org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Branch.java - jgit - Git at Google

 /*
  * Copyright (C) 2007-2008, Charles O'Farrell <charleso@charleso.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.pgm;

 import java.io.IOException;
 import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;

 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.Ref;
 import org.eclipse.jgit.lib.RefComparator;
 import org.eclipse.jgit.lib.RefRename;
 import org.eclipse.jgit.lib.RefUpdate;
 import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.lib.RefUpdate.Result;
 import org.eclipse.jgit.pgm.opt.CmdLineParser;
 import org.eclipse.jgit.revwalk.RevWalk;
 import org.kohsuke.args4j.Argument;
 import org.kohsuke.args4j.ExampleMode;
 import org.kohsuke.args4j.Option;

 @Command(common = true, usage = "usage_listCreateOrDeleteBranches")
 class Branch extends TextBuiltin {

 	@Option(name = "--remote", aliases = { "-r" }, usage = "usage_actOnRemoteTrackingBranches")
 	private boolean remote = false;

 	@Option(name = "--all", aliases = { "-a" }, usage = "usage_listBothRemoteTrackingAndLocalBranches")
 	private boolean all = false;

 	@Option(name = "--delete", aliases = { "-d" }, usage = "usage_deleteFullyMergedBranch")
 	private boolean delete = false;

 	@Option(name = "--delete-force", aliases = { "-D" }, usage = "usage_deleteBranchEvenIfNotMerged")
 	private boolean deleteForce = false;

 	@Option(name = "--create-force", aliases = { "-f" }, usage = "usage_forceCreateBranchEvenExists")
 	private boolean createForce = false;

 	@Option(name = "-m", usage = "usage_moveRenameABranch")
 	private boolean rename = false;

 	@Option(name = "--verbose", aliases = { "-v" }, usage = "usage_beVerbose")
 	private boolean verbose = false;

 	@Argument
 	private List<String> branches = new ArrayList<String>();

 	private final Map<String, Ref> printRefs = new LinkedHashMap<String, Ref>();

 	/** Only set for verbose branch listing at-the-moment */
 	private RevWalk rw;

 	private int maxNameLength;

 	@Override
 	protected void run() throws Exception {
 		if (delete || deleteForce)
 			delete(deleteForce);
 		else {
 			if (branches.size() > 2)
 				throw die(CLIText.get().tooManyRefsGiven + new CmdLineParser(this).printExample(ExampleMode.ALL));

 			if (rename) {
 				String src, dst;
 				if (branches.size() == 1) {
 					final Ref head = db.getRef(Constants.HEAD);
 					if (head != null && head.isSymbolic())
 						src = head.getLeaf().getName();
 					else
 						throw die(CLIText.get().cannotRenameDetachedHEAD);
 					dst = branches.get(0);
 				} else {
 					src = branches.get(0);
 					final Ref old = db.getRef(src);
 					if (old == null)
 						throw die(MessageFormat.format(CLIText.get().doesNotExist, src));
 					if (!old.getName().startsWith(Constants.R_HEADS))
 						throw die(MessageFormat.format(CLIText.get().notABranch, src));
 					src = old.getName();
 					dst = branches.get(1);
 				}

 				if (!dst.startsWith(Constants.R_HEADS))
 					dst = Constants.R_HEADS + dst;
 				if (!Repository.isValidRefName(dst))
 					throw die(MessageFormat.format(CLIText.get().notAValidRefName, dst));

 				RefRename r = db.renameRef(src, dst);
 				if (r.rename() != Result.RENAMED)
 					throw die(MessageFormat.format(CLIText.get().cannotBeRenamed, src));

