[cclib-devel] progress support

[Adam T. <a-t...@st...>]

So I added an example progress class called TextProgress which basically 
prints out bars saying how much progress has been made, and made necessary 
changes to G03 parser to allow use of this class.

If you want to use it, first create an instance, and pass that instance to the 
G03 class along with the filename:

progress=TextProgress()
p=G03(filename,progress)
p.parse()

I changed the __init__ function of G03 to accept any amount of arguments, and 
pass that onto the baseclass. See the SVN diffs for more details. This allows 
the user of cclib to not specify a parser and continue as before.

Unfortunately, not all of this message is good news. Calling G03 with a 
TextParser adds a 20-25% overhead: 4 seconds becomes 5ish, 21 seconds becomes 
more like 26, etc. I think the problem is that it calls the 
progress.update(step) far too frequently. It may make more sense to identify 
the slower parts of the parsing class, and only add progress.update there, 
but I don't know for sure.

Any ideas on how to improve this?

Adam



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