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():
389
def _wrapped_rename(old, new):
390
"""Rename a file or directory"""
393
except (IOError, OSError), e:
394
# this is eventually called by all rename-like functions, so should
396
raise _add_rename_error_details(e, old, new)
399
449
def _mac_getcwd():
400
450
return unicodedata.normalize('NFC', os.getcwdu())
453
def _rename_wrap_exception(rename_func):
454
"""Adds extra information to any exceptions that come from rename().
456
The exception has an updated message and 'old_filename' and 'new_filename'
460
def _rename_wrapper(old, new):
462
rename_func(old, new)
464
detailed_error = OSError(e.errno, e.strerror +
465
" [occurred when renaming '%s' to '%s']" %
467
detailed_error.old_filename = old
468
detailed_error.new_filename = new
471
return _rename_wrapper
473
# Default rename wraps os.rename()
474
rename = _rename_wrap_exception(os.rename)
403
476
# Default is to just use the python builtins, but these can be rebound on
404
477
# particular platforms.
405
478
abspath = _posix_abspath
406
479
realpath = _posix_realpath
407
480
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
481
normpath = _posix_normpath
482
path_from_environ = _posix_path_from_environ
483
_get_home_dir = _posix_get_home_dir
484
getuser_unicode = _posix_getuser_unicode
410
485
getcwd = os.getcwdu
411
486
dirname = os.path.dirname
412
487
basename = os.path.basename
413
488
split = os.path.split
414
489
splitext = os.path.splitext
415
# These were already imported into local scope
490
# These were already lazily imported into local scope
416
491
# mkdtemp = tempfile.mkdtemp
417
492
# rmtree = shutil.rmtree
419
500
MIN_ABS_PATHLENGTH = 1
477
571
input_encoding = getattr(sys.stdin, 'encoding', None)
478
572
if not input_encoding:
479
573
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
575
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
578
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
580
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
584
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
585
if output_encoding == 'cp0':
488
586
# invalid encoding (cp0 means 'no codepage' on Windows)
489
587
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
589
mutter('cp0 is invalid encoding.'
491
590
' encoding stdout as osutils.get_user_encoding() %r',
882
981
"""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
982
return os.fstat(f.fileno())[stat.ST_SIZE]
985
# Alias os.urandom to support platforms (which?) without /dev/urandom and
986
# override if it doesn't work. Avoid checking on windows where there is
987
# significant initialisation cost that can be avoided for some bzr calls.
989
rand_bytes = os.urandom
991
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):
994
except NotImplementedError:
899
995
# not well seeded, but better than nothing
900
996
def rand_bytes(n):
1250
1344
# but for now, we haven't optimized...
1251
1345
return [canonical_relpath(base, p) for p in paths]
1348
def decode_filename(filename):
1349
"""Decode the filename using the filesystem encoding
1351
If it is unicode, it is returned.
1352
Otherwise it is decoded from the the filesystem's encoding. If decoding
1353
fails, a errors.BadFilenameEncoding exception is raised.
1355
if type(filename) is unicode:
1358
return filename.decode(_fs_enc)
1359
except UnicodeDecodeError:
1360
raise errors.BadFilenameEncoding(filename, _fs_enc)
1253
1363
def safe_unicode(unicode_or_utf8_string):
1254
1364
"""Coerce unicode_or_utf8_string into unicode.
1427
1543
- if BZR_COLUMNS is set, returns its value
1428
1544
- if there is no controlling terminal, returns None
1545
- query the OS, if the queried size has changed since the last query,
1429
1547
- if COLUMNS is set, returns its value,
1548
- if the OS has a value (even though it's never changed), return its value.
