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[utils] Add posix expanduser implementation and clarify the original source
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@ -204,45 +204,79 @@ def compat_ord(c):
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else: return ord(c)
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# Environment variables should be decoded with filesystem encoding
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# otherwise this results in issues like #3854 #2918 #3217
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if sys.version_info >= (3, 0):
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compat_getenv = os.getenv
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compat_expanduser = os.path.expanduser
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else:
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# Environment variables should be decoded with filesystem encoding.
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# Otherwise it will fail if any non-ASCII characters present (see #3854 #3217 #2918)
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def compat_getenv(key, default=None):
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env = os.getenv(key, default)
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if env:
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env = env.decode(get_filesystem_encoding())
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return env
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def compat_expanduser(path):
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"""Expand ~ and ~user constructs.
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# HACK: The default implementations of os.path.expanduser from cpython do not decode
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# environment variables with filesystem encoding. We will work around this by
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# providing adjusted implementations.
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# The following are os.path.expanduser implementations from cpython 2.7.8 stdlib
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# for different platforms with correct environment variables decoding.
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If user or $HOME is unknown, do nothing."""
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if path[:1] != '~':
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return path
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i, n = 1, len(path)
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while i < n and path[i] not in '/\\':
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i += 1
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if os.name == 'posix':
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def compat_expanduser(path):
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"""Expand ~ and ~user constructions. If user or $HOME is unknown,
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do nothing."""
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if not path.startswith('~'):
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return path
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i = path.find('/', 1)
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if i < 0:
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i = len(path)
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if i == 1:
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if 'HOME' not in os.environ:
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import pwd
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userhome = pwd.getpwuid(os.getuid()).pw_dir
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else:
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userhome = compat_getenv('HOME')
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else:
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import pwd
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try:
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pwent = pwd.getpwnam(path[1:i])
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except KeyError:
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return path
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userhome = pwent.pw_dir
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userhome = userhome.rstrip('/')
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return (userhome + path[i:]) or '/'
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elif os.name == 'nt' or os.name == 'ce':
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def compat_expanduser(path):
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"""Expand ~ and ~user constructs.
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if 'HOME' in os.environ:
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userhome = compat_getenv('HOME')
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elif 'USERPROFILE' in os.environ:
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userhome = compat_getenv('USERPROFILE')
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elif not 'HOMEPATH' in os.environ:
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return path
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else:
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try:
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drive = compat_getenv('HOMEDRIVE')
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except KeyError:
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drive = ''
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userhome = os.path.join(drive, compat_getenv('HOMEPATH'))
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If user or $HOME is unknown, do nothing."""
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if path[:1] != '~':
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return path
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i, n = 1, len(path)
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while i < n and path[i] not in '/\\':
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i = i + 1
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if i != 1: # ~user
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userhome = os.path.join(os.path.dirname(userhome), path[1:i])
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if 'HOME' in os.environ:
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userhome = compat_getenv('HOME')
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elif 'USERPROFILE' in os.environ:
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userhome = compat_getenv('USERPROFILE')
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elif not 'HOMEPATH' in os.environ:
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return path
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else:
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try:
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drive = compat_getenv('HOMEDRIVE')
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except KeyError:
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drive = ''
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userhome = os.path.join(drive, compat_getenv('HOMEPATH'))
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return userhome + path[i:]
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if i != 1: #~user
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userhome = os.path.join(os.path.dirname(userhome), path[1:i])
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return userhome + path[i:]
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else:
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compat_expanduser = os.path.expanduser
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# This is not clearly defined otherwise
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