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https://github.com/smogon/pokemon-showdown-client.git
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85 lines
2.3 KiB
PHP
85 lines
2.3 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\KeywordMatcher;
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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 \@keyframes rule
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* @see https://www.w3.org/TR/2018/WD-css-animations-1-20181011/#keyframes
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*/
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class KeyframesAtRuleSanitizer extends RuleSanitizer {
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/** @var Matcher */
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protected $nameMatcher;
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/** @var Sanitizer */
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protected $ruleSanitizer;
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/**
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* @param MatcherFactory $matcherFactory
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* @param PropertySanitizer $propertySanitizer Sanitizer for declarations
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*/
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public function __construct(
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MatcherFactory $matcherFactory, PropertySanitizer $propertySanitizer
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) {
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$this->nameMatcher = new Alternative( [
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$matcherFactory->customIdent( [ 'none' ] ),
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$matcherFactory->string(),
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] );
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$this->ruleSanitizer = new StyleRuleSanitizer(
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Quantifier::hash( new Alternative( [
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new KeywordMatcher( [ 'from', 'to' ] ), $matcherFactory->rawPercentage()
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] ) ),
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$propertySanitizer
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);
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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(), 'keyframes' );
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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, [ 'keyframes' ] );
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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-required', $object, [ 'keyframes' ] );
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return null;
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}
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// Test the keyframe name
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if ( !$this->nameMatcher->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-keyframe-name', $cv );
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} else {
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$this->sanitizationError( 'missing-keyframe-name', $object );
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}
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return null;
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}
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$ret = clone $object;
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$this->fixPreludeWhitespace( $ret, false );
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$this->sanitizeRuleBlock( $ret->getBlock(), [ $this->ruleSanitizer ] );
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return $ret;
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}
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}
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