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1   package org.apache.maven.scm.provider.perforce.command.diff;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   * http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.codehaus.plexus.util.cli.StreamConsumer;
23  
24  import java.io.PrintWriter;
25  import java.io.StringWriter;
26  
27  /**
28   * @author Mike Perham
29   * @version $Id: PerforceChangeLogConsumer.java 331276 2005-11-07 15:04:54Z
30   *          evenisse $
31   */
32  public class PerforceDiffConsumer
33      implements StreamConsumer
34  {
35      private StringWriter out = new StringWriter();
36  
37      private PrintWriter output = new PrintWriter( out );
38  
39      /*
40       * I don't see any easy way to distinguish between an error and
41       * normal diff output.  I see two possibilities:
42       *
43       * 1) Use the p4 global "-s" parameter
44       * 2) Check for a non-zero code returned by the p4 process
45       *
46       * We'll do the latter as it's simpler to implement.
47       */
48      /** {@inheritDoc} */
49      public void consumeLine( String line )
50      {
51          output.println( line );
52      }
53  
54      public String getOutput()
55      {
56          output.flush();
57          out.flush();
58          return out.toString();
59      }
60  }