/*
* #%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 java.io.InputStream;
import com.aragost.javahg.Changeset;
import com.aragost.javahg.Repository;
import com.aragost.javahg.commands.flags.UpdateCommandFlags;
import com.aragost.javahg.internals.UpdateMergeHelper;
/**
* Command class for executing <tt>hg update</tt>. Set flags from
* {@link UpdateCommandFlags} and call the {@link #execute} method.
*/
public class UpdateCommand extends UpdateCommandFlags {
/**
* @param repository
* the repository associated with this command.
*/
public UpdateCommand(Repository repository) {
super(repository);
}
/**
* Run <tt>hg update</tt> on a clean working copy. This runs with
* no merge oracle and so the caller must ensure that there are no
* merge conflicts.
*
* @return the update result.
* @throws IOException
*/
public UpdateResult execute() throws IOException {
return executeHelper(null);
}
/**
* Run <tt>hg update</tt> with a merge oracle.
*
* @param oracle
* the merge oracle to use in case of merge conflicts.
*
* @return the update result.
* @throws IOException
*/
public UpdateResult execute(ManifestMergeOracle oracle) throws IOException {
if (oracle == null) {
throw new IllegalArgumentException("oracle == null");
}
return executeHelper(oracle);
}
private UpdateResult executeHelper(ManifestMergeOracle oracle) throws IOException {
InputStream stdout = launchStream();
UpdateMergeHelper helper = new UpdateMergeHelper(stdout, oracle, this);
return helper.update();
}
@Override
public boolean isSuccessful() {
return super.isSuccessful() || getReturnCode() == 1;
}
/**
* @return True if the command was not successful because it would have
* crossed branches. Applicable to updates where revision is not
* specified.
*/
public boolean crossedBranch() {
String errorString = getErrorString();
return errorString.indexOf("abort: crosses branches") >= 0;
}
/**
* Set the <tt>--rev</tt> flag.
*
* @param cset
* the changeset to update to
* @return this command.
*/
public UpdateCommand rev(Changeset cset) {
super.rev(cset.getNode());
return this;
}
}