105
106
mod = os.lstat(filename).st_mode
106
107
if not stat.S_ISLNK(mod):
107
108
mod = mod & 0777555
108
os.chmod(filename, mod)
109
chmod_if_possible(filename, mod)
111
112
def make_writable(filename):
112
113
mod = os.lstat(filename).st_mode
113
114
if not stat.S_ISLNK(mod):
115
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" % (
118
138
def minimum_path_selection(paths):
270
290
rename_func(tmp_name, new)
271
291
if failure_exc is not None:
272
raise failure_exc[0], failure_exc[1], failure_exc[2]
293
raise failure_exc[0], failure_exc[1], failure_exc[2]
275
298
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
276
299
# choke on a Unicode string containing a relative path if
277
300
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
279
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
280
302
def _posix_abspath(path):
281
303
# jam 20060426 rather than encoding to fsencoding
282
304
# copy posixpath.abspath, but use os.getcwdu instead
283
305
if not posixpath.isabs(path):
284
306
path = posixpath.join(getcwd(), path)
285
return posixpath.normpath(path)
307
return _posix_normpath(path)
288
310
def _posix_realpath(path):
289
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))
292
356
def _win32_fixdrive(path):
293
357
"""Force drive letters to be consistent.
867
949
return os.fstat(f.fileno())[stat.ST_SIZE]
870
# Define rand_bytes based on platform.
872
# Python 2.4 and later have os.urandom,
873
# but it doesn't work on some arches
875
rand_bytes = os.urandom
876
except (NotImplementedError, AttributeError):
877
# If python doesn't have os.urandom, or it doesn't work,
878
# 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":
880
rand_bytes = file('/dev/urandom', 'rb').read
881
# Otherwise, use this hack as a last resort
882
except (IOError, OSError):
961
except NotImplementedError:
883
962
# not well seeded, but better than nothing
884
963
def rand_bytes(n):
1896
1980
_cached_user_encoding = None
1899
def get_user_encoding(use_cache=True):
1983
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1900
1984
"""Find out what the preferred user encoding is.
1902
1986
This is generally the encoding that is used for command line parameters
1903
1987
and file contents. This may be different from the terminal encoding
1904
1988
or the filesystem encoding.
1906
:param use_cache: Enable cache for detected encoding.
1907
(This parameter is turned on by default,
1908
and required only for selftesting)
1910
1990
:return: A string defining the preferred user encoding
1912
1992
global _cached_user_encoding
1913
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:
1914
1997
return _cached_user_encoding
1916
if sys.platform == 'darwin':
1917
# python locale.getpreferredencoding() always return
1918
# 'mac-roman' on darwin. That's a lie.
1919
sys.platform = 'posix'
1921
if os.environ.get('LANG', None) is None:
1922
# If LANG is not set, we end up with 'ascii', which is bad
1923
# ('mac-roman' is more than ascii), so we set a default which
1924
# will give us UTF-8 (which appears to work in all cases on
1925
# OSX). Users are still free to override LANG of course, as
1926
# long as it give us something meaningful. This work-around
1927
# *may* not be needed with python 3k and/or OSX 10.5, but will
1928
# work with them too -- vila 20080908
1929
os.environ['LANG'] = 'en_US.UTF-8'
1932
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)
1937
user_encoding = locale.getpreferredencoding()
1938
except locale.Error, e:
1939
sys.stderr.write('bzr: warning: %s\n'
1940
' Could not determine what text encoding to use.\n'
1941
' This error usually means your Python interpreter\n'
1942
' doesn\'t support the locale set by $LANG (%s)\n'
1943
" Continuing with ascii encoding.\n"
1944
% (e, os.environ.get('LANG')))
1945
user_encoding = 'ascii'
1947
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1948
# treat that as ASCII, and not support printing unicode characters to the
1951
# For python scripts run under vim, we get '', so also treat that as ASCII
1952
if user_encoding in (None, 'cp0', ''):
1953
user_encoding = 'ascii'
1957
codecs.lookup(user_encoding)
2010
user_encoding = codecs.lookup(user_encoding).name
2012
if user_encoding not in ("", "cp0"):
1959
2013
sys.stderr.write('bzr: warning:'
1960
2014
' unknown encoding %s.'
