    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.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 */
    025public 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}