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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S_ISCHR, S_ISBLK, S_ISFIFO, S_ISSOCK)
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from .lazy_import import lazy_import
27
from bzrlib.lazy_import import lazy_import
28
28
lazy_import(globals(), """
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from datetime import datetime
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from ntpath import (abspath as _nt_abspath,
33
normpath as _nt_normpath,
34
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
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# and need the former on windows
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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 mkdtemp
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from tempfile import (
52
from breezy.i18n import gettext
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from bzrlib.symbol_versioning import (
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# sha and md5 modules are deprecated in python2.6 but hashlib is available as
66
if sys.version_info < (2, 5):
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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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# Cross platform wall-clock time functionality with decent resolution.
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# On Linux ``time.clock`` returns only CPU time. On Windows, ``time.time()``
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# only has a resolution of ~15ms. Note that ``time.clock()`` is not
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# synchronized with ``time.time()``, this is only meant to be used to find
86
# delta times by subtracting from another call to this function.
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timer_func = time.time
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if sys.platform == 'win32':
89
timer_func = time.clock
73
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# On win32, O_BINARY is used to indicate the file should
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92
# be opened in binary mode, rather than text mode.
81
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O_NOINHERIT = getattr(os, 'O_NOINHERIT', 0)
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class UnsupportedTimezoneFormat(errors.BzrError):
86
_fmt = ('Unsupported timezone format "%(timezone)s", '
87
'options are "utc", "original", "local".')
89
def __init__(self, timezone):
90
self.timezone = timezone
93
102
def get_unicode_argv():
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104
user_encoding = get_user_encoding()
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return [a.decode(user_encoding) for a in sys.argv[1:]]
99
106
except UnicodeDecodeError:
100
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
101
"application locale.").format(a, user_encoding))
107
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
104
111
def make_readonly(filename):
105
112
"""Make a filename read-only."""
106
113
mod = os.lstat(filename).st_mode
107
114
if not stat.S_ISLNK(mod):
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chmod_if_possible(filename, mod)
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os.chmod(filename, mod)
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119
def make_writable(filename):
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mod = os.lstat(filename).st_mode
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121
if not stat.S_ISLNK(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
122
# https://bugs.launchpad.net/bzr/+bug/606537
124
# It is probably faster to just do the chmod, rather than
125
# doing a stat, and then trying to compare
126
os.chmod(filename, mode)
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except (IOError, OSError) as e:
128
# Permission/access denied seems to commonly happen on smbfs; there's
129
# probably no point warning about it.
130
# <https://bugs.launchpad.net/bzr/+bug/606537>
131
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
132
trace.mutter("ignore error on chmod of %r: %r" % (
123
os.chmod(filename, mod)
138
126
def minimum_path_selection(paths):
252
235
file_existed = False
254
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rename_func(new, tmp_name)
255
except (errors.NoSuchFile,):
238
except (errors.NoSuchFile,), e:
258
241
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
259
242
# function raises an IOError with errno is None when a rename fails.
260
243
# This then gets caught here.
261
244
if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
263
except Exception as e:
264
247
if (getattr(e, 'errno', None) is None
265
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
248
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
268
251
file_existed = True
272
# This may throw an exception, in which case success will
274
rename_func(old, new)
276
except (IOError, OSError) as e:
277
# source and target may be aliases of each other (e.g. on a
278
# case-insensitive filesystem), so we may have accidentally renamed
279
# source by when we tried to rename target
280
if (file_existed and e.errno in (None, errno.ENOENT)
257
# This may throw an exception, in which case success will
259
rename_func(old, new)
261
except (IOError, OSError), e:
262
# source and target may be aliases of each other (e.g. on a
263
# case-insensitive filesystem), so we may have accidentally renamed
264
# source by when we tried to rename target
265
failure_exc = sys.exc_info()
266
if (file_existed and e.errno in (None, errno.ENOENT)
281
267
and old.lower() == new.lower()):
282
# source and target are the same file on a case-insensitive
283
# filesystem, so we don't generate an exception
268
# source and target are the same file on a case-insensitive
269
# filesystem, so we don't generate an exception
289
273
# If the file used to exist, rename it back into place
292
276
unlink_func(tmp_name)
294
278
rename_func(tmp_name, new)
279
if failure_exc is not None:
280
raise failure_exc[0], failure_exc[1], failure_exc[2]
297
283
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
298
284
# choke on a Unicode string containing a relative path if
299
285
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
287
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
301
288
def _posix_abspath(path):
302
289
# jam 20060426 rather than encoding to fsencoding
303
290
# copy posixpath.abspath, but use os.getcwdu instead
304
291
if not posixpath.isabs(path):
305
292
path = posixpath.join(getcwd(), path)
306
return _posix_normpath(path)
293
return posixpath.normpath(path)
309
296
def _posix_realpath(path):
310
297
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
313
def _posix_normpath(path):
314
path = posixpath.normpath(path)
315
# Bug 861008: posixpath.normpath() returns a path normalized according to
316
# the POSIX standard, which stipulates (for compatibility reasons) that two
317
# leading slashes must not be simplified to one, and only if there are 3 or
318
# more should they be simplified as one. So we treat the leading 2 slashes
319
# as a special case here by simply removing the first slash, as we consider
320
# that breaking POSIX compatibility for this obscure feature is acceptable.
321
# This is not a paranoid precaution, as we notably get paths like this when
322
# the repo is hosted at the root of the filesystem, i.e. in "/".
323
if path.startswith('//'):
328
def _posix_path_from_environ(key):
329
"""Get unicode path from `key` in environment or None if not present
331
Note that posix systems use arbitrary byte strings for filesystem objects,
332
so a path that raises BadFilenameEncoding here may still be accessible.
