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
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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 datetime import timedelta
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from ntpath import (abspath as _nt_abspath,
32
normpath as _nt_normpath,
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realpath as _nt_realpath,
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splitdrive as _nt_splitdrive,
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# 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
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# We need to import both tempfile and mkdtemp as we export the later on posix
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# and need the former on windows
44
from tempfile import (
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from tempfile import mkdtemp
54
from breezy.i18n import gettext
57
from bzrlib.symbol_versioning import (
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# 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
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from bzrlib import symbol_versioning
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# Cross platform wall-clock time functionality with decent resolution.
100
92
def get_unicode_argv():
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user_encoding = get_user_encoding()
103
97
return [a.decode(user_encoding) for a in sys.argv[1:]]
104
98
except UnicodeDecodeError:
105
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
99
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
100
"application locale.").format(a, user_encoding))
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103
def make_readonly(filename):
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"""Make a filename read-only."""
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mod = os.lstat(filename).st_mode
112
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if not stat.S_ISLNK(mod):
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os.chmod(filename, mod)
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chmod_if_possible(filename, mod)
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111
def make_writable(filename):
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mod = os.lstat(filename).st_mode
119
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if not stat.S_ISLNK(mod):
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os.chmod(filename, mod)
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chmod_if_possible(filename, mod)
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def chmod_if_possible(filename, mode):
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# Set file mode if that can be safely done.
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# Sometimes even on unix the filesystem won't allow it - see
121
# https://bugs.launchpad.net/bzr/+bug/606537
123
# It is probably faster to just do the chmod, rather than
124
# doing a stat, and then trying to compare
125
os.chmod(filename, mode)
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except (IOError, OSError) as e:
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# Permission/access denied seems to commonly happen on smbfs; there's
128
# probably no point warning about it.
129
# <https://bugs.launchpad.net/bzr/+bug/606537>
130
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
131
trace.mutter("ignore error on chmod of %r: %r" % (
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137
def minimum_path_selection(paths):
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246
file_existed = False
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rename_func(new, tmp_name)
236
except (errors.NoSuchFile,), e:
249
except (errors.NoSuchFile,) as e:
239
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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.
242
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if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
257
except Exception as e:
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if (getattr(e, 'errno', None) is None
246
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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
257
rename_func(old, new)
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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)
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and old.lower() == new.lower()):
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# source and target are the same file on a case-insensitive
267
# filesystem, so we don't generate an exception
266
# This may throw an exception, in which case success will
268
rename_func(old, new)
270
except (IOError, OSError) as e:
271
# source and target may be aliases of each other (e.g. on a
272
# case-insensitive filesystem), so we may have accidentally renamed
273
# source by when we tried to rename target
274
if (file_existed and e.errno in (None, errno.ENOENT)
275
and old.lower() == new.lower()):
276
# source and target are the same file on a case-insensitive
277
# filesystem, so we don't generate an exception
271
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# If the file used to exist, rename it back into place
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unlink_func(tmp_name)
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rename_func(tmp_name, new)
277
if failure_exc is not None:
278
raise failure_exc[0], failure_exc[1], failure_exc[2]
281
291
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
282
292
# choke on a Unicode string containing a relative path if
283
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
285
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
286
295
def _posix_abspath(path):
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# jam 20060426 rather than encoding to fsencoding
288
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# copy posixpath.abspath, but use os.getcwdu instead
289
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if not posixpath.isabs(path):
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path = posixpath.join(getcwd(), path)
291
return posixpath.normpath(path)
300
return _posix_normpath(path)
294
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def _posix_realpath(path):
295
304
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
307
def _posix_normpath(path):
308
path = posixpath.normpath(path)
309
# Bug 861008: posixpath.normpath() returns a path normalized according to
310
# the POSIX standard, which stipulates (for compatibility reasons) that two
311
# leading slashes must not be simplified to one, and only if there are 3 or
312
# more should they be simplified as one. So we treat the leading 2 slashes
313
# as a special case here by simply removing the first slash, as we consider
314
# that breaking POSIX compatibility for this obscure feature is acceptable.
315
# This is not a paranoid precaution, as we notably get paths like this when
316
# the repo is hosted at the root of the filesystem, i.e. in "/".
317
if path.startswith('//'):
322
def _posix_path_from_environ(key):
323
"""Get unicode path from `key` in environment or None if not present
325
Note that posix systems use arbitrary byte strings for filesystem objects,
326
so a path that raises BadFilenameEncoding here may still be accessible.
