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
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from bzrlib.lazy_import import lazy_import
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from .lazy_import import lazy_import
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lazy_import(globals(), """
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from datetime import datetime
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from ntpath import (abspath as _nt_abspath,
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normpath as _nt_normpath,
32
realpath as _nt_realpath,
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splitdrive as _nt_splitdrive,
30
from datetime import timedelta
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# We need to import both shutil and rmtree as we export the later on posix
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# and need the former on windows
39
from shutil import rmtree
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# 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 (
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from tempfile import mkdtemp
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from breezy.i18n import gettext
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from bzrlib.symbol_versioning import (
62
from .symbol_versioning import (
57
64
deprecated_function,
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# sha and md5 modules are deprecated in python2.6 but hashlib is available as
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if sys.version_info < (2, 5):
64
import md5 as _mod_md5
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import sha as _mod_sha
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from bzrlib import symbol_versioning
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warn as warn_deprecated,
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from . import symbol_versioning, _fs_enc
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# Cross platform wall-clock time functionality with decent resolution.
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def get_unicode_argv():
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104
user_encoding = get_user_encoding()
102
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return [a.decode(user_encoding) for a in sys.argv[1:]]
103
106
except UnicodeDecodeError:
104
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
107
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
108
"application locale.").format(a, user_encoding))
108
111
def make_readonly(filename):
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112
"""Make a filename read-only."""
110
113
mod = os.lstat(filename).st_mode
111
114
if not stat.S_ISLNK(mod):
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os.chmod(filename, mod)
116
chmod_if_possible(filename, mod)
116
119
def make_writable(filename):
117
120
mod = os.lstat(filename).st_mode
118
121
if not stat.S_ISLNK(mod):
120
os.chmod(filename, mod)
123
chmod_if_possible(filename, mod)
126
def chmod_if_possible(filename, mode):
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# Set file mode if that can be safely done.
128
# Sometimes even on unix the filesystem won't allow it - see
129
# https://bugs.launchpad.net/bzr/+bug/606537
131
# It is probably faster to just do the chmod, rather than
132
# doing a stat, and then trying to compare
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os.chmod(filename, mode)
134
except (IOError, OSError) as e:
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# Permission/access denied seems to commonly happen on smbfs; there's
136
# probably no point warning about it.
137
# <https://bugs.launchpad.net/bzr/+bug/606537>
138
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
139
trace.mutter("ignore error on chmod of %r: %r" % (
123
145
def minimum_path_selection(paths):
232
254
file_existed = False
234
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rename_func(new, tmp_name)
235
except (errors.NoSuchFile,), e:
257
except (errors.NoSuchFile,) as e:
238
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# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
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# function raises an IOError with errno is None when a rename fails.
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# This then gets caught here.
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if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
265
except Exception as e:
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if (getattr(e, 'errno', None) is None
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or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
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file_existed = True
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# This may throw an exception, in which case success will
256
rename_func(old, new)
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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
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# source by when we tried to rename target
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failure_exc = sys.exc_info()
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if (file_existed and e.errno in (None, errno.ENOENT)
264
and old.lower() == new.lower()):
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# source and target are the same file on a case-insensitive
266
# filesystem, so we don't generate an exception
274
# This may throw an exception, in which case success will
276
rename_func(old, new)
278
except (IOError, OSError) as e:
279
# source and target may be aliases of each other (e.g. on a
280
# case-insensitive filesystem), so we may have accidentally renamed
281
# source by when we tried to rename target
282
if (file_existed and e.errno in (None, errno.ENOENT)
283
and old.lower() == new.lower()):
284
# source and target are the same file on a case-insensitive
285
# filesystem, so we don't generate an exception
270
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# If the file used to exist, rename it back into place
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unlink_func(tmp_name)
275
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rename_func(tmp_name, new)
276
if failure_exc is not None:
277
raise failure_exc[0], failure_exc[1], failure_exc[2]
280
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# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
281
300
# choke on a Unicode string containing a relative path if
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
284
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
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def _posix_abspath(path):
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# jam 20060426 rather than encoding to fsencoding
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# copy posixpath.abspath, but use os.getcwdu instead
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if not posixpath.isabs(path):
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path = posixpath.join(getcwd(), path)
290
return posixpath.normpath(path)
308
return _posix_normpath(path)
293
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def _posix_realpath(path):
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return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
315
def _posix_normpath(path):
316
path = posixpath.normpath(path)
