14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
from __future__ import absolute_import
20
from stat import S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE
25
from bzrlib.lazy_import import lazy_import
27
from .lazy_import import lazy_import
26
28
lazy_import(globals(), """
27
29
from datetime import datetime
30
from ntpath import (abspath as _nt_abspath,
32
normpath as _nt_normpath,
33
realpath as _nt_realpath,
34
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
44
from tempfile import (
44
from tempfile import mkdtemp
52
from breezy.i18n import gettext
57
from bzrlib.symbol_versioning import (
62
# sha and md5 modules are deprecated in python2.6 but hashlib is available as
64
if sys.version_info < (2, 5):
65
import md5 as _mod_md5
67
import sha as _mod_sha
77
from bzrlib import symbol_versioning
80
73
# Cross platform wall-clock time functionality with decent resolution.
97
90
O_NOINHERIT = getattr(os, 'O_NOINHERIT', 0)
93
class UnsupportedTimezoneFormat(errors.BzrError):
95
_fmt = ('Unsupported timezone format "%(timezone)s", '
96
'options are "utc", "original", "local".')
98
def __init__(self, timezone):
99
self.timezone = timezone
100
102
def get_unicode_argv():
102
106
user_encoding = get_user_encoding()
103
107
return [a.decode(user_encoding) for a in sys.argv[1:]]
104
108
except UnicodeDecodeError:
105
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
109
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
110
"application locale.").format(a, user_encoding))
109
113
def make_readonly(filename):
110
114
"""Make a filename read-only."""
111
115
mod = os.lstat(filename).st_mode
112
116
if not stat.S_ISLNK(mod):
114
os.chmod(filename, mod)
118
chmod_if_possible(filename, mod)
117
121
def make_writable(filename):
118
122
mod = os.lstat(filename).st_mode
119
123
if not stat.S_ISLNK(mod):
121
os.chmod(filename, mod)
125
chmod_if_possible(filename, mod)
128
def chmod_if_possible(filename, mode):
129
# Set file mode if that can be safely done.
130
# Sometimes even on unix the filesystem won't allow it - see
131
# https://bugs.launchpad.net/bzr/+bug/606537
133
# It is probably faster to just do the chmod, rather than
134
# doing a stat, and then trying to compare
135
os.chmod(filename, mode)
136
except (IOError, OSError) as e:
137
# Permission/access denied seems to commonly happen on smbfs; there's
138
# probably no point warning about it.
139
# <https://bugs.launchpad.net/bzr/+bug/606537>
140
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
141
trace.mutter("ignore error on chmod of %r: %r" % (
124
147
def minimum_path_selection(paths):
233
261
file_existed = False
235
263
rename_func(new, tmp_name)
236
except (errors.NoSuchFile,), e:
264
except (errors.NoSuchFile,):
239
267
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
240
268
# function raises an IOError with errno is None when a rename fails.
241
269
# This then gets caught here.
242
270
if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
272
except Exception as e:
245
273
if (getattr(e, 'errno', None) is None
246
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
274
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
249
277
file_existed = True
255
# This may throw an exception, in which case success will
257
rename_func(old, new)
259
except (IOError, OSError), e:
260
# source and target may be aliases of each other (e.g. on a
261
# case-insensitive filesystem), so we may have accidentally renamed
262
# source by when we tried to rename target
263
failure_exc = sys.exc_info()
264
if (file_existed and e.errno in (None, errno.ENOENT)
281
# This may throw an exception, in which case success will
283
rename_func(old, new)
285
except (IOError, OSError) as e:
286
# source and target may be aliases of each other (e.g. on a
287
# case-insensitive filesystem), so we may have accidentally renamed
288
# source by when we tried to rename target
289
if (file_existed and e.errno in (None, errno.ENOENT)
265
290
and old.lower() == new.lower()):
266
# source and target are the same file on a case-insensitive
267
# filesystem, so we don't generate an exception
291
# source and target are the same file on a case-insensitive
292
# filesystem, so we don't generate an exception
271
298
# If the file used to exist, rename it back into place
274
301
unlink_func(tmp_name)
276
303
rename_func(tmp_name, new)
277
if failure_exc is not None:
278
raise failure_exc[0], failure_exc[1], failure_exc[2]
281
306
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
282
307
# choke on a Unicode string containing a relative path if
283
308
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
285
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
286
310
def _posix_abspath(path):
287
311
# jam 20060426 rather than encoding to fsencoding
288
312
# copy posixpath.abspath, but use os.getcwdu instead
289
313
if not posixpath.isabs(path):
290
314
path = posixpath.join(getcwd(), path)
291
return posixpath.normpath(path)
315
return _posix_normpath(path)
294
318
def _posix_realpath(path):
295
319
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
322
def _posix_normpath(path):
323
path = posixpath.normpath(path)
324
# Bug 861008: posixpath.normpath() returns a path normalized according to
325
# the POSIX standard, which stipulates (for compatibility reasons) that two
326
# leading slashes must not be simplified to one, and only if there are 3 or
327
# more should they be simplified as one. So we treat the leading 2 slashes
328
# as a special case here by simply removing the first slash, as we consider
329
# that breaking POSIX compatibility for this obscure feature is acceptable.
330
# This is not a paranoid precaution, as we notably get paths like this when
331
# the repo is hosted at the root of the filesystem, i.e. in "/".
332
if path.startswith('//'):
337
def _posix_path_from_environ(key):
338
"""Get unicode path from `key` in environment or None if not present
340
Note that posix systems use arbitrary byte strings for filesystem objects,
341
so a path that raises BadFilenameEncoding here may still be accessible.