328
val = os.environ.get(key, None)
329
if PY3 or val is None:
332
return val.decode(_fs_enc)
333
except UnicodeDecodeError:
334
# GZ 2011-12-12:Ideally want to include `key` in the exception message
335
raise errors.BadFilenameEncoding(val, _fs_enc)
338
def _posix_get_home_dir():
339
"""Get the home directory of the current user as a unicode path"""
340
path = posixpath.expanduser("~")
342
return path.decode(_fs_enc)
343
except AttributeError:
345
except UnicodeDecodeError:
346
raise errors.BadFilenameEncoding(path, _fs_enc)
349
def _posix_getuser_unicode():
350
"""Get username from environment or password database as unicode"""
351
name = getpass.getuser()
354
user_encoding = get_user_encoding()
356
return name.decode(user_encoding)
357
except UnicodeDecodeError:
358
raise errors.BzrError("Encoding of username %r is unsupported by %s "
359
"application locale." % (name, user_encoding))
298
362
def _win32_fixdrive(path):
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"""Force drive letters to be consistent.
304
368
running python.exe under cmd.exe return capital C:\\
305
369
running win32 python inside a cygwin shell returns lowercase c:\\
307
drive, path = _nt_splitdrive(path)
371
drive, path = ntpath.splitdrive(path)
308
372
return drive.upper() + path
311
375
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('\\', '/'))
376
# Real ntpath.abspath doesn't have a problem with a unicode cwd
377
return _win32_fixdrive(ntpath.abspath(unicode(path)).replace('\\', '/'))
343
380
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('\\', '/'))
381
# Real ntpath.realpath doesn't have a problem with a unicode cwd
382
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
348
385
def _win32_pathjoin(*args):
349
return _nt_join(*args).replace('\\', '/')
386
return ntpath.join(*args).replace('\\', '/')
352
389
def _win32_normpath(path):
353
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
390
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
356
393
def _win32_getcwd():
357
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
394
return _win32_fixdrive(_getcwd().replace('\\', '/'))
360
397
def _win32_mkdtemp(*args, **kwargs):
361
398
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
401
def _win32_rename(old, new):
373
402
"""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
419
def _mac_getcwd():
401
return unicodedata.normalize('NFC', os.getcwdu())
420
return unicodedata.normalize('NFC', _getcwd())
423
def _rename_wrap_exception(rename_func):
424
"""Adds extra information to any exceptions that come from rename().
426
The exception has an updated message and 'old_filename' and 'new_filename'
430
def _rename_wrapper(old, new):
432
rename_func(old, new)
434
detailed_error = OSError(e.errno, e.strerror +
435
" [occurred when renaming '%s' to '%s']" %
437
detailed_error.old_filename = old
438
detailed_error.new_filename = new
441
return _rename_wrapper
444
if sys.version_info > (3,):
450
# Default rename wraps os.rename()
451
rename = _rename_wrap_exception(os.rename)
