| /* |
| * Copyright (C) 2013, Robin Rosenberg <robin.rosenberg@dewire.com> |
| * and other copyright owners as documented in the project's IP log. |
| * |
| * This program and the accompanying materials are made available |
| * under the terms of the Eclipse Distribution License v1.0 which |
| * accompanies this distribution, is reproduced below, and is |
| * available at http://www.eclipse.org/org/documents/edl-v10.php |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * - Neither the name of the Eclipse Foundation, Inc. nor the |
| * names of its contributors may be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| 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"; //$NON-NLS-1$ |
| } |
| } |