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Barby

Barby is a Ruby library that generates barcodes in a variety of symbologies.

Its functionality is split into barcode and "outputter" objects:

  • [Barby::Barcode objects] symbologies turn data into a binary representation for a given symbology.
  • [Barby::Outputter] outputters then takes this representation and turns it into images, PDF, etc.

You can easily add a symbology without having to worry about graphical representation. If it can be represented as the usual 1D or 2D matrix of lines or squares, outputters will do that for you.

Likewise, you can easily add an outputter for a format that doesn't have one yet, and it will work with all existing symbologies.

For more information, check out [the Barby wiki] wiki.

New require policy

Barcode symbologies are no longer required automatically, so you'll have to require the ones you need.

If you need EAN-13, require 'barby/barcode/ean_13'. Full list of symbologies and filenames below.

Example

require 'barby'
require 'barby/barcode/code_128'
require 'barby/outputter/ascii_outputter'

barcode = Barby::Code128B.new('BARBY')

puts barcode.to_ascii #Implicitly uses the AsciiOutputter

## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
## #    #  #   # ##   # #   ##   ##   # ### #   # ##   ### ## #   ## ### ### ##   ### # ##
          B          A          R          B          Y

Supported symbologies

require 'barby/barcode/<filename>'
Name Filename Dependencies
Code 25 code_25 ─
├─ Interleaved code_25_interleaved ─
└─ IATA code_25_iata ─
Code 39 code_39 ─
Code 93 code_93 ─
Code 128 code_128 ─
└─ GS1 128 gs1_128 ─
EAN-13 ean_13 ─
├─ Bookland bookland ─
└─ UPC-A ean_13 ─
EAN-8 ean_8 ─
UPC/EAN supplemental, 2 & 5 digits upc_supplemental ─
QR Code qr_code rqrcode
DataMatrix (Semacode) data_matrix semacode
PDF417 pdf_417 JRuby

Outputters

require 'barby/outputter/<filename>_outputter'
filename dependencies
ascii ─
cairo cairo
html ─
pdfwriter ─
png chunky_png
prawn prawn
rmagick RMagick
svg ─

Formats supported by outputters

  • Text (mostly for testing)
  • PNG, JPEG, GIF
  • PS, EPS
  • SVG
  • PDF
  • HTML

For more information, check out [the Barby wiki] wiki.