Add getters for old and new prefixes in DiffFormatter

Bug: 370318
Change-Id: Iaf9282ba55ee3bb4e2c27fb71c598b308771bf57

org.eclipse.jgit/src/org/eclipse/jgit/diff/DiffFormatter.java

@@ -274,6 +274,15 @@ public class DiffFormatter {
 		oldPrefix = prefix;
 	}
 
+	/**
+	 * Get the prefix applied in front of old file paths.
+	 *
+	 * @return the prefix
+	 */
+	public String getOldPrefix() {
+		return this.oldPrefix;
+	}
+
 	/**
 	 * Set the prefix applied in front of new file paths.
 	 *
@@ -287,6 +296,15 @@ public class DiffFormatter {
 		newPrefix = prefix;
 	}
 
+	/**
+	 * Get the prefix applied in front of new file paths.
+	 *
+	 * @return the prefix
+	 */
+	public String getNewPrefix() {
+		return this.newPrefix;
+	}
+
 	/** @return true if rename detection is enabled. */
 	public boolean isDetectRenames() {
 		return renameDetector != null;