 			} else if (branches.size() > 0) {
 				String newHead = branches.get(0);
 				String startBranch;
 				if (branches.size() == 2)
 					startBranch = branches.get(1);
 				else
 					startBranch = Constants.HEAD;
 				Ref startRef = db.getRef(startBranch);
 				ObjectId startAt = db.resolve(startBranch + "^0");
 				if (startRef != null)
 					startBranch = startRef.getName();
 				else
 					startBranch = startAt.name();
 				startBranch = db.shortenRefName(startBranch);
 				String newRefName = newHead;
 				if (!newRefName.startsWith(Constants.R_HEADS))
 					newRefName = Constants.R_HEADS + newRefName;
 				if (!Repository.isValidRefName(newRefName))
 					throw die(MessageFormat.format(CLIText.get().notAValidRefName, newRefName));
 				if (!createForce && db.resolve(newRefName) != null)
 					throw die(MessageFormat.format(CLIText.get().branchAlreadyExists, newHead));
 				RefUpdate updateRef = db.updateRef(newRefName);
 				updateRef.setNewObjectId(startAt);
 				updateRef.setForceUpdate(createForce);
 				updateRef.setRefLogMessage(MessageFormat.format(CLIText.get().branchCreatedFrom, startBranch), false);
 				Result update = updateRef.update();
 				if (update == Result.REJECTED)
 					throw die(MessageFormat.format(CLIText.get().couldNotCreateBranch, newHead, update.toString()));
 			} else {
 				if (verbose)
 					rw = new RevWalk(db);
 				list();
 			}
 		}
 	}

 	private void list() throws Exception {
 		Map<String, Ref> refs = db.getAllRefs();
 		Ref head = refs.get(Constants.HEAD);
 		// This can happen if HEAD is stillborn
 		if (head != null) {
 			String current = head.getLeaf().getName();
 			if (current.equals(Constants.HEAD))
 				addRef("(no branch)", head);
 			addRefs(refs, Constants.R_HEADS, !remote);
 			addRefs(refs, Constants.R_REMOTES, remote);
 			for (final Entry<String, Ref> e : printRefs.entrySet()) {
 				final Ref ref = e.getValue();
 				printHead(e.getKey(), current.equals(ref.getName()), ref);
 			}
 		}
 	}

 	private void addRefs(final Map<String, Ref> allRefs, final String prefix,
 			final boolean add) {
 		if (all || add) {
 			for (final Ref ref : RefComparator.sort(allRefs.values())) {
 				final String name = ref.getName();
 				if (name.startsWith(prefix))
 					addRef(name.substring(name.indexOf('/', 5) + 1), ref);
 			}
 		}
 	}

 	private void addRef(final String name, final Ref ref) {
 		printRefs.put(name, ref);
 		maxNameLength = Math.max(maxNameLength, name.length());
 	}

 	private void printHead(final String ref, final boolean isCurrent,
 			final Ref refObj) throws Exception {
 		out.print(isCurrent ? '*' : ' ');
 		out.print(' ');
 		out.print(ref);
 		if (verbose) {
 			final int spaces = maxNameLength - ref.length() + 1;
 			out.format("%" + spaces + "s", "");
 			final ObjectId objectId = refObj.getObjectId();
 			out.print(objectId.abbreviate(db).name());
 			out.print(' ');
 			out.print(rw.parseCommit(objectId).getShortMessage());
 		}
 		out.println();
 	}

 	private void delete(boolean force) throws IOException {
 		String current = db.getBranch();
 		ObjectId head = db.resolve(Constants.HEAD);
 		for (String branch : branches) {
 			if (current.equals(branch)) {
 				throw die(MessageFormat.format(CLIText.get().cannotDeleteTheBranchWhichYouAreCurrentlyOn, branch));
 			}
 			RefUpdate update = db.updateRef((remote ? Constants.R_REMOTES
 					: Constants.R_HEADS)
 					+ branch);
 			update.setNewObjectId(head);
 			update.setForceUpdate(force || remote);
 			Result result = update.delete();
 			if (result == Result.REJECTED) {
 				throw die(MessageFormat.format(CLIText.get().branchIsNotAnAncestorOfYourCurrentHEAD, branch));
 			} else if (result == Result.NEW)
 				throw die(MessageFormat.format(CLIText.get().branchNotFound, branch));
 			if (remote)
 				out.println(MessageFormat.format(CLIText.get().deletedRemoteBranch, branch));
 			else if (verbose)
 				out.println(MessageFormat.format(CLIText.get().deletedBranch, branch));
 		}
 	}
 }
	/*
	* Copyright (C) 2007-2008, Charles O'Farrell <charleso@charleso.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.pgm;

