Hacked to support the notion of "negative alias" options, to handle
-q/--quiet reasonably elegantly.
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@ -21,7 +21,12 @@ from distutils.errors import *
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# the same as a Python NAME -- except, in the spirit of most GNU
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# utilities, we use '-' in place of '_'. (The spirit of LISP lives on!)
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# The similarities to NAME are again not a coincidence...
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longopt_re = re.compile (r'^[a-zA-Z]([a-zA-Z0-9-]*)$')
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longopt_pat = r'[a-zA-Z](?:[a-zA-Z0-9-]*)'
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longopt_re = re.compile (r'^%s$' % longopt_pat)
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# For recognizing "negative alias" options, eg. "quiet=!verbose"
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neg_alias_re = re.compile ("^(%s)=!(%s)$" % (longopt_pat, longopt_pat))
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# This is used to translate long options to legitimate Python identifiers
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# (for use as attributes of some object).
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@ -46,6 +51,7 @@ def fancy_getopt (options, object, args):
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short2long = {}
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attr_name = {}
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takes_arg = {}
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neg_alias = {}
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for option in options:
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try:
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@ -73,7 +79,26 @@ def fancy_getopt (options, object, args):
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long = long[0:-1]
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takes_arg[long] = 1
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else:
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takes_arg[long] = 0
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# Is option is a "negative alias" for some other option (eg.
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# "quiet=!verbose")?
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match = neg_alias_re.match (long)
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if match:
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(alias_from, alias_to) = match.group (1,2)
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if not takes_arg.has_key(alias_to) or takes_arg[alias_to]:
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raise DistutilsGetoptError, \
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("option '%s' is a negative alias for '%s', " +
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"which either hasn't been defined yet " +
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"or takes an argument") % (alias_from, alias_to)
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long = alias_from
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neg_alias[long] = alias_to
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long_opts[-1] = long
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takes_arg[long] = 0
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else:
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takes_arg[long] = 0
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# Now enforce some bondage on the long option name, so we can later
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# translate it to an attribute name in 'object'. Have to do this a
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@ -112,7 +137,11 @@ def fancy_getopt (options, object, args):
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setattr (object, attr, val)
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else:
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if val == '':
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setattr (object, attr, 1)
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alias = neg_alias.get (opt)
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if alias:
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setattr (object, attr_name[alias], 0)
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else:
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setattr (object, attr, 1)
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else:
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raise RuntimeError, "getopt lies! (bad value '%s')" % value
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