Class: ZXing::Decoder

Inherits:
Object
  • Object
show all
Defined in:
lib/zxing/decoder.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ Decoder

Returns a new instance of Decoder.



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# File 'lib/zxing/decoder.rb', line 50

def initialize(file)
  self.file = file
end

Instance Attribute Details

#file ⇒ Object

Returns the value of attribute file.



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# File 'lib/zxing/decoder.rb', line 24

def file
  @file
end

Class Method Details

.decode(file) ⇒ Object 



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# File 'lib/zxing/decoder.rb', line 32

def self.decode(file)
  decode!(file)
rescue UndecodableError
  nil
end

.decode!(file) ⇒ Object 



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# File 'lib/zxing/decoder.rb', line 26

def self.decode!(file)
  new(file).decode
rescue NativeException
  raise UndecodableError
end

.decode_all(file) ⇒ Object 



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# File 'lib/zxing/decoder.rb', line 44

def self.decode_all(file)
  decode_all!(file)
rescue UndecodableError
  []
end

.decode_all!(file) ⇒ Object 



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# File 'lib/zxing/decoder.rb', line 38

def self.decode_all!(file)
  new(file).decode_all
rescue NativeException
  raise UndecodableError
end

Instance Method Details

#decode ⇒ Object 



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# File 'lib/zxing/decoder.rb', line 58

def decode
  reader.decode(bitmap).to_s
end

#decode_all ⇒ Object 



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# File 'lib/zxing/decoder.rb', line 62

def decode_all
  multi_barcode_reader = GenericMultipleBarcodeReader.new(reader)

  multi_barcode_reader.decode_multiple(bitmap).map do |result|
    result.get_text
  end
end

#reader ⇒ Object 



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# File 'lib/zxing/decoder.rb', line 54

def reader
  MultiFormatReader.new
end