package org.apache.maven.scm.provider.cvslib.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.ScmFileSet;

 import org.apache.maven.scm.provider.cvslib.repository.CvsScmProviderRepository;

 import org.apache.maven.scm.provider.cvslib.util.CvsUtil;

 import org.apache.maven.scm.providers.cvslib.settings.Settings;

 import org.codehaus.plexus.util.StringUtils;

 import org.codehaus.plexus.util.cli.CommandLineException;

 import org.codehaus.plexus.util.cli.CommandLineUtils;

 import org.codehaus.plexus.util.cli.Commandline;

 import java.io.File;

 import java.util.Enumeration;

 /**

  * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>

  * @version $Id: CvsCommandUtils.java 1057015 2011-01-09 20:10:42Z olamy $

  */

 public class CvsCommandUtils

 {

     private CvsCommandUtils()

     {

         // noop

     }

     public static boolean isCvsNT()

         throws ScmException

     {

         Commandline cl = new Commandline();

         cl.setExecutable( "cvs" );

         cl.createArg().setValue( "-v" );

         CommandLineUtils.StringStreamConsumer stdout = new CommandLineUtils.StringStreamConsumer();

         CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer();

         try

         {

             CommandLineUtils.executeCommandLine( cl, stdout, stderr );

         }

         catch ( CommandLineException e )

         {

             throw new ScmException( "Error while executing command.", e );

         }

         return stdout.getOutput().indexOf( "CVSNT" ) >= 0;

     }

     public static Commandline getBaseCommand( String commandName, CvsScmProviderRepository repo, ScmFileSet fileSet )

     {

         return getBaseCommand( commandName, repo, fileSet, null, true );

     }

     public static Commandline getBaseCommand( String commandName, CvsScmProviderRepository repo, ScmFileSet fileSet,

                                               boolean addCvsRoot )

     {

         return getBaseCommand( commandName, repo, fileSet, null, addCvsRoot );

     }

     public static Commandline getBaseCommand( String commandName, CvsScmProviderRepository repo, ScmFileSet fileSet,

                                               String options )

     {

         return getBaseCommand( commandName, repo, fileSet, options, true );

     }

     public static Commandline getBaseCommand( String commandName, CvsScmProviderRepository repo, ScmFileSet fileSet,

                                               String options, boolean addCvsRoot )

     {

         Settings settings = CvsUtil.getSettings();

         Commandline cl = new Commandline();

         cl.setExecutable( "cvs" );

         cl.setWorkingDirectory( fileSet.getBasedir().getAbsolutePath() );

         if ( Boolean.getBoolean( "maven.scm.cvs.use_compression" ) )

         {

             cl.createArg().setValue( "-z" + System.getProperty( "maven.scm.cvs.compression_level", "3" ) );

         }

         else if ( settings.getCompressionLevel() > 0 )

         {

             cl.createArg().setValue( "-z" + settings.getCompressionLevel() );

         }

         if ( !settings.isUseCvsrc() )

         {

             cl.createArg().setValue( "-f" ); // don't use ~/.cvsrc

         }

         if ( settings.isTraceCvsCommand() )

         {

             cl.createArg().setValue( "-t" );

         }

         if ( !StringUtils.isEmpty( settings.getTemporaryFilesDirectory() ) )

         {

             File tempDir = new File( settings.getTemporaryFilesDirectory() );

             if ( !tempDir.exists() )

             {

                 tempDir.mkdirs();

             }

             cl.createArg().setValue( "-T" );

             cl.createArg().setValue( tempDir.getAbsolutePath() );

         }

         if ( settings.getCvsVariables().size() > 0 )

         {

             for ( Enumeration<?> e = settings.getCvsVariables().propertyNames(); e.hasMoreElements(); )

             {

                 String key = (String) e.nextElement();

                 String value = settings.getCvsVariables().getProperty( key );

                 cl.createArg().setValue( "-s" );

                 cl.createArg().setValue( key + "=" + value );

             }

         }

         if ( addCvsRoot )

         {

             cl.createArg().setValue( "-d" );

             cl.createArg().setValue( repo.getCvsRoot() );

         }

         cl.createArg().setLine( options );

         cl.createArg().setValue( "-q" );

         cl.createArg().setValue( commandName );

         return cl;

     }

 }