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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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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.poi.hwpf.model;

/**
 * Normally PropertyNodes only ever work in characters, but
 *  a few cases actually store bytes, and this lets everything
 *  still work despite that.
 * It handles the conversion as required between bytes
 *  and characters.
 *
 *  @deprecated byte positions shall not be saved in memory
 */
@Deprecated
public abstract class BytePropertyNode> extends PropertyNode {
    private final int startBytes;
    private final int endBytes;

    protected BytePropertyNode( BytePropertyNode other ) {
        super(other);
        startBytes = other.startBytes;
        endBytes = other.endBytes;
    }


    protected BytePropertyNode( int charStart, int charEnd, Object buf ) {
        super( charStart, charEnd, buf );

        if ( charStart > charEnd )
            throw new IllegalArgumentException( "charStart (" + charStart
                    + ") > charEnd (" + charEnd + ")" );

        this.startBytes = -1;
        this.endBytes = -1;
    }

    /**
     * @deprecated Though bytes are actually stored in file, it is advised to
     *             use char positions for all operations. Including save
     *             operations, because only char positions are preserved.
     */
    @Deprecated
    public int getStartBytes()
    {
        return startBytes;
    }

    /**
     * @deprecated Though bytes are actually stored in file, it is advised to
     *             use char positions for all operations. Including save
     *             operations, because only char positions are preserved.
     */
    @Deprecated
    public int getEndBytes()
    {
        return endBytes;
    }
}