317
# Bug 861008: posixpath.normpath() returns a path normalized according to
318
# the POSIX standard, which stipulates (for compatibility reasons) that two
319
# leading slashes must not be simplified to one, and only if there are 3 or
320
# more should they be simplified as one. So we treat the leading 2 slashes
321
# as a special case here by simply removing the first slash, as we consider
322
# that breaking POSIX compatibility for this obscure feature is acceptable.
323
# This is not a paranoid precaution, as we notably get paths like this when
324
# the repo is hosted at the root of the filesystem, i.e. in "/".
325
if path.startswith('//'):
330
def _posix_path_from_environ(key):
331
"""Get unicode path from `key` in environment or None if not present
333
Note that posix systems use arbitrary byte strings for filesystem objects,
334
so a path that raises BadFilenameEncoding here may still be accessible.
336
val = os.environ.get(key, None)
340
return val.decode(_fs_enc)
341
except UnicodeDecodeError:
342
# GZ 2011-12-12:Ideally want to include `key` in the exception message
343
raise errors.BadFilenameEncoding(val, _fs_enc)
346
def _posix_get_home_dir():
347
"""Get the home directory of the current user as a unicode path"""
348
path = posixpath.expanduser("~")
350
return path.decode(_fs_enc)
351
except AttributeError:
353
except UnicodeDecodeError:
354
raise errors.BadFilenameEncoding(path, _fs_enc)
357
def _posix_getuser_unicode():
358
"""Get username from environment or password database as unicode"""
359
name = getpass.getuser()
360
user_encoding = get_user_encoding()
362
return name.decode(user_encoding)
363
except UnicodeDecodeError:
364
raise errors.BzrError("Encoding of username %r is unsupported by %s "
365
"application locale." % (name, user_encoding))
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def _win32_fixdrive(path):
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"""Force drive letters to be consistent.
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397
# /path => C:/path
327
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path = unicode(path)
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# check for absolute path
329
drive = _nt_splitdrive(path)[0]
400
drive = ntpath.splitdrive(path)[0]
330
401
if drive == '' and path[:2] not in('//','\\\\'):
332
403
# we cannot simply os.path.join cwd and path
333
404
# because os.path.join('C:','/path') produce '/path'
334
405
# and this is incorrect
335
406
if path[:1] in ('/','\\'):
336
cwd = _nt_splitdrive(cwd)[0]
407
cwd = ntpath.splitdrive(cwd)[0]
338
409
path = cwd + '\\' + path
339
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
410
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
342
413
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('\\', '/'))
414
# Real ntpath.realpath doesn't have a problem with a unicode cwd
415
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
347
418
def _win32_pathjoin(*args):
348
return _nt_join(*args).replace('\\', '/')
419
return ntpath.join(*args).replace('\\', '/')
351
422
def _win32_normpath(path):
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
423
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
355
426
def _win32_getcwd():
356
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
427
return _win32_fixdrive(_getcwd().replace('\\', '/'))
359
430
def _win32_mkdtemp(*args, **kwargs):
360
431
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
434
def _win32_rename(old, new):
372
435
"""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
452
def _mac_getcwd():
400
return unicodedata.normalize('NFC', os.getcwdu())
453
return unicodedata.normalize('NFC', _getcwd())
456
def _rename_wrap_exception(rename_func):
457
"""Adds extra information to any exceptions that come from rename().
459
The exception has an updated message and 'old_filename' and 'new_filename'
463
def _rename_wrapper(old, new):
465
rename_func(old, new)
467
detailed_error = OSError(e.errno, e.strerror +
468
" [occurred when renaming '%s' to '%s']" %
470
detailed_error.old_filename = old
471
detailed_error.new_filename = new
474
return _rename_wrapper
477
if sys.version_info > (3,):
483
# Default rename wraps os.rename()
484
rename = _rename_wrap_exception(os.rename)
403
486
# Default is to just use the python builtins, but these can be rebound on
404
487
# particular platforms.
405
488
abspath = _posix_abspath
406
489
realpath = _posix_realpath
407
490
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
491
normpath = _posix_normpath
492
path_from_environ = _posix_path_from_environ
493
_get_home_dir = _posix_get_home_dir
494
getuser_unicode = _posix_getuser_unicode
411
496
dirname = os.path.dirname
412
497
basename = os.path.basename
413
498
split = os.path.split
414
499
splitext = os.path.splitext
415
# These were already imported into local scope
500
# These were already lazily imported into local scope
416
501
# mkdtemp = tempfile.mkdtemp
417
502
# rmtree = shutil.rmtree
419
510
MIN_ABS_PATHLENGTH = 1
471
573
On my standard US Windows XP, the preferred encoding is
472
574
cp1252, but the console is cp437
576
:param trace: If True trace the selected encoding via mutter().
