Method: RQRCode::QRCode#initialize

Defined in:
lib/rqrcode/qrcode/qr_code.rb

#initialize(string, *args) ⇒ QRCode

Expects a string to be parsed in, other args are optional

# string - the string you wish to encode
# size   - the size of the qrcode (default 4)
# level  - the error correction level, can be:
   * Level :l 7%  of code can be restored
   * Level :m 15% of code can be restored
   * Level :q 25% of code can be restored
   * Level :h 30% of code can be restored (default :h)
# mode   - the mode of the qrcode (defaults to alphanumeric or byte_8bit, depending on the input data):
   * :number
   * :alphanumeric
   * :byte_8bit
   * :kanji

qr = RQRCode::QRCode.new('hello world', :size => 1, :level => :m, :mode => :alphanumeric )



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# File 'lib/rqrcode/qrcode/qr_code.rb', line 117

def initialize( string, *args )
  if !string.is_a? String
    raise QRCodeArgumentError, "The passed data is #{string.class}, not String"
  end

  options               = args.extract_options!
  level                 = (options[:level] || :h).to_sym

  if !QRERRORCORRECTLEVEL.has_key?(level)
    raise QRCodeArgumentError, "Unknown error correction level `#{level.inspect}`"
  end

  @data                 = string

  mode                  = QRMODE_NAME[(options[:mode] || '').to_sym]
  mode                  ||= QRAlphanumeric.valid_data?( @data ) ? :mode_alpha_numk : :mode_8bit_byte  # deprecate?

  max_size_array        = QRMAXDIGITS[level][mode]
  size                  = options[:size] || smallest_size_for(string, max_size_array)
  
  if size > QRUtil.max_size
    raise QRCodeArgumentError, "Given size greater than maximum possible size of #{QRUtil.max_size}"
  end

  @error_correct_level  = QRERRORCORRECTLEVEL[level]
  @version              = size
  @module_count         = @version * 4 + QRPOSITIONPATTERNLENGTH
  @modules              = Array.new( @module_count )
  @data_list            =
    case mode
    when :mode_number
      QRNumeric.new( @data )
    when :mode_alpha_numk
      QRAlphanumeric.new( @data )
    else
      QR8bitByte.new( @data )
    end

  @data_cache           = nil
  self.make
end