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Re: [LUG] 2D barcode printing daemon



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Adrian Midgley wrote:
> One day I think there will b a need for a daemon that accepts a
> formatted text file, and turns it into a 2 dimensional bar code
> and prints it on a laser printer.
>
> At a guess the text file would be like VCF, with the possibility
> for the tags to be increased, and presumably a configuration
> file somewhere that would tell the daemon what to do with a new
> tag, so the whole thing could be data driven.
>
> Am I describing something that exists?

I think you are describing a specific application, although I
guess a markup language might be general enough...

I would have thought the natural thing would be to incorporate
it into a printer driver, or print queue as a filter, rather
than create a specific daemon. Or embed a graphic at the right
place in the original document before printing.

Any markup would probably want to place the barcode carefully on
the printed paper, so why not fiddle at the Postscript driver
level for that.

> Oh, I think it should be in Perl or Python, so that the OS
> running the machine it is on is of little significance.

GNU barcode is fairly widely ported and turns out Postscript or
EPS from C.

Perl GD supports barcode to PNG and JPEG.

Kbarcode seems to be aimed at businesses wanting to barcode
thousands of sequential items.
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