334
val = os.environ.get(key, None)
335
if PY3 or val is None:
338
return val.decode(_fs_enc)
339
except UnicodeDecodeError:
340
# GZ 2011-12-12:Ideally want to include `key` in the exception message
341
raise errors.BadFilenameEncoding(val, _fs_enc)
344
def _posix_get_home_dir():
345
"""Get the home directory of the current user as a unicode path"""
346
path = posixpath.expanduser("~")
348
return path.decode(_fs_enc)
349
except AttributeError:
351
except UnicodeDecodeError:
352
raise errors.BadFilenameEncoding(path, _fs_enc)
355
def _posix_getuser_unicode():
356
"""Get username from environment or password database as unicode"""
357
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))
368
300
def _win32_fixdrive(path):
369
301
"""Force drive letters to be consistent.
374
306
running python.exe under cmd.exe return capital C:\\
375
307
running win32 python inside a cygwin shell returns lowercase c:\\
377
drive, path = ntpath.splitdrive(path)
309
drive, path = _nt_splitdrive(path)
378
310
return drive.upper() + path
381
313
def _win32_abspath(path):
382
# Real ntpath.abspath doesn't have a problem with a unicode cwd
383
return _win32_fixdrive(ntpath.abspath(path).replace('\\', '/'))
314
# Real _nt_abspath doesn't have a problem with a unicode cwd
315
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
318
def _win98_abspath(path):
319
"""Return the absolute version of a path.
320
Windows 98 safe implementation (python reimplementation
321
of Win32 API function GetFullPathNameW)
326
# \\HOST\path => //HOST/path
327
# //HOST/path => //HOST/path
328
# path => C:/cwd/path
331
# check for absolute path
332
drive = _nt_splitdrive(path)[0]
333
if drive == '' and path[:2] not in('//','\\\\'):
335
# we cannot simply os.path.join cwd and path
336
# because os.path.join('C:','/path') produce '/path'
337
# and this is incorrect
338
if path[:1] in ('/','\\'):
339
cwd = _nt_splitdrive(cwd)[0]
341
path = cwd + '\\' + path
342
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
386
345
def _win32_realpath(path):
387
# Real ntpath.realpath doesn't have a problem with a unicode cwd
388
return _win32_fixdrive(ntpath.realpath(path).replace('\\', '/'))
346
# Real _nt_realpath doesn't have a problem with a unicode cwd
347
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
391
350
def _win32_pathjoin(*args):
392
return ntpath.join(*args).replace('\\', '/')
351
return _nt_join(*args).replace('\\', '/')
395
354
def _win32_normpath(path):
396
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
355
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
399
358
def _win32_getcwd():
400
return _win32_fixdrive(_getcwd().replace('\\', '/'))
359
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
403
362
def _win32_mkdtemp(*args, **kwargs):
425
384
def _mac_getcwd():
426
return unicodedata.normalize('NFC', _getcwd())
429
def _rename_wrap_exception(rename_func):
430
"""Adds extra information to any exceptions that come from rename().
432
The exception has an updated message and 'old_filename' and 'new_filename'
436
def _rename_wrapper(old, new):
438
rename_func(old, new)
440
detailed_error = OSError(e.errno, e.strerror +
441
" [occurred when renaming '%s' to '%s']" %
443
detailed_error.old_filename = old
444
detailed_error.new_filename = new
447
return _rename_wrapper
450
if sys.version_info > (3,):
456
# Default rename wraps os.rename()
457
rename = _rename_wrap_exception(os.rename)
385
return unicodedata.normalize('NFC', os.getcwdu())
459
388
# Default is to just use the python builtins, but these can be rebound on
460
389
# particular platforms.
461
390
abspath = _posix_abspath
462
391
realpath = _posix_realpath
463
392
pathjoin = os.path.join
464
normpath = _posix_normpath
465
path_from_environ = _posix_path_from_environ
466
_get_home_dir = _posix_get_home_dir
467
getuser_unicode = _posix_getuser_unicode
393
normpath = os.path.normpath
469
396
dirname = os.path.dirname
470
397
basename = os.path.basename
471
398
split = os.path.split
472
399
splitext = os.path.splitext
473
# These were already lazily imported into local scope
400
# These were already imported into local scope
474
401
# mkdtemp = tempfile.mkdtemp
475
402
# rmtree = shutil.rmtree
484
404
MIN_ABS_PATHLENGTH = 1
487
407
if sys.platform == 'win32':
488
abspath = _win32_abspath
408
if win32utils.winver == 'Windows 98':
409
abspath = _win98_abspath
411
abspath = _win32_abspath
489
412
realpath = _win32_realpath
490
413
pathjoin = _win32_pathjoin
491
414
normpath = _win32_normpath
492
415
getcwd = _win32_getcwd
493
416
mkdtemp = _win32_mkdtemp
494
rename = _rename_wrap_exception(_win32_rename)
496
from . import _walkdirs_win32
500
lstat = _walkdirs_win32.lstat
501
fstat = _walkdirs_win32.fstat
502
wrap_stat = _walkdirs_win32.wrap_stat
417
rename = _win32_rename
504
419
MIN_ABS_PATHLENGTH = 3
542
456
On my standard US Windows XP, the preferred encoding is
543
457
cp1252, but the console is cp437
545
:param trace: If True trace the selected encoding via mutter().
