70
72
from bzrlib import symbol_versioning
75
# Cross platform wall-clock time functionality with decent resolution.
76
# On Linux ``time.clock`` returns only CPU time. On Windows, ``time.time()``
77
# only has a resolution of ~15ms. Note that ``time.clock()`` is not
78
# synchronized with ``time.time()``, this is only meant to be used to find
79
# delta times by subtracting from another call to this function.
80
timer_func = time.time
81
if sys.platform == 'win32':
82
timer_func = time.clock
73
84
# On win32, O_BINARY is used to indicate the file should
74
85
# be opened in binary mode, rather than text mode.
75
86
# On other platforms, O_BINARY doesn't exist, because
191
204
:param old: The old path, to rename from
192
205
:param new: The new path, to rename to
193
206
:param rename_func: The potentially non-atomic rename function
194
:param unlink_func: A way to delete the target file if the full rename succeeds
207
:param unlink_func: A way to delete the target file if the full rename
197
210
# sftp rename doesn't allow overwriting, so play tricks:
198
211
base = os.path.basename(new)
199
212
dirname = os.path.dirname(new)
200
tmp_name = u'tmp.%s.%.9f.%d.%s' % (base, time.time(), os.getpid(), rand_chars(10))
213
# callers use different encodings for the paths so the following MUST
214
# respect that. We rely on python upcasting to unicode if new is unicode
215
# and keeping a str if not.
216
tmp_name = 'tmp.%s.%.9f.%d.%s' % (base, time.time(),
217
os.getpid(), rand_chars(10))
201
218
tmp_name = pathjoin(dirname, tmp_name)
203
220
# Rename the file out of the way, but keep track if it didn't exist
706
732
date_str = time.strftime(date_fmt, tt)
707
733
return date_str + offset_str
736
# Cache of formatted offset strings
740
def format_date_with_offset_in_original_timezone(t, offset=0,
741
_cache=_offset_cache):
742
"""Return a formatted date string in the original timezone.
744
This routine may be faster then format_date.
746
:param t: Seconds since the epoch.
747
:param offset: Timezone offset in seconds east of utc.
751
tt = time.gmtime(t + offset)
752
date_fmt = _default_format_by_weekday_num[tt[6]]
753
date_str = time.strftime(date_fmt, tt)
754
offset_str = _cache.get(offset, None)
755
if offset_str is None:
756
offset_str = ' %+03d%02d' % (offset / 3600, (offset / 60) % 60)
757
_cache[offset] = offset_str
758
return date_str + offset_str
709
761
def format_local_date(t, offset=0, timezone='original', date_fmt=None,
710
762
show_offset=True):
711
763
"""Return an unicode date string formatted according to the current locale.
937
_extension_load_failures = []
940
def failed_to_load_extension(exception):
941
"""Handle failing to load a binary extension.
943
This should be called from the ImportError block guarding the attempt to
944
import the native extension. If this function returns, the pure-Python
945
implementation should be loaded instead::
948
>>> import bzrlib._fictional_extension_pyx
949
>>> except ImportError, e:
950
>>> bzrlib.osutils.failed_to_load_extension(e)
951
>>> import bzrlib._fictional_extension_py
953
# NB: This docstring is just an example, not a doctest, because doctest
954
# currently can't cope with the use of lazy imports in this namespace --
957
# This currently doesn't report the failure at the time it occurs, because
958
# they tend to happen very early in startup when we can't check config
959
# files etc, and also we want to report all failures but not spam the user
961
from bzrlib import trace
962
exception_str = str(exception)
963
if exception_str not in _extension_load_failures:
964
trace.mutter("failed to load compiled extension: %s" % exception_str)
965
_extension_load_failures.append(exception_str)
968
def report_extension_load_failures():
969
if not _extension_load_failures:
971
from bzrlib.config import GlobalConfig
972
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
974
# the warnings framework should by default show this only once
975
from bzrlib.trace import warning
977
"bzr: warning: some compiled extensions could not be loaded; "
978
"see <https://answers.launchpad.net/bzr/+faq/703>")
979
# we no longer show the specific missing extensions here, because it makes
980
# the message too long and scary - see
981
# https://bugs.launchpad.net/bzr/+bug/430529
885
985
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
986
except ImportError, e:
987
failed_to_load_extension(e)
887
988
from bzrlib._chunks_to_lines_py import chunks_to_lines
1238
1346
normalized_filename = _inaccessible_normalized_filename
1349
default_terminal_width = 80
1350
"""The default terminal width for ttys.
