mirror of
https://github.com/janeczku/calibre-web
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d26e60724a
Refactoring of server code Updates requirements Improved requirements parsing for versions containing letters
110 lines
4.0 KiB
Python
110 lines
4.0 KiB
Python
import os
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import re
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import sys
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import json
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from .constants import BASE_DIR
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try:
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from importlib.metadata import version
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importlib = True
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ImportNotFound = BaseException
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except ImportError:
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importlib = False
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version = None
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if not importlib:
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try:
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import pkg_resources
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from pkg_resources import DistributionNotFound as ImportNotFound
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pkgresources = True
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except ImportError as e:
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pkgresources = False
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def load_dependencies(optional=False):
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deps = list()
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if getattr(sys, 'frozen', False):
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pip_installed = os.path.join(BASE_DIR, ".pip_installed")
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if os.path.exists(pip_installed):
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with open(pip_installed) as f:
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exe_deps = json.loads("".join(f.readlines()))
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else:
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return deps
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if importlib or pkgresources:
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if optional:
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req_path = os.path.join(BASE_DIR, "optional-requirements.txt")
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else:
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req_path = os.path.join(BASE_DIR, "requirements.txt")
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if os.path.exists(req_path):
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with open(req_path, 'r') as f:
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for line in f:
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if not line.startswith('#') and not line == '\n' and not line.startswith('git'):
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res = re.match(r'(.*?)([<=>\s]+)([\d\.]+),?\s?([<=>\s]+)?([\d\.]+)?', line.strip())
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try:
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if getattr(sys, 'frozen', False):
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dep_version = exe_deps[res.group(1).lower().replace('_', '-')]
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else:
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if importlib:
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dep_version = version(res.group(1))
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else:
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dep_version = pkg_resources.get_distribution(res.group(1)).version
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except (ImportNotFound, KeyError):
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if optional:
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continue
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dep_version = "not installed"
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deps.append([dep_version, res.group(1), res.group(2), res.group(3), res.group(4), res.group(5)])
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return deps
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def dependency_check(optional=False):
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d = list()
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deps = load_dependencies(optional)
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for dep in deps:
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try:
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dep_version_int = [int(x) if x.isnumeric() else 0 for x in dep[0].split('.')]
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low_check = [int(x) for x in dep[3].split('.')]
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high_check = [int(x) for x in dep[5].split('.')]
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except AttributeError:
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high_check = []
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except ValueError:
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d.append({'name': dep[1],
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'target': "available",
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'found': "Not available"
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})
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continue
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if dep[2].strip() == "==":
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if dep_version_int != low_check:
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d.append({'name': dep[1],
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'found': dep[0],
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"target": dep[2] + dep[3]})
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continue
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elif dep[2].strip() == ">=":
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if dep_version_int < low_check:
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d.append({'name': dep[1],
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'found': dep[0],
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"target": dep[2] + dep[3]})
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continue
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elif dep[2].strip() == ">":
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if dep_version_int <= low_check:
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d.append({'name': dep[1],
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'found': dep[0],
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"target": dep[2] + dep[3]})
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continue
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if dep[4] and dep[5]:
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if dep[4].strip() == "<":
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if dep_version_int >= high_check:
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d.append(
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{'name': dep[1],
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'found': dep[0],
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"target": dep[4] + dep[5]})
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continue
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elif dep[4].strip() == "<=":
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if dep_version_int > high_check:
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d.append(
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{'name': dep[1],
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'found': dep[0],
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"target": dep[4] + dep[5]})
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continue
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return d
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