404
453
# Default is to just use the python builtins, but these can be rebound on
405
454
# particular platforms.
406
455
abspath = _posix_abspath
407
456
realpath = _posix_realpath
408
457
pathjoin = os.path.join
409
normpath = os.path.normpath
410
rename = _wrapped_rename # overridden below on win32
458
normpath = _posix_normpath
459
path_from_environ = _posix_path_from_environ
460
_get_home_dir = _posix_get_home_dir
461
getuser_unicode = _posix_getuser_unicode
412
463
dirname = os.path.dirname
413
464
basename = os.path.basename
414
465
split = os.path.split
415
466
splitext = os.path.splitext
416
# These were already imported into local scope
467
# These were already lazily imported into local scope
417
468
# mkdtemp = tempfile.mkdtemp
418
469
# rmtree = shutil.rmtree
420
477
MIN_ABS_PATHLENGTH = 1
423
480
if sys.platform == 'win32':
424
if win32utils.winver == 'Windows 98':
425
abspath = _win98_abspath
427
abspath = _win32_abspath
481
abspath = _win32_abspath
428
482
realpath = _win32_realpath
429
483
pathjoin = _win32_pathjoin
430
484
normpath = _win32_normpath
431
485
getcwd = _win32_getcwd
432
486
mkdtemp = _win32_mkdtemp
433
rename = _win32_rename
487
rename = _rename_wrap_exception(_win32_rename)
489
from . import _walkdirs_win32
493
lstat = _walkdirs_win32.lstat
494
fstat = _walkdirs_win32.fstat
495
wrap_stat = _walkdirs_win32.wrap_stat
435
497
MIN_ABS_PATHLENGTH = 3
472
537
On my standard US Windows XP, the preferred encoding is
473
538
cp1252, but the console is cp437
540
:param trace: If True trace the selected encoding via mutter().
475
from bzrlib.trace import mutter
542
from .trace import mutter
476
543
output_encoding = getattr(sys.stdout, 'encoding', None)
477
544
if not output_encoding:
478
545
input_encoding = getattr(sys.stdin, 'encoding', None)
479
546
if not input_encoding:
480
547
output_encoding = get_user_encoding()
481
mutter('encoding stdout as osutils.get_user_encoding() %r',
549
mutter('encoding stdout as osutils.get_user_encoding() %r',
484
552
output_encoding = input_encoding
485
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
554
mutter('encoding stdout as sys.stdin encoding %r',
487
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
558
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
488
559
if output_encoding == 'cp0':
489
560
# invalid encoding (cp0 means 'no codepage' on Windows)
490
561
output_encoding = get_user_encoding()
491
mutter('cp0 is invalid encoding.'
563
mutter('cp0 is invalid encoding.'
492
564
' encoding stdout as osutils.get_user_encoding() %r',
496
568
codecs.lookup(output_encoding)
497
569
except LookupError:
498
sys.stderr.write('bzr: warning:'
570
sys.stderr.write('brz: warning:'
499
571
' unknown terminal encoding %s.\n'
500
572
' Using encoding %s instead.\n'
501
573
% (output_encoding, get_user_encoding())
799
882
(date_fmt, tt, offset_str) = \
800
883
_format_date(t, offset, timezone, date_fmt, show_offset)
801
884
date_str = time.strftime(date_fmt, tt)
802
if not isinstance(date_str, unicode):
885
if not isinstance(date_str, text_type):
803
886
date_str = date_str.decode(get_user_encoding(), 'replace')
804
887
return date_str + offset_str
807
890
def _format_date(t, offset, timezone, date_fmt, show_offset):
808
891
if timezone == 'utc':
811
894
elif timezone == 'original':
812
895
if offset is None:
814
tt = time.gmtime(t + offset)
897
tt = gmtime(t + offset)
815
898
elif timezone == 'local':
816
899
tt = time.localtime(t)
817
900
offset = local_time_offset(t)
883
966
"""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
967
return os.fstat(f.fileno())[stat.ST_SIZE]
970
# Alias os.urandom to support platforms (which?) without /dev/urandom and
971
# override if it doesn't work. Avoid checking on windows where there is
972
# significant initialisation cost that can be avoided for some bzr calls.
974
rand_bytes = os.urandom
976
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):
979
except NotImplementedError:
900
980
# not well seeded, but better than nothing
901
981
def rand_bytes(n):
971
1054
implementation should be loaded instead::
974
>>> import bzrlib._fictional_extension_pyx
1057
>>> import breezy._fictional_extension_pyx
975
1058
>>> except ImportError, e:
976
>>> bzrlib.osutils.failed_to_load_extension(e)
977
>>> import bzrlib._fictional_extension_py
1059
>>> breezy.osutils.failed_to_load_extension(e)
