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Use nt.environ on windows

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This commit is contained in:
Anthony Scopatz 2017-02-27 01:35:09 -05:00
parent 8920cc3d4e
commit b3e6a80191
9 changed files with 67 additions and 36 deletions
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16
news/ntenv.rst Normal file
View file

@ -0,0 +1,16 @@
**Added:** None
**Changed:** None
**Deprecated:** None
**Removed:** None
**Fixed:**
* On Windows, ``os.environ`` is case insensitive. This would potentially
change the case of envrionment variables set into the environment.
Xonsh now uses ``nt.envrion``, the case sensitive counterpart, to avoid
these issues on Windows.
**Security:** None

42
xonsh/environ.py
View file

@ -22,7 +22,7 @@ from xonsh.foreign_shells import load_foreign_envs, load_foreign_aliases
from xonsh.xontribs import update_context, prompt_xontrib_install
from xonsh.platform import (
BASH_COMPLETIONS_DEFAULT, DEFAULT_ENCODING, PATH_DEFAULT,
ON_WINDOWS, ON_LINUX
ON_WINDOWS, ON_LINUX, os_environ
)
from xonsh.tools import (
@ -240,7 +240,7 @@ def default_xonshrc(env):
"""Creates a new instance of the default xonshrc tuple."""
if ON_WINDOWS:
dxrc = (xonshconfig(env),
os.path.join(os.environ['ALLUSERSPROFILE'],
os.path.join(os_environ['ALLUSERSPROFILE'],
'xonsh', 'xonshrc'),
os.path.expanduser('~/.xonshrc'))
else:
@ -599,7 +599,7 @@ def DEFAULT_DOCS():
'the possibilities. This currently only affects the prompt-toolkit shell.'
),
'UPDATE_OS_ENVIRON': VarDocs(
"If True ``os.environ`` will always be updated "
"If True ``os_environ`` will always be updated "
"when the xonsh environment changes. The environment can be reset to "
"the default value by calling ``__xonsh_env__.undo_replace_env()``"),
'UPDATE_PROMPT_ON_KEYPRESS': VarDocs(
@ -775,7 +775,7 @@ class Env(cabc.MutableMapping):
_arg_regex = None
def __init__(self, *args, **kwargs):
"""If no initial environment is given, os.environ is used."""
"""If no initial environment is given, os_environ is used."""
self._d = {}
# sentinel value for non existing envvars
self._no_value = object()
@ -784,7 +784,7 @@ class Env(cabc.MutableMapping):
self._defaults = DEFAULT_VALUES
self._docs = DEFAULT_DOCS
if len(args) == 0 and len(kwargs) == 0:
args = (os.environ,)
args = (os_environ,)
for key, val in dict(*args, **kwargs).items():
self[key] = val
if 'PATH' not in self._d:
@ -819,21 +819,21 @@ class Env(cabc.MutableMapping):
return ctx
def replace_env(self):
"""Replaces the contents of os.environ with a detyped version
"""Replaces the contents of os_environ with a detyped version
of the xonsh environement.
"""
if self._orig_env is None:
self._orig_env = dict(os.environ)
os.environ.clear()
os.environ.update(self.detype())
self._orig_env = dict(os_environ)
os_environ.clear()
os_environ.update(self.detype())
def undo_replace_env(self):
"""Replaces the contents of os.environ with a detyped version
"""Replaces the contents of os_environ with a detyped version
of the xonsh environement.
"""
if self._orig_env is not None:
os.environ.clear()
os.environ.update(self._orig_env)
os_environ.clear()
os_environ.update(self._orig_env)
self._orig_env = None
def get_ensurer(self, key,
@ -952,7 +952,7 @@ class Env(cabc.MutableMapping):
if self._orig_env is None:
self.replace_env()
else:
os.environ[key] = ensurer.detype(val)
os_environ[key] = ensurer.detype(val)
if old_value is self._no_value:
events.on_envvar_new.fire(name=key, value=val)
elif old_value != val:
@ -964,8 +964,8 @@ class Env(cabc.MutableMapping):
val = self._d.pop(key)
if self.detypeable(val):
self._detyped = None
if self.get('UPDATE_OS_ENVIRON') and key in os.environ:
del os.environ[key]
if self.get('UPDATE_OS_ENVIRON') and key in os_environ:
del os_environ[key]
def get(self, key, default=None):
"""The environment will look up default values from its own defaults if a
@ -1047,10 +1047,10 @@ def load_static_config(ctx, config=None):
config = env['XONSHCONFIG'] = xonshconfig(env)
if os.path.isfile(config):
# Note that an Env instance at __xonsh_env__ has not been started yet,
# per se, so we have to use os.environ
encoding = os.environ.get('XONSH_ENCODING',
# per se, so we have to use os_environ
encoding = os_environ.get('XONSH_ENCODING',
DEFAULT_VALUES.get('XONSH_ENCODING', 'utf8'))
errors = os.environ.get('XONSH_ENCODING_ERRORS',
errors = os_environ.get('XONSH_ENCODING_ERRORS',
DEFAULT_VALUES.get('XONSH_ENCODING_ERRORS',
'surrogateescape'))
with open(config, 'r', encoding=encoding, errors=errors) as f:
@ -1109,8 +1109,8 @@ def windows_foreign_env_fixes(ctx):
# /c/Windows/System32 syntax instead of C:\\Windows\\System32
# which messes up these environment variables for xonsh.
for ev in ['PATH', 'TEMP', 'TMP']:
if ev in os.environ:
ctx[ev] = os.environ[ev]
if ev in os_environ:
ctx[ev] = os_environ[ev]
elif ev in ctx:
del ctx[ev]
ctx['PWD'] = _get_cwd() or ''
@ -1181,7 +1181,7 @@ def default_env(env=None):
"""Constructs a default xonsh environment."""
# in order of increasing precedence
ctx = dict(BASE_ENV)
ctx.update(os.environ)
ctx.update(os_environ)
ctx['PWD'] = _get_cwd() or ''
# other shells' PROMPT definitions generally don't work in XONSH:
try:

