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Diffstat (limited to 'org.eclipse.jgit/src/org/eclipse/jgit/merge/MergeMessageFormatter.java')
-rw-r--r-- | org.eclipse.jgit/src/org/eclipse/jgit/merge/MergeMessageFormatter.java | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/merge/MergeMessageFormatter.java b/org.eclipse.jgit/src/org/eclipse/jgit/merge/MergeMessageFormatter.java new file mode 100644 index 0000000000..cb2f8a522c --- /dev/null +++ b/org.eclipse.jgit/src/org/eclipse/jgit/merge/MergeMessageFormatter.java @@ -0,0 +1,132 @@ +/* + * Copyright (C) 2010, 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.merge; + +import java.util.ArrayList; +import java.util.List; + +import org.eclipse.jgit.lib.Constants; +import org.eclipse.jgit.lib.Ref; +import org.eclipse.jgit.lib.Repository; +import org.eclipse.jgit.util.StringUtils; + +/** + * Formatter for constructing the commit message for a merge commit. + * <p> + * The format should be the same as C Git does it, for compatibility. + */ +public class MergeMessageFormatter { + /** + * Construct the merge commit message. + * + * @param refsToMerge + * the refs which will be merged + * @param target + * the branch ref which will be merged into + * @return merge commit message + */ + public String format(List<Ref> refsToMerge, Ref target) { + StringBuilder sb = new StringBuilder(); + sb.append("Merge "); + + List<String> branches = new ArrayList<String>(); + List<String> remoteBranches = new ArrayList<String>(); + List<String> tags = new ArrayList<String>(); + List<String> commits = new ArrayList<String>(); + List<String> others = new ArrayList<String>(); + for (Ref ref : refsToMerge) { + if (ref.getName().startsWith(Constants.R_HEADS)) + branches.add("'" + Repository.shortenRefName(ref.getName()) + + "'"); + + else if (ref.getName().startsWith(Constants.R_REMOTES)) + remoteBranches.add("'" + + Repository.shortenRefName(ref.getName()) + "'"); + + else if (ref.getName().startsWith(Constants.R_TAGS)) + tags.add("'" + Repository.shortenRefName(ref.getName()) + "'"); + + else if (ref.getName().equals(ref.getObjectId().getName())) + commits.add("'" + ref.getName() + "'"); + + else + others.add(ref.getName()); + } + + List<String> listings = new ArrayList<String>(); + + if (!branches.isEmpty()) + listings.add(joinNames(branches, "branch", "branches")); + + if (!remoteBranches.isEmpty()) + listings.add(joinNames(remoteBranches, "remote branch", + "remote branches")); + + if (!tags.isEmpty()) + listings.add(joinNames(tags, "tag", "tags")); + + if (!commits.isEmpty()) + listings.add(joinNames(commits, "commit", "commits")); + + if (!others.isEmpty()) + listings.add(StringUtils.join(others, ", ", " and ")); + + sb.append(StringUtils.join(listings, ", ")); + + if (!target.getName().equals(Constants.R_HEADS + Constants.MASTER)) { + String targetShortName = Repository + .shortenRefName(target.getName()); + sb.append(" into " + targetShortName); + } + + return sb.toString(); + } + + private static String joinNames(List<String> names, String singular, + String plural) { + if (names.size() == 1) + return singular + " " + names.get(0); + else + return plural + " " + StringUtils.join(names, ", ", " and "); + } +} |