o @sdZddlZddlZddlZddlZddlmZddgZgdZe e Z dZ dZ d Zee e egZe Zd d Zd d ZddZddZdS)zCommon utility library.N)urllibzrafek@google.com (Rafe Kaplan)z#guido@google.com (Guido van Rossum)) positionalPOSITIONAL_WARNINGPOSITIONAL_EXCEPTIONPOSITIONAL_IGNOREWARNING EXCEPTIONIGNOREcsFfdd}ttjr|St\}}}}tt|t|S)aA decorator to declare that only the first N arguments my be positional. This decorator makes it easy to support Python 3 style keyword-only parameters. For example, in Python 3 it is possible to write:: def fn(pos1, *, kwonly1=None, kwonly1=None): ... All named parameters after ``*`` must be a keyword:: fn(10, 'kw1', 'kw2') # Raises exception. fn(10, kwonly1='kw1') # Ok. Example ^^^^^^^ To define a function like above, do:: @positional(1) def fn(pos1, kwonly1=None, kwonly2=None): ... If no default value is provided to a keyword argument, it becomes a required keyword argument:: @positional(0) def fn(required_kw): ... This must be called with the keyword parameter:: fn() # Raises exception. fn(10) # Raises exception. fn(required_kw=10) # Ok. When defining instance or class methods always remember to account for ``self`` and ``cls``:: class MyClass(object): @positional(2) def my_method(self, pos1, kwonly1=None): ... @classmethod @positional(2) def my_method(cls, pos1, kwonly1=None): ... The positional decorator behavior is controlled by ``util.positional_parameters_enforcement``, which may be set to ``POSITIONAL_EXCEPTION``, ``POSITIONAL_WARNING`` or ``POSITIONAL_IGNORE`` to raise an exception, log a warning, or do nothing, respectively, if a declaration is violated. Args: max_positional_arguments: Maximum number of positional arguments. All parameters after the this index must be keyword only. Returns: A decorator that prevents using arguments after max_positional_args from being used as positional parameters. Raises: TypeError: if a key-word only argument is provided as a positional parameter, but only if util.positional_parameters_enforcement is set to POSITIONAL_EXCEPTION. cstfdd}|S)Ncsdt|kr+d}dkrd}djjt||d}ttkr"t|ttkr+t||i|S)NszV{function}() takes at most {args_max} positional argument{plural} ({args_given} given))functionargs_max args_givenplural) lenformat__name__!positional_parameters_enforcementr TypeErrorrloggerwarning)argskwargsplural_smessage)max_positional_argswrapped:/tmp/google-cloud-sdk/lib/third_party/oauth2client/util.pypositional_wrapperys  zDpositional..positional_decorator..positional_wrapper) functoolswraps)rr r)rrpositional_decoratorxsz(positional..positional_decorator) isinstancesix integer_typesinspect getargspecrr)rr$r_defaultsrr#rr0s H rcCst|tjr|Sd|S)a_Converts scope value to a string. If scopes is a string then it is simply passed through. If scopes is an iterable then a string is returned that is all the individual scopes concatenated with spaces. Args: scopes: string or iterable of strings, the scopes. Returns: The scopes formatted as a single string.  )r%r& string_typesjoinscopesrrrscopes_to_strings  r1cCs"|sgSt|tjr|dS|S)a+Converts stringifed scope value to a list. If scopes is a list then it is simply passed through. If scopes is an string then a list of each individual scope is returned. Args: scopes: a string or iterable of strings, the scopes. Returns: The scopes in a list. r,)r%r&r-splitr/rrrstring_to_scopess    r3cCsT|dur|Sttj|}ttj|d}|||<tj||d<tj|S)a\Adds a query parameter to a url. Replaces the current value if it already exists in the URL. Args: url: string, url to add the query parameter to. name: string, query parameter name. value: string, query parameter value. Returns: Updated query parameter. Does not update the url if value is None. N)listrparseurlparsedict parse_qsl urlencode urlunparse)urlnamevalueparsedqrrr_add_query_parameters  rA)__doc__r!r(loggingr& six.movesr __author____all__ getLoggerrrrrr frozensetPOSITIONAL_SETrrr1r3rArrrrs,  c