org.mozilla.universalchardet.prober.distributionanalysis.EUCJPDistributionAnalysis Maven / Gradle / Ivy
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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* 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
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* 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.
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* 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 (Java port)
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* 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"),
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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;
}
}
}