mirror of
https://github.com/ezyang/htmlpurifier.git
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78 lines
2.2 KiB
PHP
78 lines
2.2 KiB
PHP
<?php
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/**
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* Validates shorthand CSS property list-style.
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* @warning Does not support url tokens that have internal spaces.
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*/
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class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef
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{
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/**
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* Local copy of component validators.
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* @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.
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*/
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protected $info;
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public function __construct($config) {
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$def = $config->getCSSDefinition();
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$this->info['list-style-type'] = $def->info['list-style-type'];
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$this->info['list-style-position'] = $def->info['list-style-position'];
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$this->info['list-style-image'] = $def->info['list-style-image'];
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}
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public function validate($string, $config, $context) {
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// regular pre-processing
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$string = $this->parseCDATA($string);
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if ($string === '') return false;
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// assumes URI doesn't have spaces in it
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$bits = explode(' ', strtolower($string)); // bits to process
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$caught = array();
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$caught['type'] = false;
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$caught['position'] = false;
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$caught['image'] = false;
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$i = 0; // number of catches
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$none = false;
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foreach ($bits as $bit) {
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if ($i >= 3) return; // optimization bit
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if ($bit === '') continue;
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foreach ($caught as $key => $status) {
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if ($status !== false) continue;
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$r = $this->info['list-style-' . $key]->validate($bit, $config, $context);
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if ($r === false) continue;
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if ($r === 'none') {
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if ($none) continue;
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else $none = true;
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if ($key == 'image') continue;
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}
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$caught[$key] = $r;
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$i++;
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break;
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}
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}
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if (!$i) return false;
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$ret = array();
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// construct type
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if ($caught['type']) $ret[] = $caught['type'];
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// construct image
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if ($caught['image']) $ret[] = $caught['image'];
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// construct position
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if ($caught['position']) $ret[] = $caught['position'];
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if (empty($ret)) return false;
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return implode(' ', $ret);
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}
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}
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