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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Edit; |
| 4 | |
| 5 | use InvalidArgumentException; |
| 6 | use MediaWiki\Parser\ParserOutput; |
| 7 | use Stringable; |
| 8 | use function count; |
| 9 | |
| 10 | /** |
| 11 | * Represents the identity of a specific rendering of a specific revision |
| 12 | * at some point in time. |
| 13 | * |
| 14 | * @since 1.39 |
| 15 | * @unstable since 1.39, should be stable by 1.39 release. |
| 16 | */ |
| 17 | class ParsoidRenderID implements Stringable { |
| 18 | private int $revisionID; |
| 19 | private string $uniqueID; |
| 20 | private string $stashKey; |
| 21 | |
| 22 | /** |
| 23 | * @param int $revisionID Revision that was rendered |
| 24 | * @param string $uniqueID An identifier for a point in time. |
| 25 | */ |
| 26 | public function __construct( int $revisionID, string $uniqueID ) { |
| 27 | $this->revisionID = $revisionID; |
| 28 | $this->uniqueID = $uniqueID; |
| 29 | $this->stashKey = $revisionID . '/' . $uniqueID; |
| 30 | } |
| 31 | |
| 32 | /** |
| 33 | * @param string $key String representation of render ID |
| 34 | * (synonymous with an etag with double quotes) as returned by ::getKey(). |
| 35 | * |
| 36 | * @return self |
| 37 | * @see newFromETag() |
| 38 | */ |
| 39 | public static function newFromKey( string $key ): self { |
| 40 | $parts = explode( '/', $key, 2 ); |
| 41 | |
| 42 | if ( count( $parts ) < 2 ) { |
| 43 | throw new InvalidArgumentException( 'Bad key: ' . $key ); |
| 44 | } |
| 45 | |
| 46 | [ $revisionID, $uniqueID ] = $parts; |
| 47 | |
| 48 | return new self( (int)$revisionID, $uniqueID ); |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Create a ParsoidRenderID from the revision and render id stored in |
| 53 | * a ParserOutput. |
| 54 | * @param ParserOutput $parserOutput |
| 55 | * @return self |
| 56 | */ |
| 57 | public static function newFromParserOutput( ParserOutput $parserOutput ): self { |
| 58 | $revisionID = $parserOutput->getCacheRevisionId(); |
| 59 | $uniqueID = $parserOutput->getRenderId(); |
| 60 | |
| 61 | if ( $revisionID === null || $uniqueID === null ) { |
| 62 | throw new InvalidArgumentException( 'Missing render id' ); |
| 63 | } |
| 64 | |
| 65 | return new self( $revisionID, $uniqueID ); |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * This constructs a new render ID from the given ETag. |
| 70 | * |
| 71 | * Any suffix after a second forward slash will be ignored e.g. |
| 72 | * ->newFromEtag( '1/abc/stash' ) will return '1/abc' when ->getKey() |
| 73 | * is called on the ParsoidRenderID object instance. |
| 74 | * |
| 75 | * @param string $eTag ETag with double quotes, |
| 76 | * see https://www.rfc-editor.org/rfc/rfc7232#section-2.3 |
| 77 | * |
| 78 | * @return self|null The render ID embedded in the ETag, |
| 79 | * or null if the ETag was malformed. |
| 80 | * @see newFromKey() if ETag already has outside quotes trimmed |
| 81 | */ |
| 82 | public static function newFromETag( string $eTag ): ?self { |
| 83 | if ( !preg_match( '@^(?:W/)?"(\d+)/([^/]+)(:?/.*)?"$@', $eTag, $m ) ) { |
| 84 | return null; |
| 85 | } |
| 86 | |
| 87 | [ , $revisionID, $uniqueID ] = $m; |
| 88 | |
| 89 | return new self( (int)$revisionID, $uniqueID ); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * This returns the canonical string representation from |
| 94 | * the parsoid render ID which can be used to in newFromString(). |
| 95 | */ |
| 96 | public function getKey(): string { |
| 97 | return $this->stashKey; |
| 98 | } |
| 99 | |
| 100 | public function __toString() { |
| 101 | return $this->stashKey; |
| 102 | } |
| 103 | |
| 104 | /** |
| 105 | * Get the revision ID from the parsoid render ID object. |
| 106 | */ |
| 107 | public function getRevisionID(): int { |
| 108 | return $this->revisionID; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * Get the unique identifier from the parsoid render ID object. |
| 113 | */ |
| 114 | public function getUniqueID(): string { |
| 115 | return $this->uniqueID; |
| 116 | } |
| 117 | |
| 118 | } |
| 119 | |
| 120 | /** @deprecated class alias since 1.42 */ |
| 121 | class_alias( ParsoidRenderID::class, 'MediaWiki\\Parser\\Parsoid\\ParsoidRenderID' ); |