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JUniversalChardet is a Java encoding detector library
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* 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 (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.contextanalysis;
public class SJISContextAnalysis extends JapaneseContextAnalysis
{
////////////////////////////////////////////////////////////////
// constants
////////////////////////////////////////////////////////////////
public static final int HIRAGANA_HIGHBYTE = 0x82;
public static final int HIRAGANA_LOWBYTE_BEGIN = 0x9F;
public static final int HIRAGANA_LOWBYTE_END = 0xF1;
public static final int HIGHBYTE_BEGIN_1 = 0x81;
public static final int HIGHBYTE_END_1 = 0x9F;
public static final int HIGHBYTE_BEGIN_2 = 0xE0;
public static final int HIGHBYTE_END_2 = 0xEF;
////////////////////////////////////////////////////////////////
// methods
////////////////////////////////////////////////////////////////
public SJISContextAnalysis()
{
super();
}
@Override
protected void getOrder(Order order, final byte[] buf, int offset)
{
order.order = -1;
order.charLength = 1;
int highbyte = buf[offset] & 0xFF;
if ((highbyte >= HIGHBYTE_BEGIN_1 && highbyte <= HIGHBYTE_END_1) ||
(highbyte >= HIGHBYTE_BEGIN_2 && highbyte <= HIGHBYTE_END_2)) {
order.charLength = 2;
}
if (highbyte == HIRAGANA_HIGHBYTE) {
int lowbyte = buf[offset+1] & 0xFF;
if (lowbyte >= HIRAGANA_LOWBYTE_BEGIN &&
lowbyte <= HIRAGANA_LOWBYTE_END) {
order.order = (lowbyte - HIRAGANA_LOWBYTE_BEGIN);
}
}
}
@Override
protected int getOrder(final byte[] buf, int offset)
{
int highbyte = buf[offset] & 0xFF;
if (highbyte == HIRAGANA_HIGHBYTE) {
int lowbyte = buf[offset+1] & 0xFF;
if (lowbyte >= HIRAGANA_LOWBYTE_BEGIN &&
lowbyte <= HIRAGANA_LOWBYTE_END) {
return (lowbyte - HIRAGANA_LOWBYTE_BEGIN);
}
}
return -1;
}
}
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