| /* |
| * Copyright (C) 2013, Robin Stocker <robin@nibor.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 java.text.MessageFormat; |
| |
| import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.errors.StopWalkException; |
| import org.eclipse.jgit.internal.JGitText; |
| import org.eclipse.jgit.treewalk.TreeWalk; |
| |
| /** |
| * For testing an array of {@link org.eclipse.jgit.treewalk.filter.TreeFilter} |
| * during a {@link org.eclipse.jgit.treewalk.TreeWalk} for each entry and |
| * returning the result as a bitmask. |
| * |
| * @since 2.3 |
| */ |
| public class TreeFilterMarker { |
| |
| private final TreeFilter[] filters; |
| |
| /** |
| * Construct a TreeFilterMarker. Note that it is stateful and can only be |
| * used for one walk loop. |
| * |
| * @param markTreeFilters |
| * the filters to use for marking, must not have more elements |
| * than {@link java.lang.Integer#SIZE}. |
| * @throws java.lang.IllegalArgumentException |
| * if more tree filters are passed than possible |
| */ |
| public TreeFilterMarker(TreeFilter[] markTreeFilters) { |
| if (markTreeFilters.length > Integer.SIZE) { |
| throw new IllegalArgumentException(MessageFormat.format( |
| JGitText.get().treeFilterMarkerTooManyFilters, |
| Integer.valueOf(Integer.SIZE), |
| Integer.valueOf(markTreeFilters.length))); |
| } |
| filters = new TreeFilter[markTreeFilters.length]; |
| System.arraycopy(markTreeFilters, 0, filters, 0, markTreeFilters.length); |
| } |
| |
| /** |
| * Test the filters against the walk. Returns a bitmask where each bit |
| * represents the result of a call to |
| * {@link org.eclipse.jgit.treewalk.filter.TreeFilter#include(TreeWalk)}, |
| * ordered by the index for which the tree filters were passed in the |
| * constructor. |
| * |
| * @param walk |
| * the walk from which to test the current entry |
| * @return the marks bitmask |
| * @throws org.eclipse.jgit.errors.MissingObjectException |
| * as thrown by |
| * {@link org.eclipse.jgit.treewalk.filter.TreeFilter#include(TreeWalk)} |
| * @throws org.eclipse.jgit.errors.IncorrectObjectTypeException |
| * as thrown by |
| * {@link org.eclipse.jgit.treewalk.filter.TreeFilter#include(TreeWalk)} |
| * @throws java.io.IOException |
| * as thrown by |
| * {@link org.eclipse.jgit.treewalk.filter.TreeFilter#include(TreeWalk)} |
| */ |
| public int getMarks(TreeWalk walk) throws MissingObjectException, |
| IncorrectObjectTypeException, IOException { |
| int marks = 0; |
| for (int index = 0; index < filters.length; index++) { |
| TreeFilter filter = filters[index]; |
| if (filter != null) { |
| try { |
| boolean marked = filter.include(walk); |
| if (marked) |
| marks |= (1L << index); |
| } catch (StopWalkException e) { |
| // Don't check tree filter anymore, it will no longer |
| // match |
| filters[index] = null; |
| } |
| } |
| } |
| return marks; |
| } |
| |
| } |