1961
2015
' Continuing with ascii encoding.\n'
1962
2016
% user_encoding
1964
user_encoding = 'ascii'
1967
_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
1969
2030
return user_encoding
2153
2221
return file_kind_from_stat_mode(mode)
2154
2222
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2157
def file_kind(f, _lstat=os.lstat):
2224
def file_stat(f, _lstat=os.lstat):
2159
return file_kind_from_stat_mode(_lstat(f).st_mode)
2160
2228
except OSError, e:
2161
2229
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2162
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)
2166
2237
def until_no_eintr(f, *a, **kw):
2167
2238
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2227
2298
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2231
if sys.platform == 'linux2':
2301
if sys.platform.startswith('linux'):
2232
2302
def _local_concurrency():
2234
prefix = 'processor'
2235
for line in file('/proc/cpuinfo', 'rb'):
2236
if line.startswith(prefix):
2237
concurrency = int(line[line.find(':')+1:]) + 1
2304
return os.sysconf('SC_NPROCESSORS_ONLN')
2305
except (ValueError, OSError, AttributeError):
2239
2307
elif sys.platform == 'darwin':
2240
2308
def _local_concurrency():
2241
2309
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2242
2310
stdout=subprocess.PIPE).communicate()[0]
2243
elif sys.platform[0:7] == 'freebsd':
2311
elif "bsd" in sys.platform:
2244
2312
def _local_concurrency():
2245
2313
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2246
2314
stdout=subprocess.PIPE).communicate()[0]
2274
2342
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2275
2343
if concurrency is None:
2277
concurrency = _local_concurrency()
2278
except (OSError, IOError):
2345
import multiprocessing
2346
concurrency = multiprocessing.cpu_count()
2347
except (ImportError, NotImplementedError):
2348
# multiprocessing is only available on Python >= 2.6
2349
# and multiprocessing.cpu_count() isn't implemented on all
2352
concurrency = _local_concurrency()
2353
except (OSError, IOError):
2281
2356
concurrency = int(concurrency)
2282
2357
except (TypeError, ValueError):
2344
2419
open_file = open
2347
def getuser_unicode():
2348
"""Return the username as unicode.
2351
user_encoding = get_user_encoding()
2352
username = getpass.getuser().decode(user_encoding)
2353
except UnicodeDecodeError:
2354
raise errors.BzrError("Can't decode username as %s." % \
2422
def available_backup_name(base, exists):
2423
"""Find a non-existing backup file name.
2425
This will *not* create anything, this only return a 'free' entry. This
2426
should be used for checking names in a directory below a locked
2427
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2428
Leap) and generally discouraged.
2430
:param base: The base name.
2432
:param exists: A callable returning True if the path parameter exists.
2435
name = "%s.~%d~" % (base, counter)
2438
name = "%s.~%d~" % (base, counter)
2442
def set_fd_cloexec(fd):
2443
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2444
support for this is not available.
2448
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2449
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2450
except (ImportError, AttributeError):
2451
# Either the fcntl module or specific constants are not present
2455
def find_executable_on_path(name):
2456
"""Finds an executable on the PATH.
2458
On Windows, this will try to append each extension in the PATHEXT
2459
environment variable to the name, if it cannot be found with the name
2462
:param name: The base name of the executable.
2463
:return: The path to the executable found or None.
2465
path = os.environ.get('PATH')
2468
path = path.split(os.pathsep)
2469
if sys.platform == 'win32':
2470
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2471
exts = [ext.lower() for ext in exts]
2472
base, ext = os.path.splitext(name)
2474
if ext.lower() not in exts:
2482
f = os.path.join(d, name) + ext
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
