calibre-web/cps/dep_check.py

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import os
import re
from .constants import BASE_DIR
try:
from importlib_metadata import version
importlib = True
ImportNotFound = BaseException
except ImportError:
importlib = False
if not importlib:
try:
import pkg_resources
from pkg_resources import DistributionNotFound as ImportNotFound
pkgresources = True
except ImportError as e:
pkgresources = False
def dependency_check(optional=False):
dep = list()
if importlib or pkgresources:
if optional:
req_path = os.path.join(BASE_DIR, "optional-requirements.txt")
else:
req_path = os.path.join(BASE_DIR, "requirements.txt")
if os.path.exists(req_path):
try:
with open(req_path, 'r') as f:
for line in f:
if not line.startswith('#') and not line == '\n' and not line.startswith('git'):
res = re.match(r'(.*?)([<=>\s]+)([\d\.]+),?\s?([<=>\s]+)?([\d\.]+)?', line.strip())
try:
if importlib:
dep_version = version(res.group(1))
else:
dep_version = pkg_resources.get_distribution(res.group(1)).version
except ImportNotFound:
if optional:
continue
else:
return [{'name':res.group(1),
'target': "available",
'found': "Not available"
}]
if res.group(2).strip() == "==":
if dep_version.split('.') != res.group(3).split('.'):
dep.append({'name': res.group(1),
'found': dep_version,
"target": res.group(2) + res.group(3)})
continue
elif res.group(2).strip() == ">=":
if dep_version.split('.') < res.group(3).split('.'):
dep.append({'name': res.group(1),
'found': dep_version,
"target": res.group(2) + res.group(3)})
continue
elif res.group(2).strip() == ">":
if dep_version.split('.') <= res.group(3).split('.'):
dep.append({'name': res.group(1),
'found': dep_version,
"target": res.group(2) + res.group(3)})
continue
if res.group(4) and res.group(5):
if res.group(4).strip() == "<":
if dep_version.split('.') >= res.group(5).split('.'):
dep.append(
{'name': res.group(1),
'found': dep_version,
"target": res.group(4) + res.group(5)})
continue
elif res.group(2).strip() == "<=":
if dep_version.split('.') > res.group(5).split('.'):
dep.append(
{'name': res.group(1),
'found': dep_version,
"target": res.group(4) + res.group(5)})
continue
except Exception as e:
print(e)
return dep