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.git.gitexe.command.status;
020
021import java.net.URI;
022
023import org.apache.maven.scm.ScmException;
024import org.apache.maven.scm.ScmFileSet;
025import org.apache.maven.scm.command.status.AbstractStatusCommand;
026import org.apache.maven.scm.command.status.StatusScmResult;
027import org.apache.maven.scm.provider.ScmProviderRepository;
028import org.apache.maven.scm.provider.git.command.GitCommand;
029import org.apache.maven.scm.provider.git.gitexe.command.GitCommandLineUtils;
030import org.apache.maven.scm.provider.git.repository.GitScmProviderRepository;
031import org.codehaus.plexus.util.cli.CommandLineUtils;
032import org.codehaus.plexus.util.cli.Commandline;
033import org.slf4j.Logger;
034
035/**
036 * @author <a href="mailto:brett@apache.org">Brett Porter</a>
037 *
038 */
039public class GitStatusCommand extends AbstractStatusCommand implements GitCommand {
040    /** {@inheritDoc} */
041    protected StatusScmResult executeStatusCommand(ScmProviderRepository repo, ScmFileSet fileSet) throws ScmException {
042        int exitCode;
043        CommandLineUtils.StringStreamConsumer stderr;
044
045        URI relativeRepositoryPath = getRelativeCWD(logger, fileSet);
046
047        Commandline cl = createCommandLine((GitScmProviderRepository) repo, fileSet);
048
049        GitStatusConsumer consumer = new GitStatusConsumer(fileSet.getBasedir(), relativeRepositoryPath, fileSet);
050
051        stderr = new CommandLineUtils.StringStreamConsumer();
052
053        exitCode = GitCommandLineUtils.execute(cl, consumer, stderr);
054        if (exitCode != 0) {
055            // git-status returns non-zero if nothing to do
056            if (logger.isInfoEnabled()) {
057                logger.info("nothing added to commit but untracked files present (use \"git add\" to track)");
058            }
059        }
060
061        return new StatusScmResult(cl.toString(), consumer.getChangedFiles());
062    }
063
064    // ----------------------------------------------------------------------
065    //
066    // ----------------------------------------------------------------------
067
068    /**
069     * Get the dir relative to the repository root.
070     *
071     * @param logger the caller command logger.
072     * @param fileSet in which subdir to execute.
073     * @return the relative URI.
074     * @throws ScmException if execute() fails.
075     */
076    public static URI getRelativeCWD(Logger logger, ScmFileSet fileSet) throws ScmException {
077        Commandline clRevparse = createRevparseShowPrefix(fileSet);
078
079        CommandLineUtils.StringStreamConsumer stdout = new CommandLineUtils.StringStreamConsumer();
080        CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();
081
082        URI relativeRepositoryPath = null;
083
084        int exitCode = GitCommandLineUtils.execute(clRevparse, stdout, stderr);
085        if (exitCode != 0) {
086            // git-status returns non-zero if nothing to do
087            if (logger.isInfoEnabled()) {
088                logger.info("Could not resolve prefix");
089            }
090        } else {
091            relativeRepositoryPath =
092                    GitStatusConsumer.uriFromPath(stdout.getOutput().trim());
093        }
094        return relativeRepositoryPath;
095    }
096
097    public static Commandline createCommandLine(GitScmProviderRepository repository, ScmFileSet fileSet) {
098        Commandline cl = GitCommandLineUtils.getBaseGitCommandLine(fileSet.getBasedir(), "status");
099        cl.addArguments(new String[] {"--porcelain", "."});
100        return cl;
101    }
102
103    public static Commandline createRevparseShowPrefix(ScmFileSet fileSet) {
104        Commandline cl = GitCommandLineUtils.getBaseGitCommandLine(fileSet.getBasedir(), "rev-parse");
105        cl.addArguments(new String[] {"--show-prefix"});
106        return cl;
107    }
108}