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
29
from ntpath import (abspath as _nt_abspath,
31
normpath as _nt_normpath,
32
realpath as _nt_realpath,
33
splitdrive as _nt_splitdrive,
30
from datetime import timedelta
36
# We need to import both shutil and rmtree as we export the later on posix
37
# and need the former on windows
39
from shutil import rmtree
42
# We need to import both tempfile and mkdtemp as we export the later on posix
43
# and need the former on windows
43
from tempfile import (
45
from tempfile import mkdtemp
53
from breezy.i18n import gettext
56
from bzrlib.symbol_versioning import (
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
79
74
# Cross platform wall-clock time functionality with decent resolution.
96
91
O_NOINHERIT = getattr(os, 'O_NOINHERIT', 0)
94
class UnsupportedTimezoneFormat(errors.BzrError):
96
_fmt = ('Unsupported timezone format "%(timezone)s", '
97
'options are "utc", "original", "local".')
99
def __init__(self, timezone):
100
self.timezone = timezone
99
103
def get_unicode_argv():
101
107
user_encoding = get_user_encoding()
102
108
return [a.decode(user_encoding) for a in sys.argv[1:]]
103
109
except UnicodeDecodeError:
104
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
110
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
111
"application locale.").format(a, user_encoding))
108
114
def make_readonly(filename):
109
115
"""Make a filename read-only."""
110
116
mod = os.lstat(filename).st_mode
111
117
if not stat.S_ISLNK(mod):
113
os.chmod(filename, mod)
119
chmod_if_possible(filename, mod)
116
122
def make_writable(filename):
117
123
mod = os.lstat(filename).st_mode
118
124
if not stat.S_ISLNK(mod):
120
os.chmod(filename, mod)
126
chmod_if_possible(filename, mod)
129
def chmod_if_possible(filename, mode):
130
# Set file mode if that can be safely done.
131
# Sometimes even on unix the filesystem won't allow it - see
132
# https://bugs.launchpad.net/bzr/+bug/606537
134
# It is probably faster to just do the chmod, rather than
135
# doing a stat, and then trying to compare
136
os.chmod(filename, mode)
137
except (IOError, OSError) as e:
138
# Permission/access denied seems to commonly happen on smbfs; there's
139
# probably no point warning about it.
140
# <https://bugs.launchpad.net/bzr/+bug/606537>
141
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
142
trace.mutter("ignore error on chmod of %r: %r" % (
123
148
def minimum_path_selection(paths):
232
257
file_existed = False
234
259
rename_func(new, tmp_name)
235
except (errors.NoSuchFile,), e:
260
except (errors.NoSuchFile,) as e:
238
263
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
239
264
# function raises an IOError with errno is None when a rename fails.
240
265
# This then gets caught here.
241
266
if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
268
except Exception as e:
244
269
if (getattr(e, 'errno', None) is None
245
270
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
248
273
file_existed = True
254
# This may throw an exception, in which case success will
256
rename_func(old, new)
258
except (IOError, OSError), e:
259
# source and target may be aliases of each other (e.g. on a
260
# case-insensitive filesystem), so we may have accidentally renamed
261
# source by when we tried to rename target
262
failure_exc = sys.exc_info()
263
if (file_existed and e.errno in (None, errno.ENOENT)
264
and old.lower() == new.lower()):
265
# source and target are the same file on a case-insensitive
266
# filesystem, so we don't generate an exception
277
# This may throw an exception, in which case success will
279
rename_func(old, new)
281
except (IOError, OSError) as e:
282
# source and target may be aliases of each other (e.g. on a
283
# case-insensitive filesystem), so we may have accidentally renamed
284
# source by when we tried to rename target
285
if (file_existed and e.errno in (None, errno.ENOENT)
286
and old.lower() == new.lower()):
287
# source and target are the same file on a case-insensitive
288
# filesystem, so we don't generate an exception
270
294
# If the file used to exist, rename it back into place
273
297
unlink_func(tmp_name)
275
299
rename_func(tmp_name, new)
276
if failure_exc is not None:
277
raise failure_exc[0], failure_exc[1], failure_exc[2]
280
302
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
281
303
# choke on a Unicode string containing a relative path if
282
304
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
284
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
285
306
def _posix_abspath(path):
286
307
# jam 20060426 rather than encoding to fsencoding
287
308
# copy posixpath.abspath, but use os.getcwdu instead
288
309
if not posixpath.isabs(path):
289
310
path = posixpath.join(getcwd(), path)
290
return posixpath.normpath(path)
311
return _posix_normpath(path)
293
314
def _posix_realpath(path):
294
315
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
318
def _posix_normpath(path):
319
path = posixpath.normpath(path)