1060
>>> import breezy._fictional_extension_py
979
1062
# NB: This docstring is just an example, not a doctest, because doctest
980
1063
# currently can't cope with the use of lazy imports in this namespace --
983
1066
# This currently doesn't report the failure at the time it occurs, because
984
1067
# they tend to happen very early in startup when we can't check config
985
1068
# files etc, and also we want to report all failures but not spam the user
986
1069
# with 10 warnings.
987
from bzrlib import trace
988
1070
exception_str = str(exception)
989
1071
if exception_str not in _extension_load_failures:
990
1072
trace.mutter("failed to load compiled extension: %s" % exception_str)
994
1076
def report_extension_load_failures():
995
1077
if not _extension_load_failures:
997
from bzrlib.config import GlobalConfig
998
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
1079
if config.GlobalConfig().suppress_warning('missing_extensions'):
1000
1081
# the warnings framework should by default show this only once
1001
from bzrlib.trace import warning
1082
from .trace import warning
1003
"bzr: warning: some compiled extensions could not be loaded; "
1004
"see <https://answers.launchpad.net/bzr/+faq/703>")
1084
"brz: warning: some compiled extensions could not be loaded; "
1085
"see ``brz help missing-extensions``")
1005
1086
# we no longer show the specific missing extensions here, because it makes
1006
1087
# the message too long and scary - see
1007
1088
# https://bugs.launchpad.net/bzr/+bug/430529
1011
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
1012
except ImportError, e:
1092
from ._chunks_to_lines_pyx import chunks_to_lines
1093
except ImportError as e:
1013
1094
failed_to_load_extension(e)
1014
from bzrlib._chunks_to_lines_py import chunks_to_lines
1095
from ._chunks_to_lines_py import chunks_to_lines
1017
1098
def split_lines(s):
1285
1383
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):
1386
def safe_revision_id(unicode_or_utf8_string):
1294
1387
"""Revision ids should now be utf8, but at one point they were unicode.
1296
1389
: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
1391
:return: None or a utf8 revision id.
1301
1393
if (unicode_or_utf8_string is None
1302
or unicode_or_utf8_string.__class__ == str):
1394
or unicode_or_utf8_string.__class__ == bytes):
1303
1395
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):
1396
raise TypeError('Unicode revision ids are no longer supported. '
1397
'Revision id generators should be creating utf8 revision '
1401
def safe_file_id(unicode_or_utf8_string):
1315
1402
"""File ids should now be utf8, but at one point they were unicode.
1317
1404
This is the same as safe_utf8, except it uses the cached encode functions
1425
1515
None is returned if the width can't established precisely.
1428
- if BZR_COLUMNS is set, returns its value
1518
- if BRZ_COLUMNS is set, returns its value
1429
1519
- if there is no controlling terminal, returns None
1520
- query the OS, if the queried size has changed since the last query,
1430
1522
- if COLUMNS is set, returns its value,
1523
- if the OS has a value (even though it's never changed), return its value.
1432
1525
From there, we need to query the OS to get the size of the controlling
1528
On Unices we query the OS by:
1436
1529
- get termios.TIOCGWINSZ
1437
1530
- if an error occurs or a negative value is obtained, returns None
1532
On Windows we query the OS by:
1441
1533
- win32utils.get_console_size() decides,
1442
1534
- returns None on error (provided default value)
1536
# Note to implementors: if changing the rules for determining the width,
1537
# make sure you've considered the behaviour in these cases:
1538
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1539
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1541
# - (add more interesting cases here, if you find any)
1542
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1543
# but we don't want to register a signal handler because it is impossible
1544
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1545
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1546
# 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
1549
# If BRZ_COLUMNS is set, take it, user is always right
1550
# Except if they specified 0 in which case, impose no limit here
1447
return int(os.environ['BZR_COLUMNS'])
1552
width = int(os.environ['BRZ_COLUMNS'])
1448
1553
except (KeyError, ValueError):
1555
if width is not None:
1451
1561
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.
