mirror of
https://github.com/renbaoshuo/S2OJ.git
synced 2024-12-12 14:26:20 +00:00
49 lines
1.5 KiB
PHP
49 lines
1.5 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Implements special behavior for class attribute (normally NMTOKENS)
|
||
|
|
*/
|
||
|
|
class HTMLPurifier_AttrDef_HTML_Class extends HTMLPurifier_AttrDef_HTML_Nmtokens
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* @param string $string
|
||
|
|
* @param HTMLPurifier_Config $config
|
||
|
|
* @param HTMLPurifier_Context $context
|
||
|
|
* @return bool|string
|
||
|
|
*/
|
||
|
|
protected function split($string, $config, $context)
|
||
|
|
{
|
||
|
|
// really, this twiddle should be lazy loaded
|
||
|
|
$name = $config->getDefinition('HTML')->doctype->name;
|
||
|
|
if ($name == "XHTML 1.1" || $name == "XHTML 2.0") {
|
||
|
|
return parent::split($string, $config, $context);
|
||
|
|
} else {
|
||
|
|
return preg_split('/\s+/', $string);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param array $tokens
|
||
|
|
* @param HTMLPurifier_Config $config
|
||
|
|
* @param HTMLPurifier_Context $context
|
||
|
|
* @return array
|
||
|
|
*/
|
||
|
|
protected function filter($tokens, $config, $context)
|
||
|
|
{
|
||
|
|
$allowed = $config->get('Attr.AllowedClasses');
|
||
|
|
$forbidden = $config->get('Attr.ForbiddenClasses');
|
||
|
|
$ret = array();
|
||
|
|
foreach ($tokens as $token) {
|
||
|
|
if (($allowed === null || isset($allowed[$token])) &&
|
||
|
|
!isset($forbidden[$token]) &&
|
||
|
|
// We need this O(n) check because of PHP's array
|
||
|
|
// implementation that casts -0 to 0.
|
||
|
|
!in_array($token, $ret, true)
|
||
|
|
) {
|
||
|
|
$ret[] = $token;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $ret;
|
||
|
|
}
|
||
|
|
}
|