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
97
98
99
100
101
102
103
|
# coding: ascii
"""Python 2.x/3.x compatibility tools"""
import sys
__all__ = ['geterror', 'long_', 'xrange_', 'ord_', 'unichr_',
'unicode_', 'raw_input_', 'as_bytes', 'as_unicode',
'bytes_', 'imap_', 'PY_MAJOR_VERSION']
PY_MAJOR_VERSION = sys.version_info[0]
def geterror():
return sys.exc_info()[1]
# Python 3
if PY_MAJOR_VERSION >= 3:
long_ = int
xrange_ = range
from io import StringIO
from io import BytesIO
unichr_ = chr
unicode_ = str
bytes_ = bytes
raw_input_ = input
imap_ = map
# Represent escaped bytes and strings in a portable way.
#
# as_bytes: Allow a Python 3.x string to represent a bytes object.
# e.g.: as_bytes("a\x01\b") == b"a\x01b" # Python 3.x
# as_bytes("a\x01\b") == "a\x01b" # Python 2.x
# as_unicode: Allow a Python "r" string to represent a unicode string.
# e.g.: as_unicode(r"Bo\u00F6tes") == u"Bo\u00F6tes" # Python 2.x
# as_unicode(r"Bo\u00F6tes") == "Bo\u00F6tes" # Python 3.x
def as_bytes(string):
""" '<binary literal>' => b'<binary literal>' """
return string.encode('latin-1', 'strict')
def as_unicode(rstring):
""" r'<Unicode literal>' => '<Unicode literal>' """
return rstring.encode('ascii', 'strict').decode('unicode_escape',
'strict')
# Python 2
else:
long_ = long
xrange_ = xrange
from cStringIO import StringIO
BytesIO = StringIO
unichr_ = unichr
unicode_ = unicode
bytes_ = str
raw_input_ = raw_input
from itertools import imap as imap_
# Represent escaped bytes and strings in a portable way.
#
# as_bytes: Allow a Python 3.x string to represent a bytes object.
# e.g.: as_bytes("a\x01\b") == b"a\x01b" # Python 3.x
# as_bytes("a\x01\b") == "a\x01b" # Python 2.x
# as_unicode: Allow a Python "r" string to represent a unicode string.
# e.g.: as_unicode(r"Bo\u00F6tes") == u"Bo\u00F6tes" # Python 2.x
# as_unicode(r"Bo\u00F6tes") == "Bo\u00F6tes" # Python 3.x
def as_bytes(string):
""" '<binary literal>' => '<binary literal>' """
return string
def as_unicode(rstring):
""" r'<Unicode literal>' => u'<Unicode literal>' """
return rstring.decode('unicode_escape', 'strict')
def get_BytesIO():
return BytesIO
def get_StringIO():
return StringIO
def ord_(o):
try:
return ord(o)
except TypeError:
return o
if sys.platform == 'win32':
filesystem_errors = "replace"
elif PY_MAJOR_VERSION >= 3:
filesystem_errors = "surrogateescape"
else:
filesystem_errors = "strict"
def filesystem_encode(u):
fsencoding = sys.getfilesystemencoding()
if fsencoding.lower() in ['ascii', 'ansi_x3.4-1968'] and sys.platform.startswith('linux'):
# Don't believe Linux systems claiming ASCII-only filesystems. In
# practice, arbitrary bytes are allowed, and most things expect UTF-8.
fsencoding = 'utf-8'
return u.encode(fsencoding, filesystem_errors)
|
