Add commit command to the pgm package

The commit command is added using the new Git class. Currently
this supports only the author and commit-message option.

Change-Id: I13152575b5b03f6f9e816d0747e7a8c5c6fccade
Signed-off-by: Christian Halstrick <christian.halstrick@sap.com>

org.eclipse.jgit.pgm/META-INF/MANIFEST.MF

@@ -6,7 +6,8 @@ Bundle-Version: 0.8.0.qualifier
 Bundle-Vendor: %provider_name
 Bundle-Localization: plugin
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
-Import-Package: org.eclipse.jgit.awtui;version="[0.8.0,0.9.0)",
+Import-Package: org.eclipse.jgit.api;version="[0.8.0,0.9.0)",
+ org.eclipse.jgit.awtui;version="[0.8.0,0.9.0)",
  org.eclipse.jgit.diff;version="[0.8.0,0.9.0)",
  org.eclipse.jgit.dircache;version="[0.8.0,0.9.0)",
  org.eclipse.jgit.errors;version="[0.8.0,0.9.0)",

org.eclipse.jgit.pgm/META-INF/services/org.eclipse.jgit.pgm.TextBuiltin

@@ -1,6 +1,7 @@
 org.eclipse.jgit.pgm.AmazonS3Client
 org.eclipse.jgit.pgm.Branch
 org.eclipse.jgit.pgm.Clone
+org.eclipse.jgit.pgm.Commit
 org.eclipse.jgit.pgm.Daemon
 org.eclipse.jgit.pgm.Diff
 org.eclipse.jgit.pgm.DiffTree

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Commit.java

@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2010, Christian Halstrick <christian.halstrick@sap.com> 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.pgm;
+
+import org.eclipse.jgit.api.CommitCommand;
+import org.eclipse.jgit.api.ConcurrentRefUpdateException;
+import org.eclipse.jgit.api.Git;
+import org.eclipse.jgit.api.JGitInternalException;
+import org.eclipse.jgit.api.NoHeadException;
+import org.eclipse.jgit.api.NoMessageException;
+import org.eclipse.jgit.lib.Constants;
+import org.eclipse.jgit.lib.PersonIdent;
+import org.eclipse.jgit.lib.Ref;
+import org.eclipse.jgit.revwalk.RevCommit;
+import org.kohsuke.args4j.Option;
+
+@Command(common = true, usage = "Record changes to the repository")
+class Commit extends TextBuiltin {
+	// I don't support setting the committer, because also the native git
+	// command doesn't allow this.
+
+	@Option(name = "--author", metaVar="author", usage = "Override the author name used in the commit. You can use the standard A U Thor <author@example.com> format.")
+	private String author;
+
+	@Option(name = "--message", aliases = { "-m" }, metaVar="msg", usage="Use the given <msg> as the commit message", required=true)
+	private String message;
+
+	@Override
+	protected void run() throws NoHeadException, NoMessageException,
+			ConcurrentRefUpdateException, JGitInternalException, Exception {
+		CommitCommand commitCmd = new Git(db).commit();
+		if (author != null)
+			commitCmd.setAuthor(new PersonIdent(author));
+		if (message != null)
+			commitCmd.setMessage(message);
+		Ref head = db.getRef(Constants.HEAD);
+		RevCommit commit = commitCmd.call();
+
+		String branchName;
+		if (!head.isSymbolic())
+			branchName="detached HEAD";
+		else {
+			branchName = head.getTarget().getName();
+			if (branchName.startsWith(Constants.R_HEADS))
+				branchName = branchName.substring(Constants.R_HEADS.length());
+		}
+		out.println("[" + branchName + " " + commit.name() + "] "
+				+ commit.getShortMessage());
+	}
+}