Class: CharDet::CharSetGroupProber

Inherits:
CharSetProber show all
Defined in:
lib/rchardet/charsetgroupprober.rb

Direct Known Subclasses

MBCSGroupProber, SBCSGroupProber

Instance Attribute Summary collapse

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

#initialize ⇒ CharSetGroupProber

Returns a new instance of CharSetGroupProber.



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# File 'lib/rchardet/charsetgroupprober.rb', line 32

def initialize
  super
  @activeNum = 0
  @probers = []
  @bestGuessProber = nil
end

Instance Attribute Details

#probers ⇒ Object

Returns the value of attribute probers.



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# File 'lib/rchardet/charsetgroupprober.rb', line 31

def probers
  @probers
end

Instance Method Details

#feed(aBuf) ⇒ Object 



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# File 'lib/rchardet/charsetgroupprober.rb', line 63

def feed(aBuf)
  for prober in @probers
    next unless prober
    next unless prober.active
    st = prober.feed(aBuf)
    next unless st
    if st == EFoundIt
      @bestGuessProber = prober
      return get_state()
    elsif st == ENotMe
      prober.active = false
      @activeNum -= 1
      if @activeNum <= 0
        @state = ENotMe
        return get_state()
      end
    end
  end
  return get_state()
end

#get_charset_name ⇒ Object 



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# File 'lib/rchardet/charsetgroupprober.rb', line 53

def get_charset_name
  if !@bestGuessProber
    get_confidence()
    if !@bestGuessProber
      return nil
    end
  end
  return @bestGuessProber.get_charset_name()
end

#get_confidence ⇒ Object 



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# File 'lib/rchardet/charsetgroupprober.rb', line 84

def get_confidence()
  st = get_state()
  if st == EFoundIt
    return 0.99
  elsif st == ENotMe
    return 0.01
  end
  bestConf = 0.0
  @bestGuessProber = nil
  for prober in @probers
    next unless prober
    unless prober.active
      $stderr << "#{prober.get_charset_name()} not active\n" if $debug
      next
    end
    cf = prober.get_confidence()
    $stderr << "#{prober.get_charset_name} confidence = #{cf}\n" if $debug
    if bestConf < cf
      bestConf = cf
      @bestGuessProber = prober
    end
  end
  return 0.0 unless @bestGuessProber
  return bestConf
end

#reset ⇒ Object 



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# File 'lib/rchardet/charsetgroupprober.rb', line 39

def reset
  super
  @activeNum = 0

  for prober in @probers
    if prober
      prober.reset()
      prober.active = true
      @activeNum += 1
    end
  end
  @bestGuessProber = nil
end