1431
1550
From there, we need to query the OS to get the size of the controlling
1553
On Unices we query the OS by:
1435
1554
- get termios.TIOCGWINSZ
1436
1555
- if an error occurs or a negative value is obtained, returns None
1557
On Windows we query the OS by:
1440
1558
- win32utils.get_console_size() decides,
1441
1559
- returns None on error (provided default value)
1561
# Note to implementors: if changing the rules for determining the width,
1562
# make sure you've considered the behaviour in these cases:
1563
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1564
# - bzr log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1566
# - (add more interesting cases here, if you find any)
1567
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1568
# but we don't want to register a signal handler because it is impossible
1569
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1570
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1571
# time so we can notice if the reported size has changed, which should have
1444
1574
# If BZR_COLUMNS is set, take it, user is always right
1575
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1577
width = int(os.environ['BZR_COLUMNS'])
1447
1578
except (KeyError, ValueError):
1580
if width is not None:
1450
1586
isatty = getattr(sys.stdout, 'isatty', None)
1451
if isatty is None or not isatty():
1587
if isatty is None or not isatty():
1452
1588
# 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))
1592
width, height = os_size = _terminal_size(None, None)
1593
global _first_terminal_size, _terminal_size_state
1594
if _terminal_size_state == 'no_data':
1595
_first_terminal_size = os_size
1596
_terminal_size_state = 'unchanged'
1597
elif (_terminal_size_state == 'unchanged' and
1598
_first_terminal_size != os_size):
1599
_terminal_size_state = 'changed'
1601
# If the OS claims to know how wide the terminal is, and this value has
1602
# ever changed, use that.
1603
if _terminal_size_state == 'changed':
1604
if width is not None and width > 0:
1607
# If COLUMNS is set, use it.
1459
1609
return int(os.environ['COLUMNS'])
1460
1610
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1613
# Finally, use an unchanged size from the OS, if we have one.
1614
if _terminal_size_state == 'unchanged':
1615
if width is not None and width > 0:
1618
# The width could not be determined.
1471
1622
def _win32_terminal_size(width, height):
1498
1649
_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
1652
def supports_executable():
1527
1653
return sys.platform != "win32"
1886
2013
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
2016
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1890
2017
"""Find out what the preferred user encoding is.
1892
2019
This is generally the encoding that is used for command line parameters
1893
2020
and file contents. This may be different from the terminal encoding
1894
2021
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
2023
:return: A string defining the preferred user encoding
1902
2025
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
2026
if deprecated_passed(use_cache):
2027
warn_deprecated("use_cache should only have been used for tests",
2028
DeprecationWarning, stacklevel=2)
2029
if _cached_user_encoding is not None:
1904
2030
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'
2032
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2033
# Use the existing locale settings and call nl_langinfo directly
2034
# rather than going through getpreferredencoding. This avoids
2035
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2036
# possibility of the setlocale call throwing an error.
2037
user_encoding = locale.nl_langinfo(locale.CODESET)
2039
# GZ 2011-12-19: On windows could call GetACP directly instead.
2040
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)
2043
user_encoding = codecs.lookup(user_encoding).name
2045
if user_encoding not in ("", "cp0"):
1949
2046
sys.stderr.write('bzr: warning:'
1950
2047
' unknown encoding %s.'
1951
2048
' Continuing with ascii encoding.\n'
1952
2049
% user_encoding
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = user_encoding
2051
user_encoding = 'ascii'
2053
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2054
if user_encoding == 'ascii':
2055
if sys.platform == 'darwin':
2056
# OSX is special-cased in Python to have a UTF-8 filesystem
2057
# encoding and previously had LANG set here if not present.
2058
user_encoding = 'utf-8'
2059
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2060
# for some other posix platforms as well.
2062
_cached_user_encoding = user_encoding
1959
2063
return user_encoding
2066
def get_diff_header_encoding():
2067
return get_terminal_encoding()
1962
2070
def get_host_name():
1963
2071
"""Return the current unicode host name.
2051
2166
report_activity(sent, 'write')
2169
def connect_socket(address):
2170
# Slight variation of the socket.create_connection() function (provided by
2171
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2172
# provide it for previous python versions. Also, we don't use the timeout
2173
# parameter (provided by the python implementation) so we don't implement
2175
err = socket.error('getaddrinfo returns an empty list')
2176
host, port = address
2177
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2178
af, socktype, proto, canonname, sa = res
2181
sock = socket.socket(af, socktype, proto)
2185
except socket.error, err:
2186
# 'err' is now the most recent error
2187
if sock is not None:
2054
2192
def dereference_path(path):
2055
2193
"""Determine the real path to a file.
2114
2254
return file_kind_from_stat_mode(mode)
2115
2255
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2257
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2121
2261
except OSError, e:
2122
2262
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2263
raise errors.NoSuchFile(f)
2266
def file_kind(f, _lstat=os.lstat):
2267
stat_value = file_stat(f, _lstat)
2268
return file_kind_from_stat_mode(stat_value.st_mode)
2127
2270
def until_no_eintr(f, *a, **kw):
2128
2271
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2273
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2274
if EINTR does occur. This is typically only true for low-level operations
2132
2275
like os.read. If in any doubt, don't use this.
