25
27
from bzrlib.lazy_import import lazy_import
26
28
lazy_import(globals(), """
27
29
from datetime import datetime
29
from ntpath import (abspath as _nt_abspath,
31
normpath as _nt_normpath,
32
realpath as _nt_realpath,
33
splitdrive as _nt_splitdrive,
35
# We need to import both shutil and rmtree as we export the later on posix
36
# and need the former on windows
38
from shutil import rmtree
41
# We need to import both tempfile and mkdtemp as we export the later on posix
42
# and need the former on windows
43
from tempfile import (
44
from tempfile import mkdtemp
48
47
from bzrlib import (
54
from bzrlib.i18n import gettext
56
57
from bzrlib.symbol_versioning import (
57
59
deprecated_function,
62
warn as warn_deprecated,
61
# sha and md5 modules are deprecated in python2.6 but hashlib is available as
63
if sys.version_info < (2, 5):
64
import md5 as _mod_md5
66
import sha as _mod_sha
76
from bzrlib import symbol_versioning
72
from bzrlib import symbol_versioning, _fs_enc
79
75
# Cross platform wall-clock time functionality with decent resolution.
110
106
mod = os.lstat(filename).st_mode
111
107
if not stat.S_ISLNK(mod):
112
108
mod = mod & 0777555
113
os.chmod(filename, mod)
109
chmod_if_possible(filename, mod)
116
112
def make_writable(filename):
117
113
mod = os.lstat(filename).st_mode
118
114
if not stat.S_ISLNK(mod):
120
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" % (
123
138
def minimum_path_selection(paths):
275
290
rename_func(tmp_name, new)
276
291
if failure_exc is not None:
277
raise failure_exc[0], failure_exc[1], failure_exc[2]
293
raise failure_exc[0], failure_exc[1], failure_exc[2]
280
298
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
281
299
# choke on a Unicode string containing a relative path if
282
300
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
284
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
285
302
def _posix_abspath(path):
286
303
# jam 20060426 rather than encoding to fsencoding
287
304
# copy posixpath.abspath, but use os.getcwdu instead
288
305
if not posixpath.isabs(path):
289
306
path = posixpath.join(getcwd(), path)
290
return posixpath.normpath(path)
307
return _posix_normpath(path)
293
310
def _posix_realpath(path):
294
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_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))
297
365
def _win32_fixdrive(path):
298
366
"""Force drive letters to be consistent.
303
371
running python.exe under cmd.exe return capital C:\\
304
372
running win32 python inside a cygwin shell returns lowercase c:\\
306
drive, path = _nt_splitdrive(path)
374
drive, path = ntpath.splitdrive(path)
307
375
return drive.upper() + path
310
378
def _win32_abspath(path):
311
# Real _nt_abspath doesn't have a problem with a unicode cwd
312
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
379
# Real ntpath.abspath doesn't have a problem with a unicode cwd
380
return _win32_fixdrive(ntpath.abspath(unicode(path)).replace('\\', '/'))
315
383
def _win98_abspath(path):
326
394
# /path => C:/path
327
395
path = unicode(path)
328
396
# check for absolute path
329
drive = _nt_splitdrive(path)[0]
397
drive = ntpath.splitdrive(path)[0]
330
398
if drive == '' and path[:2] not in('//','\\\\'):
331
399
cwd = os.getcwdu()
332
400
# we cannot simply os.path.join cwd and path
333
401
# because os.path.join('C:','/path') produce '/path'
334
402
# and this is incorrect
335
403
if path[:1] in ('/','\\'):
336
cwd = _nt_splitdrive(cwd)[0]
404
cwd = ntpath.splitdrive(cwd)[0]
338
406
path = cwd + '\\' + path
339
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
407
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
342
410
def _win32_realpath(path):
343
# Real _nt_realpath doesn't have a problem with a unicode cwd
344
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
411
# Real ntpath.realpath doesn't have a problem with a unicode cwd
412
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
347
415
def _win32_pathjoin(*args):
348
return _nt_join(*args).replace('\\', '/')
416
return ntpath.join(*args).replace('\\', '/')
351
419
def _win32_normpath(path):
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
420
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
355
423
def _win32_getcwd():
405
455
abspath = _posix_abspath
406
456
realpath = _posix_realpath
407
457
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
458
normpath = _posix_normpath
459
path_from_environ = _posix_path_from_environ
460
_get_home_dir = _posix_get_home_dir
461
getuser_unicode = _posix_getuser_unicode
410
462
getcwd = os.getcwdu
411
464
dirname = os.path.dirname
412
465
basename = os.path.basename
413
466
split = os.path.split
414
467
splitext = os.path.splitext
415
# These were already imported into local scope
468
# These were already lazily imported into local scope
416
469
# mkdtemp = tempfile.mkdtemp
417
470
# rmtree = shutil.rmtree
419
478
MIN_ABS_PATHLENGTH = 1
477
549
input_encoding = getattr(sys.stdin, 'encoding', None)
478
550
if not input_encoding:
479
551
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
553
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
556
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
558
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
562
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
563
if output_encoding == 'cp0':
488
564
# invalid encoding (cp0 means 'no codepage' on Windows)
489
565
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
567
mutter('cp0 is invalid encoding.'
