git clone ''

(ql:quickload :cl-qrencode)


QR code 2005 encoder in Common Lisp


There are some examples in demo.lisp. More detailed explanations are listed below.

(in-package :cl-qrencode)
(defclass qr-symbol ()
  (matrix modules))
(defun dark-module-p (matrix i j))

QR code is represented by a QR-SYMBOL object in this package, where MATRIX is an MODULES * MODULES array, and the color of each module (dark or light) is indicated by dark-module-p.

(use-package :cl-qrencode)
(defun encode-symbol (text &key (version 1) (level :level-m) (mode nil)))
(defun encode-symbol-bytes (bytes &key (version 1) (level :level-m) (mode nil)))
```VERSION``` may be adapted to accommodate the encoding data.
```LEVEL``` is the error correction level, which should be one of ```:level-l```,
```:level-m```, ```:level-q```, or ```:level-h```.
For most of the time, ```MODE``` should be left ```nil```.

(defun encode-png (text &key (fpath "qrcode.png") (version 1) (level :level-m)
                   (mode nil) (pixsize 9) (margin 8)))

This package also supports writing QR-SYMBOL into png files. PIXSIZE is number of pixels for each QR-SYMBOL module, MARGIN is number of pixels for each side of the QRcode quiet zone.


Copyright (c) 2011-2014 jnjcc,

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.