Class CharDet::EUCJPProber
In: lib/tmail/vendor/rchardet-1.3/lib/rchardet/eucjpprober.rb
Parent: MultiByteCharSetProber

Methods

Public Class methods

[Source]

# File lib/tmail/vendor/rchardet-1.3/lib/rchardet/eucjpprober.rb, line 31
    def initialize
      super()
      @_mCodingSM = CodingStateMachine.new(EUCJPSMModel)
      @_mDistributionAnalyzer = EUCJPDistributionAnalysis.new()
      @_mContextAnalyzer = EUCJPContextAnalysis.new()
      reset
    end

Public Instance methods

[Source]

# File lib/tmail/vendor/rchardet-1.3/lib/rchardet/eucjpprober.rb, line 48
    def feed(aBuf)
      aLen = aBuf.length
      for i in (0...aLen)
        codingState = @_mCodingSM.next_state(aBuf[i..i])
        if codingState == EError
          $stderr << "#{get_charset_name} prober hit error at byte #{i}\n" if $debug
          @_mState = ENotMe
          break
        elsif codingState == EItsMe
          @_mState = EFoundIt
          break
        elsif codingState == EStart
          charLen = @_mCodingSM.get_current_charlen()
          if i == 0
            @_mLastChar[1] = aBuf[0..0]
            @_mContextAnalyzer.feed(@_mLastChar, charLen)
            @_mDistributionAnalyzer.feed(@_mLastChar, charLen)
          else
            @_mContextAnalyzer.feed(aBuf[i-1...i+1], charLen)
            @_mDistributionAnalyzer.feed(aBuf[i-1...i+1], charLen)
          end
        end
      end

      @_mLastChar[0] = aBuf[aLen-1..aLen-1]

      if get_state() == EDetecting
        if @_mContextAnalyzer.got_enough_data() and (get_confidence() > SHORTCUT_THRESHOLD)
          @_mState = EFoundIt
        end
      end

      return get_state()
    end

[Source]

# File lib/tmail/vendor/rchardet-1.3/lib/rchardet/eucjpprober.rb, line 44
    def get_charset_name
      return "EUC-JP"
    end

[Source]

# File lib/tmail/vendor/rchardet-1.3/lib/rchardet/eucjpprober.rb, line 83
    def get_confidence
      l = [@_mContextAnalyzer.get_confidence,@_mDistributionAnalyzer.get_confidence]
      return l.max
    end

[Source]

# File lib/tmail/vendor/rchardet-1.3/lib/rchardet/eucjpprober.rb, line 39
    def reset
      super()
      @_mContextAnalyzer.reset()
    end

[Validate]