	import java.io.IOException;
	import java.text.MessageFormat;
	import java.util.ArrayList;
	import java.util.LinkedHashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.Map.Entry;

	import org.eclipse.jgit.lib.Constants;
	import org.eclipse.jgit.lib.ObjectId;
	import org.eclipse.jgit.lib.Ref;
	import org.eclipse.jgit.lib.RefComparator;
	import org.eclipse.jgit.lib.RefRename;
	import org.eclipse.jgit.lib.RefUpdate;
	import org.eclipse.jgit.lib.Repository;
	import org.eclipse.jgit.lib.RefUpdate.Result;
	import org.eclipse.jgit.pgm.opt.CmdLineParser;
	import org.eclipse.jgit.revwalk.RevWalk;
	import org.kohsuke.args4j.Argument;
	import org.kohsuke.args4j.ExampleMode;
	import org.kohsuke.args4j.Option;

	@Command(common = true, usage = "usage_listCreateOrDeleteBranches")
	class Branch extends TextBuiltin {

	@Option(name = "--remote", aliases = { "-r" }, usage = "usage_actOnRemoteTrackingBranches")
	private boolean remote = false;

	@Option(name = "--all", aliases = { "-a" }, usage = "usage_listBothRemoteTrackingAndLocalBranches")
	private boolean all = false;

	@Option(name = "--delete", aliases = { "-d" }, usage = "usage_deleteFullyMergedBranch")
	private boolean delete = false;

	@Option(name = "--delete-force", aliases = { "-D" }, usage = "usage_deleteBranchEvenIfNotMerged")
	private boolean deleteForce = false;

	@Option(name = "--create-force", aliases = { "-f" }, usage = "usage_forceCreateBranchEvenExists")
	private boolean createForce = false;

	@Option(name = "-m", usage = "usage_moveRenameABranch")
	private boolean rename = false;

	@Option(name = "--verbose", aliases = { "-v" }, usage = "usage_beVerbose")
	private boolean verbose = false;

	@Argument
	private List<String> branches = new ArrayList<String>();

	private final Map<String, Ref> printRefs = new LinkedHashMap<String, Ref>();

	/** Only set for verbose branch listing at-the-moment */
	private RevWalk rw;

	private int maxNameLength;

	@Override
	protected void run() throws Exception {
	if (delete \|\| deleteForce)
	delete(deleteForce);
	else {
	if (branches.size() > 2)
	throw die(CLIText.get().tooManyRefsGiven + new CmdLineParser(this).printExample(ExampleMode.ALL));

	if (rename) {
	String src, dst;
	if (branches.size() == 1) {
	final Ref head = db.getRef(Constants.HEAD);
	if (head != null && head.isSymbolic())
	src = head.getLeaf().getName();
	else
	throw die(CLIText.get().cannotRenameDetachedHEAD);
	dst = branches.get(0);
	} else {
	src = branches.get(0);
	final Ref old = db.getRef(src);
	if (old == null)
	throw die(MessageFormat.format(CLIText.get().doesNotExist, src));
	if (!old.getName().startsWith(Constants.R_HEADS))
	throw die(MessageFormat.format(CLIText.get().notABranch, src));
	src = old.getName();
	dst = branches.get(1);
	}

	if (!dst.startsWith(Constants.R_HEADS))
	dst = Constants.R_HEADS + dst;
	if (!Repository.isValidRefName(dst))
	throw die(MessageFormat.format(CLIText.get().notAValidRefName, dst));

	RefRename r = db.renameRef(src, dst);
	if (r.rename() != Result.RENAMED)
	throw die(MessageFormat.format(CLIText.get().cannotBeRenamed, src));

