##// END OF EJS Templates
Fix for incorrect default encoding on Windows.
dhirschfeld -
Show More
@@ -1,56 +1,67 b''
1 1 # coding: utf-8
2 2 """
3 3 Utilities for dealing with text encodings
4 4 """
5 5
6 6 #-----------------------------------------------------------------------------
7 7 # Copyright (C) 2008-2012 The IPython Development Team
8 8 #
9 9 # Distributed under the terms of the BSD License. The full license is in
10 10 # the file COPYING, distributed as part of this software.
11 11 #-----------------------------------------------------------------------------
12 12
13 13 #-----------------------------------------------------------------------------
14 14 # Imports
15 15 #-----------------------------------------------------------------------------
16 16 import sys
17 17 import locale
18 import warnings
18 19
19 20 # to deal with the possibility of sys.std* not being a stream at all
20 21 def get_stream_enc(stream, default=None):
21 22 """Return the given stream's encoding or a default.
22 23
23 24 There are cases where ``sys.std*`` might not actually be a stream, so
24 25 check for the encoding attribute prior to returning it, and return
25 26 a default if it doesn't exist or evaluates as False. ``default``
26 27 is None if not provided.
27 28 """
28 29 if not hasattr(stream, 'encoding') or not stream.encoding:
29 30 return default
30 31 else:
31 32 return stream.encoding
32 33
33 34 # Less conservative replacement for sys.getdefaultencoding, that will try
34 35 # to match the environment.
35 36 # Defined here as central function, so if we find better choices, we
36 37 # won't need to make changes all over IPython.
37 38 def getdefaultencoding():
38 39 """Return IPython's guess for the default encoding for bytes as text.
39 40
40 41 Asks for stdin.encoding first, to match the calling Terminal, but that
41 42 is often None for subprocesses. Fall back on locale.getpreferredencoding()
42 43 which should be a sensible platform default (that respects LANG environment),
43 44 and finally to sys.getdefaultencoding() which is the most conservative option,
44 45 and usually ASCII.
45 46 """
46 47 enc = get_stream_enc(sys.stdin)
47 48 if not enc or enc=='ascii':
48 49 try:
49 50 # There are reports of getpreferredencoding raising errors
50 51 # in some cases, which may well be fixed, but let's be conservative here.
51 52 enc = locale.getpreferredencoding()
52 53 except Exception:
53 54 pass
54 return enc or sys.getdefaultencoding()
55 enc = enc or sys.getdefaultencoding()
56 # On windows `cp0` can be returned to indicate that there is no code page.
57 # Since cp0 is an invalid encoding return instead cp1252 which is the
58 # Western European default.
59 if enc == 'cp0':
60 warnings.warn(
61 "Invalid code page cp0 detected - using cp1252 instead."
62 "If cp1252 is incorrect please ensure a valid code page "
63 "is defined for the process.", RuntimeWarning)
64 return 'cp1252'
65 return enc
55 66
56 67 DEFAULT_ENCODING = getdefaultencoding()
General Comments 0
You need to be logged in to leave comments. Login now