A simple mrbgem to generate QR Codes.

Initialize the object with contents you want in the QR code qr = QR.new("Hello world!"), later you'll be able to change these contents by changing the value of qr.msg. To generate the bytecodes of the QR code, simply call qr.generate()("bmp" as default format and 3 as default magnify), it will return a string buffer which you can use to write the QR code file.

qr  = QR.new("Hello world!")
buf = qr.generate("bmp", 3)
File.open("qrcode_hello_world.bmp", 'w') { |file| file.write(buf) }

The example above will generate the following QR code:

NOTE: By default, the filetype is BMP, you can change this by sending the file format to the generate method, the available formats are: PNG, BMP, TIFF, PBM, SVG, JSON, DIGIT and ASCII.

Run the tests with:

./run_test.rb test

Check the LICENSE file.