001    /**
002     *
003     * Copyright 2003-2004 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    
018    package org.apache.geronimo.mail.util;
019    
020    import java.io.IOException;
021    import java.io.OutputStream;
022    
023    /**
024     * Encode and decode byte arrays (typically from binary to 7-bit ASCII
025     * encodings).
026     */
027    public interface Encoder
028    {
029        int encode(byte[] data, int off, int length, OutputStream out) throws IOException;
030    
031        int decode(byte[] data, int off, int length, OutputStream out) throws IOException;
032    
033        int decode(String data, OutputStream out) throws IOException;
034    }