--r-- | lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Multiple.php | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Multiple.php b/lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Multiple.php new file mode 100644 index 000000000..4d62a40d7 --- /dev/null +++ b/lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Multiple.php @@ -0,0 +1,58 @@ +<?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. + * @todo Make protected + */ + public $single; + + /** + * Max number of values allowed. + * @todo Make protected + */ + public $max; + + /** + * @param $single HTMLPurifier_AttrDef to multiply + * @param $max Max number of values allowed (usually four) + */ + public function __construct($single, $max = 4) { + $this->single = $single; + $this->max = $max; + } + + public function validate($string, $config, $context) { + $string = $this->parseCDATA($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 |