320
# Bug 861008: posixpath.normpath() returns a path normalized according to
321
# the POSIX standard, which stipulates (for compatibility reasons) that two
322
# leading slashes must not be simplified to one, and only if there are 3 or
323
# more should they be simplified as one. So we treat the leading 2 slashes
324
# as a special case here by simply removing the first slash, as we consider
325
# that breaking POSIX compatibility for this obscure feature is acceptable.
326
# This is not a paranoid precaution, as we notably get paths like this when
327
# the repo is hosted at the root of the filesystem, i.e. in "/".
328
if path.startswith('//'):
333
def _posix_path_from_environ(key):
334
"""Get unicode path from `key` in environment or None if not present
336
Note that posix systems use arbitrary byte strings for filesystem objects,
337
so a path that raises BadFilenameEncoding here may still be accessible.
339
val = os.environ.get(key, None)
340
if PY3 or val is None:
343
return val.decode(_fs_enc)
344
except UnicodeDecodeError:
345
# GZ 2011-12-12:Ideally want to include `key` in the exception message
346
raise errors.BadFilenameEncoding(val, _fs_enc)
349
def _posix_get_home_dir():
350
"""Get the home directory of the current user as a unicode path"""
351
path = posixpath.expanduser("~")
353
return path.decode(_fs_enc)
354
except AttributeError:
356
except UnicodeDecodeError:
357
raise errors.BadFilenameEncoding(path, _fs_enc)
360
def _posix_getuser_unicode():
361
"""Get username from environment or password database as unicode"""
362
name = getpass.getuser()
365
user_encoding = get_user_encoding()
367
return name.decode(user_encoding)
368
except UnicodeDecodeError:
369
raise errors.BzrError("Encoding of username %r is unsupported by %s "
370
"application locale." % (name, user_encoding))
297
373
def _win32_fixdrive(path):
298
374
"""Force drive letters to be consistent.
303
379
running python.exe under cmd.exe return capital C:\\
304
380
running win32 python inside a cygwin shell returns lowercase c:\\
306
drive, path = _nt_splitdrive(path)
382
drive, path = ntpath.splitdrive(path)
307
383
return drive.upper() + path
310
386
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('\\', '/'))
315
def _win98_abspath(path):
316
"""Return the absolute version of a path.
317
Windows 98 safe implementation (python reimplementation
318
of Win32 API function GetFullPathNameW)
323
# \\HOST\path => //HOST/path
324
# //HOST/path => //HOST/path
325
# path => C:/cwd/path
328
# check for absolute path
329
drive = _nt_splitdrive(path)[0]
330
if drive == '' and path[:2] not in('//','\\\\'):
332
# we cannot simply os.path.join cwd and path
333
# because os.path.join('C:','/path') produce '/path'
334
# and this is incorrect
335
if path[:1] in ('/','\\'):
336
cwd = _nt_splitdrive(cwd)[0]
338
path = cwd + '\\' + path
339
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
387
# Real ntpath.abspath doesn't have a problem with a unicode cwd
388
return _win32_fixdrive(ntpath.abspath(unicode(path)).replace('\\', '/'))
342
391
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('\\', '/'))
392
# Real ntpath.realpath doesn't have a problem with a unicode cwd
393
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
347
396
def _win32_pathjoin(*args):
348
return _nt_join(*args).replace('\\', '/')
397
return ntpath.join(*args).replace('\\', '/')
351
400
def _win32_normpath(path):
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
401
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
355
404
def _win32_getcwd():
356
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
405
return _win32_fixdrive(_getcwd().replace('\\', '/'))
359
408
def _win32_mkdtemp(*args, **kwargs):
360
409
return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
363
def _add_rename_error_details(e, old, new):
364
new_e = OSError(e.errno, "failed to rename %s to %s: %s"
365
% (old, new, e.strerror))
367
new_e.to_filename = new
371
412
def _win32_rename(old, new):
372
413
"""We expect to be able to atomically replace 'new' with old.
