| /* |
| * Copyright (C) 2011, Tomasz Zarna <Tomasz.Zarna@pl.ibm.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.revwalk.filter; |
| |
| import java.io.IOException; |
| |
| 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.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| |
| /** |
| * Limits the number of commits output. |
| */ |
| public class MaxCountRevFilter extends RevFilter { |
| |
| private int maxCount; |
| |
| private int count; |
| |
| /** |
| * Create a new max count filter. |
| * |
| * @param maxCount |
| * the limit |
| * @return a new filter |
| */ |
| public static RevFilter create(int maxCount) { |
| if (maxCount < 0) |
| throw new IllegalArgumentException( |
| JGitText.get().maxCountMustBeNonNegative); |
| return new MaxCountRevFilter(maxCount); |
| } |
| |
| private MaxCountRevFilter(int maxCount) { |
| this.count = 0; |
| this.maxCount = maxCount; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean include(RevWalk walker, RevCommit cmit) |
| throws StopWalkException, MissingObjectException, |
| IncorrectObjectTypeException, IOException { |
| count++; |
| if (count > maxCount) |
| throw StopWalkException.INSTANCE; |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public RevFilter clone() { |
| return new MaxCountRevFilter(maxCount); |
| } |
| } |