547
from .trace import mutter
459
from bzrlib.trace import mutter
548
460
output_encoding = getattr(sys.stdout, 'encoding', None)
549
461
if not output_encoding:
550
462
input_encoding = getattr(sys.stdin, 'encoding', None)
551
463
if not input_encoding:
552
464
output_encoding = get_user_encoding()
554
mutter('encoding stdout as osutils.get_user_encoding() %r',
465
mutter('encoding stdout as osutils.get_user_encoding() %r',
557
468
output_encoding = input_encoding
559
mutter('encoding stdout as sys.stdin encoding %r',
469
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
563
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
471
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
564
472
if output_encoding == 'cp0':
565
473
# invalid encoding (cp0 means 'no codepage' on Windows)
566
474
output_encoding = get_user_encoding()
568
mutter('cp0 is invalid encoding.'
569
' encoding stdout as osutils.get_user_encoding() %r',
475
mutter('cp0 is invalid encoding.'
476
' encoding stdout as osutils.get_user_encoding() %r',
573
480
codecs.lookup(output_encoding)
574
481
except LookupError:
575
sys.stderr.write('brz: warning:'
482
sys.stderr.write('bzr: warning:'
576
483
' unknown terminal encoding %s.\n'
577
484
' Using encoding %s instead.\n'
578
485
% (output_encoding, get_user_encoding())
580
487
output_encoding = get_user_encoding()
582
489
return output_encoding
975
863
return '%d hours, %d minute%s %s' % (hours, minutes,
976
864
plural_minutes, direction)
980
867
"""Return size of given open file."""
981
return os.fstat(f.fileno())[stat.ST_SIZE]
984
# Alias os.urandom to support platforms (which?) without /dev/urandom and
985
# override if it doesn't work. Avoid checking on windows where there is
986
# significant initialisation cost that can be avoided for some bzr calls.
988
rand_bytes = os.urandom
990
if rand_bytes.__module__ != "nt":
868
return os.fstat(f.fileno())[ST_SIZE]
871
# Define rand_bytes based on platform.
873
# Python 2.4 and later have os.urandom,
874
# but it doesn't work on some arches
876
rand_bytes = os.urandom
877
except (NotImplementedError, AttributeError):
878
# If python doesn't have os.urandom, or it doesn't work,
879
# then try to first pull random data from /dev/urandom
993
except NotImplementedError:
881
rand_bytes = file('/dev/urandom', 'rb').read
882
# Otherwise, use this hack as a last resort
883
except (IOError, OSError):
994
884
# not well seeded, but better than nothing
995
885
def rand_bytes(n):
1014
902
for raw_byte in rand_bytes(num):
1016
s += ALNUM[ord(raw_byte) % 36]
1018
s += ALNUM[raw_byte % 36]
903
s += ALNUM[ord(raw_byte) % 36]
1022
# TODO: We could later have path objects that remember their list
1023
# decomposition (might be too tricksy though.)
907
## TODO: We could later have path objects that remember their list
908
## decomposition (might be too tricksy though.)
1025
910
def splitpath(p):
1026
911
"""Turn string into list of parts."""
1027
use_bytes = isinstance(p, bytes)
1028
if os.path.sep == '\\':
1029
# split on either delimiter because people might use either on
1032
ps = re.split(b'[\\\\/]', p)
1034
ps = re.split(r'[\\/]', p)
1043
current_empty_dir = (b'.', b'')
1046
current_empty_dir = ('.', '')
912
# split on either delimiter because people might use either on
914
ps = re.split(r'[\\/]', p)
1051
raise errors.BzrError(gettext("sorry, %r not allowed in path") % f)
1052
elif f in current_empty_dir:
919
raise errors.BzrError("sorry, %r not allowed in path" % f)
920
elif (f == '.') or (f == ''):
1109
978
def report_extension_load_failures():
1110
979
if not _extension_load_failures:
1112
if config.GlobalConfig().suppress_warning('missing_extensions'):
981
from bzrlib.config import GlobalConfig
982
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
1114
984
# the warnings framework should by default show this only once
1115
from .trace import warning
985
from bzrlib.trace import warning
1117
"brz: warning: some compiled extensions could not be loaded; "
1118
"see ``brz help missing-extensions``")
987
"bzr: warning: some compiled extensions could not be loaded; "
988
"see <https://answers.launchpad.net/bzr/+faq/703>")
1119
989
# we no longer show the specific missing extensions here, because it makes
1120
990
# the message too long and scary - see
1121
991
# https://bugs.launchpad.net/bzr/+bug/430529
1125
from ._chunks_to_lines_pyx import chunks_to_lines
1126
except ImportError as e:
995
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
996
except ImportError, e:
1127
997
failed_to_load_extension(e)
1128
from ._chunks_to_lines_py import chunks_to_lines
998
from bzrlib._chunks_to_lines_py import chunks_to_lines
1131
1001
def split_lines(s):
1132
1002
"""Split s into lines, but without removing the newline characters."""
1133
1003
# Trivially convert a fulltext into a 'chunked' representation, and let
1134
1004
# chunks_to_lines do the heavy lifting.
1135
if isinstance(s, bytes):
1005
if isinstance(s, str):
1136
1006
# chunks_to_lines only supports 8-bit strings
1137
1007
return chunks_to_lines([s])
1418
1266
return unicode_or_utf8_string.encode('utf-8')
1421
def safe_revision_id(unicode_or_utf8_string):
1269
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
1270
' Revision id generators should be creating utf8'
1274
def safe_revision_id(unicode_or_utf8_string, warn=True):
1422
1275
"""Revision ids should now be utf8, but at one point they were unicode.
