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Issue #6815: os.path.expandvars() now supports non-ASCII environment

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variables names and values.
This commit is contained in:
Serhiy Storchaka 2014-02-13 10:14:48 +02:00
commit 7dfaa27fdd
5 changed files with 96 additions and 42 deletions
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60
Lib/ntpath.py
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@ -377,6 +377,7 @@ def expandvars(path):
percent = b'%'
brace = b'{'
dollar = b'$'
environ = getattr(os, 'environb', None)
else:
if '$' not in path and '%' not in path:
return path
@ -386,6 +387,7 @@ def expandvars(path):
percent = '%'
brace = '{'
dollar = '$'
environ = os.environ
res = path[:0]
index = 0
pathlen = len(path)
@ -414,14 +416,13 @@ def expandvars(path):
index = pathlen - 1
else:
var = path[:index]
if isinstance(path, bytes):
var = var.decode('ascii')
if var in os.environ:
value = os.environ[var]
else:
value = '%' + var + '%'
if isinstance(path, bytes):
value = value.encode('ascii')
try:
if environ is None:
value = os.fsencode(os.environ[os.fsdecode(var)])
else:
value = environ[var]
except KeyError:
value = percent + var + percent
res += value
elif c == dollar: # variable or '$$'
if path[index + 1:index + 2] == dollar:
@ -435,39 +436,40 @@ def expandvars(path):
index = path.index(b'}')
else:
index = path.index('}')
var = path[:index]
if isinstance(path, bytes):
var = var.decode('ascii')
if var in os.environ:
value = os.environ[var]
else:
value = '${' + var + '}'
if isinstance(path, bytes):
value = value.encode('ascii')
res += value
except ValueError:
if isinstance(path, bytes):
res += b'${' + path
else:
res += '${' + path
index = pathlen - 1
else:
var = path[:index]
try:
if environ is None:
value = os.fsencode(os.environ[os.fsdecode(var)])
else:
value = environ[var]
except KeyError:
if isinstance(path, bytes):
value = b'${' + var + b'}'
else:
value = '${' + var + '}'
res += value
else:
var = ''
var = path[:0]
index += 1
c = path[index:index + 1]
while c and c in varchars:
if isinstance(path, bytes):
var += c.decode('ascii')
else:
var += c
var += c
index += 1
c = path[index:index + 1]
if var in os.environ:
value = os.environ[var]
else:
value = '$' + var
if isinstance(path, bytes):
value = value.encode('ascii')
try:
if environ is None:
value = os.fsencode(os.environ[os.fsdecode(var)])
else:
value = environ[var]
except KeyError:
value = dollar + var
res += value
if c:
index -= 1