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57 lines
1.2 KiB
57 lines
1.2 KiB
4 years ago
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<?php
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/**
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* Validates the HTML type length (not to be confused with CSS's length).
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*
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* This accepts integer pixels or percentages as lengths for certain
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* HTML attributes.
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*/
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class HTMLPurifier_AttrDef_HTML_Length extends HTMLPurifier_AttrDef_HTML_Pixels
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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 ($last_char !== '%') {
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return false;
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}
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$points = substr($string, 0, $length - 1);
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if (!is_numeric($points)) {
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return false;
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}
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$points = (int)$points;
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if ($points < 0) {
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return '0%';
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}
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if ($points > 100) {
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return '100%';
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}
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return ((string)$points) . '%';
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}
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}
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// vim: et sw=4 sts=4
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