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

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