/*
* 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 org.eclipse.jgit.api.errors.ConcurrentRefUpdateException;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.api.errors.InvalidTagNameException;
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.internal.JGitText;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.RefUpdate.Result;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.jgit.lib.TagBuilder;
import org.eclipse.jgit.revwalk.RevObject;
import org.eclipse.jgit.revwalk.RevWalk;
/**
* A class used to execute a {@code Tag} command. It has setters for all
* supported options and arguments of this command and a {@link #call()} method
* to finally execute the command.
*
* @see <a href="http://www.kernel.org/pub/software/scm/git/docs/git-tag.html"
* >Git documentation about Tag</a>
*/
public class TagCommand extends GitCommand<Ref> {
private RevObject id;
private String name;
private String message;
private PersonIdent tagger;
private boolean signed;
private boolean forceUpdate;
/**
* @param repo
*/
protected TagCommand(Repository repo) {
super(repo);
}
/**
* Executes the {@code tag} command with all the options and parameters
* collected by the setter methods of this class. Each instance of this
* class should only be used for one invocation of the command (means: one
* call to {@link #call()})
*
* @return a {@link Ref} a ref pointing to a tag
* @throws NoHeadException
* when called on a git repo without a HEAD reference
* @since 2.0
*/
public Ref call() throws GitAPIException, ConcurrentRefUpdateException,
InvalidTagNameException, NoHeadException {
checkCallable();
RepositoryState state = repo.getRepositoryState();
processOptions(state);
try {
// create the tag object
TagBuilder newTag = new TagBuilder();
newTag.setTag(name);
newTag.setMessage(message);
newTag.setTagger(tagger);
// if no id is set, we should attempt to use HEAD
if (id == null) {
ObjectId objectId = repo.resolve(Constants.HEAD + "^{commit}");
if (objectId == null)
throw new NoHeadException(
JGitText.get().tagOnRepoWithoutHEADCurrentlyNotSupported);
newTag.setObjectId(objectId, Constants.OBJ_COMMIT);
} else {
newTag.setObjectId(id);
}
// write the tag object
ObjectInserter inserter = repo.newObjectInserter();
try {
ObjectId tagId = inserter.insert(newTag);
inserter.flush();
RevWalk revWalk = new RevWalk(repo);
try {
String refName = Constants.R_TAGS + newTag.getTag();
RefUpdate tagRef = repo.updateRef(refName);
tagRef.setNewObjectId(tagId);
tagRef.setForceUpdate(forceUpdate);
tagRef.setRefLogMessage("tagged " + name, false);
Result updateResult = tagRef.update(revWalk);
switch (updateResult) {
case NEW:
case FORCED:
return repo.getRef(refName);
case LOCK_FAILURE:
throw new ConcurrentRefUpdateException(
JGitText.get().couldNotLockHEAD,
tagRef.getRef(), updateResult);
case REJECTED:
throw new RefAlreadyExistsException(
MessageFormat.format(
JGitText.get().tagAlreadyExists,
newTag.toString()));
default:
throw new JGitInternalException(MessageFormat.format(
JGitText.get().updatingRefFailed, refName,
newTag.toString(), updateResult));
}
} finally {
revWalk.release();
}
} finally {
inserter.release();
}
} catch (IOException e) {
throw new JGitInternalException(
JGitText.get().exceptionCaughtDuringExecutionOfTagCommand,
e);
}
}
/**
* Sets default values for not explicitly specified options. Then validates
* that all required data has been provided.
*
* @param state
* the state of the repository we are working on
*
* @throws InvalidTagNameException
* if the tag name is null or invalid
* @throws UnsupportedOperationException
* if the tag is signed (not supported yet)
*/
private void processOptions(RepositoryState state)
throws InvalidTagNameException {
if (tagger == null)
tagger = new PersonIdent(repo);
if (name == null || !Repository.isValidRefName(Constants.R_TAGS + name))
throw new InvalidTagNameException(MessageFormat.format(JGitText
.get().tagNameInvalid, name == null ? "<null>" : name));
if (signed)
throw new UnsupportedOperationException(
JGitText.get().signingNotSupportedOnTag);
}
/**
* @param name
* the tag name used for the {@code tag}
* @return {@code this}
*/
public TagCommand setName(String name) {
checkCallable();
this.name = name;
return this;
}
/**
* @return the tag name used for the <code>tag</code>
*/
public String getName() {
return name;
}
/**
* @return the tag message used for the <code>tag</code>
*/
public String getMessage() {
return message;
}
/**
* @param message
* the tag message used for the {@code tag}
* @return {@code this}
*/
public TagCommand setMessage(String message) {
checkCallable();
this.message = message;
return this;
}
/**
* @return whether the tag is signed
*/
public boolean isSigned() {
return signed;
}
/**
* If set to true the Tag command creates a signed tag object. This
* corresponds to the parameter -s on the command line.
*
* @param signed
* @return {@code this}
*/
public TagCommand setSigned(boolean signed) {
this.signed = signed;
return this;
}
/**
* Sets the tagger of the tag. If the tagger is null, a PersonIdent will be
* created from the info in the repository.
*
* @param tagger
* @return {@code this}
*/
public TagCommand setTagger(PersonIdent tagger) {
this.tagger = tagger;
return this;
}
/**
* @return the tagger of the tag
*/
public PersonIdent getTagger() {
return tagger;
}
/**
* @return the object id of the tag
*/
public RevObject getObjectId() {
return id;
}
/**
* Sets the object id of the tag. If the object id is null, the commit
* pointed to from HEAD will be used.
*
* @param id
* @return {@code this}
*/
public TagCommand setObjectId(RevObject id) {
this.id = id;
return this;
}
/**
* @return is this a force update
*/
public boolean isForceUpdate() {
return forceUpdate;
}
/**
* If set to true the Tag command may replace an existing tag object. This
* corresponds to the parameter -f on the command line.
*
* @param forceUpdate
* @return {@code this}
*/
public TagCommand setForceUpdate(boolean forceUpdate) {
this.forceUpdate = forceUpdate;
return this;
}
}