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