A ruby library to create QR code. Output: PS, JPEG, PNG, EPS, TIFF, SVG.
A QR code is a 2-dimensional “barcode” of a type popular in Japan. It is intended for transferring chunks of data such as long URLs using a camera (Eg. on a phone), together with decoding software.
There is more information at en.wikipedia.org/wiki/QR_Code and at www.denso-wave.com/qrcode/index-e.html.
require "rubygem"
require "rqr"
# Block is available from version 0.2.1
RQR::QRCode.create do |qr|
qr.save("http://www.amazon.com", "path/to/qrcode.jpg")
end
#QRCode options (passed to RQR::QRCode.new())
#Use options with hash values.
#:level L:0, M:1(default), Q:2, H:3
# (determines how fault tolerant the code is.)
#:version S:0(default), M:1, L:2
#:auto_extent true|false auto extent if over version size
#:masking masking pattern 0-7, -1(default auto)
#:length data length
#:module_size module size (pixel)
#:eps_preview true|false
# This sample creates a EPS with preview.
RQR::QRCode.new(:eps_preview => true, :auto_extent=false) do |qr|
qr.save("http://www.ebay.com", "path/to/qrcode.eps")
end
# Old style (0.2.0, 0.1.1, 0.1.0)
qr = RQR::QRCode.new()
#Define a file format with extensions.
qr.save("http://www.google.com", "path/to/qrcode.jpg")
#Define a file format with symbol.
qr.save("http://www.yahoo.com", "path/to/qrcodefile", :png)
-
libjpeg
-
libpng
-
libtiff
If using OSX, use Homebrew to install libs:
brew install libjpeg brew install libpng brew install libtiff
or use Fink
sudo fink install libjpeg sudo fink install libpng sudo fink install libtiff
or use MacPorts
sudo port install jpeg sudo port install libpng sudo port install tiff
Include the gem in your Gemfile:
gem "rqr", :git => "git://github.com/felixbuenemann/rqr.git"
(The MIT License)
Copyright © 2008 Ryota Maruko, Keiko Soezima
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ‘Software’), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.