nsBig5Prober Class Reference

#include <nsBig5Prober.h>

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Public Member Functions
	nsBig5Prober (void)
virtual	~nsBig5Prober (void)
nsProbingState	HandleData (const char *aBuf, PRUint32 aLen)
const char *	GetCharSetName ()
nsProbingState	GetState (void)
void	Reset (void)
float	GetConfidence (void)
void	SetOpion ()
Protected Member Functions
void	GetDistribution (PRUint32 aCharLen, const char *aStr)
Protected Attributes
nsCodingStateMachine *	mCodingSM
nsProbingState	mState
Big5DistributionAnalysis	mDistributionAnalyser
char	mLastChar [2]

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Detailed Description

Definition at line 45 of file nsBig5Prober.h.

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Constructor & Destructor Documentation

nsBig5Prober::nsBig5Prober

(

void

)

[inline]

Definition at line 46 of file nsBig5Prober.h.

References Big5SMModel, and mCodingSM.

00047       :
  nsBig5Prober(void){mCodingSM = new nsCodingStateMachine(&Big5SMModel);

virtual nsBig5Prober::~nsBig5Prober

(

void

)

[inline, virtual]

Definition at line 48 of file nsBig5Prober.h.

{delete mCodingSM;};

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Member Function Documentation

const char* nsBig5Prober::GetCharSetName

(

)

[inline, virtual]

Implements nsCharSetProber.

Definition at line 50 of file nsBig5Prober.h.

{return "Big5";};

float nsBig5Prober::GetConfidence

(

void

)

[virtual]

Implements nsCharSetProber.

Definition at line 87 of file nsBig5Prober.cpp.

References CharDistributionAnalysis::GetConfidence(), and mDistributionAnalyser.

Referenced by HandleData().

{
  float distribCf = mDistributionAnalyser.GetConfidence();

  return (float)distribCf;
}

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void nsBig5Prober::GetDistribution	(	PRUint32	aCharLen,
		const char *	aStr
	)			[protected]

nsProbingState nsBig5Prober::GetState

(

void

)

[inline, virtual]

Implements nsCharSetProber.

Definition at line 51 of file nsBig5Prober.h.

{return "Big5";};

nsProbingState nsBig5Prober::HandleData	(	const char *	aBuf,
		PRUint32	aLen
	)			[virtual]

Implements nsCharSetProber.

Definition at line 47 of file nsBig5Prober.cpp.

References eDetecting, eError, eFoundIt, eItsMe, eNotMe, eStart, GetConfidence(), nsCodingStateMachine::GetCurrentCharLen(), CharDistributionAnalysis::GotEnoughData(), CharDistributionAnalysis::HandleOneChar(), mCodingSM, 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];
        mDistributionAnalyser.HandleOneChar(mLastChar, charLen);
      }
      else
        mDistributionAnalyser.HandleOneChar(aBuf+i-1, charLen);
    }
  }

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

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

  return mState;
}

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void nsBig5Prober::Reset

(

void

)

[virtual]

Implements nsCharSetProber.

Definition at line 40 of file nsBig5Prober.cpp.

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

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

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void nsBig5Prober::SetOpion

(

)

[inline, virtual]

Implements nsCharSetProber.

Definition at line 54 of file nsBig5Prober.h.

{};

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Field Documentation

nsCodingStateMachine* nsBig5Prober::mCodingSM [protected]

Definition at line 59 of file nsBig5Prober.h.

Referenced by HandleData(), nsBig5Prober(), and Reset().

Big5DistributionAnalysis nsBig5Prober::mDistributionAnalyser [protected]

Definition at line 63 of file nsBig5Prober.h.

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

char nsBig5Prober::mLastChar[2] [protected]

Definition at line 64 of file nsBig5Prober.h.

Referenced by HandleData().

nsProbingState nsBig5Prober::mState [protected]

Definition at line 60 of file nsBig5Prober.h.

Referenced by HandleData(), and Reset().

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

• nsBig5Prober.h
• nsBig5Prober.cpp