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https://github.com/smogon/pokemon-showdown-client.git
synced 2026-04-26 18:18:46 -05:00
84 lines
2.5 KiB
PHP
84 lines
2.5 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\Matcher;
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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\ComponentValueList;
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use Wikimedia\CSS\Objects\DeclarationList;
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use Wikimedia\CSS\Objects\Rule;
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use Wikimedia\CSS\Parser\Parser;
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use Wikimedia\CSS\Util;
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/**
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* Sanitizes a feature-value at-rule inside a CSS \@font-feature-values rule
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* @see https://www.w3.org/TR/2013/CR-css-fonts-3-20131003/#at-font-feature-values-rule
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*/
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class FontFeatureValueAtRuleSanitizer extends RuleSanitizer {
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/** @var string */
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protected $name;
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/** @var Matcher */
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protected $valueMatcher;
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/**
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* @param string $name
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* @param Matcher $valueMatcher
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*/
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public function __construct( $name, Matcher $valueMatcher ) {
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$this->name = $name;
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$this->valueMatcher = $valueMatcher;
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}
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public function handlesRule( Rule $rule ) {
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return $rule instanceof AtRule && !strcasecmp( $rule->getName(), $this->name );
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}
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protected function doSanitize( CSSObject $object ) {
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if ( !$object instanceof Rule || !$this->handlesRule( $object ) ) {
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$this->sanitizationError( 'expected-at-rule', $object, [ $this->name ] );
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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, [ $this->name ] );
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return null;
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}
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// No non-whitespace prelude allowed
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if ( Util::findFirstNonWhitespace( $object->getPrelude() ) ) {
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$this->sanitizationError( 'invalid-font-feature-value', $object, [ $this->name ] );
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return null;
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}
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$ret = clone( $object );
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$this->fixPreludeWhitespace( $ret, false );
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// Parse the block's contents into a list of declarations, sanitize it,
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// and put it back into the block.
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$blockContents = $ret->getBlock()->getValue();
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$parser = Parser::newFromTokens( $blockContents->toTokenArray() );
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$oldDeclarations = $parser->parseDeclarationList();
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$this->sanitizationErrors = array_merge( $this->sanitizationErrors, $parser->getParseErrors() );
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$newDeclarations = new DeclarationList();
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foreach ( $oldDeclarations as $declaration ) {
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if ( $this->valueMatcher->match( $declaration->getValue(), [ 'mark-significance' => true ] ) ) {
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$newDeclarations->add( $declaration );
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} else {
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$this->sanitizationError( 'invalid-font-feature-value-declaration', $declaration,
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[ $this->name ] );
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}
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}
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$blockContents->clear();
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$blockContents->add( $newDeclarations->toComponentValueArray() );
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return $ret;
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}
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}
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