Android Open Source - texthem E U C J P Distribution Analysis

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The source code is released under:

GNU General Public License

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Java Source Code

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1/*from   w  w  w .  j  a va2 s  .com*/
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Kohei TAKETA <k-tak@void.in> (Java port)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

package org.mozilla.universalchardet.prober.distributionanalysis;

public class EUCJPDistributionAnalysis extends JISDistributionAnalysis
{
    ////////////////////////////////////////////////////////////////
    // constants
    ////////////////////////////////////////////////////////////////
    public static final int HIGHBYTE_BEGIN = 0xA1;
    public static final int HIGHBYTE_END = 0xFE;
    public static final int LOWBYTE_BEGIN = 0xA1;
    public static final int LOWBYTE_END = 0xFE;
    

    ////////////////////////////////////////////////////////////////
    // methods
    ////////////////////////////////////////////////////////////////
    public EUCJPDistributionAnalysis()
    {
        super();
    }

    @Override
    protected int getOrder(final byte[] buf, int offset)
    {
        int highbyte = buf[offset] & 0xFF;
        if (highbyte >= HIGHBYTE_BEGIN) {
            int lowbyte = buf[offset+1] & 0xFF;
            return (94 * (highbyte - HIGHBYTE_BEGIN) + lowbyte - LOWBYTE_BEGIN);
        } else {
            return -1;
        }
    }
}

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