1562
if isatty is None or not isatty():
1563
# 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))
1567
width, height = os_size = _terminal_size(None, None)
1568
global _first_terminal_size, _terminal_size_state
1569
if _terminal_size_state == 'no_data':
1570
_first_terminal_size = os_size
1571
_terminal_size_state = 'unchanged'
1572
elif (_terminal_size_state == 'unchanged' and
1573
_first_terminal_size != os_size):
1574
_terminal_size_state = 'changed'
1576
# If the OS claims to know how wide the terminal is, and this value has
1577
# ever changed, use that.
1578
if _terminal_size_state == 'changed':
1579
if width is not None and width > 0:
1582
# If COLUMNS is set, use it.
1460
1584
return int(os.environ['COLUMNS'])
1461
1585
except (KeyError, ValueError):
1464
width, height = _terminal_size(None, None)
1466
# Consider invalid values as meaning no width
1588
# Finally, use an unchanged size from the OS, if we have one.
1589
if _terminal_size_state == 'unchanged':
1590
if width is not None and width > 0:
1593
# The width could not be determined.
1472
1597
def _win32_terminal_size(width, height):
1499
1624
_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
1627
def supports_executable():
1528
1628
return sys.platform != "win32"
1713
1813
global _selected_dir_reader
1714
1814
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
1815
if sys.platform == "win32":
1723
from bzrlib._walkdirs_win32 import Win32ReadDir
1817
from ._walkdirs_win32 import Win32ReadDir
1724
1818
_selected_dir_reader = Win32ReadDir()
1725
1819
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
1821
elif _fs_enc in ('utf-8', 'ascii'):
1730
from bzrlib._readdir_pyx import UTF8DirReader
1823
from ._readdir_pyx import UTF8DirReader
1731
1824
_selected_dir_reader = UTF8DirReader()
1732
except ImportError, e:
1825
except ImportError as e:
1733
1826
failed_to_load_extension(e)
1887
1983
_cached_user_encoding = None
1890
def get_user_encoding(use_cache=True):
1986
def get_user_encoding():
1891
1987
"""Find out what the preferred user encoding is.
1893
1989
This is generally the encoding that is used for command line parameters
1894
1990
and file contents. This may be different from the terminal encoding
1895
1991
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
1993
:return: A string defining the preferred user encoding
1903
1995
global _cached_user_encoding
1904
if _cached_user_encoding is not None and use_cache:
1996
if _cached_user_encoding is not None:
1905
1997
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'
1999
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2000
# Use the existing locale settings and call nl_langinfo directly
2001
# rather than going through getpreferredencoding. This avoids
2002
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2003
# possibility of the setlocale call throwing an error.
2004
user_encoding = locale.nl_langinfo(locale.CODESET)
2006
# GZ 2011-12-19: On windows could call GetACP directly instead.
2007
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:'
2010
user_encoding = codecs.lookup(user_encoding).name
2012
if user_encoding not in ("", "cp0"):
2013
sys.stderr.write('brz: warning:'
1951
2014
' unknown encoding %s.'
1952
2015
' Continuing with ascii encoding.\n'
1953
2016
% user_encoding
1955
user_encoding = 'ascii'
1958
_cached_user_encoding = user_encoding
2018
user_encoding = 'ascii'
2020
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2021
if user_encoding == 'ascii':
2022
if sys.platform == 'darwin':
2023
# OSX is special-cased in Python to have a UTF-8 filesystem
2024
# encoding and previously had LANG set here if not present.
2025
user_encoding = 'utf-8'
2026
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2027
# for some other posix platforms as well.
2029
_cached_user_encoding = user_encoding
1960
2030
return user_encoding
2033
def get_diff_header_encoding():
2034
return get_terminal_encoding()
1963
2037
def get_host_name():
1964
2038
"""Return the current unicode host name.
2029
2112
def send_all(sock, bytes, report_activity=None):
2030
2113
"""Send all bytes on a socket.
2032
2115
Breaks large blocks in smaller chunks to avoid buffering limitations on
2033
2116
some platforms, and catches EINTR which may be thrown if the send is
2034
2117
interrupted by a signal.
2036
2119
This is preferred to socket.sendall(), because it avoids portability bugs
2037
2120
and provides activity reporting.
