Removed unread parameters

Some method parameters in WorkingTreeIterator are never used. Remove
them. Especially the removal of the FS parameter in isModified()
simplifies upcoming performance optimizations.

Change-Id: I7c449589283a4a6b6e23f2586cd784febdca8bcd
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>
Signed-off-by: Chris Aniszczyk <caniszczyk@gmail.com>

org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheCheckout.java

@@ -311,8 +311,8 @@ public class DirCacheCheckout {
 		if (m != null) {
 			if (i == null || f == null || !m.idEqual(i)
 					|| (i.getDirCacheEntry() != null && (f.isModified(
-							i.getDirCacheEntry(), true, config_filemode(),
-							repo.getFS()) || i.getDirCacheEntry().getStage() != 0))) {
+							i.getDirCacheEntry(), true, config_filemode()) ||
+							i.getDirCacheEntry().getStage() != 0))) {
 				update(m.getEntryPathString(), m.getEntryObjectId(),
 						m.getEntryFileMode());
 			} else
@@ -575,9 +575,7 @@ public class DirCacheCheckout {
 			case 0xFFD: // 12 13 14
 				if (hId.equals(iId)) {
 					dce = i.getDirCacheEntry();
-					if (f == null
-							|| f.isModified(dce, true, config_filemode(),
-									repo.getFS()))
+					if (f == null || f.isModified(dce, true, config_filemode()))
 						conflict(name, i.getDirCacheEntry(), h, m);
 					else
 						remove(name);
@@ -644,7 +642,7 @@ public class DirCacheCheckout {
 					if (m==null && walk.isDirectoryFileConflict()) {
 						if (dce != null
 								&& (f == null || f.isModified(dce, true,
-										config_filemode(), repo.getFS())))
+										config_filemode())))
 							conflict(name, i.getDirCacheEntry(), h, m);
 						else
 							remove(name);
@@ -666,9 +664,7 @@ public class DirCacheCheckout {
 				 */
 
 				if (hId.equals(iId)) {
-					if (f == null
-							|| f.isModified(dce, true, config_filemode(),
-									repo.getFS()))
+					if (f == null || f.isModified(dce, true, config_filemode()))
 						conflict(name, i.getDirCacheEntry(), h, m);
 					else
 						remove(name);
@@ -680,7 +676,7 @@ public class DirCacheCheckout {
 				else if (hId.equals(iId) && !mId.equals(iId)) {
 					if (dce != null
 							&& (f == null || f.isModified(dce, true,
-									config_filemode(), repo.getFS())))
+									config_filemode())))
 						conflict(name, i.getDirCacheEntry(), h, m);
 					else
 						update(name, mId, m.getEntryFileMode());
@@ -805,7 +801,8 @@ public class DirCacheCheckout {
 			wtIt = tw.getTree(1, WorkingTreeIterator.class);
 			if (dcIt == null || wtIt == null)
 				return true;
-			if (wtIt.isModified(dcIt.getDirCacheEntry(), true, config_filemode(), repo.getFS())) {
+			if (wtIt.isModified(dcIt.getDirCacheEntry(), true,
+					config_filemode())) {
 				return true;
 			}
 		}

org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java

@@ -447,7 +447,7 @@ public class ResolveMerger extends ThreeWayMerger {
 				if (work != null
 						&& (!nonTree(work.getEntryRawMode()) || work
 								.isModified(index.getDirCacheEntry(), true,
-										true, db.getFS()))) {
+										true))) {
 					failingPathes.put(tw.getPathString(),
 							MergeFailureReason.DIRTY_WORKTREE);
 					return false;

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

@@ -70,7 +70,6 @@ import org.eclipse.jgit.ignore.IgnoreRule;
 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.FileMode;
 import org.eclipse.jgit.lib.Repository;
-import org.eclipse.jgit.util.FS;
 import org.eclipse.jgit.util.IO;
 import org.eclipse.jgit.util.io.EolCanonicalizingInputStream;
 
@@ -225,15 +224,15 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 				state.initializeDigestAndReadBuffer();
 
 				final long len = e.getLength();
-				if (!mightNeedCleaning(e))
+				if (!mightNeedCleaning())
 					return computeHash(is, len);
 
 				if (len <= MAXIMUM_FILE_SIZE_TO_READ_FULLY) {
 					ByteBuffer rawbuf = IO.readWholeStream(is, (int) len);
 					byte[] raw = rawbuf.array();
 					int n = rawbuf.limit();
-					if (!isBinary(e, raw, n)) {
-						rawbuf = filterClean(e, raw, n);
+					if (!isBinary(raw, n)) {
+						rawbuf = filterClean(raw, n);
 						raw = rawbuf.array();
 						n = rawbuf.limit();
 					}
@@ -244,14 +243,14 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 					return computeHash(is, len);
 
 				final long canonLen;
-				final InputStream lenIs = filterClean(e, e.openInputStream());
+				final InputStream lenIs = filterClean(e.openInputStream());
 				try {
 					canonLen = computeLength(lenIs);
 				} finally {
 					safeClose(lenIs);
 				}
 
-				return computeHash(filterClean(e, is), canonLen);
+				return computeHash(filterClean(is), canonLen);
 			} finally {
 				safeClose(is);
 			}
@@ -271,7 +270,7 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 		}
 	}
 
-	private boolean mightNeedCleaning(Entry entry) {
+	private boolean mightNeedCleaning() {
 		switch (getOptions().getAutoCRLF()) {
 		case FALSE:
 		default:
@@ -283,7 +282,7 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 		}
 	}
 
-	private boolean isBinary(Entry entry, byte[] content, int sz) {
+	private boolean isBinary(byte[] content, int sz) {
 		return RawText.isBinary(content, sz);
 	}
 
@@ -296,13 +295,13 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 		}
 	}
 
-	private ByteBuffer filterClean(Entry entry, byte[] src, int n)
+	private ByteBuffer filterClean(byte[] src, int n)
 			throws IOException {
 		InputStream in = new ByteArrayInputStream(src);
-		return IO.readWholeStream(filterClean(entry, in), n);
+		return IO.readWholeStream(filterClean(in), n);
 	}
 
-	private InputStream filterClean(Entry entry, InputStream in) {
+	private InputStream filterClean(InputStream in) {
 		return new EolCanonicalizingInputStream(in);
 	}
 
@@ -544,14 +543,10 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 	 * @param checkFilemode
 	 *            whether the executable-bit in the filemode should be checked
 	 *            to detect modifications
-	 * @param fs
-	 *            The filesystem this repo uses. Needed to find out whether the
-	 *            executable-bits are supported
-	 *
 	 * @return true if content is most likely different.
 	 */
 	public boolean isModified(DirCacheEntry entry, boolean forceContentCheck,
-			boolean checkFilemode, FS fs) {
+			boolean checkFilemode) {
 		if (entry.isAssumeValid())
 			return false;