474
from bzrlib.trace import mutter
578
from .trace import mutter
475
579
output_encoding = getattr(sys.stdout, 'encoding', None)
476
580
if not output_encoding:
477
581
input_encoding = getattr(sys.stdin, 'encoding', None)
478
582
if not input_encoding:
479
583
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
585
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
588
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
590
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
594
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
595
if output_encoding == 'cp0':
488
596
# invalid encoding (cp0 means 'no codepage' on Windows)
489
597
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
599
mutter('cp0 is invalid encoding.'
491
600
' encoding stdout as osutils.get_user_encoding() %r',
495
604
codecs.lookup(output_encoding)
496
605
except LookupError:
497
sys.stderr.write('bzr: warning:'
606
sys.stderr.write('brz: warning:'
498
607
' unknown terminal encoding %s.\n'
499
608
' Using encoding %s instead.\n'
500
609
% (output_encoding, get_user_encoding())
798
917
(date_fmt, tt, offset_str) = \
799
918
_format_date(t, offset, timezone, date_fmt, show_offset)
800
919
date_str = time.strftime(date_fmt, tt)
801
if not isinstance(date_str, unicode):
920
if not isinstance(date_str, text_type):
802
921
date_str = date_str.decode(get_user_encoding(), 'replace')
803
922
return date_str + offset_str
806
925
def _format_date(t, offset, timezone, date_fmt, show_offset):
807
926
if timezone == 'utc':
810
929
elif timezone == 'original':
811
930
if offset is None:
813
tt = time.gmtime(t + offset)
932
tt = gmtime(t + offset)
814
933
elif timezone == 'local':
815
934
tt = time.localtime(t)
816
935
offset = local_time_offset(t)
881
1000
def filesize(f):
882
1001
"""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
1002
return os.fstat(f.fileno())[stat.ST_SIZE]
1005
# Alias os.urandom to support platforms (which?) without /dev/urandom and
1006
# override if it doesn't work. Avoid checking on windows where there is
1007
# significant initialisation cost that can be avoided for some bzr calls.
1009
rand_bytes = os.urandom
1011
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):
1014
except NotImplementedError:
899
1015
# not well seeded, but better than nothing
900
1016
def rand_bytes(n):
970
1086
implementation should be loaded instead::
973
>>> import bzrlib._fictional_extension_pyx
1089
>>> import breezy._fictional_extension_pyx
974
1090
>>> except ImportError, e:
975
>>> bzrlib.osutils.failed_to_load_extension(e)
976
>>> import bzrlib._fictional_extension_py
1091
>>> breezy.osutils.failed_to_load_extension(e)
1092
>>> import breezy._fictional_extension_py
978
1094
# NB: This docstring is just an example, not a doctest, because doctest
979
1095
# currently can't cope with the use of lazy imports in this namespace --
982
1098
# This currently doesn't report the failure at the time it occurs, because
983
1099
# they tend to happen very early in startup when we can't check config
984
1100
# files etc, and also we want to report all failures but not spam the user
985
1101
# with 10 warnings.
986
from bzrlib import trace
987
1102
exception_str = str(exception)
988
1103
if exception_str not in _extension_load_failures:
989
1104
trace.mutter("failed to load compiled extension: %s" % exception_str)
1049
1163
os.link(src, dest)
1050
except (OSError, IOError), e:
1164
except (OSError, IOError) as e:
1051
1165
if e.errno != errno.EXDEV:
1053
1167
shutil.copyfile(src, dest)
1056
1170
def delete_any(path):
1057
"""Delete a file, symlink or directory.
1171
"""Delete a file, symlink or directory.
1059
1173
Will delete even if readonly.
1062
1176
_delete_file_or_dir(path)
1063
except (OSError, IOError), e:
1177
except (OSError, IOError) as e:
1064
1178
if e.errno in (errno.EPERM, errno.EACCES):
1065
1179
# make writable and try again
1250
1364
# but for now, we haven't optimized...
1251
1365
return [canonical_relpath(base, p) for p in paths]
1368
def decode_filename(filename):
1369
"""Decode the filename using the filesystem encoding
1371
If it is unicode, it is returned.