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
430
def _mac_getcwd():
400
return unicodedata.normalize('NFC', os.getcwdu())
431
return unicodedata.normalize('NFC', _getcwd())
434
def _rename_wrap_exception(rename_func):
435
"""Adds extra information to any exceptions that come from rename().
437
The exception has an updated message and 'old_filename' and 'new_filename'
441
def _rename_wrapper(old, new):
443
rename_func(old, new)
445
detailed_error = OSError(e.errno, e.strerror +
446
" [occurred when renaming '%s' to '%s']" %
448
detailed_error.old_filename = old
449
detailed_error.new_filename = new
452
return _rename_wrapper
455
if sys.version_info > (3,):
461
# Default rename wraps os.rename()
462
rename = _rename_wrap_exception(os.rename)
403
464
# Default is to just use the python builtins, but these can be rebound on
404
465
# particular platforms.
405
466
abspath = _posix_abspath
406
467
realpath = _posix_realpath
407
468
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
469
normpath = _posix_normpath
470
path_from_environ = _posix_path_from_environ
471
_get_home_dir = _posix_get_home_dir
472
getuser_unicode = _posix_getuser_unicode
411
474
dirname = os.path.dirname
412
475
basename = os.path.basename
413
476
split = os.path.split
414
477
splitext = os.path.splitext
415
# These were already imported into local scope
478
# These were already lazily imported into local scope
416
479
# mkdtemp = tempfile.mkdtemp
417
480
# rmtree = shutil.rmtree
419
488
MIN_ABS_PATHLENGTH = 1
422
491
if sys.platform == 'win32':
423
if win32utils.winver == 'Windows 98':
424
abspath = _win98_abspath
426
abspath = _win32_abspath
492
abspath = _win32_abspath
427
493
realpath = _win32_realpath
428
494
pathjoin = _win32_pathjoin
429
495
normpath = _win32_normpath
430
496
getcwd = _win32_getcwd
431
497
mkdtemp = _win32_mkdtemp
432
rename = _win32_rename
498
rename = _rename_wrap_exception(_win32_rename)
500
from . import _walkdirs_win32
504
lstat = _walkdirs_win32.lstat
505
fstat = _walkdirs_win32.fstat
506
wrap_stat = _walkdirs_win32.wrap_stat
434
508
MIN_ABS_PATHLENGTH = 3
471
548
On my standard US Windows XP, the preferred encoding is
472
549
cp1252, but the console is cp437
551
:param trace: If True trace the selected encoding via mutter().
474
from bzrlib.trace import mutter
553
from .trace import mutter
475
554
output_encoding = getattr(sys.stdout, 'encoding', None)
476
555
if not output_encoding:
477
556
input_encoding = getattr(sys.stdin, 'encoding', None)
478
557
if not input_encoding:
479
558
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
560
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
563
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
565
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
569
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
570
if output_encoding == 'cp0':
488
571
# invalid encoding (cp0 means 'no codepage' on Windows)
489
572
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
574
mutter('cp0 is invalid encoding.'
