Regular Expressions Problem
Brian Szmyd
szmyd at colostate.edu
Thu Sep 9 23:18:56 EDT 2004
Oriana wrote:
> Hi!
>
> I'm trying to 'clean up' this source file using regular expressions
> in Python. My problem is, that when I try to delete extra lines, my
> code fails. Here's an example....
>
> /**
> *
> * Project: MyProject
> *
> *
> *
> *
> *
> *
> *
> * Description:
> *
> * This file contains the some code.
> *
> * Public Functions:
> *
> * function_1
> * function_2
> *
> * Private Functions:
> *
> * None.
> *
> *
> * Notes:
> *
> * None.
> *
> *
> *
> *************************************************************************/
>
>
> .....I would like my code to only have one * space between lines, and
> not all that white space that I see there. I tried to use the regular
> expression: '^\*\n$^\*\n$' but that does not work. I've tried a bunch
> of things and none of them seem to work....please help!!! Thanks in
> advance, Oriana
Are you reading in the file line by line? If so, why not just have a flag
that states you've seen a empty line, and then if the flag is true, do not
output any more empty lines till you see a non-emtpy line?
Pseudo-Code:
fp = openfile($filename)
op = openfine($newfile)
emptyline = 0
while(not fp.eof())
line = fp.readline()
if (isEmpty(line))
if(emptyline) continue
emptyline = 1
else
emptyline = 0
op.writeline(line)
Of course you'll have to decide how you want isEmpty() to decide if a string
is an empty line, but this should be pretty painless.
-regards
brian szmyd
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