1372
Otherwise it is decoded from the the filesystem's encoding. If decoding
1373
fails, a errors.BadFilenameEncoding exception is raised.
1375
if isinstance(filename, text_type):
1378
return filename.decode(_fs_enc)
1379
except UnicodeDecodeError:
1380
raise errors.BadFilenameEncoding(filename, _fs_enc)
1253
1383
def safe_unicode(unicode_or_utf8_string):
1254
1384
"""Coerce unicode_or_utf8_string into unicode.
1424
1560
None is returned if the width can't established precisely.
1427
- if BZR_COLUMNS is set, returns its value
1563
- if BRZ_COLUMNS is set, returns its value
1428
1564
- if there is no controlling terminal, returns None
1565
- query the OS, if the queried size has changed since the last query,
1429
1567
- if COLUMNS is set, returns its value,
1568
- if the OS has a value (even though it's never changed), return its value.
1431
1570
From there, we need to query the OS to get the size of the controlling
1573
On Unices we query the OS by:
1435
1574
- get termios.TIOCGWINSZ
1436
1575
- if an error occurs or a negative value is obtained, returns None
1577
On Windows we query the OS by:
1440
1578
- win32utils.get_console_size() decides,
1441
1579
- returns None on error (provided default value)
1581
# Note to implementors: if changing the rules for determining the width,
1582
# make sure you've considered the behaviour in these cases:
1583
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1584
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1586
# - (add more interesting cases here, if you find any)
1587
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1588
# but we don't want to register a signal handler because it is impossible
1589
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1590
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1591
# 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
1594
# If BRZ_COLUMNS is set, take it, user is always right
1595
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1597
width = int(os.environ['BRZ_COLUMNS'])
1447
1598
except (KeyError, ValueError):
1600
if width is not None:
1450
1606
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.
1607
if isatty is None or not isatty():
1608
# 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))
1612
width, height = os_size = _terminal_size(None, None)
1613
global _first_terminal_size, _terminal_size_state
1614
if _terminal_size_state == 'no_data':
1615
_first_terminal_size = os_size
1616
_terminal_size_state = 'unchanged'
1617
elif (_terminal_size_state == 'unchanged' and
1618
_first_terminal_size != os_size):
1619
_terminal_size_state = 'changed'
1621
# If the OS claims to know how wide the terminal is, and this value has
1622
# ever changed, use that.
1623
if _terminal_size_state == 'changed':
1624
if width is not None and width > 0:
1627
# If COLUMNS is set, use it.
1459
1629
return int(os.environ['COLUMNS'])
1460
1630
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1633
# Finally, use an unchanged size from the OS, if we have one.
1634
if _terminal_size_state == 'unchanged':
1635
if width is not None and width > 0:
1638
# The width could not be determined.
1471
1642
def _win32_terminal_size(width, height):
1498
1669
_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
1672
def supports_executable():
1527
1673
return sys.platform != "win32"
1886
2033
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
2036
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1890
2037
"""Find out what the preferred user encoding is.
1892
2039
This is generally the encoding that is used for command line parameters
1893
2040
and file contents. This may be different from the terminal encoding
1894
2041
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
2043
:return: A string defining the preferred user encoding
1902
2045
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
2046
if deprecated_passed(use_cache):
2047
warn_deprecated("use_cache should only have been used for tests",
2048
DeprecationWarning, stacklevel=2)
2049
if _cached_user_encoding is not None:
1904
2050
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'
2052
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2053
# Use the existing locale settings and call nl_langinfo directly
2054
# rather than going through getpreferredencoding. This avoids
2055
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2056
# possibility of the setlocale call throwing an error.
2057
user_encoding = locale.nl_langinfo(locale.CODESET)
2059
# GZ 2011-12-19: On windows could call GetACP directly instead.
2060
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:'
2063
user_encoding = codecs.lookup(user_encoding).name
2065
if user_encoding not in ("", "cp0"):
2066
sys.stderr.write('brz: warning:'
1950
2067
' unknown encoding %s.'
1951
2068
' Continuing with ascii encoding.\n'
1952
2069
% user_encoding
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = user_encoding
2071
user_encoding = 'ascii'
2073
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2074
if user_encoding == 'ascii':
2075
if sys.platform == 'darwin':
2076
# OSX is special-cased in Python to have a UTF-8 filesystem
2077
# encoding and previously had LANG set here if not present.
2078
user_encoding = 'utf-8'
2079
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2080
# for some other posix platforms as well.
2082
_cached_user_encoding = user_encoding
1959
2083
return user_encoding
2086
def get_diff_header_encoding():
2087
return get_terminal_encoding()
1962
2090
def get_host_name():
1963
2091
"""Return the current unicode host name.
