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"""Encoding utilities"""
import os
import sys
try:
import builtins
except ImportError:
import __builtin__ as builtins
__all__ = ['b', 'bchr', 'bytestype', 'envencode', 'fsdecode', 'fsencode',
'stdoutb', 'stderrb', 'u', 'ul', 'unicodetype']
bytestype = getattr(builtins, 'bytes', str)
unicodetype = getattr(builtins, 'unicode', str)
if getattr(os, 'fsdecode', None) is not None:
fsdecode = os.fsdecode
fsencode = os.fsencode
elif bytestype is not str:
if sys.platform == 'win32':
def fsdecode(s):
"""Decode a filename from the filesystem encoding"""
if isinstance(s, unicodetype):
return s
encoding = sys.getfilesystemencoding()
if encoding == 'mbcs':
return s.decode(encoding)
else:
return s.decode(encoding, 'surrogateescape')
def fsencode(s):
"""Encode a filename to the filesystem encoding"""
if isinstance(s, bytestype):
return s
encoding = sys.getfilesystemencoding()
if encoding == 'mbcs':
return s.encode(encoding)
else:
return s.encode(encoding, 'surrogateescape')
else:
def fsdecode(s):
"""Decode a filename from the filesystem encoding"""
if isinstance(s, unicodetype):
return s
return s.decode(sys.getfilesystemencoding(), 'surrogateescape')
def fsencode(s):
"""Encode a filename to the filesystem encoding"""
if isinstance(s, bytestype):
return s
return s.encode(sys.getfilesystemencoding(), 'surrogateescape')
else:
def fsdecode(s):
"""Decode a filename from the filesystem encoding"""
return s
def fsencode(s):
"""Encode a filename to the filesystem encoding"""
return s
if bytestype is str:
def envencode(s):
"""Encode a byte string to the os.environ encoding"""
return s
else:
envencode = fsdecode
if getattr(sys.stdout, 'buffer', None) is not None:
stdoutb = sys.stdout.buffer
stderrb = sys.stderr.buffer
else:
stdoutb = sys.stdout
stderrb = sys.stderr
if bytestype is str:
def b(s):
"""Convert an ASCII string literal into a bytes object"""
return s
bchr = chr
def u(s):
"""Convert an ASCII string literal into a unicode object"""
return s.decode('ascii')
else:
def b(s):
"""Convert an ASCII string literal into a bytes object"""
return s.encode('ascii')
def bchr(i):
"""Return a bytes character for a given integer value"""
return bytestype([i])
def u(s):
"""Convert an ASCII string literal into a unicode object"""
return s
try:
eval(r'u""')
except SyntaxError:
ul = eval
else:
def ul(e):
"""Evaluate e as a unicode string literal"""
return eval('u' + e)
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