1424
1277
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
1279
:param warn: Functions that are sanitizing user data can set warn=False
1426
1280
:return: None or a utf8 revision id.
1428
1282
if (unicode_or_utf8_string is None
1429
or unicode_or_utf8_string.__class__ == bytes):
1283
or unicode_or_utf8_string.__class__ == str):
1430
1284
return unicode_or_utf8_string
1431
raise TypeError('Unicode revision ids are no longer supported. '
1432
'Revision id generators should be creating utf8 revision '
1436
def safe_file_id(unicode_or_utf8_string):
1286
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
1288
return cache_utf8.encode(unicode_or_utf8_string)
1291
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
1292
' generators should be creating utf8 file ids.')
1295
def safe_file_id(unicode_or_utf8_string, warn=True):
1437
1296
"""File ids should now be utf8, but at one point they were unicode.
1439
1298
This is the same as safe_utf8, except it uses the cached encode functions
1555
1391
None is returned if the width can't established precisely.
1558
- if BRZ_COLUMNS is set, returns its value
1394
- if BZR_COLUMNS is set, returns its value
1559
1395
- if there is no controlling terminal, returns None
1560
- query the OS, if the queried size has changed since the last query,
1562
1396
- if COLUMNS is set, returns its value,
1563
- if the OS has a value (even though it's never changed), return its value.
1565
1398
From there, we need to query the OS to get the size of the controlling
1568
On Unices we query the OS by:
1569
1402
- get termios.TIOCGWINSZ
1570
1403
- if an error occurs or a negative value is obtained, returns None
1572
On Windows we query the OS by:
1573
1407
- win32utils.get_console_size() decides,
1574
1408
- returns None on error (provided default value)
1576
# Note to implementors: if changing the rules for determining the width,
1577
# make sure you've considered the behaviour in these cases:
1578
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1579
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1581
# - (add more interesting cases here, if you find any)
1582
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1583
# but we don't want to register a signal handler because it is impossible
1584
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1585
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1586
# time so we can notice if the reported size has changed, which should have
1589
# If BRZ_COLUMNS is set, take it, user is always right
1590
# Except if they specified 0 in which case, impose no limit here
1411
# If BZR_COLUMNS is set, take it, user is always right
1592
width = int(os.environ['BRZ_COLUMNS'])
1413
return int(os.environ['BZR_COLUMNS'])
1593
1414
except (KeyError, ValueError):
1595
if width is not None:
1601
1417
isatty = getattr(sys.stdout, 'isatty', None)
1602
if isatty is None or not isatty():
1603
# Don't guess, setting BRZ_COLUMNS is the recommended way to override.
1418
if isatty is None or not isatty():
1419
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
1607
width, height = os_size = _terminal_size(None, None)
1608
global _first_terminal_size, _terminal_size_state
1609
if _terminal_size_state == 'no_data':
1610
_first_terminal_size = os_size
1611
_terminal_size_state = 'unchanged'
1612
elif (_terminal_size_state == 'unchanged' and
1613
_first_terminal_size != os_size):
1614
_terminal_size_state = 'changed'
1616
# If the OS claims to know how wide the terminal is, and this value has
1617
# ever changed, use that.
1618
if _terminal_size_state == 'changed':
1619
if width is not None and width > 0:
1622
# If COLUMNS is set, use it.
1422
# If COLUMNS is set, take it, the terminal knows better (even inside a
1423
# given terminal, the application can decide to set COLUMNS to a lower
1424
# value (splitted screen) or a bigger value (scroll bars))
1624
1426
return int(os.environ['COLUMNS'])
1625
1427
except (KeyError, ValueError):
1628
# Finally, use an unchanged size from the OS, if we have one.
1629
if _terminal_size_state == 'unchanged':
1630
if width is not None and width > 0:
1430
width, height = _terminal_size(None, None)
1432
# Consider invalid values as meaning no width
1633
# The width could not be determined.
1637
1438
def _win32_terminal_size(width, height):
1638
width, height = win32utils.get_console_size(
1639
defaultx=width, defaulty=height)
1439
width, height = win32utils.get_console_size(defaultx=width, defaulty=height)
1640
1440
return width, height
1643
1443
def _ioctl_terminal_size(width, height):
1445
import struct, fcntl, termios
1648
1446
s = struct.pack('HHHH', 0, 0, 0, 0)
1649
1447
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1650
1448
height, width = struct.unpack('HHHH', x)[0:2]
1668
1465
_terminal_size = _ioctl_terminal_size
1671
def supports_executable(path):
1672
"""Return if filesystem at path supports executable bit.
1674
:param path: Path for which to check the file system
1675
:return: boolean indicating whether executable bit can be stored/relied upon
1677
if sys.platform == 'win32':
1680
fs_type = get_fs_type(path)
1681
except errors.DependencyNotPresent as e:
1682
trace.mutter('Unable to get fs type for %r: %s', path, e)
1684
if fs_type in ('vfat', 'ntfs'):
1685
# filesystems known to not support executable bit
1690
def supports_symlinks(path):
1691
"""Return if the filesystem at path supports the creation of symbolic links.
1694
if not has_symlinks():
1697
fs_type = get_fs_type(path)
1698
except errors.DependencyNotPresent as e:
1699
trace.mutter('Unable to get fs type for %r: %s', path, e)
1701
if fs_type in ('vfat', 'ntfs'):
1702
# filesystems known to not support symlinks
1468
def _terminal_size_changed(signum, frame):
1469
"""Set COLUMNS upon receiving a SIGnal for WINdow size CHange."""