2043
2178
while sent_total < byte_count:
2045
2180
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2046
except socket.error, e:
2181
except (socket.error, IOError) as e:
2182
if e.args[0] in _end_of_stream_errors:
2183
raise errors.ConnectionReset(
2184
"Error trying to write to socket", e)
2047
2185
if e.args[0] != errno.EINTR:
2189
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2050
2191
sent_total += sent
2051
report_activity(sent, 'write')
2192
if report_activity is not None:
2193
report_activity(sent, 'write')
2196
def connect_socket(address):
2197
# Slight variation of the socket.create_connection() function (provided by
2198
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2199
# provide it for previous python versions. Also, we don't use the timeout
2200
# parameter (provided by the python implementation) so we don't implement
2202
err = socket.error('getaddrinfo returns an empty list')
2203
host, port = address
2204
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2205
af, socktype, proto, canonname, sa = res
2208
sock = socket.socket(af, socktype, proto)
2212
except socket.error as err:
2213
# 'err' is now the most recent error
2214
if sock is not None:
2054
2219
def dereference_path(path):
2082
2247
If and when pkg_resources becomes a standard library, this routine
2083
2248
can delegate to it.
2085
# Check package name is within bzrlib
2086
if package == "bzrlib":
2250
# Check package name is within breezy
2251
if package == "breezy":
2087
2252
resource_relpath = resource_name
2088
elif package.startswith("bzrlib."):
2089
package = package[len("bzrlib."):].replace('.', os.sep)
2253
elif package.startswith("breezy."):
2254
package = package[len("breezy."):].replace('.', os.sep)
2090
2255
resource_relpath = pathjoin(package, resource_name)
2092
raise errors.BzrError('resource package %s not in bzrlib' % package)
2257
raise errors.BzrError('resource package %s not in breezy' % package)
2094
2259
# Map the resource to a file and read its contents
2095
base = dirname(bzrlib.__file__)
2260
base = dirname(breezy.__file__)
2096
2261
if getattr(sys, 'frozen', None): # bzr.exe
2097
2262
base = abspath(pathjoin(base, '..', '..'))
2098
filename = pathjoin(base, resource_relpath)
2099
return open(filename, 'rU').read()
2263
f = file(pathjoin(base, resource_relpath), "rU")
2102
2269
def file_kind_from_stat_mode_thunk(mode):
2103
2270
global file_kind_from_stat_mode
2104
2271
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2106
from bzrlib._readdir_pyx import UTF8DirReader
2273
from ._readdir_pyx import UTF8DirReader
2107
2274
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2108
except ImportError, e:
2275
except ImportError as e:
2109
2276
# This is one time where we won't warn that an extension failed to
2110
2277
# load. The extension is never available on Windows anyway.
2111
from bzrlib._readdir_py import (
2278
from ._readdir_py import (
2112
2279
_kind_from_mode as file_kind_from_stat_mode
2114
2281
return file_kind_from_stat_mode(mode)
2115
2282
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2284
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2288
except OSError as e:
2122
2289
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2290
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)
2127
2297
def until_no_eintr(f, *a, **kw):
2128
2298
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2300
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2301
if EINTR does occur. This is typically only true for low-level operations
2132
2302
like os.read. If in any doubt, don't use this.
2134
2304
Keep in mind that this is not a complete solution to EINTR. There is
2135
2305
probably code in the Python standard library and other dependencies that
2136
2306
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
2307
that signal). So this function can reduce the impact for IO that breezy
2138
2308
directly controls, but it is not a complete solution.
2140
2310
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2143
2313
return f(*a, **kw)
2144
except (IOError, OSError), e:
2314
except (IOError, OSError) as e:
2145
2315
if e.errno == errno.EINTR:
2320
@deprecated_function(deprecated_in((2, 2, 0)))
2150
2321
def re_compile_checked(re_string, flags=0, where=""):
2151
2322
"""Return a compiled re, or raise a sensible error.
