106
105
mod = os.lstat(filename).st_mode
107
106
if not stat.S_ISLNK(mod):
108
107
mod = mod & 0777555
109
chmod_if_possible(filename, mod)
108
os.chmod(filename, mod)
112
111
def make_writable(filename):
113
112
mod = os.lstat(filename).st_mode
114
113
if not stat.S_ISLNK(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" % (
115
os.chmod(filename, mod)
138
118
def minimum_path_selection(paths):
290
270
rename_func(tmp_name, new)
291
271
if failure_exc is not None:
293
raise failure_exc[0], failure_exc[1], failure_exc[2]
272
raise failure_exc[0], failure_exc[1], failure_exc[2]
298
275
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
299
276
# choke on a Unicode string containing a relative path if
300
277
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
279
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
302
280
def _posix_abspath(path):
303
281
# jam 20060426 rather than encoding to fsencoding
304
282
# copy posixpath.abspath, but use os.getcwdu instead
305
283
if not posixpath.isabs(path):
306
284
path = posixpath.join(getcwd(), path)
307
return _posix_normpath(path)
285
return posixpath.normpath(path)
310
288
def _posix_realpath(path):
311
289
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_get_home_dir():
346
"""Get the home directory of the current user as a unicode path"""
347
path = posixpath.expanduser("~")
349
return path.decode(_fs_enc)
350
except UnicodeDecodeError:
351
raise errors.BadFilenameEncoding(path, _fs_enc)
354
def _posix_getuser_unicode():
355
"""Get username from environment or password database as unicode"""
356
name = getpass.getuser()
357
user_encoding = get_user_encoding()
359
return name.decode(user_encoding)
360
except UnicodeDecodeError:
361
raise errors.BzrError("Encoding of username %r is unsupported by %s "
362
"application locale." % (name, user_encoding))
365
292
def _win32_fixdrive(path):
366
293
"""Force drive letters to be consistent.
960
881
return os.fstat(f.fileno())[stat.ST_SIZE]
963
# Alias os.urandom to support platforms (which?) without /dev/urandom and
964
# override if it doesn't work. Avoid checking on windows where there is
965
# significant initialisation cost that can be avoided for some bzr calls.
967
rand_bytes = os.urandom
969
if rand_bytes.__module__ != "nt":
884
# Define rand_bytes based on platform.
886
# Python 2.4 and later have os.urandom,
887
# but it doesn't work on some arches
889
rand_bytes = os.urandom
890
except (NotImplementedError, AttributeError):
891
# If python doesn't have os.urandom, or it doesn't work,
892
# then try to first pull random data from /dev/urandom
972
except NotImplementedError:
894
rand_bytes = file('/dev/urandom', 'rb').read
895
# Otherwise, use this hack as a last resort
896
except (IOError, OSError):
973
897
# not well seeded, but better than nothing
974
898
def rand_bytes(n):
1991
1918
_cached_user_encoding = None
1994
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1921
def get_user_encoding(use_cache=True):
1995
1922
"""Find out what the preferred user encoding is.
1997
1924
This is generally the encoding that is used for command line parameters
1998
1925
and file contents. This may be different from the terminal encoding
1999
1926
or the filesystem encoding.
1928
:param use_cache: Enable cache for detected encoding.
1929
(This parameter is turned on by default,
1930
and required only for selftesting)
2001
1932
:return: A string defining the preferred user encoding
2003
1934
global _cached_user_encoding
2004
if deprecated_passed(use_cache):
2005
warn_deprecated("use_cache should only have been used for tests",
2006
DeprecationWarning, stacklevel=2)
2007
if _cached_user_encoding is not None:
1935
if _cached_user_encoding is not None and use_cache:
2008
1936
return _cached_user_encoding
2010
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2011
# Use the existing locale settings and call nl_langinfo directly
2012
# rather than going through getpreferredencoding. This avoids
2013
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2014
# possibility of the setlocale call throwing an error.
2015
user_encoding = locale.nl_langinfo(locale.CODESET)
1938
if sys.platform == 'darwin':
