Aegisub/aegisub/universalchardet/nsEUCJPProber.cpp
Amar Takhar a067bd560d SVN Transition Step 3/7
1. cd aegisub/
  2. svn mv *cpp *h src/
  3. svn mv Makefile.am MatroskaParser.c auto4_perldata.inc bitmaps boost \
     changelog.txt config gl include libosxutil libresrc md5.c msvc mythes.cxx \
     mythes.hxx res.rc src/
  4. cd ..
  5. svn mv FFmpegSource2/ INSTALL Makefile.am README  acinclude.m4 \
     autogen.sh automation/ bin build configure.in desktop dummy.txt lib \
     libass/ m4macros/ packages/ po/ scripts/ universalchardet/ aegisub/
  6. mkdir -p docs/wiki_convert
  7. svn add docs/wiki_convert
  8. cd docs
  9. svn mv aegisub_convert_docs.pl convert.bat output wiki_convert/

* See r2749 for full description.

Originally committed to SVN as r2752.
2009-03-08 08:30:39 +00:00

104 lines
3.3 KiB
C++

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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,
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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.
*
* The Initial Developer of the Original Code is
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*
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* in which case the provisions of the GPL or the LGPL are applicable instead
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// for japanese encoding, obeserve characteristic:
// 1, kana character (or hankaku?) often have hight frequency of appereance
// 2, kana character often exist in group
// 3, certain combination of kana is never used in japanese language
#include "nsEUCJPProber.h"
void nsEUCJPProber::Reset(void)
{
mCodingSM->Reset();
mState = eDetecting;
mContextAnalyser.Reset();
mDistributionAnalyser.Reset();
}
nsProbingState nsEUCJPProber::HandleData(const char* aBuf, PRUint32 aLen)
{
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, charLen);
mDistributionAnalyser.HandleOneChar(mLastChar, charLen);
}
else
{
mContextAnalyser.HandleOneChar(aBuf+i-1, 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;
}
float nsEUCJPProber::GetConfidence(void)
{
float contxtCf = mContextAnalyser.GetConfidence();
float distribCf = mDistributionAnalyser.GetConfidence();
return (contxtCf > distribCf ? contxtCf : distribCf);
}