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# MIT licensed
# Copyright (c) 2020 Ypsilik <tt2laurent.maud@gmail.com>, et al.
# Copyright (c) 2013-2020 lilydjwg <lilydjwg@gmail.com>, et al.
from lxml import html, etree
from nvchecker.api import session, GetVersionError
async def get_version(name, conf, *, cache, **kwargs):
key = tuple(sorted(conf.items()))
return await cache.get(key, get_version_impl)
async def get_version_impl(info):
conf = dict(info)
encoding = conf.get('encoding')
is_xml = conf.get('is_xml')
if is_xml:
parser = etree.XMLParser(encoding=encoding)
else:
parser = html.HTMLParser(encoding=encoding)
data = conf.get('post_data')
if data is None:
res = await session.get(conf['url'])
else:
res = await session.post(conf['url'], body = data, headers = {
'Content-Type': conf.get('post_data_type', 'application/x-www-form-urlencoded')
})
if is_xml:
doc = etree.fromstring(res.body, base_url=conf['url'], parser=parser)
else:
doc = html.fromstring(res.body, base_url=conf['url'], parser=parser)
try:
els = doc.xpath(conf.get('xpath'))
except ValueError:
if not conf.get('missing_ok', False):
raise GetVersionError('version string not found.')
except etree.XPathEvalError as e:
raise GetVersionError('bad xpath', exc_info=e)
if is_xml:
version = [
str(el)
if isinstance(el, str)
else ''.join(el.itertext())
for el in els
]
else:
version = [
str(el)
if isinstance(el, str)
else str(el.text_content())
for el in els
]
return version
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