343
val = os.environ.get(key, None)
344
if PY3 or val is None:
347
return val.decode(_fs_enc)
348
except UnicodeDecodeError:
349
# GZ 2011-12-12:Ideally want to include `key` in the exception message
350
raise errors.BadFilenameEncoding(val, _fs_enc)
353
def _posix_get_home_dir():
354
"""Get the home directory of the current user as a unicode path"""
355
path = posixpath.expanduser("~")
357
return path.decode(_fs_enc)
358
except AttributeError:
360
except UnicodeDecodeError:
361
raise errors.BadFilenameEncoding(path, _fs_enc)
364
def _posix_getuser_unicode():
365
"""Get username from environment or password database as unicode"""
366
name = getpass.getuser()
369
user_encoding = get_user_encoding()
371
return name.decode(user_encoding)
372
except UnicodeDecodeError:
373
raise errors.BzrError("Encoding of username %r is unsupported by %s "
374
"application locale." % (name, user_encoding))
298
377
def _win32_fixdrive(path):
299
378
"""Force drive letters to be consistent.
304
383
running python.exe under cmd.exe return capital C:\\
305
384
running win32 python inside a cygwin shell returns lowercase c:\\
307
drive, path = _nt_splitdrive(path)
386
drive, path = ntpath.splitdrive(path)
308
387
return drive.upper() + path
311
390
def _win32_abspath(path):
312
# Real _nt_abspath doesn't have a problem with a unicode cwd
313
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
316
def _win98_abspath(path):
317
"""Return the absolute version of a path.
318
Windows 98 safe implementation (python reimplementation
319
of Win32 API function GetFullPathNameW)
324
# \\HOST\path => //HOST/path
325
# //HOST/path => //HOST/path
326
# path => C:/cwd/path
329
# check for absolute path
330
drive = _nt_splitdrive(path)[0]
331
if drive == '' and path[:2] not in('//','\\\\'):
333
# we cannot simply os.path.join cwd and path
334
# because os.path.join('C:','/path') produce '/path'
335
# and this is incorrect
336
if path[:1] in ('/','\\'):
337
cwd = _nt_splitdrive(cwd)[0]
339
path = cwd + '\\' + path
340
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
391
# Real ntpath.abspath doesn't have a problem with a unicode cwd
392
return _win32_fixdrive(ntpath.abspath(path).replace('\\', '/'))
343
395
def _win32_realpath(path):
344
# Real _nt_realpath doesn't have a problem with a unicode cwd
345
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
396
# Real ntpath.realpath doesn't have a problem with a unicode cwd
397
return _win32_fixdrive(ntpath.realpath(path).replace('\\', '/'))
348
400
def _win32_pathjoin(*args):
349
return _nt_join(*args).replace('\\', '/')
401
return ntpath.join(*args).replace('\\', '/')
352
404
def _win32_normpath(path):
353
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
405
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
356
408
def _win32_getcwd():
357
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
409
return _win32_fixdrive(_getcwd().replace('\\', '/'))
360
412
def _win32_mkdtemp(*args, **kwargs):
361
413
return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
364
def _add_rename_error_details(e, old, new):
365
new_e = OSError(e.errno, "failed to rename %s to %s: %s"
366
% (old, new, e.strerror))
368
new_e.to_filename = new
372
416
def _win32_rename(old, new):
373
417
"""We expect to be able to atomically replace 'new' with old.
390
def _wrapped_rename(old, new):
391
"""Rename a file or directory"""
394
except (IOError, OSError), e:
395
# this is eventually called by all rename-like functions, so should
397
raise _add_rename_error_details(e, old, new)
400
434
def _mac_getcwd():
401
return unicodedata.normalize('NFC', os.getcwdu())
435
return unicodedata.normalize('NFC', _getcwd())
438
def _rename_wrap_exception(rename_func):
439
"""Adds extra information to any exceptions that come from rename().
441
The exception has an updated message and 'old_filename' and 'new_filename'
445
def _rename_wrapper(old, new):
447
rename_func(old, new)
449
detailed_error = OSError(e.errno, e.strerror +
450
" [occurred when renaming '%s' to '%s']" %
452
detailed_error.old_filename = old
453
detailed_error.new_filename = new
456
return _rename_wrapper
459
if sys.version_info > (3,):
465
# Default rename wraps os.rename()
466
rename = _rename_wrap_exception(os.rename)
404
468
# Default is to just use the python builtins, but these can be rebound on
405
469
# particular platforms.
406
470
abspath = _posix_abspath
407
471
realpath = _posix_realpath
408
472
pathjoin = os.path.join
409
normpath = os.path.normpath
410
rename = _wrapped_rename # overridden below on win32
473
normpath = _posix_normpath
474
path_from_environ = _posix_path_from_environ
475
_get_home_dir = _posix_get_home_dir
476
getuser_unicode = _posix_getuser_unicode
412
478
dirname = os.path.dirname
413
479
basename = os.path.basename
414
480
split = os.path.split
415
481
splitext = os.path.splitext
416
# These were already imported into local scope
482
# These were already lazily imported into local scope
417
483
# mkdtemp = tempfile.mkdtemp
418
484
# rmtree = shutil.rmtree
420
493
MIN_ABS_PATHLENGTH = 1
423
496
if sys.platform == 'win32':
424
if win32utils.winver == 'Windows 98':
425
abspath = _win98_abspath
427
abspath = _win32_abspath
497
abspath = _win32_abspath
428
498
realpath = _win32_realpath
429
499
pathjoin = _win32_pathjoin
430
500
normpath = _win32_normpath
431
501
getcwd = _win32_getcwd
432
502
mkdtemp = _win32_mkdtemp
433
rename = _win32_rename
503
rename = _rename_wrap_exception(_win32_rename)
505
from . import _walkdirs_win32
509
lstat = _walkdirs_win32.lstat
510
fstat = _walkdirs_win32.fstat
511
wrap_stat = _walkdirs_win32.wrap_stat
435
513
MIN_ABS_PATHLENGTH = 3
472
553
On my standard US Windows XP, the preferred encoding is
473
554
cp1252, but the console is cp437
556
:param trace: If True trace the selected encoding via mutter().
