def _check_type(self): if self.type is None: if self.action in self.ALWAYS_TYPED_ACTIONS: if self.choices is not None: # The "choices" attribute implies "choice" type. self.type = "choice" else: # No type given? "string" is the most sensible default. self.type = "string" else: # Allow type objects or builtin type conversion functions # (int, str, etc.) as an alternative to their names. (The # complicated check of __builtin__ is only necessary for # Python 2.1 and earlier, and is short-circuited by the # first check on modern Pythons.) import __builtin__ if (type(self.type) is types.TypeType or (hasattr(self.type, "__name__") and getattr(__builtin__, self.type.__name__, None) is self.type)): self.type = self.type.__name__ if self.type == "str": self.type = "string" if self.type not in self.TYPES: raise OptionError("invalid option type: %r" % self.type, self) if self.action not in self.TYPED_ACTIONS: raise OptionError( "must not supply a type for action %r" % self.action, self)
def _check_choice(self): if self.type == "choice": if self.choices is None: raise OptionError( "must supply a list of choices for type 'choice'", self) elif type(self.choices) not in (types.TupleType, types.ListType): raise OptionError( "choices must be a list of strings ('%s' supplied)" % str(type(self.choices)).split("'")[1], self) elif self.choices is not None: raise OptionError( "must not supply choices for type %r" % self.type, self)
def _check_nargs(self): if self.action in self.TYPED_ACTIONS: if self.nargs is None: self.nargs = 1 elif self.nargs is not None: raise OptionError( "'nargs' must not be supplied for action %r" % self.action, self)
def _check_type(self): if self.type is None: # XXX should factor out another class attr here: list of # actions that *require* a type if self.action in ("store", "append"): if self.choices is not None: # The "choices" attribute implies "choice" type. self.type = "choice" else: # No type given? "string" is the most sensible default. self.type = "string" else: if self.type not in self.TYPES: raise OptionError("invalid option type: %r" % self.type, self) if self.action not in self.TYPED_ACTIONS: raise OptionError( "must not supply a type for action %r" % self.action, self)
def _set_opt_strings(self, opts): for opt in opts: if len(opt) < 2: raise OptionError( "invalid option string %r: " "must be at least two characters long" % opt, self) elif len(opt) == 2: if not (opt[0] == "-" and opt[1] != "-"): raise OptionError( "invalid short option string %r: " "must be of the form -x, (x any non-dash char)" % opt, self) self._short_opts.append(opt) else: if not (opt[0:2] == "--" and opt[2] != "-"): raise OptionError( "invalid long option string %r: " "must start with --, followed by non-dash" % opt, self) self._long_opts.append(opt)
def _check_type(self): if self.type is None: if self.action in self.ALWAYS_TYPED_ACTIONS: if self.choices is not None: # The "choices" attribute implies "choice" type. self.type = "choice" else: # No type given? "string" is the most sensible default. self.type = "string" else: # Allow type objects as an alternative to their names. if hasattr(self.type, "__name__"): self.type = self.type.__name__ if self.type == "str": self.type = "string" if self.type not in self.TYPES: raise OptionError("invalid option type: %s" % repr(self.type), self) if self.action not in self.TYPED_ACTIONS: raise OptionError( "must not supply a type for action %s" % repr(self.action), self)
def _check_callback(self): if self.action == "callback": if not callable(self.callback): raise OptionError("callback not callable: %r" % self.callback, self) if (self.callback_args is not None and type(self.callback_args) is not types.TupleType): raise OptionError( "callback_args, if supplied, must be a tuple: not %r" % self.callback_args, self) if (self.callback_kwargs is not None and type(self.callback_kwargs) is not types.DictType): raise OptionError( "callback_kwargs, if supplied, must be a dict: not %r" % self.callback_kwargs, self) else: if self.callback is not None: raise OptionError( "callback supplied (%r) for non-callback option" % self.callback, self) if self.callback_args is not None: raise OptionError( "callback_args supplied for non-callback option", self) if self.callback_kwargs is not None: raise OptionError( "callback_kwargs supplied for non-callback option", self)
def _set_attrs(self, attrs): for attr in self.ATTRS: if attrs.has_key(attr): setattr(self, attr, attrs[attr]) del attrs[attr] else: if attr == 'default': setattr(self, attr, NO_DEFAULT) else: setattr(self, attr, None) if attrs: raise OptionError( "invalid keyword arguments: %s" % ", ".join(attrs.keys()), self)
def _check_dest(self): # No destination given, and we need one for this action. The # self.type check is for callbacks that take a value. takes_value = (self.action in self.STORE_ACTIONS or self.type is not None) if self.dest is None and takes_value: # Glean a destination from the first long option string, # or from the first short option string if no long options. if self._long_opts: # eg. "--foo-bar" -> "foo_bar" self.dest = self._long_opts[0][2:].replace('-', '_') if (self._long_opts_had_minus): raise OptionError( "If dest is not specified explicitly, long options" " must be given with underscores instead of" " minus signs.", self) else: self.dest = self._short_opts[0][1]
def _check_const(self): if self.action != "store_const" and self.const is not None: raise OptionError( "'const' must not be supplied for action %r" % self.action, self)
def _check_action(self): if self.action is None: self.action = "store" elif self.action not in self.ACTIONS: raise OptionError("invalid action: %r" % self.action, self)
def _check_const(self): if self.action not in self.CONST_ACTIONS and self.const is not None: raise OptionError( "'const' must not be supplied for action %s" % repr(self.action), self)