Class: UniversalDetector::CharSetGroupProber

Inherits:
CharSetProber show all
Defined in:
lib/CharSetGroupProber.rb

Direct Known Subclasses

MBCSGroupProber, SBCSGroupProber

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/CharSetGroupProber.rb', line 34

def initialize
    @_mActiveNum = 0
    @_mProbers = []
    @_mBestGuessProber = nil
end

Instance Method Details

#feed(aBuf) ⇒ Object 



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# File 'lib/CharSetGroupProber.rb', line 62

def feed(aBuf)
    for prober in @_mProbers
        unless prober then next end
        unless prober.active then next end
        st = prober.feed(aBuf)
        unless st then next end
        if st == :FoundIt
            @_mBestGuessProber = prober
            return get_state()                
        elsif st == :NotMe
            prober.active = false
            @_mActiveNum -= 1
            if @_mActiveNum <= 0
                @_mState = :NotMe
                return get_state()
            end                            
        end
    end
    return get_state()
end

#get_charset_name ⇒ Object 



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# File 'lib/CharSetGroupProber.rb', line 53

def get_charset_name
    unless @_mBestGuessProber
        get_confidence()
        unless @_mBestGuessProber then return nil end
    #                @_mBestGuessProber = @_mProbers[0]
    end
    return @_mBestGuessProber.get_charset_name()
end

#get_confidence ⇒ Object 



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# File 'lib/CharSetGroupProber.rb', line 83

def get_confidence
    st = get_state()
    if st == :FoundIt
        return 0.99
    elsif st == :NotMe
        return 0.01
    end
    
    bestConf = 0.0
    @_mBestGuessProber = nil
    for prober in @_mProbers
        unless prober then next end
        unless prober.active
            if UniversalDetector::DEBUG
                p(prober.get_charset_name() + ' not active\n')
            end
            next
        end
        cf = prober.get_confidence()
        if UniversalDetector::DEBUG
            p('%s confidence = %s\n' % [prober.get_charset_name(), cf])
        end
        if bestConf < cf
            bestConf = cf
            @_mBestGuessProber = prober
        end
    end
    unless @_mBestGuessProber then return 0.0 end
    return bestConf
end

#reset ⇒ Object 



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# File 'lib/CharSetGroupProber.rb', line 40

def reset
    super
    @_mActiveNum = 0
    for prober in @_mProbers
        if prober
            prober.reset()
            prober.active = true
            @_mActiveNum += 1
        end
    end
    @_mBestGuessProber = nil
end