491
575
' encoding stdout as osutils.get_user_encoding() %r',
495
579
codecs.lookup(output_encoding)
496
580
except LookupError:
497
sys.stderr.write('bzr: warning:'
581
sys.stderr.write('brz: warning:'
498
582
' unknown terminal encoding %s.\n'
499
583
' Using encoding %s instead.\n'
500
584
% (output_encoding, get_user_encoding())
798
893
(date_fmt, tt, offset_str) = \
799
894
_format_date(t, offset, timezone, date_fmt, show_offset)
800
895
date_str = time.strftime(date_fmt, tt)
801
if not isinstance(date_str, unicode):
896
if not isinstance(date_str, text_type):
802
897
date_str = date_str.decode(get_user_encoding(), 'replace')
803
898
return date_str + offset_str
806
901
def _format_date(t, offset, timezone, date_fmt, show_offset):
807
902
if timezone == 'utc':
810
905
elif timezone == 'original':
811
906
if offset is None:
813
tt = time.gmtime(t + offset)
908
tt = gmtime(t + offset)
814
909
elif timezone == 'local':
815
910
tt = time.localtime(t)
816
911
offset = local_time_offset(t)
818
raise errors.UnsupportedTimezoneFormat(timezone)
913
raise UnsupportedTimezoneFormat(timezone)
819
914
if date_fmt is None:
820
915
date_fmt = "%a %Y-%m-%d %H:%M:%S"
882
977
"""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
978
return os.fstat(f.fileno())[stat.ST_SIZE]
981
# Alias os.urandom to support platforms (which?) without /dev/urandom and
982
# override if it doesn't work. Avoid checking on windows where there is
983
# significant initialisation cost that can be avoided for some bzr calls.
985
rand_bytes = os.urandom
987
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):
990
except NotImplementedError:
899
991
# not well seeded, but better than nothing
900
992
def rand_bytes(n):
970
1065
implementation should be loaded instead::
973
>>> import bzrlib._fictional_extension_pyx
1068
>>> import breezy._fictional_extension_pyx
974
1069
>>> except ImportError, e:
975
>>> bzrlib.osutils.failed_to_load_extension(e)
976
>>> import bzrlib._fictional_extension_py
1070
>>> breezy.osutils.failed_to_load_extension(e)
1071
>>> import breezy._fictional_extension_py
978
1073
# NB: This docstring is just an example, not a doctest, because doctest
979
1074
# currently can't cope with the use of lazy imports in this namespace --
982
1077
# This currently doesn't report the failure at the time it occurs, because
983
1078
# they tend to happen very early in startup when we can't check config
984
1079
# files etc, and also we want to report all failures but not spam the user
985
1080
# with 10 warnings.
986
from bzrlib import trace
987
1081
exception_str = str(exception)
988
1082
if exception_str not in _extension_load_failures:
989
1083
trace.mutter("failed to load compiled extension: %s" % exception_str)
993
1087
def report_extension_load_failures():
994
1088
if not _extension_load_failures:
996
from bzrlib.config import GlobalConfig
997
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
1090
if config.GlobalConfig().suppress_warning('missing_extensions'):
999
1092
# the warnings framework should by default show this only once
1000
from bzrlib.trace import warning
1093
from .trace import warning
1002
"bzr: warning: some compiled extensions could not be loaded; "
1003
"see <https://answers.launchpad.net/bzr/+faq/703>")
1095
"brz: warning: some compiled extensions could not be loaded; "
1096
"see ``brz help missing-extensions``")
1004
1097
# we no longer show the specific missing extensions here, because it makes
1005
1098
# the message too long and scary - see
1006
1099
# https://bugs.launchpad.net/bzr/+bug/430529
1010
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
1011
except ImportError, e:
1103
from ._chunks_to_lines_pyx import chunks_to_lines
1104
except ImportError as e:
1012
1105
failed_to_load_extension(e)
1013
from bzrlib._chunks_to_lines_py import chunks_to_lines
1106
from ._chunks_to_lines_py import chunks_to_lines
1016
1109
def split_lines(s):
1049
1143
os.link(src, dest)
1050
except (OSError, IOError), e:
1144
except (OSError, IOError) as e:
1051
1145
if e.errno != errno.EXDEV:
1053
1147
shutil.copyfile(src, dest)
1056
1150
def delete_any(path):
1057
"""Delete a file, symlink or directory.