491
568
' encoding stdout as osutils.get_user_encoding() %r',
882
959
"""Return size of given open file."""
883
return os.fstat(f.fileno())[ST_SIZE]
886
# Define rand_bytes based on platform.
888
# Python 2.4 and later have os.urandom,
889
# but it doesn't work on some arches
891
rand_bytes = os.urandom
892
except (NotImplementedError, AttributeError):
893
# If python doesn't have os.urandom, or it doesn't work,
894
# then try to first pull random data from /dev/urandom
960
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":
896
rand_bytes = file('/dev/urandom', 'rb').read
897
# Otherwise, use this hack as a last resort
898
except (IOError, OSError):
972
except NotImplementedError:
899
973
# not well seeded, but better than nothing
900
974
def rand_bytes(n):
1250
1322
# but for now, we haven't optimized...
1251
1323
return [canonical_relpath(base, p) for p in paths]
1326
def decode_filename(filename):
1327
"""Decode the filename using the filesystem encoding
1329
If it is unicode, it is returned.
1330
Otherwise it is decoded from the the filesystem's encoding. If decoding
1331
fails, a errors.BadFilenameEncoding exception is raised.
1333
if type(filename) is unicode:
1336
return filename.decode(_fs_enc)
1337
except UnicodeDecodeError:
1338
raise errors.BadFilenameEncoding(filename, _fs_enc)
1253
1341
def safe_unicode(unicode_or_utf8_string):
1254
1342
"""Coerce unicode_or_utf8_string into unicode.
1427
1521
- if BZR_COLUMNS is set, returns its value
1428
1522
- if there is no controlling terminal, returns None
1523
- query the OS, if the queried size has changed since the last query,
1429
1525
- if COLUMNS is set, returns its value,
1526
- if the OS has a value (even though it's never changed), return its value.
1431
1528
From there, we need to query the OS to get the size of the controlling
1531
On Unices we query the OS by:
1435
1532
- get termios.TIOCGWINSZ
1436
1533
- if an error occurs or a negative value is obtained, returns None
1535
On Windows we query the OS by:
1440
1536
- win32utils.get_console_size() decides,
1441
1537
- returns None on error (provided default value)
1539
# Note to implementors: if changing the rules for determining the width,
1540
# make sure you've considered the behaviour in these cases:
1541
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1542
# - bzr log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1544
# - (add more interesting cases here, if you find any)
1545
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1546
# but we don't want to register a signal handler because it is impossible
1547
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1548
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1549
# time so we can notice if the reported size has changed, which should have
1444
1552
# If BZR_COLUMNS is set, take it, user is always right
1553
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1555
width = int(os.environ['BZR_COLUMNS'])
1447
1556
except (KeyError, ValueError):
1558
if width is not None:
1450
1564
isatty = getattr(sys.stdout, 'isatty', None)
1451
if isatty is None or not isatty():
1565
if isatty is None or not isatty():
1452
1566
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
1455
# If COLUMNS is set, take it, the terminal knows better (even inside a
1456
# given terminal, the application can decide to set COLUMNS to a lower
1457
# value (splitted screen) or a bigger value (scroll bars))
1570
width, height = os_size = _terminal_size(None, None)
1571
global _first_terminal_size, _terminal_size_state
1572
if _terminal_size_state == 'no_data':
1573
_first_terminal_size = os_size
1574
_terminal_size_state = 'unchanged'
1575
elif (_terminal_size_state == 'unchanged' and
1576
_first_terminal_size != os_size):
1577
_terminal_size_state = 'changed'
1579
# If the OS claims to know how wide the terminal is, and this value has
1580
# ever changed, use that.
1581
if _terminal_size_state == 'changed':
1582
if width is not None and width > 0:
1585
# If COLUMNS is set, use it.
1459
1587
return int(os.environ['COLUMNS'])
1460
1588
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1591
# Finally, use an unchanged size from the OS, if we have one.
1592
if _terminal_size_state == 'unchanged':
1593
if width is not None and width > 0:
1596
# The width could not be determined.
1471
1600
def _win32_terminal_size(width, height):
1498
1627
_terminal_size = _ioctl_terminal_size
1501
def _terminal_size_changed(signum, frame):
1502
"""Set COLUMNS upon receiving a SIGnal for WINdow size CHange."""
