    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.ByteArrayInputStream;
    020
    021    /**
    022     * An extension of {@link ByteArrayInputStream} that is initialized from a Base64 input stream (rather than from a byte
    023     * array).
    024     */
    025    public class Base64InputStream extends ByteArrayInputStream
    026    {
    027        public Base64InputStream(String base64)
    028        {
    029            super(decode(base64));
    030        }
    031
    032        private static byte[] decode(String base64)
    033        {
    034            byte[] array = base64.getBytes();
    035
    036            return Base64.decodeBase64(array);
    037        }
    038    }