Merge "Fix IndexDiffs for git links"

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

@@ -1245,7 +1245,8 @@ public class AddCommandTest extends RepositoryTestCase {
 				ConfigConstants.CONFIG_KEY_DIRNOGITLINKS, true);
 		config.save();
 
-		assert (db.getConfig().get(WorkingTreeOptions.KEY).isDirNoGitLinks());
+		assertTrue(
+				db.getConfig().get(WorkingTreeOptions.KEY).isDirNoGitLinks());
 
 		try (Git git = new Git(db)) {
 			git.add().addFilepattern("nested-repo").call();

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

@@ -233,6 +233,27 @@ public class CleanCommandTest extends RepositoryTestCase {
 		assertTrue(cleanedFiles.contains("ignored-dir/"));
 	}
 
+	@Test
+	public void testCleanDirsWithPrefixFolder() throws Exception {
+		String path = "sub/foo.txt";
+		writeTrashFile(path, "sub is a prefix of sub-noclean");
+		git.add().addFilepattern(path).call();
+		Status beforeCleanStatus = git.status().call();
+		assertTrue(beforeCleanStatus.getAdded().contains(path));
+
+		Set<String> cleanedFiles = git.clean().setCleanDirectories(true).call();
+
+		// The "sub" directory should not be cleaned.
+		assertTrue(!cleanedFiles.contains(path + "/"));
+
+		assertTrue(cleanedFiles.contains("File2.txt"));
+		assertTrue(cleanedFiles.contains("File3.txt"));
+		assertTrue(!cleanedFiles.contains("sub-noclean/File1.txt"));
+		assertTrue(cleanedFiles.contains("sub-noclean/File2.txt"));
+		assertTrue(cleanedFiles.contains("sub-clean/"));
+		assertTrue(cleanedFiles.size() == 4);
+	}
+
 	@Test
 	public void testCleanDirsWithSubmodule() throws Exception {
 		SubmoduleAddCommand command = new SubmoduleAddCommand(db);

org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/IndexDiffSubmoduleTest.java

@@ -51,6 +51,7 @@ import java.io.File;
 import java.io.IOException;
 import java.util.Set;
 
+import org.eclipse.jgit.api.CloneCommand;
 import org.eclipse.jgit.api.Git;
 import org.eclipse.jgit.api.errors.GitAPIException;
 import org.eclipse.jgit.errors.NoWorkTreeException;
@@ -109,6 +110,58 @@ public class IndexDiffSubmoduleTest extends RepositoryTestCase {
 		assertFalse(indexDiff.diff());
 	}
 
+	private Repository cloneWithoutCloningSubmodule() throws Exception {
+		File directory = createTempDirectory(
+				"testCloneWithoutCloningSubmodules");
+		CloneCommand clone = Git.cloneRepository();
+		clone.setDirectory(directory);
+		clone.setCloneSubmodules(false);
+		clone.setURI(db.getDirectory().toURI().toString());
+		Git git2 = clone.call();
+		addRepoToClose(git2.getRepository());
+		return git2.getRepository();
+	}
+
+	@Theory
+	public void testCleanAfterClone(IgnoreSubmoduleMode mode) throws Exception {
+		Repository db2 = cloneWithoutCloningSubmodule();
+		IndexDiff indexDiff = new IndexDiff(db2, Constants.HEAD,
+				new FileTreeIterator(db2));
+		indexDiff.setIgnoreSubmoduleMode(mode);
+		assertFalse(indexDiff.diff());
+	}
+
+	@Theory
+	public void testMissingIfDirectoryGone(IgnoreSubmoduleMode mode)
+			throws Exception {
+		recursiveDelete(submodule_trash);
+		IndexDiff indexDiff = new IndexDiff(db, Constants.HEAD,
+				new FileTreeIterator(db));
+		indexDiff.setIgnoreSubmoduleMode(mode);
+		boolean hasChanges = indexDiff.diff();
+		if (mode != IgnoreSubmoduleMode.ALL) {
+			assertTrue(hasChanges);
+			assertEquals("[modules/submodule]",
+					indexDiff.getMissing().toString());
+		} else {
+			assertFalse(hasChanges);
+		}
+	}
+
+	@Theory
+	public void testSubmoduleReplacedByFile(IgnoreSubmoduleMode mode)
+			throws Exception {
+		recursiveDelete(submodule_trash);
+		writeTrashFile("modules/submodule", "nonsense");
+		IndexDiff indexDiff = new IndexDiff(db, Constants.HEAD,
+				new FileTreeIterator(db));
+		indexDiff.setIgnoreSubmoduleMode(mode);
+		assertTrue(indexDiff.diff());
+		assertEquals("[]", indexDiff.getMissing().toString());
+		assertEquals("[]", indexDiff.getUntracked().toString());
+		assertEquals("[modules/submodule]", indexDiff.getModified().toString());
+	}
+
 	@Theory
 	public void testDirtyRootWorktree(IgnoreSubmoduleMode mode)
 			throws IOException {

org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/IndexDiffTest.java

@@ -118,6 +118,28 @@ public class IndexDiffTest extends RepositoryTestCase {
 		assertEquals(Collections.EMPTY_SET, diff.getUntrackedFolders());
 	}
 