1939
# python locale.getpreferredencoding() always return
1940
# 'mac-roman' on darwin. That's a lie.
1941
sys.platform = 'posix'
1943
if os.environ.get('LANG', None) is None:
1944
# If LANG is not set, we end up with 'ascii', which is bad
1945
# ('mac-roman' is more than ascii), so we set a default which
1946
# will give us UTF-8 (which appears to work in all cases on
1947
# OSX). Users are still free to override LANG of course, as
1948
# long as it give us something meaningful. This work-around
1949
# *may* not be needed with python 3k and/or OSX 10.5, but will
1950
# work with them too -- vila 20080908
1951
os.environ['LANG'] = 'en_US.UTF-8'
1954
sys.platform = 'darwin'
2017
# GZ 2011-12-19: On windows could call GetACP directly instead.
2018
user_encoding = locale.getpreferredencoding(False)
2021
user_encoding = codecs.lookup(user_encoding).name
2023
if user_encoding not in ("", "cp0"):
1959
user_encoding = locale.getpreferredencoding()
1960
except locale.Error, e:
1961
sys.stderr.write('bzr: warning: %s\n'
1962
' Could not determine what text encoding to use.\n'
1963
' This error usually means your Python interpreter\n'
1964
' doesn\'t support the locale set by $LANG (%s)\n'
1965
" Continuing with ascii encoding.\n"
1966
% (e, os.environ.get('LANG')))
1967
user_encoding = 'ascii'
1969
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1970
# treat that as ASCII, and not support printing unicode characters to the
1973
# For python scripts run under vim, we get '', so also treat that as ASCII
1974
if user_encoding in (None, 'cp0', ''):
1975
user_encoding = 'ascii'
1979
codecs.lookup(user_encoding)
2024
1981
sys.stderr.write('bzr: warning:'
2025
1982
' unknown encoding %s.'
2026
1983
' Continuing with ascii encoding.\n'
2027
1984
% user_encoding
2029
user_encoding = 'ascii'
2031
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2032
if user_encoding == 'ascii':
2033
if sys.platform == 'darwin':
2034
# OSX is special-cased in Python to have a UTF-8 filesystem
2035
# encoding and previously had LANG set here if not present.
2036
user_encoding = 'utf-8'
2037
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2038
# for some other posix platforms as well.
2040
_cached_user_encoding = user_encoding
1986
user_encoding = 'ascii'
1989
_cached_user_encoding = user_encoding
2041
1991
return user_encoding
2232
2183
return file_kind_from_stat_mode(mode)
2233
2184
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2235
def file_stat(f, _lstat=os.lstat):
2187
def file_kind(f, _lstat=os.lstat):
2189
return file_kind_from_stat_mode(_lstat(f).st_mode)
2239
2190
except OSError, e:
2240
2191
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2241
2192
raise errors.NoSuchFile(f)
2244
def file_kind(f, _lstat=os.lstat):
2245
stat_value = file_stat(f, _lstat)
2246
return file_kind_from_stat_mode(stat_value.st_mode)
2248
2196
def until_no_eintr(f, *a, **kw):
2249
2197
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2494
2453
if os.access(f, os.X_OK):
2499
def _posix_is_local_pid_dead(pid):
2500
"""True if pid doesn't correspond to live process on this machine"""
2502
# Special meaning of unix kill: just check if it's there.
2505
if e.errno == errno.ESRCH:
2506
# On this machine, and really not found: as sure as we can be
2509
elif e.errno == errno.EPERM:
2510
# exists, though not ours
2513
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2514
# Don't really know.
2517
# Exists and our process: not dead.
2520
if sys.platform == "win32":
2521
is_local_pid_dead = win32utils.is_local_pid_dead
2523
is_local_pid_dead = _posix_is_local_pid_dead
2526
def fdatasync(fileno):
2527
"""Flush file contents to disk if possible.
2529
:param fileno: Integer OS file handle.
2530
:raises TransportNotPossible: If flushing to disk is not possible.
2532
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2537
def ensure_empty_directory_exists(path, exception_class):
2538
"""Make sure a local directory exists and is empty.
2540
If it does not exist, it is created. If it exists and is not empty, an
2541
instance of exception_class is raised.
2546
if e.errno != errno.EEXIST:
2548
if os.listdir(path) != []:
2549
raise exception_class(path)
2552
def is_environment_error(evalue):
2553
"""True if exception instance is due to a process environment issue
2555
This includes OSError and IOError, but also other errors that come from
2556
the operating system or core libraries but are not subclasses of those.
2558
if isinstance(evalue, (EnvironmentError, select.error)):
2560
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
added
removed
bzrlib/osutils.py
