Class: Unidom::ArticleNumber::Code128Barcode

Inherits:
ActiveRecord::Base
  • Object
show all
Includes:
Common::Concerns::ModelExtension
Defined in:
app/models/unidom/article_number/code_128_barcode.rb

Overview

Code 128 条形码是高密度条形码符号。en.wikipedia.org/wiki/Code_128 Code 128 A 条形码 code set: ASCII characters 00 to 95 (0-9, A-Z and control codes), special characters, and FNC 1-4. Code 128 B 条形码 code set: ASCII characters 32 to 127 (0-9, A-Z, a-z), special characters, and FNC 1-4. Code 128 C 条形码 code set: 00-99 (encodes each two digits with one code) and FNC1.

Instance Method Summary collapse

Instance Method Details

#weighted_modulo_103_checksum(codes) ⇒ Object 



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# File 'app/models/unidom/article_number/code_128_barcode.rb', line 19

def weighted_modulo_103_checksum(codes)
  sum = 103
  codes.each_with_index do |char, index| sum += (char.unpack('C').first-32)*(index+1) end
  sum%103
end