2039
2122
:param report_activity: Call this as bytes are read, see
2040
2123
Transport._report_activity
2043
2126
byte_count = len(bytes)
2127
view = memoryview(bytes)
2044
2128
while sent_total < byte_count:
2046
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2047
except socket.error, e:
2130
sent = sock.send(view[sent_total:sent_total+MAX_SOCKET_CHUNK])
2131
except (socket.error, IOError) as e:
2132
if e.args[0] in _end_of_stream_errors:
2133
raise errors.ConnectionReset(
2134
"Error trying to write to socket", e)
2048
2135
if e.args[0] != errno.EINTR:
2139
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2051
2141
sent_total += sent
2052
report_activity(sent, 'write')
2142
if report_activity is not None:
2143
report_activity(sent, 'write')
2146
def connect_socket(address):
2147
# Slight variation of the socket.create_connection() function (provided by
2148
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2149
# provide it for previous python versions. Also, we don't use the timeout
2150
# parameter (provided by the python implementation) so we don't implement
2152
err = socket.error('getaddrinfo returns an empty list')
2153
host, port = address
2154
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2155
af, socktype, proto, canonname, sa = res
2158
sock = socket.socket(af, socktype, proto)
2162
except socket.error as err:
2163
# 'err' is now the most recent error
2164
if sock is not None:
2055
2169
def dereference_path(path):
2083
2197
If and when pkg_resources becomes a standard library, this routine
2084
2198
can delegate to it.
2086
# Check package name is within bzrlib
2087
if package == "bzrlib":
2200
# Check package name is within breezy
2201
if package == "breezy":
2088
2202
resource_relpath = resource_name
2089
elif package.startswith("bzrlib."):
2090
package = package[len("bzrlib."):].replace('.', os.sep)
2203
elif package.startswith("breezy."):
2204
package = package[len("breezy."):].replace('.', os.sep)
2091
2205
resource_relpath = pathjoin(package, resource_name)
2093
raise errors.BzrError('resource package %s not in bzrlib' % package)
2207
raise errors.BzrError('resource package %s not in breezy' % package)
2095
2209
# Map the resource to a file and read its contents
2096
base = dirname(bzrlib.__file__)
2210
base = dirname(breezy.__file__)
2097
2211
if getattr(sys, 'frozen', None): # bzr.exe
2098
2212
base = abspath(pathjoin(base, '..', '..'))
2099
filename = pathjoin(base, resource_relpath)
2100
return open(filename, 'rU').read()
2213
f = file(pathjoin(base, resource_relpath), "rU")
2103
2219
def file_kind_from_stat_mode_thunk(mode):
2104
2220
global file_kind_from_stat_mode
2105
2221
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2107
from bzrlib._readdir_pyx import UTF8DirReader
2223
from ._readdir_pyx import UTF8DirReader
2108
2224
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2109
except ImportError, e:
2225
except ImportError as e:
2110
2226
# This is one time where we won't warn that an extension failed to
2111
2227
# load. The extension is never available on Windows anyway.
2112
from bzrlib._readdir_py import (
2228
from ._readdir_py import (
2113
2229
_kind_from_mode as file_kind_from_stat_mode
2115
2231
return file_kind_from_stat_mode(mode)
2116
2232
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2119
def file_kind(f, _lstat=os.lstat):
2234
def file_stat(f, _lstat=os.lstat):
2121
return file_kind_from_stat_mode(_lstat(f).st_mode)
2238
except OSError as e:
2123
2239
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2124
2240
raise errors.NoSuchFile(f)
2243
def file_kind(f, _lstat=os.lstat):
2244
stat_value = file_stat(f, _lstat)
2245
return file_kind_from_stat_mode(stat_value.st_mode)
2128
2247
def until_no_eintr(f, *a, **kw):
2129
2248
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2131
2250
WARNING: you must be certain that it is safe to retry the call repeatedly
2132
2251
if EINTR does occur. This is typically only true for low-level operations
2133
2252
like os.read. If in any doubt, don't use this.
2135
2254
Keep in mind that this is not a complete solution to EINTR. There is
2136
2255
probably code in the Python standard library and other dependencies that
2137
2256
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
2257
that signal). So this function can reduce the impact for IO that breezy
2139
2258
directly controls, but it is not a complete solution.
