Code Coverage for /src/src/Utils/CounterType.php

1	<?php
2	declare( strict_types = 1 );
3
4	namespace Wikimedia\Parsoid\Utils;
5
6	enum CounterType: string {
7	case NODE_DATA_ID = 'mw';
8	case ANNOTATION_ABOUT = 'mwa';
9	case TRANSCLUSION_ABOUT = '#mwt';
10
11	/**
12	* Convert a counter to a Base64 encoded string.
13	* Padding is stripped. /,+ are replaced with _,- respectively.
14	* Warning: Max integer is 2^31 - 1 for bitwise operations.
15	* @param int $n
16	* @return string
17	*/
18	private static function counterToBase64( int $n ): string {
19	$str = '';
20	do {
21	$str = chr( $n & 0xff ) . $str;
22	$n >>= 8;
23	} while ( $n > 0 );
24	return rtrim( strtr( base64_encode( $str ), '+/', '-_' ), '=' );
25	}
26
27	public function counterToId( int $counter ): string {
28	if ( $this === self::NODE_DATA_ID ) {
29	return $this->value . self::counterToBase64( $counter );
30	} else {
31	return $this->value . $counter;
32	}
33	}
34
35	public function idToCounter( string $id ): ?string {
36	return $this->matches( $id ) ? substr( $id, strlen( $this->value ) ) : null;
37	}
38
39	public function getRE(): string {
40	return $this === self::NODE_DATA_ID ? "mw[\w-]{2,}" : "{$this->value}\d+";
41	}
42
43	public function matches( string $id ): bool {
44	return (bool)preg_match( "/^" . $this->getRE() . "$/D", $id );
45	}
46	}