001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.maven.scm.provider.hg.command.diff;
020
021import org.apache.commons.lang3.StringUtils;
022import org.apache.maven.scm.ScmException;
023import org.apache.maven.scm.ScmFileSet;
024import org.apache.maven.scm.ScmResult;
025import org.apache.maven.scm.ScmVersion;
026import org.apache.maven.scm.command.Command;
027import org.apache.maven.scm.command.diff.AbstractDiffCommand;
028import org.apache.maven.scm.command.diff.DiffScmResult;
029import org.apache.maven.scm.provider.ScmProviderRepository;
030import org.apache.maven.scm.provider.hg.HgUtils;
031import org.apache.maven.scm.provider.hg.command.HgCommandConstants;
032
033/**
034 * @author <a href="mailto:thurner.rupert@ymono.net">thurner rupert</a>
035 *
036 */
037public class HgDiffCommand extends AbstractDiffCommand implements Command {
038    /** {@inheritDoc} */
039    protected DiffScmResult executeDiffCommand(
040            ScmProviderRepository repo, ScmFileSet fileSet, ScmVersion startRevision, ScmVersion endRevision)
041            throws ScmException {
042        String[] diffCmd;
043        if (startRevision != null && !StringUtils.isEmpty(startRevision.getName())) {
044            String revArg = startRevision.getName();
045            if (endRevision != null && !StringUtils.isEmpty(endRevision.getName())) {
046                revArg += ".." + endRevision;
047            }
048            diffCmd = new String[] {HgCommandConstants.DIFF_CMD, HgCommandConstants.REVISION_OPTION, revArg};
049        } else {
050            diffCmd = new String[] {HgCommandConstants.DIFF_CMD};
051        }
052
053        diffCmd = HgUtils.expandCommandLine(diffCmd, fileSet);
054        HgDiffConsumer consumer = new HgDiffConsumer(fileSet.getBasedir());
055
056        ScmResult result = HgUtils.execute(consumer, fileSet.getBasedir(), diffCmd);
057
058        return new DiffScmResult(consumer.getChangedFiles(), consumer.getDifferences(), consumer.getPatch(), result);
059    }
060}