    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
    015    package org.apache.tapestry5.internal.util;
    016
    017    import org.apache.commons.codec.binary.Base64;
    018
    019    import 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     */
    024    public 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    }