MediaWiki 1.30.2

[autoinstallsdev/mediawiki.git] / vendor / wikimedia / css-sanitizer / src / Sanitizer / FontFeatureValuesAtRuleSanitizer.php

diff --git a/vendor/wikimedia/css-sanitizer/src/Sanitizer/FontFeatureValuesAtRuleSanitizer.php b/vendor/wikimedia/css-sanitizer/src/Sanitizer/FontFeatureValuesAtRuleSanitizer.php
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+++ b/vendor/wikimedia/css-sanitizer/src/Sanitizer/FontFeatureValuesAtRuleSanitizer.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\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 \@font-feature-values rule
+ * @see https://www.w3.org/TR/2013/CR-css-fonts-3-20131003/#at-font-feature-values-rule
+ */
+class FontFeatureValuesAtRuleSanitizer extends RuleSanitizer {
+
+       /** @var Matcher */
+       protected $fontListMatcher;
+
+       /** @var FontFeatureValueAtRuleSanitizer[] */
+       protected $ruleSanitizers;
+
+       /**
+        * @param MatcherFactory $matcherFactory
+        */
+       public function __construct( MatcherFactory $matcherFactory ) {
+               $this->fontListMatcher = Quantifier::hash( new Alternative( [
+                       $matcherFactory->string(),
+                       Quantifier::plus( $matcherFactory->ident() ),
+               ] ) );
+
+               $n = $matcherFactory->rawNumber();
+               $n2 = Quantifier::count( $n, 1, 2 );
+               $nPlus = Quantifier::plus( $n );
+               $this->ruleSanitizers = [
+                       new FontFeatureValueAtRuleSanitizer( 'stylistic', $n ),
+                       new FontFeatureValueAtRuleSanitizer( 'styleset', $nPlus ),
+                       new FontFeatureValueAtRuleSanitizer( 'character-variant', $n2 ),
+                       new FontFeatureValueAtRuleSanitizer( 'swash', $n ),
+                       new FontFeatureValueAtRuleSanitizer( 'ornaments', $n ),
+                       new FontFeatureValueAtRuleSanitizer( 'annotation', $n ),
+               ];
+       }
+
+       public function handlesRule( Rule $rule ) {
+               return $rule instanceof AtRule && !strcasecmp( $rule->getName(), 'font-feature-values' );
+       }
+
+       protected function doSanitize( CSSObject $object ) {
+               if ( !$object instanceof Rule || !$this->handlesRule( $object ) ) {
+                       $this->sanitizationError( 'expected-at-rule', $object, [ 'font-feature-values' ] );
+                       return null;
+               }
+
+               if ( $object->getBlock() === null ) {
+                       $this->sanitizationError( 'at-rule-block-required', $object, [ 'font-feature-values' ] );
+                       return null;
+               }
+
+               // Test the page selector
+               if ( !$this->fontListMatcher->match( $object->getPrelude(), [ 'mark-significance' => true ] ) ) {
+                       $cv = Util::findFirstNonWhitespace( $object->getPrelude() );
+                       if ( $cv ) {
+                               $this->sanitizationError( 'invalid-font-feature-values-font-list', $cv );
+                       } else {
+                               $this->sanitizationError( 'missing-font-feature-values-font-list', $object );
+                       }
+                       return null;
+               }
+
+               $ret = clone( $object );
+               $this->fixPreludeWhitespace( $ret, false );
+               $this->sanitizeRuleBlock( $ret->getBlock(), $this->ruleSanitizers );
+
+               return $ret;
+       }
+}