2187
2358
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2361
if sys.platform.startswith('linux'):
2192
2362
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
2364
return os.sysconf('SC_NPROCESSORS_ONLN')
2365
except (ValueError, OSError, AttributeError):
2199
2367
elif sys.platform == 'darwin':
2200
2368
def _local_concurrency():
2201
2369
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2370
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2371
elif "bsd" in sys.platform:
2204
2372
def _local_concurrency():
2205
2373
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2374
stdout=subprocess.PIPE).communicate()[0]
2231
2399
if _cached_local_concurrency is not None and use_cache:
2232
2400
return _cached_local_concurrency
2234
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2402
concurrency = os.environ.get('BRZ_CONCURRENCY', None)
2235
2403
if concurrency is None:
2237
concurrency = _local_concurrency()
2238
except (OSError, IOError):
2405
import multiprocessing
2406
concurrency = multiprocessing.cpu_count()
2407
except (ImportError, NotImplementedError):
2408
# multiprocessing is only available on Python >= 2.6
2409
# and multiprocessing.cpu_count() isn't implemented on all
2412
concurrency = _local_concurrency()
2413
except (OSError, IOError):
2241
2416
concurrency = int(concurrency)
2242
2417
except (TypeError, ValueError):
2302
2477
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2479
open_file = open
2482
def available_backup_name(base, exists):
2483
"""Find a non-existing backup file name.
2485
This will *not* create anything, this only return a 'free' entry. This
2486
should be used for checking names in a directory below a locked
2487
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2488
Leap) and generally discouraged.
2490
:param base: The base name.
2492
:param exists: A callable returning True if the path parameter exists.
2495
name = "%s.~%d~" % (base, counter)
2498
name = "%s.~%d~" % (base, counter)
2502
def set_fd_cloexec(fd):
2503
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2504
support for this is not available.
2508
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2509
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2510
except (ImportError, AttributeError):
2511
# Either the fcntl module or specific constants are not present
2515
def find_executable_on_path(name):
2516
"""Finds an executable on the PATH.
2518
On Windows, this will try to append each extension in the PATHEXT
2519
environment variable to the name, if it cannot be found with the name
2522
:param name: The base name of the executable.
2523
:return: The path to the executable found or None.
2525
if sys.platform == 'win32':
2526
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2527
exts = [ext.lower() for ext in exts]
2528
base, ext = os.path.splitext(name)
2530
if ext.lower() not in exts:
2536
path = os.environ.get('PATH')
2537
if path is not None:
2538
path = path.split(os.pathsep)
2541
f = os.path.join(d, name) + ext
2542
if os.access(f, os.X_OK):
2544
if sys.platform == 'win32':
2545
app_path = win32utils.get_app_path(name)
2546
if app_path != name:
2551
def _posix_is_local_pid_dead(pid):
2552
"""True if pid doesn't correspond to live process on this machine"""
2554
# Special meaning of unix kill: just check if it's there.
2556
except OSError as e:
2557
if e.errno == errno.ESRCH:
2558
# On this machine, and really not found: as sure as we can be
2561
elif e.errno == errno.EPERM:
2562
# exists, though not ours
2565
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2566
# Don't really know.
2569
# Exists and our process: not dead.
2572
if sys.platform == "win32":
2573
is_local_pid_dead = win32utils.is_local_pid_dead
2575
is_local_pid_dead = _posix_is_local_pid_dead
2577
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2578
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2579
if getattr(errno, name, None) is not None]
2582
def fdatasync(fileno):
2583
"""Flush file contents to disk if possible.
2585
:param fileno: Integer OS file handle.
2586
:raises TransportNotPossible: If flushing to disk is not possible.
2588
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2592
except IOError as e:
2593
# See bug #1075108, on some platforms fdatasync exists, but can
2594
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2595
# and reduce the chance of corruption-on-powerloss situations. It
2596
# is not a mandatory call, so it is ok to suppress failures.
2597
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2598
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2602
def ensure_empty_directory_exists(path, exception_class):
2603
"""Make sure a local directory exists and is empty.
2605
If it does not exist, it is created. If it exists and is not empty, an
2606
instance of exception_class is raised.
2610
except OSError as e:
2611
if e.errno != errno.EEXIST:
2613
if os.listdir(path) != []:
2614
raise exception_class(path)
2617
def is_environment_error(evalue):
2618
"""True if exception instance is due to a process environment issue
2620
This includes OSError and IOError, but also other errors that come from
2621
the operating system or core libraries but are not subclasses of those.
2623
if isinstance(evalue, (EnvironmentError, select.error)):
2625
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):