mirror of
https://github.com/nexus-stc/hyperboria
synced 2024-12-21 09:07:46 +01:00
35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
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import re
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from typing import AsyncIterable
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from library.logging import error_log
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from nexus.pylon.exceptions import RegexNotFoundError
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from .base import (
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DoiSource,
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PreparedRequest,
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)
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class LibgenDoiSource(DoiSource):
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base_url = 'http://libgen.gs'
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resolve_timeout = 10
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async def resolve(self) -> AsyncIterable[PreparedRequest]:
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async with self.get_resolve_session() as session:
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url = f'{self.base_url}/scimag/ads.php?doi={self.doi}'
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async with session.get(
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url,
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timeout=self.resolve_timeout
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) as resp:
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downloaded_page_bytes = await resp.read()
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downloaded_page = downloaded_page_bytes.decode('utf-8', 'backslashreplace')
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match = re.search(
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'https?://.*/scimag/get\\.php\\?doi=.*&key=[A-Za-z0-9]+',
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downloaded_page,
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re.IGNORECASE,
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)
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if match:
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yield PreparedRequest(method='get', url=match.group())
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else:
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error_log(RegexNotFoundError(url=url))
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