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Intro to Ada Bar Codes
======================
The project Ada Bar Codes provides a package for generating
various types of bar codes, including 2D bar codes like the QR code,
on different output formats, such as PDF, SVG or bitmaps.
The creation of a bar code is as simple as this small procedure:
with Ada.Text_IO, Bar_Codes, Bar_Codes_Media;
procedure Small_Demo is
use Ada.Text_IO;
svg : File_Type;
begin
Create (svg, Out_File, "qr_code.svg");
Put_Line
(svg,
Bar_Codes_Media.SVG_Bar_Code
(Bar_Codes.Code_QR_Low, 100.0, 100.0, "mm", "Hello"));
Close (svg);
end Small_Demo;
Contents
========
Ada Bar Codes
=============
- ada_bar_codes.gpr : project file for the AdaCore GNAT compiler
- ada_bar_codes.prj : project file for the PTC ObjectAda compiler
- ada_bar_codes.txt : this file
- bar_codes.ads : Bar_Codes package specification
- bar_codes.adb : Bar_Codes package body
- bar_codes-encode* : separate sub-packages of Bar_Codes
- bar_codes_media.ad* : a few simple implementations examples for
the SVG, PDF, PBM and PNG formats
- demo/bar_codes_demo.adb : demo procedure
- test/bar_codes_test.adb : test procedure (produces lots of files!)
Warning & legal
===============
There is NO WARRANTY in this software. Read copyright notice in bar_codes.ads.
Portability
===========
This software can be compiled for any target machine, and with any compiler
for Ada 2012 or later language versions.
How to build Ada Bar Codes and its demo
=======================================
Here is how to build with GNAT/GCC:
- type "gprbuild -P ada_bar_codes" in the command line
or
- type "gnatmake -P ada_bar_codes" in the command line
or
- open the ada_bar_codes.gpr file (will launch GNAT Studio),
press F4 (Build)
Here is how to build with ObjectAda (tested with v.9.2):
- open the ada_bar_codes_oa.prj file, press F7 (Build)
The project builds bar_codes_demo[.exe] and bar_codes_test[.exe].
Thanks to...
============
Giuseppe Cannone, for the inspiration and advice.
Jeffrey R. Carter, for the first implementation on raster graphics
and as a Web service: https://github.com/jrcarter/Gnoga_Bar_Codes
Nicolas Boulenguez <nicolas@debian.org>,
for numerous suggestions and improvements.
On the Web
==========
Home page: http://ada-bar-codes.sf.net/
Project page: http://sf.net/projects/ada-bar-codes/
Mirror: https://github.com/zertovitch/ada-bar-codes
Alire crate: https://alire.ada.dev/crates/bar_codes
--
Enjoy!
Gautier de Montmollin
gautier.de.montmollin, at: gmail dot com.
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