/* ***** 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 Universal charset detector code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2001
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Shy Shalom <shooshX@gmail.com>
* 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
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* 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;
import org.mozilla.universalchardet.prober.sequence.SequenceModel;
import org.mozilla.universalchardet.prober.sequence.Win1251Model;
import org.mozilla.universalchardet.prober.sequence.Koi8rModel;
import org.mozilla.universalchardet.prober.sequence.Latin5Model;
import org.mozilla.universalchardet.prober.sequence.MacCyrillicModel;
import org.mozilla.universalchardet.prober.sequence.Ibm866Model;
import org.mozilla.universalchardet.prober.sequence.Ibm855Model;
import org.mozilla.universalchardet.prober.sequence.Latin7Model;
import org.mozilla.universalchardet.prober.sequence.Win1253Model;
import org.mozilla.universalchardet.prober.sequence.Latin5BulgarianModel;
import org.mozilla.universalchardet.prober.sequence.Win1251BulgarianModel;
import org.mozilla.universalchardet.prober.sequence.HebrewModel;
import java.nio.ByteBuffer;
public class SBCSGroupProber extends CharsetProber
{
////////////////////////////////////////////////////////////////
// fields
////////////////////////////////////////////////////////////////
private ProbingState state;
private CharsetProber[] probers;
private boolean[] isActive;
private int bestGuess;
private int activeNum;
// models
private static final SequenceModel win1251Model = new Win1251Model();
private static final SequenceModel koi8rModel = new Koi8rModel();
private static final SequenceModel latin5Model = new Latin5Model();
private static final SequenceModel macCyrillicModel = new MacCyrillicModel();
private static final SequenceModel ibm866Model = new Ibm866Model();
private static final SequenceModel ibm855Model = new Ibm855Model();
private static final SequenceModel latin7Model = new Latin7Model();
private static final SequenceModel win1253Model = new Win1253Model();
private static final SequenceModel latin5BulgarianModel = new Latin5BulgarianModel();
private static final SequenceModel win1251BulgarianModel = new Win1251BulgarianModel();
private static final SequenceModel hebrewModel = new HebrewModel();
////////////////////////////////////////////////////////////////
// methods
////////////////////////////////////////////////////////////////
public SBCSGroupProber()
{
super();
this.probers = new CharsetProber[13];
this.isActive = new boolean[13];
this.probers[0] = new SingleByteCharsetProber(win1251Model);
this.probers[1] = new SingleByteCharsetProber(koi8rModel);
this.probers[2] = new SingleByteCharsetProber(latin5Model);
this.probers[3] = new SingleByteCharsetProber(macCyrillicModel);
this.probers[4] = new SingleByteCharsetProber(ibm866Model);
this.probers[5] = new SingleByteCharsetProber(ibm855Model);
this.probers[6] = new SingleByteCharsetProber(latin7Model);
this.probers[7] = new SingleByteCharsetProber(win1253Model);
this.probers[8] = new SingleByteCharsetProber(latin5BulgarianModel);
this.probers[9] = new SingleByteCharsetProber(win1251BulgarianModel);
HebrewProber hebprober = new HebrewProber();
this.probers[10] = hebprober;
this.probers[11] = new SingleByteCharsetProber(hebrewModel, false, hebprober);
this.probers[12] = new SingleByteCharsetProber(hebrewModel, true, hebprober);
hebprober.setModalProbers(this.probers[11], this.probers[12]);
reset();
}
@Override
public String getCharSetName()
{
if (this.bestGuess == -1) {
getConfidence();
if (this.bestGuess == -1) {
this.bestGuess = 0;
}
}
return this.probers[this.bestGuess].getCharSetName();
}
@Override
public float getConfidence()
{
float bestConf = 0.0f;
float cf;
if (this.state == ProbingState.FOUND_IT) {
return 0.99f;
} else if (this.state == ProbingState.NOT_ME) {
return 0.01f;
} else {
for (int i=0; i<probers.length; ++i) {
if (!this.isActive[i]) {
continue;
}
cf = this.probers[i].getConfidence();
if (bestConf < cf) {
bestConf = cf;
this.bestGuess = i;
}
}
}
return bestConf;
}
@Override
public ProbingState getState()
{
return this.state;
}
@Override
public ProbingState handleData(byte[] buf, int offset, int length)
{
ProbingState st;
do {
ByteBuffer newbuf = filterWithoutEnglishLetters(buf, offset, length);
if (newbuf.position() == 0) {
break;
}
for (int i=0; i<this.probers.length; ++i) {
if (!this.isActive[i]) {
continue;
}
st = this.probers[i].handleData(newbuf.array(), 0, newbuf.position());
if (st == ProbingState.FOUND_IT) {
this.bestGuess = i;
this.state = ProbingState.FOUND_IT;
break;
} else if (st == ProbingState.NOT_ME) {
this.isActive[i] = false;
--this.activeNum;
if (this.activeNum <= 0) {
this.state = ProbingState.NOT_ME;
break;
}
}
}
} while (false);
return this.state;
}
@Override
public void reset()
{
this.activeNum = 0;
for (int i=0; i<this.probers.length; ++i) {
this.probers[i].reset();
this.isActive[i] = true;
++this.activeNum;
}
this.bestGuess = -1;
this.state = ProbingState.DETECTING;
}
@Override
public void setOption()
{}
}