001package org.apache.maven.scm.provider.perforce.command.diff;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 * http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import org.codehaus.plexus.util.cli.StreamConsumer;
023
024import java.io.PrintWriter;
025import java.io.StringWriter;
026
027/**
028 * @author Mike Perham
029 * @version $Id: PerforceChangeLogConsumer.java 331276 2005-11-07 15:04:54Z
030 *          evenisse $
031 */
032public class PerforceDiffConsumer
033    implements StreamConsumer
034{
035    private StringWriter out = new StringWriter();
036
037    private PrintWriter output = new PrintWriter( out );
038
039    /*
040     * I don't see any easy way to distinguish between an error and
041     * normal diff output.  I see two possibilities:
042     *
043     * 1) Use the p4 global "-s" parameter
044     * 2) Check for a non-zero code returned by the p4 process
045     *
046     * We'll do the latter as it's simpler to implement.
047     */
048    /** {@inheritDoc} */
049    public void consumeLine( String line )
050    {
051        output.println( line );
052    }
053
054    public String getOutput()
055    {
056        output.flush();
057        out.flush();
058        return out.toString();
059    }
060}