Merge "Check assume unchanged flag in Add command"

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

@@ -456,6 +456,38 @@ public class AddCommandTest extends RepositoryTestCase {
 				indexState(CONTENT));
 	}
 
+	public void testAssumeUnchanged() throws Exception {
+		Git git = new Git(db);
+		String path = "a.txt";
+		writeTrashFile(path, "content");
+		git.add().addFilepattern(path).call();
+		String path2 = "b.txt";
+		writeTrashFile(path2, "content");
+		git.add().addFilepattern(path2).call();
+		git.commit().setMessage("commit").call();
+		assertEquals("[a.txt, mode:100644, content:"
+				+ "content, assume-unchanged:false]"
+				+ "[b.txt, mode:100644, content:content, "
+				+ "assume-unchanged:false]", indexState(CONTENT
+				| ASSUME_UNCHANGED));
+		assumeUnchanged(path2);
+		assertEquals("[a.txt, mode:100644, content:content, "
+				+ "assume-unchanged:false][b.txt, mode:100644, "
+				+ "content:content, assume-unchanged:true]", indexState(CONTENT
+				| ASSUME_UNCHANGED));
+		writeTrashFile(path, "more content");
+		writeTrashFile(path2, "more content");
+
+		git.add().addFilepattern(".").call();
+
+		assertEquals("[a.txt, mode:100644, content:more content,"
+				+ " assume-unchanged:false][b.txt, mode:100644,"
+ + "" + ""
+				+ " content:content, assume-unchanged:true]",
+				indexState(CONTENT
+				| ASSUME_UNCHANGED));
+	}
+
 	private DirCacheEntry addEntryToBuilder(String path, File file,
 			ObjectInserter newObjectInserter, DirCacheBuilder builder, int stage)
 			throws IOException {
@@ -473,4 +505,14 @@ public class AddCommandTest extends RepositoryTestCase {
 		return entry;
 	}
 
+	private void assumeUnchanged(String path) throws IOException {
+		final DirCache dirc = db.lockDirCache();
+		final DirCacheEntry ent = dirc.getEntry(path);
+		if (ent != null)
+			ent.setAssumeValid(true);
+		dirc.write();
+		if (!dirc.commit())
+			throw new IOException("could not commit");
+	}
+
 }

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

@@ -138,6 +138,8 @@ public abstract class RepositoryTestCase extends LocalDiskRepositoryTestCase {
 
 	public static final int CONTENT = 16;
 
+	public static final int ASSUME_UNCHANGED = 32;
+
 	/**
 	 * Represent the state of the index in one String. This representation is
 	 * useful when writing tests which do assertions on the state of the index.
@@ -209,6 +211,9 @@ public abstract class RepositoryTestCase extends LocalDiskRepositoryTestCase {
 						+ new String(db.open(entry.getObjectId(),
 								Constants.OBJ_BLOB).getCachedBytes(), "UTF-8"));
 			}
+			if (0 != (includedOptions & ASSUME_UNCHANGED))
+				sb.append(", assume-unchanged:"
+						+ Boolean.toString(entry.isAssumeValid()));
 			sb.append("]");
 		}
 		return sb.toString();

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

@@ -163,25 +163,31 @@ public class AddCommand extends GitCommand<DirCache> {
 				// new DirCacheEntry per path.
 				else if (!(path.equals(lastAddedFile))) {
 					if (!(update && tw.getTree(0, DirCacheIterator.class) == null)) {
+						c = tw.getTree(0, DirCacheIterator.class);
 						if (f != null) { // the file exists
 							long sz = f.getEntryLength();
 							DirCacheEntry entry = new DirCacheEntry(path);
-							entry.setLength(sz);
-							entry.setLastModified(f.getEntryLastModified());
-							entry.setFileMode(f.getEntryFileMode());
-
-							InputStream in = f.openEntryStream();
-							try {
-								entry.setObjectId(inserter.insert(
-										Constants.OBJ_BLOB, sz, in));
-							} finally {
-								in.close();
+							if (c == null || c.getDirCacheEntry() == null
+									|| !c.getDirCacheEntry().isAssumeValid()) {
+								entry.setLength(sz);
+								entry.setLastModified(f.getEntryLastModified());
+								entry.setFileMode(f.getEntryFileMode());
+
+								InputStream in = f.openEntryStream();
+								try {
+									entry.setObjectId(inserter.insert(
+											Constants.OBJ_BLOB, sz, in));
+								} finally {
+									in.close();
+								}
+
+								builder.add(entry);
+								lastAddedFile = path;
+							} else {
+								builder.add(c.getDirCacheEntry());
 							}
 
-							builder.add(entry);
-							lastAddedFile = path;
 						} else if (!update){
-							c = tw.getTree(0, DirCacheIterator.class);
 							builder.add(c.getDirCacheEntry());
 						}
 					}