nsSJISProber Class Reference

#include <nsSJISProber.h>

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Public Member Functions
	nsSJISProber (void)
virtual	~nsSJISProber (void)
nsProbingState	HandleData (const char *aBuf, PRUint32 aLen)
const char *	GetCharSetName ()
nsProbingState	GetState (void)
void	Reset (void)
float	GetConfidence (void)
void	SetOpion ()
Protected Attributes
nsCodingStateMachine *	mCodingSM
nsProbingState	mState
SJISContextAnalysis	mContextAnalyser
SJISDistributionAnalysis	mDistributionAnalyser
char	mLastChar [2]

---

Detailed Description

Definition at line 52 of file nsSJISProber.h.

---

Constructor & Destructor Documentation

nsSJISProber::nsSJISProber

(

void

)

[inline]

Definition at line 54 of file nsSJISProber.h.

References mCodingSM, Reset(), and SJISSMModel.

                    {mCodingSM = new nsCodingStateMachine(&SJISSMModel);
                      Reset();};

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virtual nsSJISProber::~nsSJISProber

(

void

)

[inline, virtual]

Definition at line 56 of file nsSJISProber.h.

References mCodingSM.

{delete mCodingSM;};

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Member Function Documentation

const char* nsSJISProber::GetCharSetName

(

)

[inline, virtual]

Implements nsCharSetProber.

Definition at line 58 of file nsSJISProber.h.

{return "Shift_JIS";};

float nsSJISProber::GetConfidence

(

void

)

[virtual]

Implements nsCharSetProber.

Definition at line 96 of file nsSJISProber.cpp.

References CharDistributionAnalysis::GetConfidence(), JapaneseContextAnalysis::GetConfidence(), mContextAnalyser, and mDistributionAnalyser.

Referenced by HandleData().

{
  float contxtCf = mContextAnalyser.GetConfidence();
  float distribCf = mDistributionAnalyser.GetConfidence();

  return (contxtCf > distribCf ? contxtCf : distribCf);
}

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nsProbingState nsSJISProber::GetState

(

void

)

[inline, virtual]

Implements nsCharSetProber.

Definition at line 59 of file nsSJISProber.h.

References mState.

{return mState;};

nsProbingState nsSJISProber::HandleData	(	const char *	aBuf,
		PRUint32	aLen
	)			[virtual]

Implements nsCharSetProber.

Definition at line 53 of file nsSJISProber.cpp.

References eDetecting, eError, eFoundIt, eItsMe, eNotMe, eStart, GetConfidence(), nsCodingStateMachine::GetCurrentCharLen(), JapaneseContextAnalysis::GotEnoughData(), CharDistributionAnalysis::HandleOneChar(), JapaneseContextAnalysis::HandleOneChar(), mCodingSM, mContextAnalyser, mDistributionAnalyser, mLastChar, mState, nsCodingStateMachine::NextState(), and SHORTCUT_THRESHOLD.

{
  nsSMState codingState;

  for (PRUint32 i = 0; i < aLen; i++)
  {
    codingState = mCodingSM->NextState(aBuf[i]);
    if (codingState == eError)
    {
      mState = eNotMe;
      break;
    }
    if (codingState == eItsMe)
    {
      mState = eFoundIt;
      break;
    }
    if (codingState == eStart)
    {
      PRUint32 charLen = mCodingSM->GetCurrentCharLen();
      if (i == 0)
      {
        mLastChar[1] = aBuf[0];
        mContextAnalyser.HandleOneChar(mLastChar+2-charLen, charLen);
        mDistributionAnalyser.HandleOneChar(mLastChar, charLen);
      }
      else
      {
        mContextAnalyser.HandleOneChar(aBuf+i+1-charLen, charLen);
        mDistributionAnalyser.HandleOneChar(aBuf+i-1, charLen);
      }
    }
  }

  mLastChar[0] = aBuf[aLen-1];

  if (mState == eDetecting)
    if (mContextAnalyser.GotEnoughData() && GetConfidence() > SHORTCUT_THRESHOLD)
      mState = eFoundIt;

  return mState;
}

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void nsSJISProber::Reset

(

void

)

[virtual]

Implements nsCharSetProber.

Definition at line 45 of file nsSJISProber.cpp.

References eDetecting, mCodingSM, mContextAnalyser, mDistributionAnalyser, mState, CharDistributionAnalysis::Reset(), JapaneseContextAnalysis::Reset(), and nsCodingStateMachine::Reset().

Referenced by nsSJISProber().

{
  mCodingSM->Reset(); 
  mState = eDetecting;
  mContextAnalyser.Reset();
  mDistributionAnalyser.Reset();
}

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void nsSJISProber::SetOpion

(

)

[inline, virtual]

Implements nsCharSetProber.

Definition at line 62 of file nsSJISProber.h.

{};

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Field Documentation

nsCodingStateMachine* nsSJISProber::mCodingSM [protected]

Definition at line 62 of file nsSJISProber.h.

Referenced by HandleData(), nsSJISProber(), Reset(), and ~nsSJISProber().

SJISContextAnalysis nsSJISProber::mContextAnalyser [protected]

Definition at line 68 of file nsSJISProber.h.

Referenced by GetConfidence(), HandleData(), and Reset().

SJISDistributionAnalysis nsSJISProber::mDistributionAnalyser [protected]

Definition at line 69 of file nsSJISProber.h.

Referenced by GetConfidence(), HandleData(), and Reset().

char nsSJISProber::mLastChar[2] [protected]

Definition at line 71 of file nsSJISProber.h.

Referenced by HandleData().

nsProbingState nsSJISProber::mState [protected]

Definition at line 66 of file nsSJISProber.h.

Referenced by GetState(), HandleData(), and Reset().

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The documentation for this class was generated from the following files:

• nsSJISProber.h
• nsSJISProber.cpp