1470
width, height = _terminal_size(None, None)
1471
if width is not None:
1472
os.environ['COLUMNS'] = str(width)
1475
_registered_sigwinch = False
1477
def watch_sigwinch():
1478
"""Register for SIGWINCH, once and only once."""
1479
global _registered_sigwinch
1480
if not _registered_sigwinch:
1481
if sys.platform == 'win32':
1482
# Martin (gz) mentioned WINDOW_BUFFER_SIZE_RECORD from
1483
# ReadConsoleInput but I've no idea how to plug that in
1484
# the current design -- vila 20091216
1487
set_signal_handler(signal.SIGWINCH, _terminal_size_changed)
1488
_registered_sigwinch = True
1491
def supports_executable():
1492
return sys.platform != "win32"
1707
1495
def supports_posix_readonly():
1950
1744
See DirReader.read_dir for details.
1952
1746
_utf8_encode = self._utf8_encode
1954
def _fs_decode(s): return s.decode(_fs_enc)
1956
def _fs_encode(s): return s.encode(_fs_enc)
1957
1747
_lstat = os.lstat
1958
1748
_listdir = os.listdir
1959
1749
_kind_from_mode = file_kind_from_stat_mode
1962
relprefix = prefix + b'/'
1752
relprefix = prefix + '/'
1965
top_slash = top + '/'
1755
top_slash = top + u'/'
1968
1758
append = dirblock.append
1969
for name_native in _listdir(top.encode('utf-8')):
1759
for name in sorted(_listdir(top)):
1971
name = _fs_decode(name_native)
1761
name_utf8 = _utf8_encode(name)[0]
1972
1762
except UnicodeDecodeError:
1973
1763
raise errors.BadFilenameEncoding(
1974
relprefix + name_native, _fs_enc)
1975
name_utf8 = _utf8_encode(name)[0]
1764
_utf8_encode(relprefix)[0] + name, _fs_enc)
1976
1765
abspath = top_slash + name
1977
1766
statvalue = _lstat(abspath)
1978
1767
kind = _kind_from_mode(statvalue.st_mode)
1979
1768
append((relprefix + name_utf8, name_utf8, kind, statvalue, abspath))
1980
return sorted(dirblock)
1983
1772
def copy_tree(from_path, to_path, handlers={}):
2041
1830
s = os.stat(src)
2042
1831
chown(dst, s.st_uid, s.st_gid)
2045
'Unable to copy ownership from "%s" to "%s". '
2046
'You may want to set it manually.', src, dst)
2047
trace.log_exception_quietly()
1833
trace.warning("Unable to copy ownership from '%s' to '%s': IOError: %s." % (src, dst, e))
1836
def mkdir_with_ownership(path, ownership_src=None):
1837
"""Create the directory 'path' with specified ownership.
1839
If ownership_src is given, copies (chown) usr/grp ownership
1840
from 'ownership_src' to 'path'. If ownership_src is None, use the
1841
containing dir ownership.
1844
copy_ownership(path, ownership_src)
1847
def open_with_ownership(filename, mode='r', bufsize=-1, ownership_src=None):
1848
"""Open the file 'filename' with the specified ownership.
1850
If ownership_src is specified, copy usr/grp ownership from ownership_src
1851
to filename. If ownership_src is None, copy ownership from containing
1853
Returns the opened file object.
1855
f = open(filename, mode, bufsize)
1856
copy_ownership(filename, ownership_src)
2050
1860
def path_prefix_key(path):
2053
1863
This can be used to sort paths in the same way that walkdirs does.
2055
return (dirname(path), path)
1865
return (dirname(path) , path)
2058
1868
def compare_paths_prefix_order(path_a, path_b):
2059
1869
"""Compare path_a and path_b to generate the same order walkdirs uses."""
2060
1870
key_a = path_prefix_key(path_a)
2061
1871
key_b = path_prefix_key(path_b)
2062
return (key_a > key_b) - (key_a < key_b)
1872
return cmp(key_a, key_b)
2065
1875
_cached_user_encoding = None
2068
def get_user_encoding():
1878
def get_user_encoding(use_cache=True):
2069
1879
"""Find out what the preferred user encoding is.
2071
1881
This is generally the encoding that is used for command line parameters
2072
1882
and file contents. This may be different from the terminal encoding
2073
1883
or the filesystem encoding.
1885
:param use_cache: Enable cache for detected encoding.
1886
(This parameter is turned on by default,
1887
and required only for selftesting)
2075
1889
:return: A string defining the preferred user encoding
2077
1891
global _cached_user_encoding
2078
if _cached_user_encoding is not None:
1892
if _cached_user_encoding is not None and use_cache:
2079
1893
return _cached_user_encoding
2081
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2082
# Use the existing locale settings and call nl_langinfo directly
2083
# rather than going through getpreferredencoding. This avoids
2084
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2085
# possibility of the setlocale call throwing an error.
2086
user_encoding = locale.nl_langinfo(locale.CODESET)
1895
if sys.platform == 'darwin':
