Class: CharDet::SJISProber

### Home Classes Methods

### In Files

- lib/tmail/vendor/rchardet-1.3/lib/rchardet/sjisprober.rb

### Parent

CharDet::MultiByteCharSetProber

### Methods

- ::new
- #feed
- #get_charset_name
- #get_confidence
- #reset

### Files

- CHANGES
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No matching classes.

# CharDet::SJISProber

### Public Class Methods

new() click to toggle source

    # File lib/tmail/vendor/rchardet-1.3/lib/rchardet/sjisprober.rb, line 31
    def initialize
      super()
      @_mCodingSM = CodingStateMachine.new(SJISSMModel)
      @_mDistributionAnalyzer = SJISDistributionAnalysis.new()
      @_mContextAnalyzer = SJISContextAnalysis.new()
      reset()
    end

### Public Instance Methods

feed(aBuf) click to toggle source

    # File lib/tmail/vendor/rchardet-1.3/lib/rchardet/sjisprober.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[2 - charLen..-1], charLen)
            @_mDistributionAnalyzer.feed(@_mLastChar, charLen)
          else
            @_mContextAnalyzer.feed(aBuf[i + 1 - charLen ... i + 3 - charLen], 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

get_charset_name() click to toggle source

    # File lib/tmail/vendor/rchardet-1.3/lib/rchardet/sjisprober.rb, line 44
    def get_charset_name
      return "SHIFT_JIS"
    end

get_confidence() click to toggle source

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

reset() click to toggle source

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

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