1151
"""Delete a file, symlink or directory.
1059
1153
Will delete even if readonly.
1062
1156
_delete_file_or_dir(path)
1063
except (OSError, IOError), e:
1157
except (OSError, IOError) as e:
1064
1158
if e.errno in (errno.EPERM, errno.EACCES):
1065
1159
# make writable and try again
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 isinstance(filename, text_type):
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.
1284
1394
return unicode_or_utf8_string.encode('utf-8')
1287
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
1288
' Revision id generators should be creating utf8'
1292
def safe_revision_id(unicode_or_utf8_string, warn=True):
1397
def safe_revision_id(unicode_or_utf8_string):
1293
1398
"""Revision ids should now be utf8, but at one point they were unicode.
1295
1400
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
1297
:param warn: Functions that are sanitizing user data can set warn=False
1298
1402
:return: None or a utf8 revision id.
1300
1404
if (unicode_or_utf8_string is None
1301
or unicode_or_utf8_string.__class__ == str):
1405
or unicode_or_utf8_string.__class__ == bytes):
1302
1406
return unicode_or_utf8_string
1304
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
1306
return cache_utf8.encode(unicode_or_utf8_string)
1309
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
1310
' generators should be creating utf8 file ids.')
1313
def safe_file_id(unicode_or_utf8_string, warn=True):
1407
raise TypeError('Unicode revision ids are no longer supported. '
1408
'Revision id generators should be creating utf8 revision '
1412
def safe_file_id(unicode_or_utf8_string):
1314
1413
"""File ids should now be utf8, but at one point they were unicode.
1316
1415
This is the same as safe_utf8, except it uses the cached encode functions
1424
1526
None is returned if the width can't established precisely.
1427
- if BZR_COLUMNS is set, returns its value
1529
- if BRZ_COLUMNS is set, returns its value
1428
1530
- if there is no controlling terminal, returns None
1531
- query the OS, if the queried size has changed since the last query,
1429
1533
- if COLUMNS is set, returns its value,
1534
- if the OS has a value (even though it's never changed), return its value.
1431
1536
From there, we need to query the OS to get the size of the controlling
1539
On Unices we query the OS by:
1435
1540
- get termios.TIOCGWINSZ
1436
1541
- if an error occurs or a negative value is obtained, returns None
1543
On Windows we query the OS by:
1440
1544
- win32utils.get_console_size() decides,
1441
1545
- returns None on error (provided default value)
1547
# Note to implementors: if changing the rules for determining the width,
1548
# make sure you've considered the behaviour in these cases:
1549
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1550
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1552
# - (add more interesting cases here, if you find any)
1553
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1554
# but we don't want to register a signal handler because it is impossible
1555
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1556
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1557
# time so we can notice if the reported size has changed, which should have
1444
# If BZR_COLUMNS is set, take it, user is always right
1560
# If BRZ_COLUMNS is set, take it, user is always right
1561
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1563
width = int(os.environ['BRZ_COLUMNS'])
1447
1564
except (KeyError, ValueError):
1566
if width is not None:
1450
1572
isatty = getattr(sys.stdout, 'isatty', None)
1451
if isatty is None or not isatty():
1452
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
1573
if isatty is None or not isatty():
1574
# Don't guess, setting BRZ_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))
1578
width, height = os_size = _terminal_size(None, None)
1579
global _first_terminal_size, _terminal_size_state
1580
if _terminal_size_state == 'no_data':
1581
_first_terminal_size = os_size
1582
_terminal_size_state = 'unchanged'
1583
elif (_terminal_size_state == 'unchanged' and
1584
_first_terminal_size != os_size):
1585
_terminal_size_state = 'changed'
