Class: CharDet::EscCharSetProber

Inherits:
CharSetProber show all
Defined in:
lib/tmail/vendor/rchardet-1.3/lib/rchardet/escprober.rb

Instance Attribute Summary

Attributes inherited from CharSetProber

#active

Instance Method Summary collapse

Methods inherited from CharSetProber

#filter_high_bit_only, #filter_with_english_letters, #filter_without_english_letters, #get_state

Constructor Details

#initializeEscCharSetProber

Returns a new instance of EscCharSetProber.


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# File 'lib/tmail/vendor/rchardet-1.3/lib/rchardet/escprober.rb', line 31

def initialize
  super()
  @_mCodingSM = [ CodingStateMachine.new(HZSMModel),
                  CodingStateMachine.new(ISO2022CNSMModel),
                  CodingStateMachine.new(ISO2022JPSMModel),
                  CodingStateMachine.new(ISO2022KRSMModel)  ]
  reset()
end

Instance Method Details

#feed(aBuf) ⇒ Object


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# File 'lib/tmail/vendor/rchardet-1.3/lib/rchardet/escprober.rb', line 63

def feed(aBuf)
  aBuf.each_byte do |b|
    c = b.chr
    for codingSM in @_mCodingSM
      next unless codingSM
      next unless codingSM.active
      codingState = codingSM.next_state(c)
      if codingState == EError
        codingSM.active = false
        @_mActiveSM -= 1
        if @_mActiveSM <= 0
          @_mState = ENotMe
          return get_state()
        end
      elsif codingState == EItsMe
        @_mState = EFoundIt
        @_mDetectedCharset = codingSM.get_coding_state_machine()
        return get_state()
      end
    end
  end
  return get_state()

end

#get_charset_nameObject


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# File 'lib/tmail/vendor/rchardet-1.3/lib/rchardet/escprober.rb', line 51

def get_charset_name
  return @_mDetectedCharset
end

#get_confidenceObject


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# File 'lib/tmail/vendor/rchardet-1.3/lib/rchardet/escprober.rb', line 55

def get_confidence
  if @_mDetectedCharset
    return 0.99
  else
    return 0.00
  end
end

#resetObject


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# File 'lib/tmail/vendor/rchardet-1.3/lib/rchardet/escprober.rb', line 40

def reset
  super()
  for codingSM in @_mCodingSM
    next if not codingSM
    codingSM.active = true
    codingSM.reset()
  end
  @_mActiveSM = @_mCodingSM.length
  @_mDetectedCharset = nil
end