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| 1 | +from optparse import Option, OptionParser, _match_abbrev |
| 2 | + |
| 3 | +# This case-insensitive option parser relies on having a |
| 4 | +# case-insensitive dictionary type available. Here's one |
| 5 | +# for Python 2.2. Note that a *real* case-insensitive |
| 6 | +# dictionary type would also have to implement __new__(), |
| 7 | +# update(), and setdefault() -- but that's not the point |
| 8 | +# of this exercise. |
| 9 | + |
| 10 | +class caseless_dict (dict): |
| 11 | + def __setitem__ (self, key, value): |
| 12 | + dict.__setitem__(self, key.lower(), value) |
| 13 | + |
| 14 | + def __getitem__ (self, key): |
| 15 | + return dict.__getitem__(self, key.lower()) |
| 16 | + |
| 17 | + def get (self, key, default=None): |
| 18 | + return dict.get(self, key.lower()) |
| 19 | + |
| 20 | + def has_key (self, key): |
| 21 | + return dict.has_key(self, key.lower()) |
| 22 | + |
| 23 | + |
| 24 | +class CaselessOptionParser (OptionParser): |
| 25 | + |
| 26 | + def _create_option_list (self): |
| 27 | + self.option_list = [] |
| 28 | + self._short_opt = caseless_dict() |
| 29 | + self._long_opt = caseless_dict() |
| 30 | + self._long_opts = [] |
| 31 | + self.defaults = {} |
| 32 | + |
| 33 | + def _match_long_opt (self, opt): |
| 34 | + return _match_abbrev(opt.lower(), self._long_opt.keys()) |
| 35 | + |
| 36 | + |
| 37 | +if __name__ == "__main__": |
| 38 | + from optik.errors import OptionConflictError |
| 39 | + |
| 40 | + # test 1: no options to start with |
| 41 | + parser = CaselessOptionParser() |
| 42 | + try: |
| 43 | + parser.add_option("-H", dest="blah") |
| 44 | + except OptionConflictError: |
| 45 | + print "ok: got OptionConflictError for -H" |
| 46 | + else: |
| 47 | + print "not ok: no conflict between -h and -H" |
| 48 | + |
| 49 | + parser.add_option("-f", "--file", dest="file") |
| 50 | + #print `parser.get_option("-f")` |
| 51 | + #print `parser.get_option("-F")` |
| 52 | + #print `parser.get_option("--file")` |
| 53 | + #print `parser.get_option("--fIlE")` |
| 54 | + (options, args) = parser.parse_args(["--FiLe", "foo"]) |
| 55 | + assert options.file == "foo", options.file |
| 56 | + print "ok: case insensitive long options work" |
| 57 | + |
| 58 | + (options, args) = parser.parse_args(["-F", "bar"]) |
| 59 | + assert options.file == "bar", options.file |
| 60 | + print "ok: case insensitive short options work" |
| 61 | + |
| 62 | + |
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