1896
# python locale.getpreferredencoding() always return
1897
# 'mac-roman' on darwin. That's a lie.
1898
sys.platform = 'posix'
1900
if os.environ.get('LANG', None) is None:
1901
# If LANG is not set, we end up with 'ascii', which is bad
1902
# ('mac-roman' is more than ascii), so we set a default which
1903
# will give us UTF-8 (which appears to work in all cases on
1904
# OSX). Users are still free to override LANG of course, as
1905
# long as it give us something meaningful. This work-around
1906
# *may* not be needed with python 3k and/or OSX 10.5, but will
1907
# work with them too -- vila 20080908
1908
os.environ['LANG'] = 'en_US.UTF-8'
1911
sys.platform = 'darwin'
2088
# GZ 2011-12-19: On windows could call GetACP directly instead.
2089
user_encoding = locale.getpreferredencoding(False)
2092
user_encoding = codecs.lookup(user_encoding).name
2094
if user_encoding not in ("", "cp0"):
2095
sys.stderr.write('brz: warning:'
1916
user_encoding = locale.getpreferredencoding()
1917
except locale.Error, e:
1918
sys.stderr.write('bzr: warning: %s\n'
1919
' Could not determine what text encoding to use.\n'
1920
' This error usually means your Python interpreter\n'
1921
' doesn\'t support the locale set by $LANG (%s)\n'
1922
" Continuing with ascii encoding.\n"
1923
% (e, os.environ.get('LANG')))
1924
user_encoding = 'ascii'
1926
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1927
# treat that as ASCII, and not support printing unicode characters to the
1930
# For python scripts run under vim, we get '', so also treat that as ASCII
1931
if user_encoding in (None, 'cp0', ''):
1932
user_encoding = 'ascii'
1936
codecs.lookup(user_encoding)
1938
sys.stderr.write('bzr: warning:'
2096
1939
' unknown encoding %s.'
2097
1940
' Continuing with ascii encoding.\n'
2098
1941
% user_encoding
2100
user_encoding = 'ascii'
2102
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2103
if user_encoding == 'ascii':
2104
if sys.platform == 'darwin':
2105
# OSX is special-cased in Python to have a UTF-8 filesystem
2106
# encoding and previously had LANG set here if not present.
2107
user_encoding = 'utf-8'
2108
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2109
# for some other posix platforms as well.
2111
_cached_user_encoding = user_encoding
1943
user_encoding = 'ascii'
1946
_cached_user_encoding = user_encoding
2112
1948
return user_encoding
2115
def get_diff_header_encoding():
2116
return get_terminal_encoding()
2119
1951
def get_host_name():
2120
1952
"""Return the current unicode host name.
2137
1968
# data at once.
2138
1969
MAX_SOCKET_CHUNK = 64 * 1024
2140
_end_of_stream_errors = [errno.ECONNRESET, errno.EPIPE, errno.EINVAL]
2141
for _eno in ['WSAECONNRESET', 'WSAECONNABORTED']:
2142
_eno = getattr(errno, _eno, None)
2143
if _eno is not None:
2144
_end_of_stream_errors.append(_eno)
2148
1971
def read_bytes_from_socket(sock, report_activity=None,
2149
max_read_size=MAX_SOCKET_CHUNK):
1972
max_read_size=MAX_SOCKET_CHUNK):
2150
1973
"""Read up to max_read_size of bytes from sock and notify of progress.
2152
1975
Translates "Connection reset by peer" into file-like EOF (return an
2153
1976
empty string rather than raise an error), and repeats the recv if
2154
1977
interrupted by a signal.
2158
data = sock.recv(max_read_size)
2159
except socket.error as e:
1981
bytes = sock.recv(max_read_size)
1982
except socket.error, e:
2160
1983
eno = e.args[0]
2161
if eno in _end_of_stream_errors:
1984
if eno == getattr(errno, "WSAECONNRESET", errno.ECONNRESET):
2162
1985
# The connection was closed by the other side. Callers expect
2163
1986
# an empty string to signal end-of-stream.
2165
1988
elif eno == errno.EINTR:
2166
1989
# Retry the interrupted recv.
2170
1993
if report_activity is not None:
2171
report_activity(len(data), 'read')
1994
report_activity(len(bytes), 'read')
2175
1998
def recv_all(socket, count):
2183
2006
This isn't optimized and is intended mostly for use in testing.
2186
2009
while len(b) < count:
2187
2010
new = read_bytes_from_socket(socket, None, count - len(b))
2194
2017
def send_all(sock, bytes, report_activity=None):
2195
2018
"""Send all bytes on a socket.
2197
2020
Breaks large blocks in smaller chunks to avoid buffering limitations on
2198
2021
some platforms, and catches EINTR which may be thrown if the send is
2199
2022
interrupted by a signal.
2201
2024
This is preferred to socket.sendall(), because it avoids portability bugs
2202
2025
and provides activity reporting.
2204
2027
:param report_activity: Call this as bytes are read, see
2205
2028
Transport._report_activity
2208
2031
byte_count = len(bytes)
2209
view = memoryview(bytes)
2210
2032
while sent_total < byte_count:
2212
sent = sock.send(view[sent_total:sent_total + MAX_SOCKET_CHUNK])
2213
except (socket.error, IOError) as e:
2214
if e.args[0] in _end_of_stream_errors:
2215
raise errors.ConnectionReset(
2216
"Error trying to write to socket", e)
2034
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2035
except socket.error, e:
2217
2036
if e.args[0] != errno.EINTR:
2221
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2223
2039
sent_total += sent
2224
if report_activity is not None:
2225
report_activity(sent, 'write')
2228
def connect_socket(address):
2229
# Slight variation of the socket.create_connection() function (provided by
2230
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2231
# provide it for previous python versions. Also, we don't use the timeout
2232
# parameter (provided by the python implementation) so we don't implement
2234
err = socket.error('getaddrinfo returns an empty list')
2235
host, port = address
2236
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2237
af, socktype, proto, canonname, sa = res
2240
sock = socket.socket(af, socktype, proto)
2244
except socket.error as e:
2246
# 'err' is now the most recent error
2247
if sock is not None:
2040
report_activity(sent, 'write')
2252
2043
def dereference_path(path):
2280
2071
If and when pkg_resources becomes a standard library, this routine
2281
2072
can delegate to it.
