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#!/usr/bin/env python
# coding: utf-8
"""
python-creole utils
~~~~~~~~~~~~~~~~~~~
:copyleft: 2008-2011 by python-creole team, see AUTHORS for more details.
:license: GNU GPL v3 or above, see LICENSE for more details.
"""
import re
space_re = re.compile(r"^(\s*)(.*?)(\s*)$", re.DOTALL)
def clean_whitespace(txt):
"""
Special whitespaces cleanup
>>> clean_whitespace("\\n\\nfoo bar\\n\\n")
'foo bar\\n'
>>> clean_whitespace(" foo bar \\n \\n")
' foo bar\\n'
>>> clean_whitespace(" \\n \\n foo bar ")
' foo bar '
>>> clean_whitespace("foo bar")
'foo bar'
"""
def cleanup(match):
start, txt, end = match.groups()
if " " in start:
start = " "
else:
start = ""
if "\n" in end:
end = "\n"
elif " " in end:
end = " "
return start + txt + end
return space_re.sub(cleanup, txt)
if __name__ == '__main__':
import doctest
print(doctest.testmod())
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