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alexforencich / python-hpgl

Python HPGL parsing library
MIT License
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Parsing Error #3

Open tatarize opened 4 years ago

tatarize commented 4 years ago

I tried to use this as a quick helpful example but it failed to parse the hpgl I threw at it:

https://github.com/bblanchon/HpglViewer/blob/master/Hpgl/Examples/GL-C-F.plt

Throws an error. First, feeding it the filename directly it loads it with flags rb which returns read as bytes. Exception: Unknown HPGL command (b'IN')

So opening the file to start without the b flag. p = parse_hpgl(open(filename, 'r'))

It throws a different error: Exception: Unknown HPGL command (94)

It fails at the line: PU-6580,5096;

It assumes PU can't have operands and is always followed by PA or similar.

K40Nano/K40Tools#5

I whipped up a pretty reasonable regex parser, though I'm missing a couple things like INPU; as a command.

alexforencich commented 3 years ago

Just reworked things so your file works. I probably need to do some more work on the parsing logic though, it seems that HPGL allows a lot more flexibility including omitting semicolons and using spaces instead of commas.