1 files changed, 44 insertions, 0 deletions
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/StringUtils.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/StringUtils.java
index 119c041570..3759a12820 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/util/StringUtils.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/StringUtils.java
@@ -44,6 +44,7 @@
 package org.eclipse.jgit.util;
 
 import java.text.MessageFormat;
+import java.util.Collection;
 
 import org.eclipse.jgit.JGitText;
 
@@ -158,6 +159,49 @@ public final class StringUtils {
 		}
 	}
 
+	/**
+	 * Join a collection of Strings together using the specified separator.
+	 *
+	 * @param parts
+	 *            Strings to join
+	 * @param separator
+	 *            used to join
+	 * @return a String with all the joined parts
+	 */
+	public static String join(Collection<String> parts, String separator) {
+		return StringUtils.join(parts, separator, separator);
+	}
+
+	/**
+	 * Join a collection of Strings together using the specified separator and a
+	 * lastSeparator which is used for joining the second last and the last
+	 * part.
+	 *
+	 * @param parts
+	 *            Strings to join
+	 * @param separator
+	 *            separator used to join all but the two last elements
+	 * @param lastSeparator
+	 *            separator to use for joining the last two elements
+	 * @return a String with all the joined parts
+	 */
+	public static String join(Collection<String> parts, String separator,
+			String lastSeparator) {
+		StringBuilder sb = new StringBuilder();
+		int i = 0;
+		int lastIndex = parts.size() - 1;
+		for (String part : parts) {
+			sb.append(part);
+			if (i == lastIndex - 1) {
+				sb.append(lastSeparator);
+			} else if (i != lastIndex) {
+				sb.append(separator);
+			}
+			i++;
+		}
+		return sb.toString();
+	}
+
 	private StringUtils() {
 		// Do not create instances
 	}