2187
2331
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2334
if sys.platform.startswith('linux'):
2192
2335
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
2337
return os.sysconf('SC_NPROCESSORS_ONLN')
2338
except (ValueError, OSError, AttributeError):
2199
2340
elif sys.platform == 'darwin':
2200
2341
def _local_concurrency():
2201
2342
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2343
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2344
elif "bsd" in sys.platform:
2204
2345
def _local_concurrency():
2205
2346
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2347
stdout=subprocess.PIPE).communicate()[0]
2234
2375
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2235
2376
if concurrency is None:
2237
concurrency = _local_concurrency()
2238
except (OSError, IOError):
2378
import multiprocessing
2379
concurrency = multiprocessing.cpu_count()
2380
except (ImportError, NotImplementedError):
2381
# multiprocessing is only available on Python >= 2.6
2382
# and multiprocessing.cpu_count() isn't implemented on all
2385
concurrency = _local_concurrency()
2386
except (OSError, IOError):
2241
2389
concurrency = int(concurrency)
2242
2390
except (TypeError, ValueError):
2302
2450
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2452
open_file = open
2455
def available_backup_name(base, exists):
2456
"""Find a non-existing backup file name.
2458
This will *not* create anything, this only return a 'free' entry. This
2459
should be used for checking names in a directory below a locked
2460
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2461
Leap) and generally discouraged.
2463
:param base: The base name.
2465
:param exists: A callable returning True if the path parameter exists.
2468
name = "%s.~%d~" % (base, counter)
2471
name = "%s.~%d~" % (base, counter)
2475
def set_fd_cloexec(fd):
2476
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2477
support for this is not available.
2481
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2482
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2483
except (ImportError, AttributeError):
2484
# Either the fcntl module or specific constants are not present
2488
def find_executable_on_path(name):
2489
"""Finds an executable on the PATH.
2491
On Windows, this will try to append each extension in the PATHEXT
2492
environment variable to the name, if it cannot be found with the name
2495
:param name: The base name of the executable.
2496
:return: The path to the executable found or None.
2498
if sys.platform == 'win32':
2499
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2500
exts = [ext.lower() for ext in exts]
2501
base, ext = os.path.splitext(name)
2503
if ext.lower() not in exts:
2509
path = os.environ.get('PATH')
2510
if path is not None:
2511
path = path.split(os.pathsep)
2514
f = os.path.join(d, name) + ext
2515
if os.access(f, os.X_OK):
2517
if sys.platform == 'win32':
2518
app_path = win32utils.get_app_path(name)
2519
if app_path != name:
2524
def _posix_is_local_pid_dead(pid):
2525
"""True if pid doesn't correspond to live process on this machine"""
2527
# Special meaning of unix kill: just check if it's there.
2530
if e.errno == errno.ESRCH:
2531
# On this machine, and really not found: as sure as we can be
2534
elif e.errno == errno.EPERM:
2535
# exists, though not ours
2538
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2539
# Don't really know.
2542
# Exists and our process: not dead.
2545
if sys.platform == "win32":
2546
is_local_pid_dead = win32utils.is_local_pid_dead
2548
is_local_pid_dead = _posix_is_local_pid_dead
2551
def fdatasync(fileno):
2552
"""Flush file contents to disk if possible.
2554
:param fileno: Integer OS file handle.
2555
:raises TransportNotPossible: If flushing to disk is not possible.
2557
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2562
def ensure_empty_directory_exists(path, exception_class):
2563
"""Make sure a local directory exists and is empty.
2565
If it does not exist, it is created. If it exists and is not empty, an
2566
instance of exception_class is raised.
2571
if e.errno != errno.EEXIST:
2573
if os.listdir(path) != []:
2574
raise exception_class(path)
2577
def is_environment_error(evalue):
2578
"""True if exception instance is due to a process environment issue
2580
This includes OSError and IOError, but also other errors that come from
2581
the operating system or core libraries but are not subclasses of those.
2583
if isinstance(evalue, (EnvironmentError, select.error)):
2585
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
added
removed
bzrlib/osutils.py
