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)))encode-symbol encodes TEXT into a QR-SYMBOL object.
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.
Run via ASDF and test-op, (asdf:test-system '#:cl-qrencode),
or manually using (cl-qrencode-test:run-all-tests) once the
cl-qrencode-test has been loaded.
The tests require the lisp-unit
library to be installed.
Copyright (c) 2011-2014 jnjcc, Yste.org
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.