1352
This is defined so that higher levels can share a common fallback value when
1353
terminal_width() returns None.
1241
1357
def terminal_width():
1242
"""Return estimated terminal width."""
1243
if sys.platform == 'win32':
1244
return win32utils.get_console_size()[0]
1358
"""Return terminal width.
1360
None is returned if the width can't established precisely.
1363
- if BZR_COLUMNS is set, returns its value
1364
- if there is no controlling terminal, returns None
1365
- if COLUMNS is set, returns its value,
1367
From there, we need to query the OS to get the size of the controlling
1371
- get termios.TIOCGWINSZ
1372
- if an error occurs or a negative value is obtained, returns None
1376
- win32utils.get_console_size() decides,
1377
- returns None on error (provided default value)
1380
# If BZR_COLUMNS is set, take it, user is always right
1382
return int(os.environ['BZR_COLUMNS'])
1383
except (KeyError, ValueError):
1386
isatty = getattr(sys.stdout, 'isatty', None)
1387
if isatty is None or not isatty():
1388
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
1391
# If COLUMNS is set, take it, the terminal knows better (even inside a
1392
# given terminal, the application can decide to set COLUMNS to a lower
1393
# value (splitted screen) or a bigger value (scroll bars))
1395
return int(os.environ['COLUMNS'])
1396
except (KeyError, ValueError):
1399
width, height = _terminal_size(None, None)
1401
# Consider invalid values as meaning no width
1407
def _win32_terminal_size(width, height):
1408
width, height = win32utils.get_console_size(defaultx=width, defaulty=height)
1409
return width, height
1412
def _ioctl_terminal_size(width, height):
1247
1414
import struct, fcntl, termios
1248
1415
s = struct.pack('HHHH', 0, 0, 0, 0)
1249
1416
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1250
width = struct.unpack('HHHH', x)[1]
1417
height, width = struct.unpack('HHHH', x)[0:2]
1418
except (IOError, AttributeError):
1255
width = int(os.environ['COLUMNS'])
1420
return width, height
1422
_terminal_size = None
1423
"""Returns the terminal size as (width, height).
1425
:param width: Default value for width.
1426
:param height: Default value for height.
1428
This is defined specifically for each OS and query the size of the controlling
1429
terminal. If any error occurs, the provided default values should be returned.
1431
if sys.platform == 'win32':
1432
_terminal_size = _win32_terminal_size
1434
_terminal_size = _ioctl_terminal_size
1437
def _terminal_size_changed(signum, frame):
1438
"""Set COLUMNS upon receiving a SIGnal for WINdow size CHange."""
1439
width, height = _terminal_size(None, None)
1440
if width is not None:
1441
os.environ['COLUMNS'] = str(width)
1444
_registered_sigwinch = False
1446
def watch_sigwinch():
1447
"""Register for SIGWINCH, once and only once."""
1448
global _registered_sigwinch
1449
if not _registered_sigwinch:
1450
if sys.platform == 'win32':
1451
# Martin (gz) mentioned WINDOW_BUFFER_SIZE_RECORD from
1452
# ReadConsoleInput but I've no idea how to plug that in
1453
# the current design -- vila 20091216
1456
signal.signal(signal.SIGWINCH, _terminal_size_changed)
1457
_registered_sigwinch = True
1264
1460
def supports_executable():
added
removed
bzrlib/osutils.py
