| /* |
| * Copyright (C) 2013, Robin Rosenberg <robin.rosenberg@dewire.com> and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package org.eclipse.jgit.treewalk.filter; |
| |
| import org.eclipse.jgit.dircache.DirCacheEntry; |
| import org.eclipse.jgit.dircache.DirCacheIterator; |
| import org.eclipse.jgit.treewalk.TreeWalk; |
| |
| /** |
| * A filter for extracting changes between two versions of the dircache. In |
| * addition to what {@link org.eclipse.jgit.treewalk.filter.TreeFilter#ANY_DIFF} |
| * would do, it also detects changes that will affect decorations and show up in |
| * an attempt to commit. |
| */ |
| public final class InterIndexDiffFilter extends TreeFilter { |
| private static final int baseTree = 0; |
| |
| /** |
| * Predefined InterIndexDiffFilter for finding changes between two dircaches |
| */ |
| public static final TreeFilter INSTANCE = new InterIndexDiffFilter(); |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean include(TreeWalk walker) { |
| final int n = walker.getTreeCount(); |
| if (n == 1) // Assume they meant difference to empty tree. |
| return true; |
| |
| final int m = walker.getRawMode(baseTree); |
| for (int i = 1; i < n; i++) { |
| DirCacheIterator baseDirCache = walker.getTree(baseTree, |
| DirCacheIterator.class); |
| DirCacheIterator newDirCache = walker.getTree(i, |
| DirCacheIterator.class); |
| if (baseDirCache != null && newDirCache != null) { |
| DirCacheEntry baseDci = baseDirCache.getDirCacheEntry(); |
| DirCacheEntry newDci = newDirCache.getDirCacheEntry(); |
| if (baseDci != null && newDci != null) { |
| if (baseDci.isAssumeValid() != newDci.isAssumeValid()) |
| return true; |
| if (baseDci.isAssumeValid()) // && newDci.isAssumeValid() |
| return false; |
| } |
| } |
| if (walker.getRawMode(i) != m || !walker.idEqual(i, baseTree)) |
| return true; |
| } |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean shouldBeRecursive() { |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public TreeFilter clone() { |
| return this; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String toString() { |
| return "INTERINDEX_DIFF"; //$NON-NLS-1$ |
| } |
| } |