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  • Committer: Bastian Bowe
  • Date: 2011-04-07 14:40:56 UTC
  • Revision ID: bastian.bowe@gmail.com-20110407144056-w5bnjhck853merpt
Initial import

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diff2wiki.py
 
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#!/usr/bin/env python
 
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import difflib
 
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import sys
 
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def _equal(old, new):
 
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    return new
 
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def _replace(old, new):
 
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    return "~~%s~~'''%s'''" % (old, new)
 
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def _delete(old, new):
 
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    return "~~%s~~" % old
 
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def _insert(old, new):
 
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    return "'''%s'''" % new
 
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def diff2wiki(old, new):
 
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    """Create a wiki formatting for the diff of two strings.
 
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    >>> old = "I think I want spam."
 
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    >>> new = "I don't want spam!"
 
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    >>> diff2wiki(old, new)
 
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    "I '''don''''t~~hink I~~ want spam~~.~~'''!'''"
 
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    """
 
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    s = difflib.SequenceMatcher(None, old, new)
 
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    result = [globals()["_%s" % tag](old[i1:i2], new[j1:j2])
 
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              for tag, i1, i2, j1, j2 in s.get_opcodes()]
 
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    return "".join(result)
 
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if __name__ == "__main__":
 
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    if len(sys.argv) != 3:
 
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        print 'diff2wiki "Old text" "New text"'
 
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        sys.exit(1)
 
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    print diff2wiki(*sys.argv[1:])