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import mimetypes
import importlib
import pkgutil
from . import abstract
from typing import Type, TypeVar
T = TypeVar('T', bound='abstract.AbstractParser')
# This loads every parser in a dynamic way
for module_loader, name, ispkg in pkgutil.walk_packages('.src'):
if not name.startswith('src.'):
continue
elif name == 'src.abstract':
continue
importlib.import_module(name)
def get_parser(filename: str) -> (T, str):
mtype, _ = mimetypes.guess_type(filename)
def get_subclasses(cls):
return cls.__subclasses__() + \
[g for s in cls.__subclasses__() for g in get_subclasses(s)]
for c in get_subclasses(abstract.AbstractParser):
if mtype in c.mimetypes:
return c(filename), mtype
return None, mtype
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