2283
# Check package name is within breezy
2284
if package == "breezy":
2074
# Check package name is within bzrlib
2075
if package == "bzrlib":
2285
2076
resource_relpath = resource_name
2286
elif package.startswith("breezy."):
2287
package = package[len("breezy."):].replace('.', os.sep)
2077
elif package.startswith("bzrlib."):
2078
package = package[len("bzrlib."):].replace('.', os.sep)
2288
2079
resource_relpath = pathjoin(package, resource_name)
2290
raise errors.BzrError('resource package %s not in breezy' % package)
2081
raise errors.BzrError('resource package %s not in bzrlib' % package)
2292
2083
# Map the resource to a file and read its contents
2293
base = dirname(breezy.__file__)
2084
base = dirname(bzrlib.__file__)
2294
2085
if getattr(sys, 'frozen', None): # bzr.exe
2295
2086
base = abspath(pathjoin(base, '..', '..'))
2296
with open(pathjoin(base, resource_relpath), "rt") as f:
2087
filename = pathjoin(base, resource_relpath)
2088
return open(filename, 'rU').read()
2300
2091
def file_kind_from_stat_mode_thunk(mode):
2301
2092
global file_kind_from_stat_mode
2302
2093
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2304
from ._readdir_pyx import UTF8DirReader
2095
from bzrlib._readdir_pyx import UTF8DirReader
2305
2096
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2097
except ImportError, e:
2307
2098
# This is one time where we won't warn that an extension failed to
2308
2099
# load. The extension is never available on Windows anyway.
2309
from ._readdir_py import (
2100
from bzrlib._readdir_py import (
2310
2101
_kind_from_mode as file_kind_from_stat_mode
2312
2103
return file_kind_from_stat_mode(mode)
2315
2104
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2318
def file_stat(f, _lstat=os.lstat):
2107
def file_kind(f, _lstat=os.lstat):
2322
except OSError as e:
2109
return file_kind_from_stat_mode(_lstat(f).st_mode)
2323
2111
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2324
2112
raise errors.NoSuchFile(f)
2328
def file_kind(f, _lstat=os.lstat):
2329
stat_value = file_stat(f, _lstat)
2330
return file_kind_from_stat_mode(stat_value.st_mode)
2333
2116
def until_no_eintr(f, *a, **kw):
2334
2117
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2336
2119
WARNING: you must be certain that it is safe to retry the call repeatedly
2337
2120
if EINTR does occur. This is typically only true for low-level operations
2338
2121
like os.read. If in any doubt, don't use this.
2340
2123
Keep in mind that this is not a complete solution to EINTR. There is
2341
2124
probably code in the Python standard library and other dependencies that
2342
2125
may encounter EINTR if a signal arrives (and there is signal handler for
2343
that signal). So this function can reduce the impact for IO that breezy
2126
that signal). So this function can reduce the impact for IO that bzrlib
2344
2127
directly controls, but it is not a complete solution.
2346
2129
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2349
2132
return f(*a, **kw)
2350
except (IOError, OSError) as e:
2133
except (IOError, OSError), e:
2351
2134
if e.errno == errno.EINTR:
2139
def re_compile_checked(re_string, flags=0, where=""):
2140
"""Return a compiled re, or raise a sensible error.
2142
This should only be used when compiling user-supplied REs.
2144
:param re_string: Text form of regular expression.
2145
:param flags: eg re.IGNORECASE
2146
:param where: Message explaining to the user the context where
2147
it occurred, eg 'log search filter'.
2149
# from https://bugs.launchpad.net/bzr/+bug/251352
2151
re_obj = re.compile(re_string, flags)
2156
where = ' in ' + where
2157
# despite the name 'error' is a type
2158
raise errors.BzrCommandError('Invalid regular expression%s: %r: %s'
2159
% (where, re_string, e))
2356
2162
if sys.platform == "win32":
2359
2165
return msvcrt.getch()
2364
2170
fd = sys.stdin.fileno()
2365
2171
settings = termios.tcgetattr(fd)
2370
2176
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2373
if sys.platform.startswith('linux'):
2180
if sys.platform == 'linux2':
2374
2181
def _local_concurrency():
2376
return os.sysconf('SC_NPROCESSORS_ONLN')
2377
except (ValueError, OSError, AttributeError):
2183
prefix = 'processor'
2184
for line in file('/proc/cpuinfo', 'rb'):
2185
if line.startswith(prefix):
2186
concurrency = int(line[line.find(':')+1:]) + 1
2379
2188
elif sys.platform == 'darwin':
2380
2189
def _local_concurrency():
2381
2190
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2382
2191
stdout=subprocess.PIPE).communicate()[0]
2383
elif "bsd" in sys.platform:
2192
elif sys.platform[0:7] == 'freebsd':
2384
2193
def _local_concurrency():
2385
2194
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2386
2195
stdout=subprocess.PIPE).communicate()[0]
2387
2196
elif sys.platform == 'sunos5':
2388
2197
def _local_concurrency():
2389
return subprocess.Popen(['psrinfo', '-p', ],
2198
return subprocess.Popen(['psrinfo', '-p',],
2390
2199
stdout=subprocess.PIPE).communicate()[0]
2391
2200
elif sys.platform == "win32":
2392
2201
def _local_concurrency():
2489
2291
return os.fdopen(os.open(filename, flags), mode, bufsize)
2491
2293
open_file = open
2494
def available_backup_name(base, exists):
2495
"""Find a non-existing backup file name.
