Introduce a named constant for the ".git" directory extension

Change-Id: Icfe9205994c6810fcd880054a586e9eef29df9a1
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>

org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java

@@ -311,6 +311,9 @@ public final class Constants {
 	/** Default name for the Git repository directory */
 	public static final String DOT_GIT = ".git";
 
+	/** A bare repository typically ends with this string */
+	public static final String DOT_GIT_EXT = ".git";
+
 	/**
 	 * Create a new digest function for objects.
 	 *

org.eclipse.jgit/src/org/eclipse/jgit/lib/RepositoryCache.java

@@ -382,8 +382,8 @@ public static File resolve(final File directory) {
 
 			final String name = directory.getName();
 			final File parent = directory.getParentFile();
-			if (isGitRepository(new File(parent, name + ".git")))
-				return new File(parent, name + ".git");
+			if (isGitRepository(new File(parent, name + Constants.DOT_GIT_EXT)))
+				return new File(parent, name + Constants.DOT_GIT_EXT);
 			return null;
 		}
 	}

org.eclipse.jgit/src/org/eclipse/jgit/transport/Daemon.java

@@ -57,6 +57,7 @@
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CopyOnWriteArrayList;
 
+import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.PersonIdent;
 import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.lib.RepositoryCache;
@@ -204,8 +205,8 @@ public void setExportAll(final boolean export) {
 	 *            the repository instance.
 	 */
 	public void exportRepository(String name, final Repository db) {
-		if (!name.endsWith(".git"))
-			name = name + ".git";
+		if (!name.endsWith(Constants.DOT_GIT_EXT))
+			name = name + Constants.DOT_GIT_EXT;
 		exports.put(name, db);
 		RepositoryCache.register(db);
 	}
@@ -358,7 +359,8 @@ Repository openRepository(String name) {
 		name = name.substring(1);
 
 		Repository db;
-		db = exports.get(name.endsWith(".git") ? name : name + ".git");
+		db = exports.get(name.endsWith(Constants.DOT_GIT_EXT) ? name : name
+				+ Constants.DOT_GIT_EXT);
 		if (db != null) {
 			db.incrementOpen();
 			return db;

org.eclipse.jgit/src/org/eclipse/jgit/transport/URIish.java

@@ -410,8 +410,9 @@ public String getHumanishName() throws IllegalArgumentException {
 		String result = elements[elements.length - 1];
 		if (Constants.DOT_GIT.equals(result))
 			result = elements[elements.length - 2];
-		else if (result.endsWith(DOT_GIT))
-			result = result.substring(0, result.length() - DOT_GIT.length());
+		else if (result.endsWith(Constants.DOT_GIT_EXT))
+			result = result.substring(0, result.length()
+					- Constants.DOT_GIT_EXT.length());
 		return result;
 	}