X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=includes%2FStorage%2FRevisionSlots.php;h=91969fc0c7c548c4838adb81a7294da95009238c;hb=a075271157d32567e894c668aa2b76138c491b95;hp=f37e722bbaa346f446bc2bc5ed56b56b22a70ac0;hpb=e8632ab0f6264851d2115a2e6338c2074b9a9b8c;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/Storage/RevisionSlots.php b/includes/Storage/RevisionSlots.php
index f37e722bba..91969fc0c7 100644
--- a/includes/Storage/RevisionSlots.php
+++ b/includes/Storage/RevisionSlots.php
@@ -139,7 +139,7 @@ class RevisionSlots {
 	/**
 	 * Computes the total nominal size of the revision's slots, in bogo-bytes.
 	 *
-	 * @warn This is potentially expensive! It may cause all slot's content to be loaded
+	 * @warning This is potentially expensive! It may cause all slot's content to be loaded
 	 * and deserialized.
 	 *
 	 * @return int
@@ -181,7 +181,7 @@ class RevisionSlots {
 	 * is that slot's hash. For consistency, the combined hash of an empty set of slots
 	 * is the hash of the empty string.
 	 *
-	 * @warn This is potentially expensive! It may cause all slot's content to be loaded
+	 * @warning This is potentially expensive! It may cause all slot's content to be loaded
 	 * and deserialized, then re-serialized and hashed.
 	 *
 	 * @return string
@@ -270,4 +270,43 @@ class RevisionSlots {
 		return true;
 	}
 
+	/**
+	 * Find roles for which the $other RevisionSlots object has different content
+	 * as this RevisionSlots object, including any roles that are present in one
+	 * but not the other.
+	 *
+	 * @param RevisionSlots $other
+	 *
+	 * @return string[] a list of slot roles that are different.
+	 */
+	public function getRolesWithDifferentContent( RevisionSlots $other ) {
+		if ( $other === $this ) {
+			return [];
+		}
+
+		$aSlots = $this->getSlots();
+		$bSlots = $other->getSlots();
+
+		ksort( $aSlots );
+		ksort( $bSlots );
+
+		$different = array_keys( array_merge(
+			array_diff_key( $aSlots, $bSlots ),
+			array_diff_key( $bSlots, $aSlots )
+		) );
+
+		/** @var SlotRecord[] $common */
+		$common = array_intersect_key( $aSlots, $bSlots );
+
+		foreach ( $common as $role => $s ) {
+			$t = $bSlots[$role];
+
+			if ( !$s->hasSameContent( $t ) ) {
+				$different[] = $role;
+			}
+		}
+
+		return $different;
+	}
+
 }