mirror of
https://github.com/ezyang/htmlpurifier.git
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45 lines
1.0 KiB
PHP
45 lines
1.0 KiB
PHP
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<?php
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class HTMLPurifier_AttrDef_Number extends HTMLPurifier_AttrDef
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{
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function validate($number, $config, &$context) {
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$number = $this->parseCDATA($number);
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if ($number === '') return false;
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$sign = '';
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switch ($number[0]) {
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case '-':
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$sign = '-';
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case '+':
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$number = substr($number, 1);
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}
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if (ctype_digit($number)) {
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$number = ltrim($number, '0');
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return $number ? $sign . $number : '0';
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}
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if (!strpos($number, '.')) return false;
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list($left, $right) = explode('.', $number, 2);
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if (!ctype_digit($left)) return false;
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$left = ltrim($left, '0');
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$right = rtrim($right, '0');
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if ($right === '') {
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return $left ? $sign . $left : '0';
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} elseif (!ctype_digit($right)) {
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return false;
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}
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return $sign . $left . '.' . $right;
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}
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}
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?>
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