def find_by_type(ptype, prs, cls=anyconfig.models.processor.Processor):
"""
:param ptype:
Type of the data to process or
:class:`anyconfig.models.processor.Processor` class object or its
instance
:param prs: A list of :class:`anyconfig.models.processor.Processor` classes
:param cls: A class object to compare with `ptype`
:return:
Most appropriate processor instance to process files of given data type
`ptype` or None
:raises: UnknownProcessorTypeError
"""
if isinstance(ptype, cls):
return ptype
if type(ptype) == type(cls) and issubclass(ptype, cls):
return ptype()
def pred(pcls):
"""Predicate"""
return pcls.type() == ptype
processor = find_with_pred(pred, prs)
if processor is None:
raise UnknownProcessorTypeError(ptype)
return processor()
def find_by_type_or_id(type_or_id,
prs,
cls=anyconfig.models.processor.Processor):
"""
:param type_or_id:
Type of the data to process or ID of the processor class or
:class:`anyconfig.models.processor.Processor` class object or its
instance
:param prs: A list of :class:`anyconfig.models.processor.Processor` classes
:param cls: A class object to compare with `type_or_id`
:return:
Most appropriate processor instance to process files of given data type
or processor `type_or_id` found by its ID or None
:raises: UnknownProcessorTypeError
"""
if isinstance(type_or_id, cls):
return type_or_id
if type(type_or_id) == type(cls) and issubclass(type_or_id, cls):
return type_or_id()
def pred(pcls):
"""Predicate"""
return pcls.cid() == type_or_id or pcls.type() == type_or_id
processor = find_with_pred(pred, prs)
if processor is None:
raise UnknownProcessorTypeError(type_or_id)
return processor()
def find_by_maybe_file(obj, prs):
"""
:param obj:
a file path, file or file-like object, pathlib.Path object or
`~anyconfig.globals.IOInfo` (namedtuple) object
:param cps_by_ext: A list of processor classes
:return:
An instance of most appropriate processor class to process given data
:raises: UnknownFileTypeError
"""
if not isinstance(obj, IOInfo):
obj = anyconfig.ioinfo.make(obj)
processor = find_by_fileext(obj.extension, prs)
if processor is None:
raise UnknownFileTypeError("file extension={}".format(obj.extension))
return processor()