001    // Copyright 2006, 2007 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.internal.util;
016    
017    import java.io.PrintWriter;
018    import java.io.StringWriter;
019    
020    /**
021     * Utility for collecting the output of a {@link java.io.PrintWriter}.
022     */
023    public class PrintOutCollector
024    {
025        private final StringWriter stringWriter;
026    
027        private PrintWriter printWriter;
028    
029        public PrintOutCollector()
030        {
031            stringWriter = new StringWriter();
032            printWriter = new PrintWriter(stringWriter);
033        }
034    
035        public PrintWriter getPrintWriter()
036        {
037            return printWriter;
038        }
039    
040        /**
041         * Closes the {@link PrintWriter} and returns the accumulated text output.
042         */
043        public String getPrintOut()
044        {
045            printWriter.close();
046            return stringWriter.toString();
047    
048        }
049    
050    }