/*
* Copyright (C) 2010, Mathias Kinzler <mathias.kinzler@sap.com>
* Copyright (C) 2010, Chris Aniszczyk <caniszczyk@gmail.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.api;
import java.io.IOException;
import java.text.MessageFormat;
import java.util.Arrays;
import org.eclipse.jgit.api.errors.DetachedHeadException;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.api.errors.InvalidRefNameException;
import org.eclipse.jgit.api.errors.JGitInternalException;
import org.eclipse.jgit.api.errors.NoHeadException;
import org.eclipse.jgit.api.errors.RefAlreadyExistsException;
import org.eclipse.jgit.api.errors.RefNotFoundException;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.lib.ConfigConstants;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.RefRename;
import org.eclipse.jgit.lib.RefUpdate.Result;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.StoredConfig;
/**
* Used to rename branches.
*
* @see <a
* href="http://www.kernel.org/pub/software/scm/git/docs/git-branch.html"
* >Git documentation about Branch</a>
*/
public class RenameBranchCommand extends GitCommand<Ref> {
private String oldName;
private String newName;
/**
* @param repo
*/
protected RenameBranchCommand(Repository repo) {
super(repo);
}
/**
* @throws RefNotFoundException
* if the old branch can not be found (branch with provided old
* name does not exist or old name resolves to a tag)
* @throws InvalidRefNameException
* if the provided new name is <code>null</code> or otherwise
* invalid
* @throws RefAlreadyExistsException
* if a branch with the new name already exists
* @throws DetachedHeadException
* if rename is tried without specifying the old name and HEAD
* is detached
*/
public Ref call() throws GitAPIException, RefNotFoundException, InvalidRefNameException,
RefAlreadyExistsException, DetachedHeadException {
checkCallable();
if (newName == null)
throw new InvalidRefNameException(MessageFormat.format(JGitText
.get().branchNameInvalid, "<null>")); //$NON-NLS-1$
try {
String fullOldName;
String fullNewName;
if (repo.findRef(newName) != null)
throw new RefAlreadyExistsException(MessageFormat.format(
JGitText.get().refAlreadyExists1, newName));
if (oldName != null) {
Ref ref = repo.findRef(oldName);
if (ref == null)
throw new RefNotFoundException(MessageFormat.format(
JGitText.get().refNotResolved, oldName));
if (ref.getName().startsWith(Constants.R_TAGS))
throw new RefNotFoundException(MessageFormat.format(
JGitText.get().renameBranchFailedBecauseTag,
oldName));
fullOldName = ref.getName();
} else {
fullOldName = repo.getFullBranch();
if (fullOldName == null) {
throw new NoHeadException(
JGitText.get().invalidRepositoryStateNoHead);
}
if (ObjectId.isId(fullOldName))
throw new DetachedHeadException();
}
if (fullOldName.startsWith(Constants.R_REMOTES))
fullNewName = Constants.R_REMOTES + newName;
else {
fullNewName = Constants.R_HEADS + newName;
}
if (!Repository.isValidRefName(fullNewName))
throw new InvalidRefNameException(MessageFormat.format(JGitText
.get().branchNameInvalid, fullNewName));
RefRename rename = repo.renameRef(fullOldName, fullNewName);
Result renameResult = rename.rename();
setCallable(false);
if (Result.RENAMED != renameResult)
throw new JGitInternalException(MessageFormat.format(JGitText
.get().renameBranchUnexpectedResult, renameResult
.name()));
if (fullNewName.startsWith(Constants.R_HEADS)) {
String shortOldName = fullOldName.substring(Constants.R_HEADS
.length());
final StoredConfig repoConfig = repo.getConfig();
// Copy all configuration values over to the new branch
for (String name : repoConfig.getNames(
ConfigConstants.CONFIG_BRANCH_SECTION, shortOldName)) {
String[] values = repoConfig.getStringList(
ConfigConstants.CONFIG_BRANCH_SECTION,
shortOldName, name);
if (values.length == 0)
continue;
// Keep any existing values already configured for the
// new branch name
String[] existing = repoConfig.getStringList(
ConfigConstants.CONFIG_BRANCH_SECTION, newName,
name);
if (existing.length > 0) {
String[] newValues = new String[values.length
+ existing.length];
System.arraycopy(existing, 0, newValues, 0,
existing.length);
System.arraycopy(values, 0, newValues, existing.length,
values.length);
values = newValues;
}
repoConfig.setStringList(
ConfigConstants.CONFIG_BRANCH_SECTION, newName,
name, Arrays.asList(values));
}
repoConfig.unsetSection(ConfigConstants.CONFIG_BRANCH_SECTION,
shortOldName);
repoConfig.save();
}
Ref resultRef = repo.findRef(newName);
if (resultRef == null)
throw new JGitInternalException(
JGitText.get().renameBranchFailedUnknownReason);
return resultRef;
} catch (IOException ioe) {
throw new JGitInternalException(ioe.getMessage(), ioe);
}
}
/**
* @param newName
* the new name
* @return this instance
*/
public RenameBranchCommand setNewName(String newName) {
checkCallable();
this.newName = newName;
return this;
}
/**
* @param oldName
* the name of the branch to rename; if not set, the currently
* checked out branch (if any) will be renamed
* @return this instance
*/
public RenameBranchCommand setOldName(String oldName) {
checkCallable();
this.oldName = oldName;
return this;
}
}