package org.apache.maven.scm.provider.perforce.command.tag;

 /*

  * 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 java.util.ArrayList;

 import java.util.List;

 import org.apache.maven.scm.ScmFile;

 import org.apache.maven.scm.ScmFileStatus;

 import org.apache.maven.scm.provider.perforce.command.AbstractPerforceConsumer;

 import org.apache.regexp.RE;

 import org.apache.regexp.RESyntaxException;

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

 /**

  * @author Mike Perham

  * @author Olivier Lamy

  * @version $Id: PerforceTagConsumer.java 1056959 2011-01-09 15:02:55Z olamy $

  */

 public class PerforceTagConsumer

     extends AbstractPerforceConsumer

     implements StreamConsumer

 {

     private static final String LABEL_PATTERN = "^Label ([^ ]+) saved.$";

     private static final String SYNC_PATTERN = "^([^#]+)#\\d+ - (.*)";

     public static final int STATE_CREATE = 1;

     public static final int STATE_SYNC = 2;

     public static final int STATE_ERROR = 3;

     private int currentState = STATE_CREATE;

     private List<ScmFile> tagged = new ArrayList<ScmFile>();

     private RE syncRegexp;

     public PerforceTagConsumer()

     {

         try

         {

             syncRegexp = new RE( SYNC_PATTERN );

         }

         catch ( RESyntaxException ignored )

         {

             ignored.printStackTrace();

         }

     }

     /**

      * Return a list of Strings formatted like:

      * <p/>

      * <pre>

      * //depot/modules/cordoba/runtime-ear/pom.xml

      * //depot/modules/cordoba/runtime-ear/.runtime

      * </pre>

      */

     public List<ScmFile> getTagged()

     {

         return tagged;

     }

     /*

      * We consume the output from 'p4 label -i' and 'p4 labelsync -l <tag>

      * <files...>'

      */

     /*

      * Label maven-scm-test saved.

      */

     /*

      * //depot/modules/cordoba/runtime-ear/pom.xml#4 - added

      * //depot/modules/cordoba/runtime-ear/.runtime#1 - added

      */

     /** {@inheritDoc} */

     public void consumeLine( String line )

     {

         switch ( currentState )

         {

             case STATE_CREATE:

                 if ( !new RE( LABEL_PATTERN ).match( line ) )

                 {

                     error( line );

                     break;

                 }

                 currentState = STATE_SYNC;

                 break;

             case STATE_SYNC:

                 if ( !syncRegexp.match( line ) )

                 {

                     error( line );

                     break;

                 }

                 tagged.add( new ScmFile( syncRegexp.getParen( 1 ), ScmFileStatus.TAGGED ) );

                 break;

             default:

                 error( line );

                 break;

         }

     }

     private void error( String line )

     {

         currentState = STATE_ERROR;

         output.println( line );

     }

     public boolean isSuccess()

     {

         return currentState == STATE_SYNC;

     }

 }