/*
* #%L
* JavaHg
* %%
* Copyright (C) 2011 aragost Trifork ag
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
package com.aragost.javahg.commands;
import java.io.IOException;
import com.aragost.javahg.Changeset;
import com.aragost.javahg.Repository;
import com.aragost.javahg.commands.flags.RollbackCommandFlags;
import com.aragost.javahg.internals.HgInputStream;
import com.aragost.javahg.internals.RuntimeIOException;
import com.aragost.javahg.internals.Utils;
/**
* Command class for executing <tt>hg rollback</tt>. Set flags from
* {@link RollbackCommandFlags} and call the{@link #execute} method.
*/
public class RollbackCommand extends RollbackCommandFlags {
private static final byte[] REPOSITORY_TIP_ROLLBACK_REVSION = "repository tip rolled back to revision ".getBytes();
/**
* @param repository
* the repository associated with this command.
*/
public RollbackCommand(Repository repository) {
super(repository);
}
/**
* Rollback last transaction.
*
* @return The new tip of the repository
*/
public Changeset execute() {
HgInputStream stream = launchStream();
try {
stream.mustMatch(REPOSITORY_TIP_ROLLBACK_REVSION);
int rev = stream.decimalIntUpTo(' ');
stream.consumeAll();
return Utils.single(LogCommand.on(getRepository()).rev(String.valueOf(rev)).execute());
} catch (IOException e) {
throw new RuntimeIOException(e);
}
}
}