	} else if (branches.size() > 0) {
	String newHead = branches.get(0);
	String startBranch;
	if (branches.size() == 2)
	startBranch = branches.get(1);
	else
	startBranch = Constants.HEAD;
	Ref startRef = db.getRef(startBranch);
	ObjectId startAt = db.resolve(startBranch + "^0");
	if (startRef != null)
	startBranch = startRef.getName();
	else
	startBranch = startAt.name();
	startBranch = db.shortenRefName(startBranch);
	String newRefName = newHead;
	if (!newRefName.startsWith(Constants.R_HEADS))
	newRefName = Constants.R_HEADS + newRefName;
	if (!Repository.isValidRefName(newRefName))
	throw die(MessageFormat.format(CLIText.get().notAValidRefName, newRefName));
	if (!createForce && db.resolve(newRefName) != null)
	throw die(MessageFormat.format(CLIText.get().branchAlreadyExists, newHead));
	RefUpdate updateRef = db.updateRef(newRefName);
	updateRef.setNewObjectId(startAt);
	updateRef.setForceUpdate(createForce);
	updateRef.setRefLogMessage(MessageFormat.format(CLIText.get().branchCreatedFrom, startBranch), false);
	Result update = updateRef.update();
	if (update == Result.REJECTED)
	throw die(MessageFormat.format(CLIText.get().couldNotCreateBranch, newHead, update.toString()));
	} else {
	if (verbose)
	rw = new RevWalk(db);
	list();
	}
	}
	}

	private void list() throws Exception {
	Map<String, Ref> refs = db.getAllRefs();
	Ref head = refs.get(Constants.HEAD);
	// This can happen if HEAD is stillborn
	if (head != null) {
	String current = head.getLeaf().getName();
	if (current.equals(Constants.HEAD))
	addRef("(no branch)", head);
	addRefs(refs, Constants.R_HEADS, !remote);
	addRefs(refs, Constants.R_REMOTES, remote);
	for (final Entry<String, Ref> e : printRefs.entrySet()) {
	final Ref ref = e.getValue();
	printHead(e.getKey(), current.equals(ref.getName()), ref);
	}
	}
	}

	private void addRefs(final Map<String, Ref> allRefs, final String prefix,
	final boolean add) {
	if (all \|\| add) {
	for (final Ref ref : RefComparator.sort(allRefs.values())) {
	final String name = ref.getName();
	if (name.startsWith(prefix))
	addRef(name.substring(name.indexOf('/', 5) + 1), ref);
	}
	}
	}

	private void addRef(final String name, final Ref ref) {
	printRefs.put(name, ref);
	maxNameLength = Math.max(maxNameLength, name.length());
	}

	private void printHead(final String ref, final boolean isCurrent,
	final Ref refObj) throws Exception {
	out.print(isCurrent ? '*' : ' ');
	out.print(' ');
	out.print(ref);
	if (verbose) {
	final int spaces = maxNameLength - ref.length() + 1;
	out.format("%" + spaces + "s", "");
	final ObjectId objectId = refObj.getObjectId();
	out.print(objectId.abbreviate(db).name());
	out.print(' ');
	out.print(rw.parseCommit(objectId).getShortMessage());
	}
	out.println();
	}

	private void delete(boolean force) throws IOException {
	String current = db.getBranch();
	ObjectId head = db.resolve(Constants.HEAD);
	for (String branch : branches) {
	if (current.equals(branch)) {
	throw die(MessageFormat.format(CLIText.get().cannotDeleteTheBranchWhichYouAreCurrentlyOn, branch));
	}
	RefUpdate update = db.updateRef((remote ? Constants.R_REMOTES
	: Constants.R_HEADS)
	+ branch);
	update.setNewObjectId(head);
	update.setForceUpdate(force \|\| remote);
	Result result = update.delete();
	if (result == Result.REJECTED) {
	throw die(MessageFormat.format(CLIText.get().branchIsNotAnAncestorOfYourCurrentHEAD, branch));
	} else if (result == Result.NEW)
	throw die(MessageFormat.format(CLIText.get().branchNotFound, branch));
	if (remote)
	out.println(MessageFormat.format(CLIText.get().deletedRemoteBranch, branch));
	else if (verbose)
	out.println(MessageFormat.format(CLIText.get().deletedBranch, branch));
	}
	}
	}