Mercurial > hg > pyloader
view pyloader/invoke.py @ 12:d50d5237e82d
rename test file
author | Jeff Hammel <jhammel@mozilla.com> |
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date | Fri, 27 May 2011 07:19:17 -0700 |
parents | a825f00fe062 |
children | efb7a8a189e8 |
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import inspect import sys from cast import cast from cast import str2args def strcall(obj, *args, **kwargs): """call a thing with string arguments""" inspected = obj if inspect.isclass(obj): inspected = obj.__init__ # inspect the ctor try: argspec = inspect.getargspec(inspected) except TypeError: argspec = None if argspec is None: args = [cast(i) for i in args] kwargs = dict([(key, cast(value)) for key, value in kwargs.items()]) else: # TODO: get values from argspec args = [cast(i) for i in args] kwargs = dict([(key, cast(value)) for key, value in kwargs.items()]) return obj(*args, **kwargs) def call(obj, **kwargs): """ call an object with the subset of kwargs appropriate to the object. this assumes that the obj does not take **kwargs """ inspected = obj if inspect.isclass(obj): inspected = obj.__init__ # inspect the ctor args = inspect.getargspec(inspected).args[1:] else: args = inspect.getargspec(obj).args[:] kw = {} # kwargs to invoke obj with for arg in args: if arg in kwargs: kw[arg] = kwargs[arg] return obj(**kw) def main(args=sys.argv[1:]): """CLI entry point""" from loader import load from optparse import OptionParser usage = '%prog Object arg1=value1 arg2=value2 [...]' description = 'invoke an Object given string arguments' parser = OptionParser(usage=usage, description=description) if not args: parser.print_usage() parser.exit() obj = load(args[0]) obj_args, obj_kwargs = str2args(' '.join(args[1:])) print strcall(obj, *obj_args, **obj_kwargs) if __name__ == '__main__': main()