org.mozilla.universalchardet.prober.EUCJPProber Maven / Gradle / Ivy
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* the Initial Developer. All Rights Reserved.
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* Contributor(s):
* Kohei TAKETA (Java port)
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package org.mozilla.universalchardet.prober;
import org.mozilla.universalchardet.prober.statemachine.CodingStateMachine;
import org.mozilla.universalchardet.prober.statemachine.EUCJPSMModel;
import org.mozilla.universalchardet.prober.statemachine.SMModel;
import org.mozilla.universalchardet.prober.contextanalysis.EUCJPContextAnalysis;
import org.mozilla.universalchardet.prober.distributionanalysis.EUCJPDistributionAnalysis;
import org.mozilla.universalchardet.Constants;
public class EUCJPProber extends CharsetProber {
////////////////////////////////////////////////////////////////
// fields
////////////////////////////////////////////////////////////////
private CodingStateMachine codingSM;
private ProbingState state;
private EUCJPContextAnalysis contextAnalyzer;
private EUCJPDistributionAnalysis distributionAnalyzer;
private byte[] lastChar;
private static final SMModel smModel = new EUCJPSMModel();
////////////////////////////////////////////////////////////////
// methods
////////////////////////////////////////////////////////////////
public EUCJPProber() {
super();
this.codingSM = new CodingStateMachine(smModel);
this.contextAnalyzer = new EUCJPContextAnalysis();
this.distributionAnalyzer = new EUCJPDistributionAnalysis();
this.lastChar = new byte[2];
reset();
}
@Override
public String getCharSetName() {
return Constants.CHARSET_EUC_JP;
}
@Override
public float getConfidence() {
float contextCf = this.contextAnalyzer.getConfidence();
float distribCf = this.distributionAnalyzer.getConfidence();
return Math.max(contextCf, distribCf);
}
@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 SHORTCUT_THRESHOLD) {
this.state = ProbingState.FOUND_IT;
}
}
return this.state;
}
@Override
public final void reset() {
this.codingSM.reset();
this.state = ProbingState.DETECTING;
this.contextAnalyzer.reset();
this.distributionAnalyzer.reset();
java.util.Arrays.fill(this.lastChar, (byte)0);
}
@Override
public void setOption() {
}
}