1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
#!/usr/bin/env python3
#
# _meta_path.py
"""
Meta path finder and loader to install patched at import time.
"""
#
# Copyright © 2022 Dominic Davis-Foster <dominic@davis-foster.co.uk>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
# OR OTHER DEALINGS IN THE SOFTWARE.
#
# stdlib
import importlib.abc
import importlib.util
import sys
# this package
from sphinx_jinja2_compat._installers import install_jinja2, install_markupsafe
class _Finder(importlib.abc.MetaPathFinder):
def __init__(self):
# Stack stops us going round in circles
self._stack = []
def find_spec(self, fullname, path, target=None):
if fullname in self._stack:
return None
if fullname == "markupsafe":
if self in sys.meta_path:
self._stack.append("markupsafe")
markupsafe = importlib.import_module("markupsafe")
self._stack.pop()
# This is necessary to ensure the patched version gets loaded
del sys.modules["markupsafe"]
class _MarkupsafeLoader(importlib.abc.Loader):
def create_module(self, spec):
install_markupsafe(markupsafe)
return markupsafe
def exec_module(self, module):
pass
return importlib.util.spec_from_loader(
"markupsafe",
_MarkupsafeLoader(),
origin=markupsafe.__file__,
)
elif fullname == "jinja2":
if self in sys.meta_path:
self._stack.append("jinja2")
jinja2 = importlib.import_module("jinja2")
filters = importlib.import_module("jinja2.filters")
utils = importlib.import_module("jinja2.utils")
self._stack.pop()
# This is necessary to ensure the patched version gets loaded
del sys.modules["jinja2"]
class _Jinja2Loader(importlib.abc.Loader):
def create_module(self, spec):
install_jinja2(jinja2, filters, utils)
return jinja2
def exec_module(self, module):
pass
return importlib.util.spec_from_loader("jinja2", _Jinja2Loader(), origin=jinja2.__file__)
|
