| /* |
| * 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.revwalk.filter; |
| |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.jgit.internal.JGitText; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.util.RawCharSequence; |
| import org.eclipse.jgit.util.RawParseUtils; |
| |
| /** |
| * Matches only commits whose author name matches the pattern. |
| */ |
| public class AuthorRevFilter { |
| /** |
| * Create a new author filter. |
| * <p> |
| * An optimized substring search may be automatically selected if the |
| * pattern does not contain any regular expression meta-characters. |
| * <p> |
| * The search is performed using a case-insensitive comparison. The |
| * character encoding of the commit message itself is not respected. The |
| * filter matches on raw UTF-8 byte sequences. |
| * |
| * @param pattern |
| * regular expression pattern to match. |
| * @return a new filter that matches the given expression against the author |
| * name and address of a commit. |
| */ |
| public static RevFilter create(String pattern) { |
| if (pattern.length() == 0) |
| throw new IllegalArgumentException(JGitText.get().cannotMatchOnEmptyString); |
| if (SubStringRevFilter.safe(pattern)) |
| return new SubStringSearch(pattern); |
| return new PatternSearch(pattern); |
| } |
| |
| private AuthorRevFilter() { |
| // Don't permit us to be created. |
| } |
| |
| static RawCharSequence textFor(final RevCommit cmit) { |
| final byte[] raw = cmit.getRawBuffer(); |
| final int b = RawParseUtils.author(raw, 0); |
| if (b < 0) |
| return RawCharSequence.EMPTY; |
| final int e = RawParseUtils.nextLF(raw, b, '>'); |
| return new RawCharSequence(raw, b, e); |
| } |
| |
| private static class PatternSearch extends PatternMatchRevFilter { |
| PatternSearch(final String patternText) { |
| super(patternText, true, true, Pattern.CASE_INSENSITIVE); |
| } |
| |
| @Override |
| protected CharSequence text(final RevCommit cmit) { |
| return textFor(cmit); |
| } |
| |
| @Override |
| public RevFilter clone() { |
| return new PatternSearch(pattern()); |
| } |
| } |
| |
| private static class SubStringSearch extends SubStringRevFilter { |
| SubStringSearch(final String patternText) { |
| super(patternText); |
| } |
| |
| @Override |
| protected RawCharSequence text(final RevCommit cmit) { |
| return textFor(cmit); |
| } |
| } |
| } |