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4
* Validates a Percentage as defined by the CSS spec.
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6
class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
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10
* Instance of HTMLPurifier_AttrDef_CSS_Number to defer number validation
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15
* @param Bool indicating whether to forbid negative values
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18
$this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
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23
$string = $this->parseCDATA($string);
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if ($string === '') return false;
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$length = strlen($string);
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if ($length === 1) return false;
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if ($string[$length - 1] !== '%') return false;
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30
$number = substr($string, 0, $length - 1);
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31
$number = $this->number_def->validate($number, $config, $context);
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33
if ($number === false) return false;