| /* |
| * Copyright (C) 2008, Google Inc. |
| * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> |
| * 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 java.io.IOException; |
| |
| import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.treewalk.TreeWalk; |
| |
| /** |
| * Includes an entry only if the subfilter does not include the entry. |
| */ |
| public class NotTreeFilter extends TreeFilter { |
| /** |
| * Create a filter that negates the result of another filter. |
| * |
| * @param a |
| * filter to negate. |
| * @return a filter that does the reverse of <code>a</code>. |
| */ |
| public static TreeFilter create(TreeFilter a) { |
| return new NotTreeFilter(a); |
| } |
| |
| private final TreeFilter a; |
| |
| private NotTreeFilter(TreeFilter one) { |
| a = one; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public TreeFilter negate() { |
| return a; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean include(TreeWalk walker) |
| throws MissingObjectException, IncorrectObjectTypeException, |
| IOException { |
| return matchFilter(walker) == 0; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public int matchFilter(TreeWalk walker) |
| throws MissingObjectException, IncorrectObjectTypeException, |
| IOException { |
| final int r = a.matchFilter(walker); |
| // switch 0 and 1, keep -1 as that defines a subpath that must be |
| // traversed before a final verdict can be made. |
| if (r == 0) { |
| return 1; |
| } |
| if (r == 1) { |
| return 0; |
| } |
| return -1; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean shouldBeRecursive() { |
| return a.shouldBeRecursive(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public TreeFilter clone() { |
| final TreeFilter n = a.clone(); |
| return n == a ? this : new NotTreeFilter(n); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String toString() { |
| return "NOT " + a.toString(); //$NON-NLS-1$ |
| } |
| } |