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42 lines
950 B
PHP
42 lines
950 B
PHP
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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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public function validate($string, $config, $context) {
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$string = trim($string);
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if ($string === '') return false;
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$parent_result = parent::validate($string, $config, $context);
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if ($parent_result !== false) return $parent_result;
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$length = strlen($string);
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$last_char = $string[$length - 1];
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if ($last_char !== '%') return false;
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$points = substr($string, 0, $length - 1);
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if (!is_numeric($points)) return false;
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$points = (int) $points;
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if ($points < 0) return '0%';
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if ($points > 100) return '100%';
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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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