Looking for a small 1d barcode generator

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MaBe
Ok, got some time to work on this again and got some question:

Q: How to pass a buffer and use the Graphics inside a module?

Q: Lookup tables for char to barcode fillRect are very large, what is memory wise the best way to store them.

Note: Got a EAN13 running and on the way for a module
```
    var charset = [0, 11, 13, 14, 19, 25, 28, 21, 22, 26],
        map = [13, 39, 114, 25, 51, 102, 19, 27, 108, 61, 33, 66, 35, 29, 92,
               49, 57,  78, 47,  5,  80, 59, 17,  68, 55, 9, 72, 11, 23, 116],

 //used  toString(2).pad(7,"0")  to lookup  the bitcode for chars
```
compared to the original source

Lookup table for CODE128 is much bigger.

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Robin in reply to @MaBe

Sun 2021.05.02

Hi @MaBe several years ago, I had similar questions and several chimed in to solve with snippets and links regarding 'Flat Strings'. Here was Gordon's well described response:

ref post #2 http://forum.espruino.com/comments/14455141/
entire thread Definition of a flat string and example

Some sample snippets:

Flat String creation failing

'Q: How to pass a buffer and use the Graphics inside a module?'

Is the question on how to process the image creation within the developer designed module, and access that ('pass a buffer') content inside the module, back at the console side of the WebIDE?

Use the array buffer to access the flat string, similar when using a pointer in 'C' perhaps?
(See last pp in Gordon's response in the first link - ref post #2)

Nicely done, if I might add! . . .

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