Fix path filtering in LogCommand

Bug: 346257
Change-Id: Ib897e1b4962162da9670164479a844aeea7dfcd1
Signed-off-by: Piotr Janik <janikpiotrek@gmail.com>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>

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

@@ -50,7 +50,6 @@ import static org.junit.Assert.fail;
 import java.io.File;
 import java.io.IOException;
 import java.io.PrintWriter;
-
 import org.eclipse.jgit.api.errors.ConcurrentRefUpdateException;
 import org.eclipse.jgit.api.errors.JGitInternalException;
 import org.eclipse.jgit.api.errors.NoFilepatternException;
@@ -112,6 +111,60 @@ public class CommitAndLogCommandTests extends RepositoryTestCase {
 		assertTrue(reader.getLastEntry().getComment().startsWith("commit:"));
 	}
 
+	@Test
+	public void testLogWithFilter() throws IOException, NoFilepatternException,
+			NoHeadException, NoMessageException, ConcurrentRefUpdateException,
+			JGitInternalException, WrongRepositoryStateException {
+
+		Git git = new Git(db);
+
+		// create first file
+		File file = new File(db.getWorkTree(), "a.txt");
+		FileUtils.createNewFile(file);
+		PrintWriter writer = new PrintWriter(file);
+		writer.print("content1");
+		writer.close();
+
+		// First commit - a.txt file
+		git.add().addFilepattern("a.txt").call();
+		git.commit().setMessage("commit1").setCommitter(committer).call();
+
+		// create second file
+		file = new File(db.getWorkTree(), "b.txt");
+		FileUtils.createNewFile(file);
+		writer = new PrintWriter(file);
+		writer.print("content2");
+		writer.close();
+
+		// Second commit - b.txt file
+		git.add().addFilepattern("b.txt").call();
+		git.commit().setMessage("commit2").setCommitter(committer).call();
+
+		// First log - a.txt filter
+		int count = 0;
+		for (RevCommit c : git.log().addPath("a.txt").call()) {
+			assertEquals("commit1", c.getFullMessage());
+			count++;
+		}
+		assertEquals(1, count);
+
+		// Second log - b.txt filter
+		count = 0;
+		for (RevCommit c : git.log().addPath("b.txt").call()) {
+			assertEquals("commit2", c.getFullMessage());
+			count++;
+		}
+		assertEquals(1, count);
+
+		// Third log - without filter
+		count = 0;
+		for (RevCommit c : git.log().call()) {
+			assertEquals(committer, c.getCommitterIdent());
+			count++;
+		}
+		assertEquals(2, count);
+	}
+
 	// try to do a commit without specifying a message. Should fail!
 	@Test
 	public void testWrongParams() throws UnmergedPathException,

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

@@ -58,8 +58,10 @@ import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.revwalk.RevWalk;
+import org.eclipse.jgit.treewalk.filter.AndTreeFilter;
 import org.eclipse.jgit.treewalk.filter.PathFilter;
 import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
+import org.eclipse.jgit.treewalk.filter.TreeFilter;
 
 /**
  * A class used to execute a {@code Log} command. It has setters for all
@@ -103,7 +105,8 @@ public class LogCommand extends GitCommand<Iterable<RevCommit>> {
 			JGitInternalException {
 		checkCallable();
 		if (pathFilters.size() > 0)
-			walk.setTreeFilter(PathFilterGroup.create(pathFilters));
+			walk.setTreeFilter(AndTreeFilter.create(
+					PathFilterGroup.create(pathFilters), TreeFilter.ANY_DIFF));
 		if (!startSpecified) {
 			try {
 				ObjectId headId = repo.resolve(Constants.HEAD);