475
from bzrlib.trace import mutter
558
from .trace import mutter
476
559
output_encoding = getattr(sys.stdout, 'encoding', None)
477
560
if not output_encoding:
478
561
input_encoding = getattr(sys.stdin, 'encoding', None)
479
562
if not input_encoding:
480
563
output_encoding = get_user_encoding()
481
mutter('encoding stdout as osutils.get_user_encoding() %r',
565
mutter('encoding stdout as osutils.get_user_encoding() %r',
484
568
output_encoding = input_encoding
485
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
570
mutter('encoding stdout as sys.stdin encoding %r',
487
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
574
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
488
575
if output_encoding == 'cp0':
489
576
# invalid encoding (cp0 means 'no codepage' on Windows)
490
577
output_encoding = get_user_encoding()
491
mutter('cp0 is invalid encoding.'
492
' encoding stdout as osutils.get_user_encoding() %r',
579
mutter('cp0 is invalid encoding.'
580
' encoding stdout as osutils.get_user_encoding() %r',
496
584
codecs.lookup(output_encoding)
497
585
except LookupError:
498
sys.stderr.write('bzr: warning:'
586
sys.stderr.write('brz: warning:'
499
587
' unknown terminal encoding %s.\n'
500
588
' Using encoding %s instead.\n'
501
589
% (output_encoding, get_user_encoding())
503
591
output_encoding = get_user_encoding()
505
593
return output_encoding
858
965
plural_seconds = ''
860
967
plural_seconds = 's'
861
if minutes < 90: # print minutes, seconds up to 90 minutes
968
if minutes < 90: # print minutes, seconds up to 90 minutes
863
970
return '%d minute, %d second%s %s' % (
864
minutes, seconds, plural_seconds, direction)
971
minutes, seconds, plural_seconds, direction)
866
973
return '%d minutes, %d second%s %s' % (
867
minutes, seconds, plural_seconds, direction)
974
minutes, seconds, plural_seconds, direction)
869
976
hours = int(minutes / 60)
870
977
minutes -= 60 * hours
879
986
return '%d hours, %d minute%s %s' % (hours, minutes,
880
987
plural_minutes, direction)
883
991
"""Return size of given open file."""
884
return os.fstat(f.fileno())[ST_SIZE]
887
# Define rand_bytes based on platform.
889
# Python 2.4 and later have os.urandom,
890
# but it doesn't work on some arches
892
rand_bytes = os.urandom
893
except (NotImplementedError, AttributeError):
894
# If python doesn't have os.urandom, or it doesn't work,
895
# then try to first pull random data from /dev/urandom
992
return os.fstat(f.fileno())[stat.ST_SIZE]
995
# Alias os.urandom to support platforms (which?) without /dev/urandom and
996
# override if it doesn't work. Avoid checking on windows where there is
997
# significant initialisation cost that can be avoided for some bzr calls.
999
rand_bytes = os.urandom
1001
if rand_bytes.__module__ != "nt":
897
rand_bytes = file('/dev/urandom', 'rb').read
898
# Otherwise, use this hack as a last resort
899
except (IOError, OSError):
1004
except NotImplementedError:
900
1005
# not well seeded, but better than nothing
901
1006
def rand_bytes(n):
918
1025
for raw_byte in rand_bytes(num):
919
s += ALNUM[ord(raw_byte) % 36]
1027
s += ALNUM[ord(raw_byte) % 36]
1029
s += ALNUM[raw_byte % 36]
923
## TODO: We could later have path objects that remember their list
924
## decomposition (might be too tricksy though.)
1033
# TODO: We could later have path objects that remember their list
1034
# decomposition (might be too tricksy though.)
926
1036
def splitpath(p):
927
1037
"""Turn string into list of parts."""
928
1038
# split on either delimiter because people might use either on
930
ps = re.split(r'[\\/]', p)
1040
if isinstance(p, bytes):
1041
ps = re.split(b'[\\\\/]', p)
1043
ps = re.split(r'[\\/]', p)
935
raise errors.BzrError("sorry, %r not allowed in path" % f)
936
elif (f == '.') or (f == ''):
1047
if f in ('..', b'..'):
1048
raise errors.BzrError(gettext("sorry, %r not allowed in path") % f)
1049
elif f in ('.', '', b'.', b''):
971
1084
implementation should be loaded instead::
974
>>> import bzrlib._fictional_extension_pyx
1087
>>> import breezy._fictional_extension_pyx
975
1088
>>> except ImportError, e:
976
>>> bzrlib.osutils.failed_to_load_extension(e)
977
>>> import bzrlib._fictional_extension_py
1089
>>> breezy.osutils.failed_to_load_extension(e)
