Allow for filepattern "." in AddCommand

Enable adding on repository root level.

Change-Id: I415b10dc74cc9435578424d9f106c972fd703055
Signed-off-by: Stefan Lay <stefan.lay@sap.com>

org.eclipse.jgit.test/tst/org/eclipse/jgit/api/AddCommandTest.java

@@ -338,6 +338,26 @@ public class AddCommandTest extends RepositoryTestCase {
 		assertEquals(0, dc.getEntry("sub/a.txt").getStage());
 	}
 
+	public void testAddWholeRepo() throws Exception  {
+		new File(db.getWorkDir(), "sub").mkdir();
+		File file = new File(db.getWorkDir(), "sub/a.txt");
+		file.createNewFile();
+		PrintWriter writer = new PrintWriter(file);
+		writer.print("content");
+		writer.close();
+
+		File file2 = new File(db.getWorkDir(), "sub/b.txt");
+		file2.createNewFile();
+		writer = new PrintWriter(file2);
+		writer.print("content b");
+		writer.close();
+
+		Git git = new Git(db);
+		DirCache dc = git.add().addFilepattern(".").call();
+		assertEquals("sub/a.txt", dc.getEntry("sub/a.txt").getPathString());
+		assertEquals("sub/b.txt", dc.getEntry("sub/b.txt").getPathString());
+	}
+
 	private DirCacheEntry addEntryToBuilder(String path, File file,
 			ObjectWriter ow, DirCacheBuilder builder, int stage)
 			throws IOException {

org.eclipse.jgit/src/org/eclipse/jgit/api/AddCommand.java

@@ -109,6 +109,9 @@ public class AddCommand extends GitCommand<DirCache> {
 			throw new NoFilepatternException(JGitText.get().atLeastOnePatternIsRequired);
 		checkCallable();
 		DirCache dc = null;
+		boolean addAll = false;
+		if (filepatterns.contains("."))
+			addAll = true;
 
 		try {
 			dc = DirCache.lock(repo);
@@ -122,7 +125,8 @@ public class AddCommand extends GitCommand<DirCache> {
 			FileTreeIterator fileTreeIterator = new FileTreeIterator(repo);
 			tw.addTree(fileTreeIterator);
 			tw.setRecursive(true);
-			tw.setFilter(PathFilterGroup.createFromStrings(filepatterns));
+			if (!addAll)
+				tw.setFilter(PathFilterGroup.createFromStrings(filepatterns));
 
 			String lastAddedFile = null;