Class: Barcodes::Symbology::Code39Extended

Inherits:
Code39
  • Object
show all
Defined in:
lib/barcodes/symbology/code39extended.rb

Overview

This class represents the Code 39 Extended symbology. Code 39 Extended can encode all standard ASCII characters.

More info: en.wikipedia.org/wiki/Code_39

Direct Known Subclasses

Code39ExtendedMod43

Instance Attribute Summary

Attributes inherited from Base

#alpha, #bar_height, #bar_width, #caption_height, #caption_size, #captioned, #color, #data

Instance Method Summary collapse

Methods inherited from Code39

#caption_data, charset, #initialize, valueset

Methods inherited from Base

#caption_data, charset, #encoded_data, #height, #initialize, #quiet_zone_width, valueset, #width

Constructor Details

This class inherits a constructor from Barcodes::Symbology::Code39

Instance Method Details

#_data ⇒ Object

Returns prepared barcode data by replacing extended characters



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# File 'lib/barcodes/symbology/code39extended.rb', line 40

def _data
  prepared_data = ""
  
  self.data.each_byte do |character|
    case character
    when 0
      prepared_data += '%' + 'U'
    when 1..26
      prepared_data += '$' + (character + 64).chr
    when 27..31
      prepared_data += '%' + (character + 38).chr
    when 127
      prepared_data += '%' + 'T'
    when '!'.bytes.to_a[0]
      prepared_data += '/' + 'A'
    when '"'.bytes.to_a[0]
      prepared_data += '/' + 'B'
    when '#'.bytes.to_a[0]
      prepared_data += '/' + 'C'
    when '$'.bytes.to_a[0]
      prepared_data += '/' + 'D'
    when '%'.bytes.to_a[0]
      prepared_data += '/' + 'E'
    when '&'.bytes.to_a[0]
      prepared_data += '/' + 'F'
    when '\''.bytes.to_a[0]
      prepared_data += '/' + 'G'
    when '('.bytes.to_a[0]
      prepared_data += '/' + 'H'
    when ')'.bytes.to_a[0]
      prepared_data += '/' + 'I'
    when '*'.bytes.to_a[0]
      prepared_data += '/' + 'J'
    when '+'.bytes.to_a[0]
      prepared_data += '/' + 'K'
    when ','.bytes.to_a[0]
      prepared_data += '/' + 'L'
    when '/'.bytes.to_a[0]
      prepared_data += '/' + 'O'
    when ':'.bytes.to_a[0]
      prepared_data += '/' + 'Z'
    when ';'.bytes.to_a[0]
      prepared_data += '%' + 'F'
    when '<'.bytes.to_a[0]
      prepared_data += '%' + 'G'
    when '='.bytes.to_a[0]
      prepared_data += '%' + 'H'
    when '>'.bytes.to_a[0]
      prepared_data += '%' + 'I'
    when '?'.bytes.to_a[0]
      prepared_data += '%' + 'J'
    when '@'.bytes.to_a[0]
      prepared_data += '%' + 'V'
    when '['.bytes.to_a[0]
      prepared_data += '%' + 'K'
    when '\\'.bytes.to_a[0]
      prepared_data += '%' + 'L'
    when ']'.bytes.to_a[0]
      prepared_data += '%' + 'M'
    when '^'.bytes.to_a[0]
      prepared_data += '%' + 'N'
    when '_'.bytes.to_a[0]
      prepared_data += '%' + '0'
    when '`'.bytes.to_a[0]
      prepared_data += '%' + 'W'
    when 97..122
      prepared_data += '+' + character.chr.upcase
    when '{'.bytes.to_a[0]
      prepared_data += '%' + 'P'
    when '|'.bytes.to_a[0]
      prepared_data += '%' + 'Q'
    when '}'.bytes.to_a[0]
      prepared_data += '%' + 'R'
    when '~'.bytes.to_a[0]
      prepared_data += '%' + 'S'
    else
      prepared_data += character.chr
    end
  end
  
  return prepared_data
end

#formatted_data ⇒ Object

Start character + prepared data + stop character



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# File 'lib/barcodes/symbology/code39extended.rb', line 19

def formatted_data
  @start_character + self._data + @stop_character
end

#valid? ⇒ Boolean

Determines whether or not the barcode data to be encoded is valid.

Returns:

  • (Boolean) 


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# File 'lib/barcodes/symbology/code39extended.rb', line 25

def valid?
  valid = self.data.length > 0 ? true : false

  self._data.each_byte do |char|
    if self._encode_character(char).nil?
      return false
    end
  end

  return valid
end