/* ***** BEGIN LICENSE BLOCK *****
* 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
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*
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* for the specific language governing rights and limitations under the
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* The Original Code is mozilla.org code.
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* The Initial Developer of the Original Code is
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* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
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* Contributor(s):
* Kohei TAKETA <k-tak@void.in> (Java port)
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package org.mozilla.universalchardet.prober;
import org.mozilla.universalchardet.prober.statemachine.CodingStateMachine;
import org.mozilla.universalchardet.prober.statemachine.SMModel;
import org.mozilla.universalchardet.prober.statemachine.HZSMModel;
import org.mozilla.universalchardet.prober.statemachine.ISO2022CNSMModel;
import org.mozilla.universalchardet.prober.statemachine.ISO2022JPSMModel;
import org.mozilla.universalchardet.prober.statemachine.ISO2022KRSMModel;
public class EscCharsetProber extends CharsetProber
{
////////////////////////////////////////////////////////////////
// fields
////////////////////////////////////////////////////////////////
private CodingStateMachine[] codingSM;
private int activeSM;
private ProbingState state;
private String detectedCharset;
private static final HZSMModel hzsModel = new HZSMModel();
private static final ISO2022CNSMModel iso2022cnModel = new ISO2022CNSMModel();
private static final ISO2022JPSMModel iso2022jpModel = new ISO2022JPSMModel();
private static final ISO2022KRSMModel iso2022krModel = new ISO2022KRSMModel();
////////////////////////////////////////////////////////////////
// methods
////////////////////////////////////////////////////////////////
public EscCharsetProber()
{
super();
this.codingSM = new CodingStateMachine[4];
this.codingSM[0] = new CodingStateMachine(hzsModel);
this.codingSM[1] = new CodingStateMachine(iso2022cnModel);
this.codingSM[2] = new CodingStateMachine(iso2022jpModel);
this.codingSM[3] = new CodingStateMachine(iso2022krModel);
reset();
}
@Override
public String getCharSetName()
{
return this.detectedCharset;
}
@Override
public float getConfidence()
{
return 0.99f;
}
@Override
public ProbingState getState()
{
return this.state;
}
@Override
public ProbingState handleData(byte[] buf, int offset, int length)
{
int codingState;
int maxPos = offset + length;
for (int i=offset; i<maxPos && this.state==ProbingState.DETECTING; ++i) {
for (int j=this.activeSM-1; j>=0; --j) {
codingState = this.codingSM[j].nextState(buf[i]);
if (codingState == SMModel.ERROR) {
--this.activeSM;
if (this.activeSM <= 0) {
this.state = ProbingState.NOT_ME;
return this.state;
} else if (j != this.activeSM) {
CodingStateMachine t;
t = this.codingSM[this.activeSM];
this.codingSM[this.activeSM] = this.codingSM[j];
this.codingSM[j] = t;
}
} else if (codingState == SMModel.ITSME) {
this.state = ProbingState.FOUND_IT;
this.detectedCharset = this.codingSM[j].getCodingStateMachine();
return this.state;
}
}
}
return this.state;
}
@Override
public void reset()
{
this.state = ProbingState.DETECTING;
for (int i=0; i<this.codingSM.length; ++i) {
this.codingSM[i].reset();
}
this.activeSM = this.codingSM.length;
this.detectedCharset = null;
}
@Override
public void setOption()
{}
}