Peter Otten wrote:
> Changing numbers to make room for a new footnote is not much harder (but
> less convenient as you have to repeat it for every new footnote):
>
>>>> def replace(match, n=2):
> ... index = int(match.group(1))
> ... if index >= n:
> ... index += 1
> ... return "[{}]".format(index)
> ...
>>>> print(re.compile(r"\[(\d+)\]").sub(replace, text))
> blah blah blah [1]_ and blah blah blah [3]_.
> blah blah [4]_ blah ... blah blah
> blah blah [1000]_.
>
> .. [1] fe
> .. [3] fi
> .. [4] fo
> ...
> .. [1000] fum
Those who remember the old basic dialects might [1]_ like
$ cat insert_footnote_basic.py
#!/usr/bin/env python3
import re
import sys
def step(start, delta):
n = start
while True:
yield n
n += delta
def insert_footnote(text):
lookup = {}
steps = step(10, 10)
def replace(match):
index = int(match.group(1))
try:
new_index = lookup[index]
except KeyError:
new_index = lookup[index] = next(steps)
return "[{}]".format(new_index)
return re.compile(r"\[(\d+)\]").sub(replace, text)
if __name__ == "__main__":
sys.stdout.write(
insert_footnote(sys.stdin.read())
)
$ cat sample.rst
blah blah blah [10]_ and blah blah blah [20]_.
[21] this is new
blah blah [30]_ blah ... blah blah
blah blah [9990]_.
.. [10] fe
.. [20] fi
.. [21] yes it is
.. [30] fo
...
.. [9990] fum
$ ./insert_footnote_basic.py < sample.rst
blah blah blah [10]_ and blah blah blah [20]_.
[30] this is new
blah blah [40]_ blah ... blah blah
blah blah [50]_.
.. [10] fe
.. [20] fi
.. [30] yes it is
.. [40] fo
...
.. [50] fum
$
.. [1] or run away screaming ;)
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