97
106
mod = os.lstat(filename).st_mode
98
107
if not stat.S_ISLNK(mod):
99
108
mod = mod & 0777555
100
os.chmod(filename, mod)
109
chmod_if_possible(filename, mod)
103
112
def make_writable(filename):
104
113
mod = os.lstat(filename).st_mode
105
114
if not stat.S_ISLNK(mod):
107
os.chmod(filename, mod)
116
chmod_if_possible(filename, mod)
119
def chmod_if_possible(filename, mode):
120
# Set file mode if that can be safely done.
121
# Sometimes even on unix the filesystem won't allow it - see
122
# https://bugs.launchpad.net/bzr/+bug/606537
124
# It is probably faster to just do the chmod, rather than
125
# doing a stat, and then trying to compare
126
os.chmod(filename, mode)
127
except (IOError, OSError),e:
128
# Permission/access denied seems to commonly happen on smbfs; there's
129
# probably no point warning about it.
130
# <https://bugs.launchpad.net/bzr/+bug/606537>
131
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
132
trace.mutter("ignore error on chmod of %r: %r" % (
110
138
def minimum_path_selection(paths):
271
299
# choke on a Unicode string containing a relative path if
272
300
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
274
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
275
302
def _posix_abspath(path):
276
303
# jam 20060426 rather than encoding to fsencoding
277
304
# copy posixpath.abspath, but use os.getcwdu instead
278
305
if not posixpath.isabs(path):
279
306
path = posixpath.join(getcwd(), path)
280
return posixpath.normpath(path)
307
return _posix_normpath(path)
283
310
def _posix_realpath(path):
284
311
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
314
def _posix_normpath(path):
315
path = posixpath.normpath(path)
316
# Bug 861008: posixpath.normpath() returns a path normalized according to
317
# the POSIX standard, which stipulates (for compatibility reasons) that two
318
# leading slashes must not be simplified to one, and only if there are 3 or
319
# more should they be simplified as one. So we treat the leading 2 slashes
320
# as a special case here by simply removing the first slash, as we consider
321
# that breaking POSIX compatibility for this obscure feature is acceptable.
322
# This is not a paranoid precaution, as we notably get paths like this when
323
# the repo is hosted at the root of the filesystem, i.e. in "/".
324
if path.startswith('//'):
329
def _posix_path_from_environ(key):
330
"""Get unicode path from `key` in environment or None if not present
332
Note that posix systems use arbitrary byte strings for filesystem objects,
333
so a path that raises BadFilenameEncoding here may still be accessible.
335
val = os.environ.get(key, None)
339
return val.decode(_fs_enc)
340
except UnicodeDecodeError:
341
# GZ 2011-12-12:Ideally want to include `key` in the exception message
342
raise errors.BadFilenameEncoding(val, _fs_enc)
345
def _posix_getuser_unicode():
346
"""Get username from environment or password database as unicode"""
347
name = getpass.getuser()
348
user_encoding = get_user_encoding()
350
return name.decode(user_encoding)
351
except UnicodeDecodeError:
352
raise errors.BzrError("Encoding of username %r is unsupported by %s "
353
"application locale." % (name, user_encoding))
287
356
def _win32_fixdrive(path):
288
357
"""Force drive letters to be consistent.
876
949
return os.fstat(f.fileno())[stat.ST_SIZE]
879
# Define rand_bytes based on platform.
881
# Python 2.4 and later have os.urandom,
882
# but it doesn't work on some arches
884
rand_bytes = os.urandom
885
except (NotImplementedError, AttributeError):
886
# If python doesn't have os.urandom, or it doesn't work,
887
# then try to first pull random data from /dev/urandom
952
# Alias os.urandom to support platforms (which?) without /dev/urandom and
953
# override if it doesn't work. Avoid checking on windows where there is
954
# significant initialisation cost that can be avoided for some bzr calls.
956
rand_bytes = os.urandom
958
if rand_bytes.__module__ != "nt":
889
rand_bytes = file('/dev/urandom', 'rb').read
890
# Otherwise, use this hack as a last resort
891
except (IOError, OSError):
961
except NotImplementedError:
892
962
# not well seeded, but better than nothing
893
963
def rand_bytes(n):
1913
1980
_cached_user_encoding = None
1916
def get_user_encoding(use_cache=True):
1983
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1917
1984
"""Find out what the preferred user encoding is.
1919
1986
This is generally the encoding that is used for command line parameters
1920
1987
and file contents. This may be different from the terminal encoding
1921
1988
or the filesystem encoding.
1923
:param use_cache: Enable cache for detected encoding.