1587
# If the OS claims to know how wide the terminal is, and this value has
1588
# ever changed, use that.
1589
if _terminal_size_state == 'changed':
1590
if width is not None and width > 0:
1593
# If COLUMNS is set, use it.
1459
1595
return int(os.environ['COLUMNS'])
1460
1596
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1599
# Finally, use an unchanged size from the OS, if we have one.
1600
if _terminal_size_state == 'unchanged':
1601
if width is not None and width > 0:
1604
# The width could not be determined.
1471
1608
def _win32_terminal_size(width, height):
1498
1635
_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
1638
def supports_executable():
1527
1639
return sys.platform != "win32"
1712
1824
global _selected_dir_reader
1713
1825
if _selected_dir_reader is None:
1714
fs_encoding = _fs_enc.upper()
1715
if sys.platform == "win32" and win32utils.winver == 'Windows NT':
1716
# Win98 doesn't have unicode apis like FindFirstFileW
1717
# TODO: We possibly could support Win98 by falling back to the
1718
# original FindFirstFile, and using TCHAR instead of WCHAR,
1719
# but that gets a bit tricky, and requires custom compiling
1826
if sys.platform == "win32":
1722
from bzrlib._walkdirs_win32 import Win32ReadDir
1828
from ._walkdirs_win32 import Win32ReadDir
1723
1829
_selected_dir_reader = Win32ReadDir()
1724
1830
except ImportError:
1726
elif fs_encoding in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1727
# ANSI_X3.4-1968 is a form of ASCII
1832
elif _fs_enc in ('utf-8', 'ascii'):
1729
from bzrlib._readdir_pyx import UTF8DirReader
1834
from ._readdir_pyx import UTF8DirReader
1730
1835
_selected_dir_reader = UTF8DirReader()
1731
except ImportError, e:
1836
except ImportError as e:
1732
1837
failed_to_load_extension(e)
1886
1994
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
1997
def get_user_encoding():
1890
1998
"""Find out what the preferred user encoding is.
1892
2000
This is generally the encoding that is used for command line parameters
1893
2001
and file contents. This may be different from the terminal encoding
1894
2002
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
2004
:return: A string defining the preferred user encoding
1902
2006
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
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)
1949
sys.stderr.write('bzr: warning:'
2021
user_encoding = codecs.lookup(user_encoding).name
2023
if user_encoding not in ("", "cp0"):
2024
sys.stderr.write('brz: 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.
2028
2123
def send_all(sock, bytes, report_activity=None):
2029
2124
"""Send all bytes on a socket.
2031
2126
Breaks large blocks in smaller chunks to avoid buffering limitations on
2032
2127
some platforms, and catches EINTR which may be thrown if the send is
2033
2128
interrupted by a signal.
2035
2130
This is preferred to socket.sendall(), because it avoids portability bugs
2036
2131
and provides activity reporting.
2038
2133
:param report_activity: Call this as bytes are read, see
2039
2134
Transport._report_activity
2042
2137
byte_count = len(bytes)
2138
view = memoryview(bytes)
2043
2139
while sent_total < byte_count:
2045
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2046
except socket.error, e:
2141
sent = sock.send(view[sent_total:sent_total+MAX_SOCKET_CHUNK])
2142
except (socket.error, IOError) as e:
2143
if e.args[0] in _end_of_stream_errors:
2144
raise errors.ConnectionReset(
2145
"Error trying to write to socket", e)
2047
2146
if e.args[0] != errno.EINTR:
2150
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2050
2152
sent_total += sent
2051
report_activity(sent, 'write')
2153
if report_activity is not None:
2154
report_activity(sent, 'write')
2157
def connect_socket(address):
2158
# Slight variation of the socket.create_connection() function (provided by
2159
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2160
# provide it for previous python versions. Also, we don't use the timeout
2161
# parameter (provided by the python implementation) so we don't implement
2163
err = socket.error('getaddrinfo returns an empty list')
2164
host, port = address
2165
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2166
af, socktype, proto, canonname, sa = res
2169
sock = socket.socket(af, socktype, proto)
2173
except socket.error as err:
2174
# 'err' is now the most recent error
2175
if sock is not None:
2054
2180
def dereference_path(path):
2082
2208
If and when pkg_resources becomes a standard library, this routine
2083
2209
can delegate to it.
