maven-scm-providers/maven-scm-providers-git/maven-scm-provider-gitexe/src/main/java/org/apache/maven/scm/provider/git/gitexe/command/GitCommandLineUtils.java

package org.apache.maven.scm.provider.git.gitexe.command;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import org.apache.maven.scm.ScmException;
import org.apache.maven.scm.log.ScmLogger;
import org.codehaus.plexus.util.cli.CommandLineException;
import org.codehaus.plexus.util.cli.CommandLineUtils;
import org.codehaus.plexus.util.cli.Commandline;
import org.codehaus.plexus.util.cli.StreamConsumer;

import java.io.File;
import java.util.Iterator;
import java.util.List;

/**
 * Command line construction utility.
 *
 * @author Brett Porter
 * @author <a href="mailto:struberg@yahoo.de">Mark Struberg</a>
 */
public class GitCommandLineUtils
{
    public static void addTarget( Commandline cl, List/*<File>*/ files )
    {
        if ( files == null || files.isEmpty() )
        {
            return;
        }

        for ( Iterator i = files.iterator(); i.hasNext(); )
        {
            File f = (File) i.next();
            String relativeFile = f.getPath();
            
            if ( f.getAbsolutePath().startsWith( cl.getWorkingDirectory().getAbsolutePath() ))
            {
                // so we can omit the starting characters
                relativeFile = relativeFile.substring( cl.getWorkingDirectory().getAbsolutePath().length() );
                
                if ( relativeFile.startsWith( File.separator ) )
                {
                    relativeFile = relativeFile.substring( File.separator.length() );
                }
            }
            
            // no setFile() since this screws up the working directory!
            cl.createArgument().setValue( relativeFile );
        }

    }

    public static Commandline getBaseGitCommandLine( File workingDirectory, String command )
    {
        if ( command == null || command.length() == 0) 
        {
            return null;
        }
        
        Commandline cl = new Commandline();

        cl.setExecutable( "git" );
        
        cl.createArgument().setValue( command );

        cl.setWorkingDirectory( workingDirectory.getAbsolutePath() );

        return cl;
    }

    public static int execute( Commandline cl, StreamConsumer consumer, CommandLineUtils.StringStreamConsumer stderr,
                               ScmLogger logger )
        throws ScmException
    {
        logger.info( "Executing: " + cl );
        logger.info( "Working directory: " + cl.getWorkingDirectory().getAbsolutePath() );

    	int exitCode;
        try
        {
            exitCode = CommandLineUtils.executeCommandLine( cl, consumer, stderr );
        }
        catch ( CommandLineException ex )
        {
            throw new ScmException( "Error while executing command.", ex );
        }

        return exitCode;
    }

    public static int execute( Commandline cl, CommandLineUtils.StringStreamConsumer stdout,
                               CommandLineUtils.StringStreamConsumer stderr, ScmLogger logger )
    throws ScmException
    {
        logger.info( "Executing: " + cl );
        logger.info( "Working directory: " + cl.getWorkingDirectory().getAbsolutePath() );

    	int exitCode;
        try
        {
            exitCode = CommandLineUtils.executeCommandLine( cl, stdout, stderr );
        }
        catch ( CommandLineException ex )
        {
            throw new ScmException( "Error while executing command.", ex );
        }

        return exitCode;
    }


}