001// Copyright 2006 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
015package org.apache.tapestry5.internal.util;
016
017import org.apache.commons.codec.binary.Base64;
018
019import java.io.ByteArrayOutputStream;
020
021/**
022 * An extension of {@link ByteArrayOutputStream} that allows the final byte array to be converted to a Base64 string.
023 */
024public final class Base64OutputStream extends ByteArrayOutputStream
025{
026    public String toBase64()
027    {
028        byte[] binary = toByteArray();
029
030        byte[] base64 = Base64.encodeBase64(binary);
031
032        return new String(base64);
033    }
034}