2085
# Check package name is within bzrlib
2086
if package == "bzrlib":
2211
# Check package name is within breezy
2212
if package == "breezy":
2087
2213
resource_relpath = resource_name
2088
elif package.startswith("bzrlib."):
2089
package = package[len("bzrlib."):].replace('.', os.sep)
2214
elif package.startswith("breezy."):
2215
package = package[len("breezy."):].replace('.', os.sep)
2090
2216
resource_relpath = pathjoin(package, resource_name)
2092
raise errors.BzrError('resource package %s not in bzrlib' % package)
2218
raise errors.BzrError('resource package %s not in breezy' % package)
2094
2220
# Map the resource to a file and read its contents
2095
base = dirname(bzrlib.__file__)
2221
base = dirname(breezy.__file__)
2096
2222
if getattr(sys, 'frozen', None): # bzr.exe
2097
2223
base = abspath(pathjoin(base, '..', '..'))
2098
filename = pathjoin(base, resource_relpath)
2099
return open(filename, 'rU').read()
2224
f = file(pathjoin(base, resource_relpath), "rU")
2102
2230
def file_kind_from_stat_mode_thunk(mode):
2103
2231
global file_kind_from_stat_mode
2104
2232
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2106
from bzrlib._readdir_pyx import UTF8DirReader
2234
from ._readdir_pyx import UTF8DirReader
2107
2235
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2108
except ImportError, e:
2236
except ImportError as e:
2109
2237
# This is one time where we won't warn that an extension failed to
2110
2238
# load. The extension is never available on Windows anyway.
2111
from bzrlib._readdir_py import (
2239
from ._readdir_py import (
2112
2240
_kind_from_mode as file_kind_from_stat_mode
2114
2242
return file_kind_from_stat_mode(mode)
2115
2243
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2245
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2249
except OSError as e:
2122
2250
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2251
raise errors.NoSuchFile(f)
2254
def file_kind(f, _lstat=os.lstat):
2255
stat_value = file_stat(f, _lstat)
2256
return file_kind_from_stat_mode(stat_value.st_mode)
2127
2258
def until_no_eintr(f, *a, **kw):
2128
2259
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2261
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2262
if EINTR does occur. This is typically only true for low-level operations
2132
2263
like os.read. If in any doubt, don't use this.
2134
2265
Keep in mind that this is not a complete solution to EINTR. There is
2135
2266
probably code in the Python standard library and other dependencies that
2136
2267
may encounter EINTR if a signal arrives (and there is signal handler for
2137
that signal). So this function can reduce the impact for IO that bzrlib
2268
that signal). So this function can reduce the impact for IO that breezy
2138
2269
directly controls, but it is not a complete solution.
2140
2271
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2143
2274
return f(*a, **kw)
2144
except (IOError, OSError), e:
2275
except (IOError, OSError) as e:
2145
2276
if e.errno == errno.EINTR:
2150
def re_compile_checked(re_string, flags=0, where=""):
2151
"""Return a compiled re, or raise a sensible error.
2153
This should only be used when compiling user-supplied REs.
2155
:param re_string: Text form of regular expression.
2156
:param flags: eg re.IGNORECASE
2157
:param where: Message explaining to the user the context where
2158
it occurred, eg 'log search filter'.