2497
This will *not* create anything, this only return a 'free' entry. This
2498
should be used for checking names in a directory below a locked
2499
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2500
Leap) and generally discouraged.
2502
:param base: The base name.
2504
:param exists: A callable returning True if the path parameter exists.
2507
name = "%s.~%d~" % (base, counter)
2510
name = "%s.~%d~" % (base, counter)
2514
def set_fd_cloexec(fd):
2515
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2516
support for this is not available.
2520
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2521
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2522
except (ImportError, AttributeError):
2523
# Either the fcntl module or specific constants are not present
2527
def find_executable_on_path(name):
2528
"""Finds an executable on the PATH.
2530
On Windows, this will try to append each extension in the PATHEXT
2531
environment variable to the name, if it cannot be found with the name
2534
:param name: The base name of the executable.
2535
:return: The path to the executable found or None.
2537
if sys.platform == 'win32':
2538
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2539
exts = [ext.lower() for ext in exts]
2540
base, ext = os.path.splitext(name)
2542
if ext.lower() not in exts:
2548
path = os.environ.get('PATH')
2549
if path is not None:
2550
path = path.split(os.pathsep)
2553
f = os.path.join(d, name) + ext
2554
if os.access(f, os.X_OK):
2556
if sys.platform == 'win32':
2557
app_path = win32utils.get_app_path(name)
2558
if app_path != name:
2563
def _posix_is_local_pid_dead(pid):
2564
"""True if pid doesn't correspond to live process on this machine"""
2566
# Special meaning of unix kill: just check if it's there.
2568
except OSError as e:
2569
if e.errno == errno.ESRCH:
2570
# On this machine, and really not found: as sure as we can be
2573
elif e.errno == errno.EPERM:
2574
# exists, though not ours
2577
trace.mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2578
# Don't really know.
2581
# Exists and our process: not dead.
2585
if sys.platform == "win32":
2586
is_local_pid_dead = win32utils.is_local_pid_dead
2588
is_local_pid_dead = _posix_is_local_pid_dead
2590
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2591
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2592
if getattr(errno, name, None) is not None]
2595
def fdatasync(fileno):
2596
"""Flush file contents to disk if possible.
2598
:param fileno: Integer OS file handle.
2599
:raises TransportNotPossible: If flushing to disk is not possible.
2601
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2605
except IOError as e:
2606
# See bug #1075108, on some platforms fdatasync exists, but can
2607
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2608
# and reduce the chance of corruption-on-powerloss situations. It
2609
# is not a mandatory call, so it is ok to suppress failures.
2610
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2611
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2615
def ensure_empty_directory_exists(path, exception_class):
2616
"""Make sure a local directory exists and is empty.
2618
If it does not exist, it is created. If it exists and is not empty, an
2619
instance of exception_class is raised.
2623
except OSError as e:
2624
if e.errno != errno.EEXIST:
2626
if os.listdir(path) != []:
2627
raise exception_class(path)
2630
def is_environment_error(evalue):
2631
"""True if exception instance is due to a process environment issue
2633
This includes OSError and IOError, but also other errors that come from
2634
the operating system or core libraries but are not subclasses of those.
2636
if isinstance(evalue, (EnvironmentError, select.error)):
2638
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
2643
def read_mtab(path):
2644
"""Read an fstab-style file and extract mountpoint+filesystem information.
2646
:param path: Path to read from
2647
:yield: Tuples with mountpoints (as bytestrings) and filesystem names
2649
with open(path, 'rb') as f:
2651
if line.startswith(b'#'):
2656
yield cols[1], cols[2].decode('ascii', 'replace')
2659
MTAB_PATH = '/etc/mtab'
2661
class FilesystemFinder(object):
2662
"""Find the filesystem for a particular path."""
2664
def __init__(self, mountpoints):
2667
self._mountpoints = sorted(mountpoints, key=key, reverse=True)
2671
"""Create a FilesystemFinder from an mtab-style file.
2673
Note that this will silenty ignore mtab if it doesn't exist or can not
2676
# TODO(jelmer): Use inotify to be notified when /etc/mtab changes and
2677
# we need to re-read it.
2679
return cls(read_mtab(MTAB_PATH))
2680
except EnvironmentError as e:
2681
trace.mutter('Unable to read mtab: %s', e)
2684
def find(self, path):
2685
"""Find the filesystem used by a particular path.
2687
:param path: Path to find (bytestring or text type)
2688
:return: Filesystem name (as text type) or None, if the filesystem is
2691
for mountpoint, filesystem in self._mountpoints:
2692
if is_inside(mountpoint, path):
2697
_FILESYSTEM_FINDER = None
2700
def get_fs_type(path):
2701
"""Return the filesystem type for the partition a path is in.
2703
:param path: Path to search filesystem type for
2704
:return: A FS type, as string. E.g. "ext2"
2706
global _FILESYSTEM_FINDER
2707
if _FILESYSTEM_FINDER is None:
2708
_FILESYSTEM_FINDER = FilesystemFinder.from_mtab()
2710
if not isinstance(path, bytes):
2711
path = path.encode(_fs_enc)
2713
return _FILESYSTEM_FINDER.find(path)
2717
perf_counter = time.perf_counter
2719
perf_counter = time.clock