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

 /*

  * 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.regexp.RE;

 import org.apache.regexp.RESyntaxException;

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

 import java.io.PrintWriter;

 import java.io.StringWriter;

 /**

  * @author Mike Perham

  * @version $Id: PerforceChangeLogConsumer.java 331276 2005-11-07 15:04:54Z

  *          evenisse $

  */

 public class PerforceCheckInConsumer

     implements StreamConsumer

 {

     private static final String CREATED_PATTERN = "^Change \\d+ created .+$";

     private static final String SUBMITTING_PATTERN = "^Submitting change \\d+\\.$";

     private static final String LOCKING_PATTERN = "^Locking \\d+ files \\.\\.\\.$";

     private static final String OP_PATTERN = "^[a-z]+ //[^#]+#\\d+$";

     // SCM-181 Two possible messages:

     // "Change 94821 renamed change 94823 and submitted."

     // "Change 94821 submitted."

     private static final String COMPLETE_PATTERN = "^Change \\d+ .*submitted.$";

     public static final int STATE_CREATED = 1;

     public static final int STATE_SUBMITTING = 2;

     public static final int STATE_LOCKING = 3;

     public static final int STATE_OP = 4;

     public static final int STATE_COMPLETE = 5;

     public static final int STATE_ERROR = 6;

     private StringWriter errors = new StringWriter();

     private PrintWriter errorOutput = new PrintWriter( errors );

     private int currentState = STATE_CREATED;

     private RE opRegexp;

     public PerforceCheckInConsumer()

     {

         try

         {

             opRegexp = new RE( OP_PATTERN );

         }

         catch ( RESyntaxException ignored )

         {

             ignored.printStackTrace();

         }

     }

     /*

      * Change 80835 created with 1 open file(s). Submitting change 80835.

      * Locking 1 files ... add //depot/modules/cordoba/runtime-ear/foo.xml#1

      * Change 80835 submitted.

      */

     /*

      * Submitting change 80837. Locking 1 files ... edit

      * //depot/modules/cordoba/runtime-ear/Foo.java#2 Submit validation failed --

      * fix problems then use 'p4 submit -c 80837'. 'checkstyle' validation

      * failed:

      *

      * depot/modules/cordoba/runtime-ear/Foo.java:3:1: Got an exception -

      * expecting EOF, found '}'

      */

     /** {@inheritDoc} */

     public void consumeLine( String line )

     {

         if ( line.startsWith( "... " ) )

         {

             //TODO log this somehow?

             //System.out.println("Perforce: " + line);

             return;

         }

         switch ( currentState )

         {

             case STATE_CREATED:

                 boolean created = new RE( CREATED_PATTERN ).match( line );

                 if ( created )

                 {

                     currentState++;

                     break;

                 }

                 error( line );

                 break;

             case STATE_SUBMITTING:

                 boolean submitting = new RE( SUBMITTING_PATTERN ).match( line );

                 if ( submitting )

                 {

                     currentState++;

                     break;

                 }

                 error( line );

                 break;

             case STATE_LOCKING:

                 boolean locked = new RE( LOCKING_PATTERN ).match( line );

                 if ( locked )

                 {

                     currentState++;

                     break;

                 }

                 error( line );

                 break;

             case STATE_OP:

                 boolean operation = opRegexp.match( line );

                 if ( operation )

                 {

                     break;

                 }

                 else if ( new RE( COMPLETE_PATTERN ).match( line ) )

                 {

                     currentState++;

                     break;

                 }

                 error( line );

                 break;

             case STATE_ERROR:

                 error( line );

                 break;

             default:

         }

     }

     private void error( String line )

     {

         //        if (currentState != STATE_ERROR) {

         //            System.out.println("Unable to match: " + line + " State: " +

         // currentState);

         //            new Exception().printStackTrace();

         //        }

         currentState = STATE_ERROR;

         errorOutput.println( line );

     }

     public boolean isSuccess()

     {

         return currentState == STATE_COMPLETE;

     }

     public String getOutput()

     {

         errorOutput.flush();

         errors.flush();

         return errors.toString();

     }

 }