30 lines
818 B
Python
30 lines
818 B
Python
# MIT licensed
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# Copyright (c) 2022 Pekka Ristola <pekkarr [at] protonmail [dot] com>, et al.
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from nvchecker.api import session, RichResult, GetVersionError
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CRAN_URL = 'https://cran.r-project.org/package=%s/DESCRIPTION'
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VERSION_FIELD = 'Version: '
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async def request(pkg):
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url = CRAN_URL % pkg
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res = await session.get(url)
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return res.body.decode('utf-8', errors='ignore')
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async def get_version(name, conf, *, cache, **kwargs):
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package = conf.get('cran', name)
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desc = await cache.get(package, request)
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for line in desc.splitlines():
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if line.startswith(VERSION_FIELD):
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version = line[len(VERSION_FIELD):]
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break
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else:
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raise GetVersionError('Invalid DESCRIPTION file')
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return RichResult(
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version = version,
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url = f'https://cran.r-project.org/web/packages/{package}/',
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)
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