1090
>>> import breezy._fictional_extension_py
979
1092
# NB: This docstring is just an example, not a doctest, because doctest
980
1093
# currently can't cope with the use of lazy imports in this namespace --
983
1096
# This currently doesn't report the failure at the time it occurs, because
984
1097
# they tend to happen very early in startup when we can't check config
985
1098
# files etc, and also we want to report all failures but not spam the user
986
1099
# with 10 warnings.
987
from bzrlib import trace
988
1100
exception_str = str(exception)
989
1101
if exception_str not in _extension_load_failures:
990
1102
trace.mutter("failed to load compiled extension: %s" % exception_str)
994
1106
def report_extension_load_failures():
995
1107
if not _extension_load_failures:
997
from bzrlib.config import GlobalConfig
998
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
1109
if config.GlobalConfig().suppress_warning('missing_extensions'):
1000
1111
# the warnings framework should by default show this only once
1001
from bzrlib.trace import warning
1112
from .trace import warning
1003
"bzr: warning: some compiled extensions could not be loaded; "
1004
"see <https://answers.launchpad.net/bzr/+faq/703>")
1114
"brz: warning: some compiled extensions could not be loaded; "
1115
"see ``brz help missing-extensions``")
1005
1116
# we no longer show the specific missing extensions here, because it makes
1006
1117
# the message too long and scary - see
1007
1118
# https://bugs.launchpad.net/bzr/+bug/430529
1011
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
1012
except ImportError, e:
1122
from ._chunks_to_lines_pyx import chunks_to_lines
1123
except ImportError as e:
1013
1124
failed_to_load_extension(e)
1014
from bzrlib._chunks_to_lines_py import chunks_to_lines
1125
from ._chunks_to_lines_py import chunks_to_lines
1017
1128
def split_lines(s):
1018
1129
"""Split s into lines, but without removing the newline characters."""
1019
1130
# Trivially convert a fulltext into a 'chunked' representation, and let
1020
1131
# chunks_to_lines do the heavy lifting.
1021
if isinstance(s, str):
1132
if isinstance(s, bytes):
1022
1133
# chunks_to_lines only supports 8-bit strings
1023
1134
return chunks_to_lines([s])
1050
1162
os.link(src, dest)
1051
except (OSError, IOError), e:
1163
except (OSError, IOError) as e:
1052
1164
if e.errno != errno.EXDEV:
1054
1166
shutil.copyfile(src, dest)
1057
1169
def delete_any(path):
1058
"""Delete a file, symlink or directory.
1170
"""Delete a file, symlink or directory.
1060
1172
Will delete even if readonly.
1063
_delete_file_or_dir(path)
1064
except (OSError, IOError), e:
1175
_delete_file_or_dir(path)
1176
except (OSError, IOError) as e:
1065
1177
if e.errno in (errno.EPERM, errno.EACCES):
1066
1178
# make writable and try again
1285
1415
return unicode_or_utf8_string.encode('utf-8')
1288
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
1289
' Revision id generators should be creating utf8'
1293
def safe_revision_id(unicode_or_utf8_string, warn=True):
1418
def safe_revision_id(unicode_or_utf8_string):
1294
1419
"""Revision ids should now be utf8, but at one point they were unicode.
1296
1421
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
1298
:param warn: Functions that are sanitizing user data can set warn=False
1299
1423
:return: None or a utf8 revision id.
1301
1425
if (unicode_or_utf8_string is None
1302
or unicode_or_utf8_string.__class__ == str):
1426
or unicode_or_utf8_string.__class__ == bytes):
1303
1427
return unicode_or_utf8_string
1305
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
1307
return cache_utf8.encode(unicode_or_utf8_string)
1310
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
1311
' generators should be creating utf8 file ids.')
1314
def safe_file_id(unicode_or_utf8_string, warn=True):
1428
raise TypeError('Unicode revision ids are no longer supported. '
1429
'Revision id generators should be creating utf8 revision '
1433
def safe_file_id(unicode_or_utf8_string):
1315
1434
"""File ids should now be utf8, but at one point they were unicode.
1317
1436
This is the same as safe_utf8, except it uses the cached encode functions
1359
1475
can be accessed by that path.
1362
return unicodedata.normalize('NFC', unicode(path)), True
1478
if isinstance(path, bytes):
1479
path = path.decode(sys.getfilesystemencoding())
1480
return unicodedata.normalize('NFC', path), True
1365
1483
def _inaccessible_normalized_filename(path):
1366
1484
__doc__ = _accessible_normalized_filename.__doc__
1368
normalized = unicodedata.normalize('NFC', unicode(path))
1486
if isinstance(path, bytes):
1487
path = path.decode(sys.getfilesystemencoding())
1488
normalized = unicodedata.normalize('NFC', path)
1369
1489
return normalized, normalized == path
1425
1552
None is returned if the width can't established precisely.
1428
- if BZR_COLUMNS is set, returns its value
1555
- if BRZ_COLUMNS is set, returns its value
1429
1556
- if there is no controlling terminal, returns None
1557
- query the OS, if the queried size has changed since the last query,
1430
1559
- if COLUMNS is set, returns its value,
1560
- if the OS has a value (even though it's never changed), return its value.
1432
1562
From there, we need to query the OS to get the size of the controlling
1565
On Unices we query the OS by:
1436
1566
- get termios.TIOCGWINSZ
1437
1567
- if an error occurs or a negative value is obtained, returns None
1569
On Windows we query the OS by:
1441
1570
- win32utils.get_console_size() decides,
1442
1571
- returns None on error (provided default value)
1573
# Note to implementors: if changing the rules for determining the width,
1574
# make sure you've considered the behaviour in these cases:
1575
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1576
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1578
# - (add more interesting cases here, if you find any)
1579
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1580
# but we don't want to register a signal handler because it is impossible
1581
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1582
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1583
# time so we can notice if the reported size has changed, which should have
1445
# If BZR_COLUMNS is set, take it, user is always right
1586
# If BRZ_COLUMNS is set, take it, user is always right
1587
# Except if they specified 0 in which case, impose no limit here
1447
return int(os.environ['BZR_COLUMNS'])
1589
width = int(os.environ['BRZ_COLUMNS'])
1448
1590
except (KeyError, ValueError):
1592
if width is not None:
1451
1598
isatty = getattr(sys.stdout, 'isatty', None)
1452
if isatty is None or not isatty():
1453
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
1599
if isatty is None or not isatty():