1503
width, height = _terminal_size(None, None)
1504
if width is not None:
1505
os.environ['COLUMNS'] = str(width)
1508
_registered_sigwinch = False
1509
def watch_sigwinch():
1510
"""Register for SIGWINCH, once and only once.
1512
Do nothing if the signal module is not available.
1514
global _registered_sigwinch
1515
if not _registered_sigwinch:
1518
if getattr(signal, "SIGWINCH", None) is not None:
1519
set_signal_handler(signal.SIGWINCH, _terminal_size_changed)
1521
# python doesn't provide signal support, nothing we can do about it
1523
_registered_sigwinch = True
1526
1630
def supports_executable():
1527
1631
return sys.platform != "win32"
1886
1991
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
1994
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1890
1995
"""Find out what the preferred user encoding is.
1892
1997
This is generally the encoding that is used for command line parameters
1893
1998
and file contents. This may be different from the terminal encoding
1894
1999
or the filesystem encoding.
1896
:param use_cache: Enable cache for detected encoding.
1897
(This parameter is turned on by default,
1898
and required only for selftesting)
1900
2001
:return: A string defining the preferred user encoding
1902
2003
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
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:
1904
2008
return _cached_user_encoding
1906
if sys.platform == 'darwin':
1907
# python locale.getpreferredencoding() always return
1908
# 'mac-roman' on darwin. That's a lie.
1909
sys.platform = 'posix'
1911
if os.environ.get('LANG', None) is None:
1912
# If LANG is not set, we end up with 'ascii', which is bad
1913
# ('mac-roman' is more than ascii), so we set a default which
1914
# will give us UTF-8 (which appears to work in all cases on
1915
# OSX). Users are still free to override LANG of course, as
1916
# long as it give us something meaningful. This work-around
1917
# *may* not be needed with python 3k and/or OSX 10.5, but will
1918
# work with them too -- vila 20080908
1919
os.environ['LANG'] = 'en_US.UTF-8'
1922
sys.platform = 'darwin'
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)
2017
# GZ 2011-12-19: On windows could call GetACP directly instead.
2018
user_encoding = locale.getpreferredencoding(False)
1927
user_encoding = locale.getpreferredencoding()
1928
except locale.Error, e:
1929
sys.stderr.write('bzr: warning: %s\n'
1930
' Could not determine what text encoding to use.\n'
1931
' This error usually means your Python interpreter\n'
1932
' doesn\'t support the locale set by $LANG (%s)\n'
1933
" Continuing with ascii encoding.\n"
1934
% (e, os.environ.get('LANG')))
1935
user_encoding = 'ascii'
1937
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1938
# treat that as ASCII, and not support printing unicode characters to the
1941
# For python scripts run under vim, we get '', so also treat that as ASCII
1942
if user_encoding in (None, 'cp0', ''):
1943
user_encoding = 'ascii'
1947
codecs.lookup(user_encoding)
2021
user_encoding = codecs.lookup(user_encoding).name
2023
if user_encoding not in ("", "cp0"):
1949
2024
sys.stderr.write('bzr: warning:'
1950
2025
' unknown encoding %s.'
1951
2026
' Continuing with ascii encoding.\n'
1952
2027
% user_encoding
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = 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
1959
2041
return user_encoding
2044
def get_diff_header_encoding():
2045
return get_terminal_encoding()
1962
2048
def get_host_name():
1963
2049
"""Return the current unicode host name.
2051
2144
report_activity(sent, 'write')
2147
def connect_socket(address):
2148
# Slight variation of the socket.create_connection() function (provided by
2149
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2150
# provide it for previous python versions. Also, we don't use the timeout
2151
# parameter (provided by the python implementation) so we don't implement
2153
err = socket.error('getaddrinfo returns an empty list')
2154
host, port = address
2155
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2156
af, socktype, proto, canonname, sa = res
2159
sock = socket.socket(af, socktype, proto)
2163
except socket.error, err:
2164
# 'err' is now the most recent error
2165
if sock is not None:
2054
2170
def dereference_path(path):
2055
2171
"""Determine the real path to a file.
