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https://github.com/smogon/pokemon-showdown-client.git
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86 lines
2.6 KiB
PHP
86 lines
2.6 KiB
PHP
<?php
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/**
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* @file
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* @license https://opensource.org/licenses/Apache-2.0 Apache-2.0
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*/
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namespace Wikimedia\CSS\Sanitizer;
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use Wikimedia\CSS\Grammar\Alternative;
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use Wikimedia\CSS\Grammar\FunctionMatcher;
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use Wikimedia\CSS\Grammar\Juxtaposition;
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use Wikimedia\CSS\Grammar\Matcher;
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use Wikimedia\CSS\Grammar\MatcherFactory;
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use Wikimedia\CSS\Grammar\Quantifier;
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use Wikimedia\CSS\Objects\AtRule;
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use Wikimedia\CSS\Objects\CSSObject;
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use Wikimedia\CSS\Objects\Rule;
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use Wikimedia\CSS\Util;
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/**
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* Sanitizes a CSS \@import rule
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* @see https://www.w3.org/TR/2018/CR-css-cascade-4-20180828/#at-import
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*/
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class ImportAtRuleSanitizer extends RuleSanitizer {
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/** @var Matcher */
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protected $matcher;
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/**
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* @param MatcherFactory $matcherFactory
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* @param array $options Additional options:
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* - strict: (bool) Only accept defined syntax in supports(). Default true.
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* - declarationSanitizer: (PropertySanitizer) Check supports() declarations against this
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* Sanitizer.
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*/
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public function __construct( MatcherFactory $matcherFactory, array $options = [] ) {
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$declarationSanitizer = $options['declarationSanitizer'] ?? null;
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$strict = $options['strict'] ?? true;
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$this->matcher = new Juxtaposition( [
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new Alternative( [
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$matcherFactory->url( 'css' ),
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$matcherFactory->urlstring( 'css' ),
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] ),
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Quantifier::optional( new FunctionMatcher( 'supports', new Alternative( [
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$matcherFactory->cssSupportsCondition( $declarationSanitizer, $strict ),
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$matcherFactory->cssDeclaration( $declarationSanitizer ),
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] ) ) ),
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$matcherFactory->cssMediaQueryList(),
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] );
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}
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/** @inheritDoc */
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public function getIndex() {
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return -1000;
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}
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/** @inheritDoc */
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public function handlesRule( Rule $rule ) {
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return $rule instanceof AtRule && !strcasecmp( $rule->getName(), 'import' );
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}
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/** @inheritDoc */
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protected function doSanitize( CSSObject $object ) {
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if ( !$object instanceof AtRule || !$this->handlesRule( $object ) ) {
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$this->sanitizationError( 'expected-at-rule', $object, [ 'import' ] );
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return null;
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}
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if ( $object->getBlock() !== null ) {
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$this->sanitizationError( 'at-rule-block-not-allowed', $object->getBlock(), [ 'import' ] );
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return null;
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}
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if ( !$this->matcher->matchAgainst( $object->getPrelude(), [ 'mark-significance' => true ] ) ) {
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$cv = Util::findFirstNonWhitespace( $object->getPrelude() );
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if ( $cv ) {
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$this->sanitizationError( 'invalid-import-value', $cv );
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} else {
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$this->sanitizationError( 'missing-import-source', $object );
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}
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return null;
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}
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return $this->fixPreludeWhitespace( $object, true );
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}
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}
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