1600
# Don't guess, setting BRZ_COLUMNS is the recommended way to override.
1456
# If COLUMNS is set, take it, the terminal knows better (even inside a
1457
# given terminal, the application can decide to set COLUMNS to a lower
1458
# value (splitted screen) or a bigger value (scroll bars))
1604
width, height = os_size = _terminal_size(None, None)
1605
global _first_terminal_size, _terminal_size_state
1606
if _terminal_size_state == 'no_data':
1607
_first_terminal_size = os_size
1608
_terminal_size_state = 'unchanged'
1609
elif (_terminal_size_state == 'unchanged' and
1610
_first_terminal_size != os_size):
1611
_terminal_size_state = 'changed'
1613
# If the OS claims to know how wide the terminal is, and this value has
1614
# ever changed, use that.
1615
if _terminal_size_state == 'changed':
1616
if width is not None and width > 0:
1619
# If COLUMNS is set, use it.
1460
1621
return int(os.environ['COLUMNS'])
1461
1622
except (KeyError, ValueError):
1464
width, height = _terminal_size(None, None)
1466
# Consider invalid values as meaning no width
1625
# Finally, use an unchanged size from the OS, if we have one.
1626
if _terminal_size_state == 'unchanged':
1627
if width is not None and width > 0:
1630
# The width could not be determined.
1472
1634
def _win32_terminal_size(width, height):
1473
width, height = win32utils.get_console_size(defaultx=width, defaulty=height)
1635
width, height = win32utils.get_console_size(
1636
defaultx=width, defaulty=height)
1474
1637
return width, height
1477
1640
def _ioctl_terminal_size(width, height):
1479
import struct, fcntl, termios
1480
1645
s = struct.pack('HHHH', 0, 0, 0, 0)
1481
1646
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1482
1647
height, width = struct.unpack('HHHH', x)[0:2]
1499
1665
_terminal_size = _ioctl_terminal_size
1502
def _terminal_size_changed(signum, frame):
1503
"""Set COLUMNS upon receiving a SIGnal for WINdow size CHange."""
1504
width, height = _terminal_size(None, None)
1505
if width is not None:
1506
os.environ['COLUMNS'] = str(width)
1509
_registered_sigwinch = False
1510
def watch_sigwinch():
1511
"""Register for SIGWINCH, once and only once.
1513
Do nothing if the signal module is not available.
1515
global _registered_sigwinch
1516
if not _registered_sigwinch:
1519
if getattr(signal, "SIGWINCH", None) is not None:
1520
set_signal_handler(signal.SIGWINCH, _terminal_size_changed)
1522
# python doesn't provide signal support, nothing we can do about it
1524
_registered_sigwinch = True
1527
1668
def supports_executable():
1528
1669
return sys.platform != "win32"
1713
1855
global _selected_dir_reader
1714
1856
if _selected_dir_reader is None:
1715
fs_encoding = _fs_enc.upper()
1716
if sys.platform == "win32" and win32utils.winver == 'Windows NT':
1717
# Win98 doesn't have unicode apis like FindFirstFileW
1718
# TODO: We possibly could support Win98 by falling back to the
1719
# original FindFirstFile, and using TCHAR instead of WCHAR,
1720
# but that gets a bit tricky, and requires custom compiling
1857
if sys.platform == "win32":
1723
from bzrlib._walkdirs_win32 import Win32ReadDir
1859
from ._walkdirs_win32 import Win32ReadDir
1724
1860
_selected_dir_reader = Win32ReadDir()
1725
1861
except ImportError:
1727
elif fs_encoding in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1728
# ANSI_X3.4-1968 is a form of ASCII
1863
elif _fs_enc in ('utf-8', 'ascii'):
1730
from bzrlib._readdir_pyx import UTF8DirReader
1865
from ._readdir_pyx import UTF8DirReader
1731
1866
_selected_dir_reader = UTF8DirReader()
1732
except ImportError, e:
1867
except ImportError as e:
1733
1868
failed_to_load_extension(e)
1780
1915
See DirReader.read_dir for details.
1782
1917
_utf8_encode = self._utf8_encode
1919
def _fs_decode(s): return s.decode(_fs_enc)
1921
def _fs_encode(s): return s.encode(_fs_enc)
1783
1922
_lstat = os.lstat
1784
1923
_listdir = os.listdir
1785
1924
_kind_from_mode = file_kind_from_stat_mode
1788
relprefix = prefix + '/'
1927
relprefix = prefix + b'/'
1791
top_slash = top + u'/'
1930
top_slash = top + '/'
1794
1933
append = dirblock.append
1795
for name in sorted(_listdir(top)):
1934
for name_native in _listdir(top.encode('utf-8')):
1797
name_utf8 = _utf8_encode(name)[0]
1936
name = _fs_decode(name_native)
1798
1937
except UnicodeDecodeError:
1799
1938
raise errors.BadFilenameEncoding(
1800
_utf8_encode(relprefix)[0] + name, _fs_enc)
1939
relprefix + name_native, _fs_enc)
1940
name_utf8 = _utf8_encode(name)[0]
1801
1941
abspath = top_slash + name
1802
1942
statvalue = _lstat(abspath)
1803
1943
kind = _kind_from_mode(statvalue.st_mode)
1804
1944
append((relprefix + name_utf8, name_utf8, kind, statvalue, abspath))
1945
return sorted(dirblock)
1808
1948
def copy_tree(from_path, to_path, handlers={}):
1875
2018
This can be used to sort paths in the same way that walkdirs does.
