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With inspiration from other libraries

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.codec;

/**
 * Defines common encoding methods for byte array encoders.
 *
 * @version $Id$
 */
public interface BinaryEncoder extends Encoder {

    /**
     * Encodes a byte array and return the encoded data as a byte array.
     *
     * @param source
     *            Data to be encoded
     * @return A byte array containing the encoded data
     * @throws EncoderException
     *             thrown if the Encoder encounters a failure condition during the encoding process.
     */
    byte[] encode(byte[] source) throws EncoderException;
}