2160
# from https://bugs.launchpad.net/bzr/+bug/251352
2162
re_obj = re.compile(re_string, flags)
2167
where = ' in ' + where
2168
# despite the name 'error' is a type
2169
raise errors.BzrCommandError('Invalid regular expression%s: %r: %s'
2170
% (where, re_string, e))
2173
2281
if sys.platform == "win32":
2176
2284
return msvcrt.getch()
2181
2289
fd = sys.stdin.fileno()
2182
2290
settings = termios.tcgetattr(fd)
2187
2295
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2298
if sys.platform.startswith('linux'):
2192
2299
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
2301
return os.sysconf('SC_NPROCESSORS_ONLN')
2302
except (ValueError, OSError, AttributeError):
2199
2304
elif sys.platform == 'darwin':
2200
2305
def _local_concurrency():
2201
2306
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2307
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2308
elif "bsd" in sys.platform:
2204
2309
def _local_concurrency():
2205
2310
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2311
stdout=subprocess.PIPE).communicate()[0]
2302
2412
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2414
open_file = open
2417
def available_backup_name(base, exists):
2418
"""Find a non-existing backup file name.
2420
This will *not* create anything, this only return a 'free' entry. This
2421
should be used for checking names in a directory below a locked
2422
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2423
Leap) and generally discouraged.
2425
:param base: The base name.
2427
:param exists: A callable returning True if the path parameter exists.
2430
name = "%s.~%d~" % (base, counter)
2433
name = "%s.~%d~" % (base, counter)
2437
def set_fd_cloexec(fd):
2438
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2439
support for this is not available.
2443
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2444
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2445
except (ImportError, AttributeError):
2446
# Either the fcntl module or specific constants are not present
2450
def find_executable_on_path(name):
2451
"""Finds an executable on the PATH.
2453
On Windows, this will try to append each extension in the PATHEXT
2454
environment variable to the name, if it cannot be found with the name
2457
:param name: The base name of the executable.
2458
:return: The path to the executable found or None.
2460
if sys.platform == 'win32':
2461
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2462
exts = [ext.lower() for ext in exts]
2463
base, ext = os.path.splitext(name)
2465
if ext.lower() not in exts:
2471
path = os.environ.get('PATH')
2472
if path is not None:
2473
path = path.split(os.pathsep)
2476
f = os.path.join(d, name) + ext
2477
if os.access(f, os.X_OK):
2479
if sys.platform == 'win32':
2480
app_path = win32utils.get_app_path(name)
2481
if app_path != name:
2486
def _posix_is_local_pid_dead(pid):
2487
"""True if pid doesn't correspond to live process on this machine"""
2489
# Special meaning of unix kill: just check if it's there.
2491
except OSError as e:
2492
if e.errno == errno.ESRCH:
2493
# On this machine, and really not found: as sure as we can be
2496
elif e.errno == errno.EPERM:
2497
# exists, though not ours
2500
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2501
# Don't really know.
2504
# Exists and our process: not dead.
2507
if sys.platform == "win32":
2508
is_local_pid_dead = win32utils.is_local_pid_dead
2510
is_local_pid_dead = _posix_is_local_pid_dead
2512
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2513
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2514
if getattr(errno, name, None) is not None]
2517
def fdatasync(fileno):
2518
"""Flush file contents to disk if possible.
2520
:param fileno: Integer OS file handle.
2521
:raises TransportNotPossible: If flushing to disk is not possible.
2523
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2527
except IOError as e:
2528
# See bug #1075108, on some platforms fdatasync exists, but can
2529
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2530
# and reduce the chance of corruption-on-powerloss situations. It
2531
# is not a mandatory call, so it is ok to suppress failures.
2532
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2533
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2537
def ensure_empty_directory_exists(path, exception_class):
2538
"""Make sure a local directory exists and is empty.
2540
If it does not exist, it is created. If it exists and is not empty, an
2541
instance of exception_class is raised.
2545
except OSError as e:
2546
if e.errno != errno.EEXIST:
2548
if os.listdir(path) != []:
2549
raise exception_class(path)
2552
def is_environment_error(evalue):
2553
"""True if exception instance is due to a process environment issue
2555
This includes OSError and IOError, but also other errors that come from
2556
the operating system or core libraries but are not subclasses of those.
2558
if isinstance(evalue, (EnvironmentError, select.error)):
2560
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):