2141
2260
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2144
2263
return f(*a, **kw)
2145
except (IOError, OSError), e:
2264
except (IOError, OSError) as e:
2146
2265
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
2270
if sys.platform == "win32":
2177
2273
return msvcrt.getch()
2182
2278
fd = sys.stdin.fileno()
2183
2279
settings = termios.tcgetattr(fd)
2188
2284
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2192
if sys.platform == 'linux2':
2287
if sys.platform.startswith('linux'):
2193
2288
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
2290
return os.sysconf('SC_NPROCESSORS_ONLN')
2291
except (ValueError, OSError, AttributeError):
2200
2293
elif sys.platform == 'darwin':
2201
2294
def _local_concurrency():
2202
2295
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2203
2296
stdout=subprocess.PIPE).communicate()[0]
2204
elif sys.platform[0:7] == 'freebsd':
2297
elif "bsd" in sys.platform:
2205
2298
def _local_concurrency():
2206
2299
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2207
2300
stdout=subprocess.PIPE).communicate()[0]
2305
2403
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." % \
2406
def available_backup_name(base, exists):
2407
"""Find a non-existing backup file name.
2409
This will *not* create anything, this only return a 'free' entry. This
2410
should be used for checking names in a directory below a locked
2411
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2412
Leap) and generally discouraged.
2414
:param base: The base name.
2416
:param exists: A callable returning True if the path parameter exists.
2419
name = "%s.~%d~" % (base, counter)
2422
name = "%s.~%d~" % (base, counter)
2426
def set_fd_cloexec(fd):
2427
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2428
support for this is not available.
2432
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2433
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2434
except (ImportError, AttributeError):
2435
# Either the fcntl module or specific constants are not present
2439
def find_executable_on_path(name):
2440
"""Finds an executable on the PATH.
2442
On Windows, this will try to append each extension in the PATHEXT
2443
environment variable to the name, if it cannot be found with the name
2446
:param name: The base name of the executable.
2447
:return: The path to the executable found or None.
2449
if sys.platform == 'win32':
2450
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2451
exts = [ext.lower() for ext in exts]
2452
base, ext = os.path.splitext(name)
2454
if ext.lower() not in exts:
2460
path = os.environ.get('PATH')
2461
if path is not None:
2462
path = path.split(os.pathsep)
2465
f = os.path.join(d, name) + ext
2466
if os.access(f, os.X_OK):
2468
if sys.platform == 'win32':
2469
app_path = win32utils.get_app_path(name)
2470
if app_path != name:
2475
def _posix_is_local_pid_dead(pid):
2476
"""True if pid doesn't correspond to live process on this machine"""
2478
# Special meaning of unix kill: just check if it's there.
2480
except OSError as e:
2481
if e.errno == errno.ESRCH:
2482
# On this machine, and really not found: as sure as we can be
2485
elif e.errno == errno.EPERM:
2486
# exists, though not ours
2489
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2490
# Don't really know.
2493
# Exists and our process: not dead.
2496
if sys.platform == "win32":
2497
is_local_pid_dead = win32utils.is_local_pid_dead
2499
is_local_pid_dead = _posix_is_local_pid_dead
2501
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2502
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2503
if getattr(errno, name, None) is not None]
2506
def fdatasync(fileno):
2507
"""Flush file contents to disk if possible.
2509
:param fileno: Integer OS file handle.
2510
:raises TransportNotPossible: If flushing to disk is not possible.
2512
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2516
except IOError as e:
2517
# See bug #1075108, on some platforms fdatasync exists, but can
2518
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2519
# and reduce the chance of corruption-on-powerloss situations. It
2520
# is not a mandatory call, so it is ok to suppress failures.
2521
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2522
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2526
def ensure_empty_directory_exists(path, exception_class):
2527
"""Make sure a local directory exists and is empty.
2529
If it does not exist, it is created. If it exists and is not empty, an
2530
instance of exception_class is raised.
2534
except OSError as e:
2535
if e.errno != errno.EEXIST:
2537
if os.listdir(path) != []:
2538
raise exception_class(path)
2541
def is_environment_error(evalue):
2542
"""True if exception instance is due to a process environment issue
2544
This includes OSError and IOError, but also other errors that come from
2545
the operating system or core libraries but are not subclasses of those.
2547
if isinstance(evalue, (EnvironmentError, select.error)):
2549
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):