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
|
# -*- coding: utf-8 -*-
"""
sphinx.util.pycompat
~~~~~~~~~~~~~~~~~~~~
Stuff for Python version compatibility.
:copyright: Copyright 2007-2014 by the Sphinx team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import sys
import codecs
import six
# ------------------------------------------------------------------------------
# Python 2/3 compatibility
if six.PY3:
# Python 3
# the ubiquitous "bytes" helper functions
def b(s):
return s.encode('utf-8')
# prefix for Unicode strings
u = ''
from io import TextIOWrapper
# safely encode a string for printing to the terminal
def terminal_safe(s):
return s.encode('ascii', 'backslashreplace').decode('ascii')
# some kind of default system encoding; should be used with a lenient
# error handler
sys_encoding = sys.getdefaultencoding()
# support for running 2to3 over config files
def convert_with_2to3(filepath):
from lib2to3.refactor import RefactoringTool, get_fixers_from_package
from lib2to3.pgen2.parse import ParseError
fixers = get_fixers_from_package('lib2to3.fixes')
refactoring_tool = RefactoringTool(fixers)
source = refactoring_tool._read_python_source(filepath)[0]
try:
tree = refactoring_tool.refactor_string(source, 'conf.py')
except ParseError as err:
# do not propagate lib2to3 exceptions
lineno, offset = err.context[1]
# try to match ParseError details with SyntaxError details
raise SyntaxError(err.msg, (filepath, lineno, offset, err.value))
return six.text_type(tree)
from html import escape as htmlescape # >= Python 3.2
else:
# Python 2
b = str
u = 'u'
# no need to refactor on 2.x versions
convert_with_2to3 = None
def TextIOWrapper(stream, encoding):
return codecs.lookup(encoding or 'ascii')[2](stream)
# safely encode a string for printing to the terminal
def terminal_safe(s):
return s.encode('ascii', 'backslashreplace')
# some kind of default system encoding; should be used with a lenient
# error handler
sys_encoding = __import__('locale').getpreferredencoding()
# use Python 3 name
from cgi import escape as htmlescape # 2.6, 2.7
def execfile_(filepath, _globals):
from sphinx.util.osutil import fs_encoding
# get config source -- 'b' is a no-op under 2.x, while 'U' is
# ignored under 3.x (but 3.x compile() accepts \r\n newlines)
f = open(filepath, 'rbU')
try:
source = f.read()
finally:
f.close()
# py26 accept only LF eol instead of CRLF
if sys.version_info[:2] == (2, 6):
source = source.replace(b('\r\n'), b('\n'))
# compile to a code object, handle syntax errors
filepath_enc = filepath.encode(fs_encoding)
try:
code = compile(source, filepath_enc, 'exec')
except SyntaxError:
if convert_with_2to3:
# maybe the file uses 2.x syntax; try to refactor to
# 3.x syntax using 2to3
source = convert_with_2to3(filepath)
code = compile(source, filepath_enc, 'exec')
else:
raise
six.exec_(code, _globals)
|