4
xonsh/foreign_shells.py
View file

@ -14,7 +14,7 @@ import collections.abc as cabc
from xonsh.lazyasd import lazyobject
from xonsh.tools import to_bool, ensure_string
from xonsh.platform import ON_WINDOWS, ON_CYGWIN
from xonsh.platform import ON_WINDOWS, ON_CYGWIN, os_environ
COMMAND = """{seterrprevcmd}
{prevcmd}
@ -539,7 +539,7 @@ def _get_shells(shells=None, config=None, issue_warning=True):
elif shells is not None:
pass
else:
env = getattr(builtins, '__xonsh_env__', os.environ)
env = getattr(builtins, '__xonsh_env__', os_environ)
if env.get('LOADED_CONFIG', False):
conf = builtins.__xonsh_config__
else:

14
xonsh/platform.py
View file

@ -359,6 +359,20 @@ def windows_bash_command():
#
@lazyobject
def os_environ():
"""This dispatches to the correct, case-senstive version of os.envrion.
This is mainly a problem for Windows. See #2024 for more details.
This can probably go away once support for Python v3.5 or v3.6 is
dropped.
"""
if ON_WINDOWS:
import nt
return nt.environ
else:
return os.environ
@functools.lru_cache(1)
def bash_command():
"""Determines the command for Bash on the current plaform."""

2
xonsh/prompt/base.py
View file

@ -92,7 +92,7 @@ class PromptFormatter:
@xl.lazyobject
def PROMPT_FIELDS():
return dict(
user=os.environ.get('USERNAME' if xp.ON_WINDOWS else 'USER', '<user>'),
user=xp.os_environ.get('USERNAME' if xp.ON_WINDOWS else 'USER', '<user>'),
prompt_end='#' if xt.is_superuser() else '$',
hostname=socket.gethostname().split('.', 1)[0],
cwd=_dynamically_collapsed_pwd,

5
xonsh/pyghooks.py
View file

@ -28,6 +28,7 @@ from xonsh.color_tools import (RE_BACKGROUND, BASE_XONSH_COLORS, make_pallete,
find_closest_color)
from xonsh.style_tools import norm_name
from xonsh.lazyimps import terminal256
from xonsh.platform import os_environ
load_module_in_background('pkg_resources', debug='XONSH_DEBUG',
replacements={'pygments.plugin': 'pkg_resources'})
@ -86,7 +87,7 @@ class XonshLexer(PythonLexer):
if not hasattr(builtins, '__xonsh_env__'):
setattr(builtins, '__xonsh_env__', {})
if ON_WINDOWS:
pathext = os.environ.get('PATHEXT', ['.EXE', '.BAT', '.CMD'])
pathext = os_environ.get('PATHEXT', ['.EXE', '.BAT', '.CMD'])
builtins.__xonsh_env__['PATHEXT'] = pathext.split(os.pathsep)
if not hasattr(builtins, '__xonsh_commands_cache__'):
setattr(builtins, '__xonsh_commands_cache__', CommandsCache())
@ -735,7 +736,7 @@ def _default_style():
Color.WHITE: '#ansilightgray',
Color.YELLOW: '#ansibrown',
}
elif ON_WINDOWS and 'CONEMUANSI' not in os.environ:
elif ON_WINDOWS and 'CONEMUANSI' not in os_environ:
# These colors must match the color specification
# in prompt_toolkit, so the colors are converted
# correctly when using cmd.exe

