Count and replacing strings a texfile

[Carel Fellinger]

puckoh at my-deja.com wrote:
> Hello.

> This is a probably basic question.
> I have a textfile about 120k large, and there is several strings in it
> which I must replace.
> The strings are named "%id%" and the number of strings are unknown.

Do I understand you correctly, are all to be replaced strings equal?

> First, I need to count them all.

no need to count them then

> Then I must replace every one of them with a incrementing number.
> Like the first %id% is replaced with 1, the second with 2 etc.

Well that just seems to easy, lets complicate it.

$ cat request.py
#!/usr/bin/python
##untested code made while I should be sleeping

import re

class Subs:

    def __init__(self):
        self.id = {}

    def __call__(self, matched):
        s = matched.group()[1:-1]
        self.id[s] = self.id.get(s, 0) + 1
        return "(%s=%d)" % (s, self.id[s])

r = re.compile('%.*?%')

data = open("spam").read()

data = r.sub(Subs(), data)

open("numbered-spam", "w").write(data)


$ cat spam
%spam%, %spam%, %spam% and %eggs%
%spam%, %spam%, %spam%, %bacon% and %eggs%

$ cat numbered-spam
(spam=1), (spam=2), (spam=3) and (eggs=1)
(spam=4), (spam=5), (spam=6), (bacon=1) and (eggs=2)
-- 
groetjes, carel