1877
return (dirname(path) , path)
2020
return (dirname(path), path)
1880
2023
def compare_paths_prefix_order(path_a, path_b):
1881
2024
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1882
2025
key_a = path_prefix_key(path_a)
1883
2026
key_b = path_prefix_key(path_b)
1884
return cmp(key_a, key_b)
2027
return (key_a > key_b) - (key_a < key_b)
1887
2030
_cached_user_encoding = None
1890
def get_user_encoding(use_cache=True):
2033
def get_user_encoding():
1891
2034
"""Find out what the preferred user encoding is.
1893
2036
This is generally the encoding that is used for command line parameters
1894
2037
and file contents. This may be different from the terminal encoding
1895
2038
or the filesystem encoding.
1897
:param use_cache: Enable cache for detected encoding.
1898
(This parameter is turned on by default,
1899
and required only for selftesting)
1901
2040
:return: A string defining the preferred user encoding
1903
2042
global _cached_user_encoding
1904
if _cached_user_encoding is not None and use_cache:
2043
if _cached_user_encoding is not None:
1905
2044
return _cached_user_encoding
1907
if sys.platform == 'darwin':
1908
# python locale.getpreferredencoding() always return
1909
# 'mac-roman' on darwin. That's a lie.
1910
sys.platform = 'posix'
1912
if os.environ.get('LANG', None) is None:
1913
# If LANG is not set, we end up with 'ascii', which is bad
1914
# ('mac-roman' is more than ascii), so we set a default which
1915
# will give us UTF-8 (which appears to work in all cases on
1916
# OSX). Users are still free to override LANG of course, as
1917
# long as it give us something meaningful. This work-around
1918
# *may* not be needed with python 3k and/or OSX 10.5, but will
1919
# work with them too -- vila 20080908
1920
os.environ['LANG'] = 'en_US.UTF-8'
1923
sys.platform = 'darwin'
2046
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2047
# Use the existing locale settings and call nl_langinfo directly
2048
# rather than going through getpreferredencoding. This avoids
2049
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2050
# possibility of the setlocale call throwing an error.
2051
user_encoding = locale.nl_langinfo(locale.CODESET)
2053
# GZ 2011-12-19: On windows could call GetACP directly instead.
2054
user_encoding = locale.getpreferredencoding(False)
1928
user_encoding = locale.getpreferredencoding()
1929
except locale.Error, e:
1930
sys.stderr.write('bzr: warning: %s\n'
1931
' Could not determine what text encoding to use.\n'
1932
' This error usually means your Python interpreter\n'
1933
' doesn\'t support the locale set by $LANG (%s)\n'
1934
" Continuing with ascii encoding.\n"
1935
% (e, os.environ.get('LANG')))
1936
user_encoding = 'ascii'
1938
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1939
# treat that as ASCII, and not support printing unicode characters to the
1942
# For python scripts run under vim, we get '', so also treat that as ASCII
1943
if user_encoding in (None, 'cp0', ''):
1944
user_encoding = 'ascii'
1948
codecs.lookup(user_encoding)
1950
sys.stderr.write('bzr: warning:'
2057
user_encoding = codecs.lookup(user_encoding).name
2059
if user_encoding not in ("", "cp0"):
2060
sys.stderr.write('brz: warning:'
1951
2061
' unknown encoding %s.'
1952
2062
' Continuing with ascii encoding.\n'
1953
2063
% user_encoding
1955
user_encoding = 'ascii'
1958
_cached_user_encoding = user_encoding
2065
user_encoding = 'ascii'
2067
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2068
if user_encoding == 'ascii':
2069
if sys.platform == 'darwin':
2070
# OSX is special-cased in Python to have a UTF-8 filesystem
2071
# encoding and previously had LANG set here if not present.
2072
user_encoding = 'utf-8'
2073
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2074
# for some other posix platforms as well.
2076
_cached_user_encoding = user_encoding
1960
2077
return user_encoding
2080
def get_diff_header_encoding():
2081
return get_terminal_encoding()
1963
2084
def get_host_name():
1964
2085
"""Return the current unicode host name.
1980
2102
# data at once.
1981
2103
MAX_SOCKET_CHUNK = 64 * 1024
2105
_end_of_stream_errors = [errno.ECONNRESET, errno.EPIPE, errno.EINVAL]
2106
for _eno in ['WSAECONNRESET', 'WSAECONNABORTED']:
2107
_eno = getattr(errno, _eno, None)
2108
if _eno is not None:
2109
_end_of_stream_errors.append(_eno)
1983
2113
def read_bytes_from_socket(sock, report_activity=None,
1984
max_read_size=MAX_SOCKET_CHUNK):
2114
max_read_size=MAX_SOCKET_CHUNK):
1985
2115
"""Read up to max_read_size of bytes from sock and notify of progress.
1987
2117
Translates "Connection reset by peer" into file-like EOF (return an
1988
2118
empty string rather than raise an error), and repeats the recv if
1989
2119
interrupted by a signal.
1993
bytes = sock.recv(max_read_size)
1994
except socket.error, e:
2123
data = sock.recv(max_read_size)
2124
except socket.error as e:
1995
2125
eno = e.args[0]
1996
if eno == getattr(errno, "WSAECONNRESET", errno.ECONNRESET):
2126
if eno in _end_of_stream_errors:
1997
2127
# The connection was closed by the other side. Callers expect
1998
2128
# an empty string to signal end-of-stream.
2000
2130
elif eno == errno.EINTR:
2001
2131
# Retry the interrupted recv.
2005
2135
if report_activity is not None:
2006
report_activity(len(bytes), 'read')
2136
report_activity(len(data), 'read')
2010
2140
def recv_all(socket, count):
2018
2148
This isn't optimized and is intended mostly for use in testing.
2021
2151
while len(b) < count:
2022
2152
new = read_bytes_from_socket(socket, None, count - len(b))
2029
2159
def send_all(sock, bytes, report_activity=None):
2030
2160
"""Send all bytes on a socket.