4
xonsh/readline_shell.py
View file

@ -28,7 +28,7 @@ from xonsh.ansi_colors import (ansi_partial_color_format, ansi_color_style_names
from xonsh.prompt.base import multiline_prompt
from xonsh.tools import (print_exception, check_for_partial_string, to_bool,
columnize, carriage_return)
from xonsh.platform import ON_WINDOWS, ON_CYGWIN, ON_DARWIN, ON_POSIX
from xonsh.platform import ON_WINDOWS, ON_CYGWIN, ON_DARWIN, ON_POSIX, os_environ
from xonsh.lazyimps import pygments, pyghooks, winutils
from xonsh.events import events
@ -117,7 +117,7 @@ def setup_readline():
else:
readline.parse_and_bind("tab: complete")
# try to load custom user settings
inputrc_name = os.environ.get('INPUTRC')
inputrc_name = os_environ.get('INPUTRC')
if inputrc_name is None:
if uses_libedit:
inputrc_name = '.editrc'

10
xonsh/tools.py
View file

@ -40,7 +40,7 @@ import warnings
from xonsh.lazyasd import LazyObject, LazyDict, lazyobject
from xonsh.platform import (has_prompt_toolkit, scandir, DEFAULT_ENCODING,
ON_LINUX, ON_WINDOWS, PYTHON_VERSION_INFO,
expanduser)
expanduser, os_environ)
@functools.lru_cache(1)
@ -85,7 +85,7 @@ class XonshCalledProcessError(XonshError, subprocess.CalledProcessError):
def expand_path(s, expand_user=True):
"""Takes a string path and expands ~ to home if expand_user is set
and environment vars if EXPAND_ENV_VARS is set."""
env = getattr(builtins, '__xonsh_env__', os.environ)
env = getattr(builtins, '__xonsh_env__', os_environ)
if env.get('EXPAND_ENV_VARS', False):
s = expandvars(s)
if expand_user:
@ -106,7 +106,7 @@ def _expandpath(path):
"""Performs environment variable / user expansion on a given path
if EXPAND_ENV_VARS is set.
"""
env = getattr(builtins, '__xonsh_env__', os.environ)
env = getattr(builtins, '__xonsh_env__', os_environ)
expand_user = env.get('EXPAND_ENV_VARS', False)
return expand_path(path, expand_user=expand_user)
@ -115,7 +115,7 @@ def decode_bytes(b):
"""Tries to decode the bytes using XONSH_ENCODING if available,
otherwise using sys.getdefaultencoding().
"""
env = getattr(builtins, '__xonsh_env__', os.environ)
env = getattr(builtins, '__xonsh_env__', os_environ)
enc = env.get('XONSH_ENCODING') or DEFAULT_ENCODING
err = env.get('XONSH_ENCODING_ERRORS') or 'strict'
return b.decode(encoding=enc, errors=err)
@ -745,7 +745,7 @@ def print_exception(msg=None):
env = getattr(builtins, '__xonsh_env__', None)
# flags indicating whether the traceback options have been manually set
if env is None:
env = os.environ
env = os_environ
manually_set_trace = 'XONSH_SHOW_TRACEBACK' in env
manually_set_logfile = 'XONSH_TRACEBACK_LOGFILE' in env
else:

6
xonsh/xoreutils/which.py
View file

@ -124,15 +124,15 @@ def which(args, stdin=None, stdout=None, stderr=None, spec=None):
# which.whichgen gives the nicest 'verbose' output if PATH is taken
# from os.environ so we temporarily override it with
# __xosnh_env__['PATH']
original_os_path = os.environ['PATH']
os.environ['PATH'] = builtins.__xonsh_env__.detype()['PATH']
original_os_path = xp.os_environ['PATH']
xp.os_environ['PATH'] = builtins.__xonsh_env__.detype()['PATH']
matches = _which.whichgen(arg, exts=exts, verbose=verbose)
for abs_name, from_where in matches:
print_path(abs_name, from_where, stdout, verbose, captured)
nmatches += 1
if not pargs.all:
break
os.environ['PATH'] = original_os_path
os_environ['PATH'] = original_os_path
if not nmatches:
failures.append(arg)
if len(failures) == 0: