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Issue #8514: Add os.fsencode() function (Unix only): encode a string to bytes

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for use in the file system, environment variables or the command line.
This commit is contained in:
Victor Stinner 2010-05-08 11:10:09 +00:00
parent 4cda46ab91
commit 449c466e7d
4 changed files with 28 additions and 11 deletions
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14
Lib/subprocess.py
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@ -1079,32 +1079,24 @@ class Popen(object):
self._set_cloexec_flag(errpipe_write)
if _posixsubprocess:
fs_encoding = sys.getfilesystemencoding()
def fs_encode(s):
"""Encode s for use in the env, fs or cmdline."""
if isinstance(s, bytes):
return s
else:
return s.encode(fs_encoding, 'surrogateescape')
# We must avoid complex work that could involve
# malloc or free in the child process to avoid
# potential deadlocks, thus we do all this here.
# and pass it to fork_exec()
if env:
env_list = [fs_encode(k) + b'=' + fs_encode(v)
env_list = [os.fsencode(k) + b'=' + os.fsencode(v)
for k, v in env.items()]
else:
env_list = None # Use execv instead of execve.
if os.path.dirname(executable):
executable_list = (fs_encode(executable),)
executable_list = (os.fsencode(executable),)
else:
# This matches the behavior of os._execvpe().
path_list = os.get_exec_path(env)
executable_list = (os.path.join(dir, executable)
for dir in path_list)
executable_list = tuple(fs_encode(exe)
executable_list = tuple(os.fsencode(exe)
for exe in executable_list)
self.pid = _posixsubprocess.fork_exec(
args, executable_list,