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NamespaceAtRuleSanitizer.php
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NamespaceAtRuleSanitizer.php
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<?php
/**
* @file
* @license https://opensource.org/licenses/Apache-2.0 Apache-2.0
*/
namespace Wikimedia\CSS\Sanitizer;
use Wikimedia\CSS\Grammar\Alternative;
use Wikimedia\CSS\Grammar\Juxtaposition;
use Wikimedia\CSS\Grammar\Matcher;
use Wikimedia\CSS\Grammar\MatcherFactory;
use Wikimedia\CSS\Grammar\Quantifier;
use Wikimedia\CSS\Objects\AtRule;
use Wikimedia\CSS\Objects\CSSObject;
use Wikimedia\CSS\Objects\Rule;
use Wikimedia\CSS\Util;
/**
* Sanitizes a CSS \@namespace rule
* @see https://www.w3.org/TR/2014/REC-css-namespaces-3-20140320/
*/
class NamespaceAtRuleSanitizer extends RuleSanitizer {
/** @var Matcher */
protected $matcher;
/**
* @param MatcherFactory $matcherFactory
*/
public function __construct( MatcherFactory $matcherFactory ) {
$this->matcher = new Juxtaposition( [
Quantifier::optional( $matcherFactory->ident() ),
new Alternative( [
$matcherFactory->urlstring( 'namespace' ),
$matcherFactory->url( 'namespace' ),
] ),
] );
}
/** @inheritDoc */
public function getIndex() {
return -900;
}
/** @inheritDoc */
public function handlesRule( Rule $rule ) {
return $rule instanceof AtRule && !strcasecmp( $rule->getName(), 'namespace' );
}
/** @inheritDoc */
protected function doSanitize( CSSObject $object ) {
if ( !$object instanceof AtRule || !$this->handlesRule( $object ) ) {
$this->sanitizationError( 'expected-at-rule', $object, [ 'namespace' ] );
return null;
}
if ( $object->getBlock() !== null ) {
$this->sanitizationError( 'at-rule-block-not-allowed', $object->getBlock(), [ 'namespace' ] );
return null;
}
if ( !$this->matcher->matchAgainst( $object->getPrelude(), [ 'mark-significance' => true ] ) ) {
$cv = Util::findFirstNonWhitespace( $object->getPrelude() );
if ( $cv ) {
$this->sanitizationError( 'invalid-namespace-value', $cv );
} else {
$this->sanitizationError( 'missing-namespace-value', $object );
}
return null;
}
return $this->fixPreludeWhitespace( $object, true );
}
}

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text/x-php
Expires
Aug 17 2026, 15:52 (10 w, 3 d ago)
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c3/89/5ba207eca24186c3c69e2eb1eab0
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NamespaceAtRuleSanitizer.php (1 KB)

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