2114
2232
return file_kind_from_stat_mode(mode)
2115
2233
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2235
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2121
2239
except OSError, e:
2122
2240
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2241
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)
2127
2248
def until_no_eintr(f, *a, **kw):
2128
2249
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2251
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2252
if EINTR does occur. This is typically only true for low-level operations
2132
2253
like os.read. If in any doubt, don't use this.
2187
2309
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2312
if sys.platform.startswith('linux'):
2192
2313
def _local_concurrency():
2194
prefix = 'processor'
2195
for line in file('/proc/cpuinfo', 'rb'):
2196
if line.startswith(prefix):
2197
concurrency = int(line[line.find(':')+1:]) + 1
2315
return os.sysconf('SC_NPROCESSORS_ONLN')
2316
except (ValueError, OSError, AttributeError):
2199
2318
elif sys.platform == 'darwin':
2200
2319
def _local_concurrency():
2201
2320
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2321
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2322
elif "bsd" in sys.platform:
2204
2323
def _local_concurrency():
2205
2324
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2325
stdout=subprocess.PIPE).communicate()[0]
2234
2353
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2235
2354
if concurrency is None:
2237
concurrency = _local_concurrency()
2238
except (OSError, IOError):
2356
import multiprocessing
2357
concurrency = multiprocessing.cpu_count()
2358
except (ImportError, NotImplementedError):
2359
# multiprocessing is only available on Python >= 2.6
2360
# and multiprocessing.cpu_count() isn't implemented on all
2363
concurrency = _local_concurrency()
2364
except (OSError, IOError):
2241
2367
concurrency = int(concurrency)
2242
2368
except (TypeError, ValueError):
2302
2428
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2430
open_file = open
2433
def available_backup_name(base, exists):
2434
"""Find a non-existing backup file name.
2436
This will *not* create anything, this only return a 'free' entry. This
2437
should be used for checking names in a directory below a locked
2438
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2439
Leap) and generally discouraged.
2441
:param base: The base name.
2443
:param exists: A callable returning True if the path parameter exists.
2446
name = "%s.~%d~" % (base, counter)
2449
name = "%s.~%d~" % (base, counter)
2453
def set_fd_cloexec(fd):
2454
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2455
support for this is not available.
2459
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2460
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2461
except (ImportError, AttributeError):
2462
# Either the fcntl module or specific constants are not present
2466
def find_executable_on_path(name):
2467
"""Finds an executable on the PATH.
2469
On Windows, this will try to append each extension in the PATHEXT
2470
environment variable to the name, if it cannot be found with the name
2473
:param name: The base name of the executable.
2474
:return: The path to the executable found or None.
2476
if sys.platform == 'win32':
2477
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2478
exts = [ext.lower() for ext in exts]
2479
base, ext = os.path.splitext(name)
2481
if ext.lower() not in exts:
2487
path = os.environ.get('PATH')
2488
if path is not None:
2489
path = path.split(os.pathsep)
2492
f = os.path.join(d, name) + ext
2493
if os.access(f, os.X_OK):
2495
if sys.platform == 'win32':
2496
app_path = win32utils.get_app_path(name)
2497
if app_path != name:
2502
def _posix_is_local_pid_dead(pid):
2503
"""True if pid doesn't correspond to live process on this machine"""
2505
# Special meaning of unix kill: just check if it's there.
2508
if e.errno == errno.ESRCH:
2509
# On this machine, and really not found: as sure as we can be
2512
elif e.errno == errno.EPERM:
2513
# exists, though not ours
2516
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2517
# Don't really know.
2520
# Exists and our process: not dead.
2523
if sys.platform == "win32":
2524
is_local_pid_dead = win32utils.is_local_pid_dead
2526
is_local_pid_dead = _posix_is_local_pid_dead
2529
def fdatasync(fileno):
2530
"""Flush file contents to disk if possible.
2532
:param fileno: Integer OS file handle.
2533
:raises TransportNotPossible: If flushing to disk is not possible.
2535
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2540
def ensure_empty_directory_exists(path, exception_class):
2541
"""Make sure a local directory exists and is empty.
2543
If it does not exist, it is created. If it exists and is not empty, an
2544
instance of exception_class is raised.
2549
if e.errno != errno.EEXIST:
2551
if os.listdir(path) != []:
2552
raise exception_class(path)
2555
def is_environment_error(evalue):
2556
"""True if exception instance is due to a process environment issue
2558
This includes OSError and IOError, but also other errors that come from
2559
the operating system or core libraries but are not subclasses of those.
2561
if isinstance(evalue, (EnvironmentError, select.error)):
2563
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
added
removed
bzrlib/osutils.py
