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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\Html2Wt\ConstrainedText; |
| 5 | |
| 6 | /** |
| 7 | * This subclass allows specification of a regular expression for |
| 8 | * acceptable (or prohibited) leading (and/or trailing) contexts. |
| 9 | * |
| 10 | * This is an abstract class; it's intended to be subclassed, not |
| 11 | * used directly, and so it not included in the lists of types |
| 12 | * tried by `fromSelSer`. |
| 13 | */ |
| 14 | abstract class RegExpConstrainedText extends ConstrainedText { |
| 15 | /** @var \Closure(string):bool */ |
| 16 | public $prefixMatcher; |
| 17 | /** @var \Closure(string):bool */ |
| 18 | public $suffixMatcher; |
| 19 | |
| 20 | /** |
| 21 | * @param array $args |
| 22 | */ |
| 23 | protected function __construct( array $args ) { |
| 24 | parent::__construct( $args ); |
| 25 | $this->prefix ??= '<nowiki/>'; |
| 26 | $this->suffix ??= '<nowiki/>'; |
| 27 | // functions which return true if escape prefix/suffix need to be added |
| 28 | $matcher = static function ( string $re, bool $invert ): callable { |
| 29 | return ( static function ( string $context ) use ( $re, $invert ): bool { |
| 30 | return ( preg_match( $re, $context ) ) ? !$invert : $invert; |
| 31 | } ); |
| 32 | }; |
| 33 | $false = static function ( string $context ): bool { |
| 34 | return false; |
| 35 | }; |
| 36 | $this->prefixMatcher = |
| 37 | ( $args['goodPrefix'] ?? false ) ? |
| 38 | $matcher( $args['goodPrefix'], true ) : |
| 39 | ( ( $args['badPrefix'] ?? false ) ? |
| 40 | $matcher( $args['badPrefix'], false ) : $false ); |
| 41 | $this->suffixMatcher = |
| 42 | ( $args['goodSuffix'] ?? false ) ? |
| 43 | $matcher( $args['goodSuffix'], true ) : |
| 44 | ( ( $args['badSuffix'] ?? false ) ? |
| 45 | $matcher( $args['badSuffix'], false ) : $false ); |
| 46 | } |
| 47 | |
| 48 | /** @inheritDoc */ |
| 49 | public function escape( State $state ): Result { |
| 50 | $result = new Result( $this->text ); |
| 51 | if ( call_user_func( $this->prefixMatcher, $state->leftContext ) ) { |
| 52 | $result->prefix = $this->prefix; |
| 53 | } |
| 54 | if ( call_user_func( $this->suffixMatcher, $state->rightContext ) ) { |
| 55 | $result->suffix = $this->suffix; |
| 56 | } |
| 57 | return $result; |
| 58 | } |
| 59 | } |