2032
2162
Breaks large blocks in smaller chunks to avoid buffering limitations on
2033
2163
some platforms, and catches EINTR which may be thrown if the send is
2034
2164
interrupted by a signal.
2036
2166
This is preferred to socket.sendall(), because it avoids portability bugs
2037
2167
and provides activity reporting.
2039
2169
:param report_activity: Call this as bytes are read, see
2040
2170
Transport._report_activity
2043
2173
byte_count = len(bytes)
2174
view = memoryview(bytes)
2044
2175
while sent_total < byte_count:
2046
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2047
except socket.error, e:
2177
sent = sock.send(view[sent_total:sent_total + MAX_SOCKET_CHUNK])
2178
except (socket.error, IOError) as e:
2179
if e.args[0] in _end_of_stream_errors:
2180
raise errors.ConnectionReset(
2181
"Error trying to write to socket", e)
2048
2182
if e.args[0] != errno.EINTR:
2186
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2051
2188
sent_total += sent
2052
report_activity(sent, 'write')
2189
if report_activity is not None:
2190
report_activity(sent, 'write')
2193
def connect_socket(address):
2194
# Slight variation of the socket.create_connection() function (provided by
2195
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2196
# provide it for previous python versions. Also, we don't use the timeout
2197
# parameter (provided by the python implementation) so we don't implement
2199
err = socket.error('getaddrinfo returns an empty list')
2200
host, port = address
2201
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2202
af, socktype, proto, canonname, sa = res
2205
sock = socket.socket(af, socktype, proto)
2209
except socket.error as e:
2211
# 'err' is now the most recent error
2212
if sock is not None:
2055
2217
def dereference_path(path):
2083
2245
If and when pkg_resources becomes a standard library, this routine
2084
2246
can delegate to it.
2086
# Check package name is within bzrlib
2087
if package == "bzrlib":
2248
# Check package name is within breezy
2249
if package == "breezy":
2088
2250
resource_relpath = resource_name
2089
elif package.startswith("bzrlib."):
2090
package = package[len("bzrlib."):].replace('.', os.sep)
2251
elif package.startswith("breezy."):
2252
package = package[len("breezy."):].replace('.', os.sep)
2091
2253
resource_relpath = pathjoin(package, resource_name)
2093
raise errors.BzrError('resource package %s not in bzrlib' % package)
2255
raise errors.BzrError('resource package %s not in breezy' % package)
2095
2257
# Map the resource to a file and read its contents
2096
base = dirname(bzrlib.__file__)
2258
base = dirname(breezy.__file__)
2097
2259
if getattr(sys, 'frozen', None): # bzr.exe
2098
2260
base = abspath(pathjoin(base, '..', '..'))
2099
filename = pathjoin(base, resource_relpath)
2100
return open(filename, 'rU').read()
2261
with open(pathjoin(base, resource_relpath), "rt") as f:
2103
2265
def file_kind_from_stat_mode_thunk(mode):
2104
2266
global file_kind_from_stat_mode
2105
2267
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2107
from bzrlib._readdir_pyx import UTF8DirReader
2269
from ._readdir_pyx import UTF8DirReader
2108
2270
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2109
except ImportError, e:
2110
2272
# This is one time where we won't warn that an extension failed to
2111
2273
# load. The extension is never available on Windows anyway.
2112
from bzrlib._readdir_py import (
2274
from ._readdir_py import (
2113
2275
_kind_from_mode as file_kind_from_stat_mode
2115
2277
return file_kind_from_stat_mode(mode)
2116
2280
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2119
def file_kind(f, _lstat=os.lstat):
2283
def file_stat(f, _lstat=os.lstat):
2121
return file_kind_from_stat_mode(_lstat(f).st_mode)
2287
except OSError as e:
2123
2288
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2124
2289
raise errors.NoSuchFile(f)
2293
def file_kind(f, _lstat=os.lstat):
2294
stat_value = file_stat(f, _lstat)
2295
return file_kind_from_stat_mode(stat_value.st_mode)
2128
2298
def until_no_eintr(f, *a, **kw):
2129
2299
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2131
2301
WARNING: you must be certain that it is safe to retry the call repeatedly
2132
2302
if EINTR does occur. This is typically only true for low-level operations
2133
2303
like os.read. If in any doubt, don't use this.
2135
2305
Keep in mind that this is not a complete solution to EINTR. There is
2136
2306
probably code in the Python standard library and other dependencies that
2137
2307
may encounter EINTR if a signal arrives (and there is signal handler for
2138
that signal). So this function can reduce the impact for IO that bzrlib
2308
that signal). So this function can reduce the impact for IO that breezy
2139
2309
directly controls, but it is not a complete solution.
2141
2311
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2144
2314
return f(*a, **kw)
2145
except (IOError, OSError), e:
2315
except (IOError, OSError) as e:
2146
2316
if e.errno == errno.EINTR:
2151
def re_compile_checked(re_string, flags=0, where=""):
2152
"""Return a compiled re, or raise a sensible error.
2154
This should only be used when compiling user-supplied REs.
2156
:param re_string: Text form of regular expression.
2157
:param flags: eg re.IGNORECASE
2158
:param where: Message explaining to the user the context where
2159
it occurred, eg 'log search filter'.