+	@Test
+	public void testMissing() throws Exception {
+		File file2 = writeTrashFile("file2", "file2");
+		File file3 = writeTrashFile("dir/file3", "dir/file3");
+		Git git = Git.wrap(db);
+		git.add().addFilepattern("file2").addFilepattern("dir/file3").call();
+		git.commit().setMessage("commit").call();
+		assertTrue(file2.delete());
+		assertTrue(file3.delete());
+		IndexDiff diff = new IndexDiff(db, Constants.HEAD,
+				new FileTreeIterator(db));
+		diff.diff();
+		assertEquals(2, diff.getMissing().size());
+		assertTrue(diff.getMissing().contains("file2"));
+		assertTrue(diff.getMissing().contains("dir/file3"));
+		assertEquals(0, diff.getChanged().size());
+		assertEquals(0, diff.getModified().size());
+		assertEquals(0, diff.getAdded().size());
+		assertEquals(0, diff.getRemoved().size());
+		assertEquals(Collections.EMPTY_SET, diff.getUntrackedFolders());
+	}
+
 	@Test
 	public void testRemoved() throws IOException {
 		writeTrashFile("file2", "file2");

org.eclipse.jgit.test/tst/org/eclipse/jgit/util/PathsTest.java

@@ -88,15 +88,30 @@ public class PathsTest {
 		assertEquals(0, compare(
 				a, 0, a.length, FileMode.TREE.getBits(),
 				b, 0, b.length, FileMode.TREE.getBits()));
+		assertEquals(0, compare(
+				a, 0, a.length, FileMode.TREE.getBits(),
+				b, 0, b.length, FileMode.GITLINK.getBits()));
+		assertEquals(0, compare(
+				a, 0, a.length, FileMode.GITLINK.getBits(),
+				b, 0, b.length, FileMode.GITLINK.getBits()));
+		assertEquals(0, compare(
+				a, 0, a.length, FileMode.GITLINK.getBits(),
+				b, 0, b.length, FileMode.TREE.getBits()));
 		assertEquals(0, compare(
 				a, 0, a.length, FileMode.REGULAR_FILE.getBits(),
 				b, 0, b.length, FileMode.REGULAR_FILE.getBits()));
 		assertEquals(-47, compare(
 				a, 0, a.length, FileMode.REGULAR_FILE.getBits(),
 				b, 0, b.length, FileMode.TREE.getBits()));
+		assertEquals(0, compare(
+				a, 0, a.length, FileMode.REGULAR_FILE.getBits(),
+				b, 0, b.length, FileMode.GITLINK.getBits()));
 		assertEquals(47, compare(
 				a, 0, a.length, FileMode.TREE.getBits(),
 				b, 0, b.length, FileMode.REGULAR_FILE.getBits()));
+		assertEquals(0, compare(
+				a, 0, a.length, FileMode.GITLINK.getBits(),
+				b, 0, b.length, FileMode.REGULAR_FILE.getBits()));
 
 		assertEquals(0, compareSameName(
 				a, 0, a.length,
@@ -104,6 +119,9 @@ public class PathsTest {
 		assertEquals(0, compareSameName(
 				a, 0, a.length,
 				b, 0, b.length, FileMode.REGULAR_FILE.getBits()));
+		assertEquals(0, compareSameName(
+				a, 0, a.length,
+				b, 0, b.length, FileMode.GITLINK.getBits()));
 
 		a = Constants.encode("a.c");
 		b = Constants.encode("a");

org.eclipse.jgit/src/org/eclipse/jgit/treewalk/WorkingTreeIterator.java

@@ -1045,7 +1045,7 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 			}
 		}
 		if (FileMode.GITLINK == iMode
-				&& FileMode.TREE == wtMode) {
+				&& FileMode.TREE == wtMode && !getOptions().isDirNoGitLinks()) {
 			return iMode;
 		}
 		if (FileMode.TREE == iMode

org.eclipse.jgit/src/org/eclipse/jgit/util/Paths.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2016, Google Inc.
+ * Copyright (C) 2016, 2018 Google Inc.
  * and other copyright owners as documented in the project's IP log.
  *
  * This program and the accompanying materials are made available
@@ -43,6 +43,7 @@
 
 package org.eclipse.jgit.util;
 
+import static org.eclipse.jgit.lib.FileMode.TYPE_GITLINK;
 import static org.eclipse.jgit.lib.FileMode.TYPE_MASK;
 import static org.eclipse.jgit.lib.FileMode.TYPE_TREE;
 
@@ -106,7 +107,7 @@ public class Paths {
 				aPath, aPos, aEnd, aMode,
 				bPath, bPos, bEnd, bMode);
 		if (cmp == 0) {
-			cmp = lastPathChar(aMode) - lastPathChar(bMode);
+			cmp = modeCompare(aMode, bMode);
 		}
 		return cmp;
 	}
@@ -183,6 +184,15 @@ public class Paths {
 		return 0;
 	}
 
+	private static int modeCompare(int aMode, int bMode) {
+		if ((aMode & TYPE_MASK) == TYPE_GITLINK
+				|| (bMode & TYPE_MASK) == TYPE_GITLINK) {
+			// Git links can be equal to files or folders
+			return 0;
+		}
+		return lastPathChar(aMode) - lastPathChar(bMode);
+	}
+
 	private Paths() {
 	}
 }