Re: Python parser for gnuplot scripts

[Lars H. <lhe...@us...>]

Fr=E9d=E9ric Mantegazza writes:
> Hello there,
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> I'm working in a french research institute, with a guy who is writing a=
 nice=20
> GUI for Gnuplot. This GUI is written in wxPython, and is oriented for=20
> people who want to analyse data, ie who want to make fit functions, plo=
t=20
> datas and have them fitted.
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> This guy would like to be able to parse a gnuplot script. He started to=
=20
> write a parser in python, but as gnuplot as a very large set of=20
> commands/options, it is not very easy.
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> My question is: do you think it could be possible to get the C parser u=
sed=20
> in the source of gnuplot, run swig on it, add some little code around, =
and=20
> get a usable parser ? I mean, is the C parser of gnuplot store the resu=
lt=20
> of a command line in a structure which can be used easily ?
=20
 The gnuplot parser is essentially a full-custom job, and it's spread acr=
oss
 several source files. E.g. every single .trm file has its own parser for
 terminal options, and in general every source module has its own parser =
for
 the options it provides.

 A number of years ago, I started to move towards a table-driven parser,
 but got stuck somewhere along the line (the plot command is particularil=
y
 nasty in this regard ...).

 What I would like to have is a lex/yacc based scanner/parser for gnuplot=
.
 This would allow to put it into its own module, and let other apps use i=
t.
 But I think no-one here has the skills to write one.