Subject: Re: [linux-audio-dev] Command parser?
From: Richard Guenther (richard.guenther_AT_student.uni-tuebingen.de)
Date: Wed Aug 23 2000 - 11:18:15 EEST
Hi!
If you want to do sort of scripting, I think guile is the way
to go - but of course your command syntax needs to be modeled
after scheme. Its quite simple to use, just look at how GLAME
does its scripting (src/glmid/glscript.c and src/cglame.c) -
non-interactive operation is currently only supported by replacing
stdin.
Richard.
On Tue, 22 Aug 2000, Juhana Sadeharju wrote:
> Hello. I need to read simple commands from a file and execute the commands
> as they are read. What would be a good system for reading them?
>
> Actually, I think parsing a file is most difficult programming task.
> For example, a simple fscanf could not find "%i patents" string
> from the file even the file had one. Yep, I'm writing a system to
> automatically notify me if new patents has arrived in the audio classes
> and a system to keep up what patents I have already seen or downloaded.
>
> Anyway, now I need a simple language for an audio project. The file
> format would be following.
>
> command1 <float>
> command2 <int> <int> <float>
> command3 <string> <float> <float>
>
> I have started to write a simple parser which finds first command,
> and then reads as many parameters as the command has, and then another
> command. It will exit the program if an error is found. First problem
> is: how to find the commands and parameters? With fscanf(..,"%s",..)
> and fscanf(..,"%f",..), and so on? How about comment lines?
>
> Or should I use Bison? Can Guile be used? Python? What does Guile and
> Python code look a like? Any others? Would they work with the patent
> file problem? I.e., finding a string from an entire file.
>
> I would be willing to use more complex parser than what I have started
> to write because later I sure will need something more complex in my
> wave editor.
>
> Regards,
>
> Juhana
>
-- Richard Guenther <richard.guenther_AT_student.uni-tuebingen.de> WWW: http://www.anatom.uni-tuebingen.de/~richi/ The GLAME Project: http://www.glame.de/
This archive was generated by hypermail 2b28 : Wed Aug 23 2000 - 12:05:24 EEST