mirror of https://github.com/friendica/friendica
55 lines
1.2 KiB
PHP
55 lines
1.2 KiB
PHP
<?php
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/**
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* Validates a Percentage as defined by the CSS spec.
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*/
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class HTMLPurifier_AttrDef_CSS_Percentage extends HTMLPurifier_AttrDef
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{
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/**
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* Instance to defer number validation to.
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* @type HTMLPurifier_AttrDef_CSS_Number
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*/
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protected $number_def;
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/**
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* @param bool $non_negative Whether to forbid negative values
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*/
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public function __construct($non_negative = false)
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{
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$this->number_def = new HTMLPurifier_AttrDef_CSS_Number($non_negative);
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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 = $this->parseCDATA($string);
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if ($string === '') {
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return false;
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}
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$length = strlen($string);
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if ($length === 1) {
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return false;
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}
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if ($string[$length - 1] !== '%') {
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return false;
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}
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$number = substr($string, 0, $length - 1);
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$number = $this->number_def->validate($number, $config, $context);
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if ($number === false) {
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return false;
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}
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return "$number%";
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}
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}
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// vim: et sw=4 sts=4
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