pdf417¶ ↑

A wrapper for the pdf417lib C Library, from the README:

A library to generate the 2D barcode PDF417

Project: http://pdf417lib.sourceforge.net/
Creator: Paulo Soares (psoares@consiste.pt)
License: LGPL or MPL 1.1

This library generates a PDF417 image of the barcode in a 1x1 scale.
It requires that the displayed image be as least stretched 3 times
in the vertical direction in relation with the horizontal dimension.

Fetching the codewords only can be handy for using rtex and the pst-barcode package. If you’re using prawn or RMagic the to_blob function should help generate a complete barcode.

Much of this was based off of reading through the Nokogiri and RMagic source code. Thanks!

Usage¶ ↑

There are a few ways to use the library, at its simplest:

PDF417.encode_text("readable barcode data") => [12, 827, 120, 90, 41, 146, 30, 512, 423, 146, 90, 570]

If you want to get the raw barcode data from the PDF417 library:

barcode = PDF417.new("readable barcode data")
barcode.to_blob  # oops, wrong text
barcode.text = "ACTUAL barcode data"
barcode.to_blob

If you want to get it as an array of strings (each array element representing a line)

barcode.encoding

If you have chunky_png installed and you’d rather have a PNG

barcode.to_png

See the RDocs for more information.

Note on Patches/Pull Requests¶ ↑

• Fork the project.

• Make your feature addition or bug fix.

• Add tests for it. This is important so I don’t break it in a future version unintentionally.

• Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but

  bump version in a commit by itself I can ignore when I pull)

• Send me a pull request. Bonus points for topic branches.

Copyright¶ ↑

Copyright © 2011 jamesprior. See LICENSE for details.