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69 lines
1.8 KiB
69 lines
1.8 KiB
from codecs import open as codecs_open
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from urllib.request import urlopen
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from typing import Optional
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from .exceptions import (
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TldIOError,
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TldImproperlyConfigured,
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)
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from .helpers import project_dir
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from .registry import Registry
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__author__ = 'Artur Barseghyan'
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__copyright__ = '2013-2020 Artur Barseghyan'
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__license__ = 'MPL-1.1 OR GPL-2.0-only OR LGPL-2.1-or-later'
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__all__ = ('BaseTLDSourceParser',)
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class BaseTLDSourceParser(metaclass=Registry):
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"""Base TLD source parser."""
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uid: Optional[str] = None
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source_url: str
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local_path: str
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@classmethod
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def validate(cls):
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"""Constructor."""
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if not cls.uid:
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raise TldImproperlyConfigured(
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"The `uid` property of the TLD source parser shall be defined."
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)
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@classmethod
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def get_tld_names(cls, fail_silently: bool = False, retry_count: int = 0):
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"""Get tld names.
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:param fail_silently:
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:param retry_count:
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:return:
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"""
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cls.validate()
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raise NotImplementedError(
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"Your TLD source parser shall implement `get_tld_names` method."
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)
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@classmethod
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def update_tld_names(cls, fail_silently: bool = False) -> bool:
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"""Update the local copy of the TLD file.
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:param fail_silently:
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:return:
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"""
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try:
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remote_file = urlopen(cls.source_url)
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local_file = codecs_open(
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project_dir(cls.local_path),
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'wb',
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encoding='utf8'
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)
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local_file.write(remote_file.read().decode('utf8'))
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local_file.close()
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remote_file.close()
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except Exception as err:
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if fail_silently:
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return False
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raise TldIOError(err)
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return True
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