1924
(This parameter is turned on by default,
1925
and required only for selftesting)
1927
1990
:return: A string defining the preferred user encoding
1929
1992
global _cached_user_encoding
1930
if _cached_user_encoding is not None and use_cache:
1993
if deprecated_passed(use_cache):
1994
warn_deprecated("use_cache should only have been used for tests",
1995
DeprecationWarning, stacklevel=2)
1996
if _cached_user_encoding is not None:
1931
1997
return _cached_user_encoding
1933
if sys.platform == 'darwin':
1934
# python locale.getpreferredencoding() always return
1935
# 'mac-roman' on darwin. That's a lie.
1936
sys.platform = 'posix'
1938
if os.environ.get('LANG', None) is None:
1939
# If LANG is not set, we end up with 'ascii', which is bad
1940
# ('mac-roman' is more than ascii), so we set a default which
1941
# will give us UTF-8 (which appears to work in all cases on
1942
# OSX). Users are still free to override LANG of course, as
1943
# long as it give us something meaningful. This work-around
1944
# *may* not be needed with python 3k and/or OSX 10.5, but will
1945
# work with them too -- vila 20080908
1946
os.environ['LANG'] = 'en_US.UTF-8'
1949
sys.platform = 'darwin'
1999
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2000
# Use the existing locale settings and call nl_langinfo directly
2001
# rather than going through getpreferredencoding. This avoids
2002
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2003
# possibility of the setlocale call throwing an error.
2004
user_encoding = locale.nl_langinfo(locale.CODESET)
2006
# GZ 2011-12-19: On windows could call GetACP directly instead.
2007
user_encoding = locale.getpreferredencoding(False)
1954
user_encoding = locale.getpreferredencoding()
1955
except locale.Error, e:
1956
sys.stderr.write('bzr: warning: %s\n'
1957
' Could not determine what text encoding to use.\n'
1958
' This error usually means your Python interpreter\n'
1959
' doesn\'t support the locale set by $LANG (%s)\n'
1960
" Continuing with ascii encoding.\n"
1961
% (e, os.environ.get('LANG')))
1962
user_encoding = 'ascii'
1964
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1965
# treat that as ASCII, and not support printing unicode characters to the
1968
# For python scripts run under vim, we get '', so also treat that as ASCII
1969
if user_encoding in (None, 'cp0', ''):
1970
user_encoding = 'ascii'
1974
codecs.lookup(user_encoding)
2010
user_encoding = codecs.lookup(user_encoding).name
2012
if user_encoding not in ("", "cp0"):
1976
2013
sys.stderr.write('bzr: warning:'
1977
2014
' unknown encoding %s.'
1978
2015
' Continuing with ascii encoding.\n'
1979
2016
% user_encoding
1981
user_encoding = 'ascii'
1984
_cached_user_encoding = user_encoding
2018
user_encoding = 'ascii'
2020
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2021
if user_encoding == 'ascii':
2022
if sys.platform == 'darwin':
2023
# OSX is special-cased in Python to have a UTF-8 filesystem
2024
# encoding and previously had LANG set here if not present.
2025
user_encoding = 'utf-8'
2026
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2027
# for some other posix platforms as well.
2029
_cached_user_encoding = user_encoding
1986
2030
return user_encoding
2178
2221
return file_kind_from_stat_mode(mode)
2179
2222
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2182
def file_kind(f, _lstat=os.lstat):
2224
def file_stat(f, _lstat=os.lstat):
2184
return file_kind_from_stat_mode(_lstat(f).st_mode)
2185
2228
except OSError, e:
2186
2229
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2187
2230
raise errors.NoSuchFile(f)
2233
def file_kind(f, _lstat=os.lstat):
2234
stat_value = file_stat(f, _lstat)
2235
return file_kind_from_stat_mode(stat_value.st_mode)
2191
2237
def until_no_eintr(f, *a, **kw):
2192
2238
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2448
2483
if os.access(f, os.X_OK):
2488
def _posix_is_local_pid_dead(pid):
2489
"""True if pid doesn't correspond to live process on this machine"""
2491
# Special meaning of unix kill: just check if it's there.
2494
if e.errno == errno.ESRCH:
2495
# On this machine, and really not found: as sure as we can be
2498
elif e.errno == errno.EPERM:
2499
# exists, though not ours
2502
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2503
# Don't really know.
2506
# Exists and our process: not dead.
2509
if sys.platform == "win32":
2510
is_local_pid_dead = win32utils.is_local_pid_dead
2512
is_local_pid_dead = _posix_is_local_pid_dead
2515
def fdatasync(fileno):
2516
"""Flush file contents to disk if possible.
2518
:param fileno: Integer OS file handle.
2519
:raises TransportNotPossible: If flushing to disk is not possible.
2521
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2526
def ensure_empty_directory_exists(path, exception_class):
2527
"""Make sure a local directory exists and is empty.
2529
If it does not exist, it is created. If it exists and is not empty, an
2530
instance of exception_class is raised.
2535
if e.errno != errno.EEXIST:
2537
if os.listdir(path) != []:
2538
raise exception_class(path)
2541
def is_environment_error(evalue):
2542
"""True if exception instance is due to a process environment issue
2544
This includes OSError and IOError, but also other errors that come from
2545
the operating system or core libraries but are not subclasses of those.
2547
if isinstance(evalue, (EnvironmentError, select.error)):
2549
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
added
removed
bzrlib/osutils.py