2161
# from https://bugs.launchpad.net/bzr/+bug/251352
2163
re_obj = re.compile(re_string, flags)
2168
where = ' in ' + where
2169
# despite the name 'error' is a type
2170
raise errors.BzrCommandError('Invalid regular expression%s: %r: %s'
2171
% (where, re_string, e))
2174
2321
if sys.platform == "win32":
2177
2324
return msvcrt.getch()
2182
2329
fd = sys.stdin.fileno()
2183
2330
settings = termios.tcgetattr(fd)
2188
2335
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2192
if sys.platform == 'linux2':
2338
if sys.platform.startswith('linux'):
2193
2339
def _local_concurrency():
2195
prefix = 'processor'
2196
for line in file('/proc/cpuinfo', 'rb'):
2197
if line.startswith(prefix):
2198
concurrency = int(line[line.find(':')+1:]) + 1
2341
return os.sysconf('SC_NPROCESSORS_ONLN')
2342
except (ValueError, OSError, AttributeError):
2200
2344
elif sys.platform == 'darwin':
2201
2345
def _local_concurrency():
2202
2346
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2203
2347
stdout=subprocess.PIPE).communicate()[0]
2204
elif sys.platform[0:7] == 'freebsd':
2348
elif "bsd" in sys.platform:
2205
2349
def _local_concurrency():
2206
2350
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2207
2351
stdout=subprocess.PIPE).communicate()[0]
2208
2352
elif sys.platform == 'sunos5':
2209
2353
def _local_concurrency():
2210
return subprocess.Popen(['psrinfo', '-p',],
2354
return subprocess.Popen(['psrinfo', '-p', ],
2211
2355
stdout=subprocess.PIPE).communicate()[0]
2212
2356
elif sys.platform == "win32":
2213
2357
def _local_concurrency():
2232
2377
if _cached_local_concurrency is not None and use_cache:
2233
2378
return _cached_local_concurrency
2235
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2380
concurrency = os.environ.get('BRZ_CONCURRENCY', None)
2236
2381
if concurrency is None:
2382
import multiprocessing
2238
concurrency = _local_concurrency()
2239
except (OSError, IOError):
2384
concurrency = multiprocessing.cpu_count()
2385
except NotImplementedError:
2386
# multiprocessing.cpu_count() isn't implemented on all platforms
2388
concurrency = _local_concurrency()
2389
except (OSError, IOError):
2242
2392
concurrency = int(concurrency)
2243
2393
except (TypeError, ValueError):
2244
2394
concurrency = 1
2246
_cached_concurrency = concurrency
2396
_cached_local_concurrency = concurrency
2247
2397
return concurrency
2305
2456
open_file = open
2308
def getuser_unicode():
2309
"""Return the username as unicode.
2312
user_encoding = get_user_encoding()
2313
username = getpass.getuser().decode(user_encoding)
2314
except UnicodeDecodeError:
2315
raise errors.BzrError("Can't decode username as %s." % \
2459
def available_backup_name(base, exists):
2460
"""Find a non-existing backup file name.
2462
This will *not* create anything, this only return a 'free' entry. This
2463
should be used for checking names in a directory below a locked
2464
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2465
Leap) and generally discouraged.
2467
:param base: The base name.
2469
:param exists: A callable returning True if the path parameter exists.
2472
name = "%s.~%d~" % (base, counter)
2475
name = "%s.~%d~" % (base, counter)
2479
def set_fd_cloexec(fd):
2480
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2481
support for this is not available.
2485
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2486
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2487
except (ImportError, AttributeError):
2488
# Either the fcntl module or specific constants are not present
2492
def find_executable_on_path(name):
2493
"""Finds an executable on the PATH.
2495
On Windows, this will try to append each extension in the PATHEXT
2496
environment variable to the name, if it cannot be found with the name
2499
:param name: The base name of the executable.
2500
:return: The path to the executable found or None.
2502
if sys.platform == 'win32':
2503
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2504
exts = [ext.lower() for ext in exts]
2505
base, ext = os.path.splitext(name)
2507
if ext.lower() not in exts:
2513
path = os.environ.get('PATH')
2514
if path is not None:
2515
path = path.split(os.pathsep)
2518
f = os.path.join(d, name) + ext
2519
if os.access(f, os.X_OK):
2521
if sys.platform == 'win32':
2522
app_path = win32utils.get_app_path(name)
2523
if app_path != name:
2528
def _posix_is_local_pid_dead(pid):
2529
"""True if pid doesn't correspond to live process on this machine"""
2531
# Special meaning of unix kill: just check if it's there.
2533
except OSError as e:
2534
if e.errno == errno.ESRCH:
2535
# On this machine, and really not found: as sure as we can be
2538
elif e.errno == errno.EPERM:
2539
# exists, though not ours
2542
trace.mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2543
# Don't really know.
2546
# Exists and our process: not dead.
2550
if sys.platform == "win32":
2551
is_local_pid_dead = win32utils.is_local_pid_dead
2553
is_local_pid_dead = _posix_is_local_pid_dead
2555
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2556
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2557
if getattr(errno, name, None) is not None]
2560
def fdatasync(fileno):
2561
"""Flush file contents to disk if possible.
2563
:param fileno: Integer OS file handle.
2564
:raises TransportNotPossible: If flushing to disk is not possible.
2566
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2570
except IOError as e:
2571
# See bug #1075108, on some platforms fdatasync exists, but can
2572
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2573
# and reduce the chance of corruption-on-powerloss situations. It
2574
# is not a mandatory call, so it is ok to suppress failures.
2575
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2576
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2580
def ensure_empty_directory_exists(path, exception_class):
2581
"""Make sure a local directory exists and is empty.
2583
If it does not exist, it is created. If it exists and is not empty, an
2584
instance of exception_class is raised.
2588
except OSError as e:
2589
if e.errno != errno.EEXIST:
2591
if os.listdir(path) != []:
2592
raise exception_class(path)
2595
def is_environment_error(evalue):
2596
"""True if exception instance is due to a process environment issue
2598
This includes OSError and IOError, but also other errors that come from
2599
the operating system or core libraries but are not subclasses of those.
2601
if isinstance(evalue, (EnvironmentError, select.error)):
2603
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):