14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
from __future__ import absolute_import
20
from stat import S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE
25
from bzrlib.lazy_import import lazy_import
27
from .lazy_import import lazy_import
26
28
lazy_import(globals(), """
27
29
from datetime import datetime
29
from ntpath import (abspath as _nt_abspath,
31
normpath as _nt_normpath,
32
realpath as _nt_realpath,
33
splitdrive as _nt_splitdrive,
35
# We need to import both shutil and rmtree as we export the later on posix
36
# and need the former on windows
38
from shutil import rmtree
41
# We need to import both tempfile and mkdtemp as we export the later on posix
42
# and need the former on windows
43
from tempfile import (
44
from tempfile import mkdtemp
52
from breezy.i18n import gettext
56
from bzrlib.symbol_versioning import (
61
# sha and md5 modules are deprecated in python2.6 but hashlib is available as
63
if sys.version_info < (2, 5):
64
import md5 as _mod_md5
66
import sha as _mod_sha
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from bzrlib import symbol_versioning
79
73
# Cross platform wall-clock time functionality with decent resolution.
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O_NOINHERIT = getattr(os, 'O_NOINHERIT', 0)
93
class UnsupportedTimezoneFormat(errors.BzrError):
95
_fmt = ('Unsupported timezone format "%(timezone)s", '
96
'options are "utc", "original", "local".')
98
def __init__(self, timezone):
99
self.timezone = timezone
99
102
def get_unicode_argv():
101
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user_encoding = get_user_encoding()
102
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return [a.decode(user_encoding) for a in sys.argv[1:]]
103
108
except UnicodeDecodeError:
104
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
109
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
110
"application locale.").format(a, user_encoding))
108
113
def make_readonly(filename):
109
114
"""Make a filename read-only."""
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mod = os.lstat(filename).st_mode
111
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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)
116
121
def make_writable(filename):
117
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mod = os.lstat(filename).st_mode
118
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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
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# https://bugs.launchpad.net/bzr/+bug/606537
133
# It is probably faster to just do the chmod, rather than
134
# doing a stat, and then trying to compare
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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
138
# probably no point warning about it.
139
# <https://bugs.launchpad.net/bzr/+bug/606537>
140
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
141
trace.mutter("ignore error on chmod of %r: %r" % (
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147
def minimum_path_selection(paths):
232
256
file_existed = False
234
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rename_func(new, tmp_name)
235
except (errors.NoSuchFile,), e:
259
except (errors.NoSuchFile,) as e:
238
262
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
239
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# function raises an IOError with errno is None when a rename fails.
240
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# This then gets caught here.
241
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if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
267
except Exception as e:
244
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if (getattr(e, 'errno', None) is None
245
269
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:
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# source and target may be aliases of each other (e.g. on a
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# case-insensitive filesystem), so we may have accidentally renamed
261
# source by when we tried to rename target
262
failure_exc = sys.exc_info()
263
if (file_existed and e.errno in (None, errno.ENOENT)
264
and old.lower() == new.lower()):
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# source and target are the same file on a case-insensitive
266
# filesystem, so we don't generate an exception
276
# This may throw an exception, in which case success will
278
rename_func(old, new)
280
except (IOError, OSError) as e:
281
# source and target may be aliases of each other (e.g. on a
282
# case-insensitive filesystem), so we may have accidentally renamed
283
# source by when we tried to rename target
284
if (file_existed and e.errno in (None, errno.ENOENT)
285
and old.lower() == new.lower()):
286
# source and target are the same file on a case-insensitive
287
# filesystem, so we don't generate an exception
270
293
# If the file used to exist, rename it back into place
273
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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
301
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
281
302
# choke on a Unicode string containing a relative path if
282
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
284
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
285
305
def _posix_abspath(path):
286
306
# jam 20060426 rather than encoding to fsencoding
287
307
# copy posixpath.abspath, but use os.getcwdu instead
288
308
if not posixpath.isabs(path):
289
309
path = posixpath.join(getcwd(), path)
290
return posixpath.normpath(path)
310
return _posix_normpath(path)
293
313
def _posix_realpath(path):
294
314
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
317
def _posix_normpath(path):
318
path = posixpath.normpath(path)
319
# Bug 861008: posixpath.normpath() returns a path normalized according to
320
# the POSIX standard, which stipulates (for compatibility reasons) that two
321
# leading slashes must not be simplified to one, and only if there are 3 or
322
# more should they be simplified as one. So we treat the leading 2 slashes
323
# as a special case here by simply removing the first slash, as we consider
324
# that breaking POSIX compatibility for this obscure feature is acceptable.
325
# This is not a paranoid precaution, as we notably get paths like this when
326
# the repo is hosted at the root of the filesystem, i.e. in "/".
327
if path.startswith('//'):
332
def _posix_path_from_environ(key):
333
"""Get unicode path from `key` in environment or None if not present
335
Note that posix systems use arbitrary byte strings for filesystem objects,
336
so a path that raises BadFilenameEncoding here may still be accessible.
338
val = os.environ.get(key, None)
339
if PY3 or val is None:
342
return val.decode(_fs_enc)
343
except UnicodeDecodeError:
344
# GZ 2011-12-12:Ideally want to include `key` in the exception message
345
raise errors.BadFilenameEncoding(val, _fs_enc)
348
def _posix_get_home_dir():
349
"""Get the home directory of the current user as a unicode path"""
350
path = posixpath.expanduser("~")
352
return path.decode(_fs_enc)
353
except AttributeError:
355
except UnicodeDecodeError:
356
raise errors.BadFilenameEncoding(path, _fs_enc)
359
def _posix_getuser_unicode():
360
"""Get username from environment or password database as unicode"""
361
name = getpass.getuser()
364
user_encoding = get_user_encoding()
366
return name.decode(user_encoding)
367
except UnicodeDecodeError:
368
raise errors.BzrError("Encoding of username %r is unsupported by %s "
369
"application locale." % (name, user_encoding))
297
372
def _win32_fixdrive(path):
298
373
"""Force drive letters to be consistent.
303
378
running python.exe under cmd.exe return capital C:\\
304
379
running win32 python inside a cygwin shell returns lowercase c:\\
306
drive, path = _nt_splitdrive(path)
381
drive, path = ntpath.splitdrive(path)
307
382
return drive.upper() + path
310
385
def _win32_abspath(path):
311
# Real _nt_abspath doesn't have a problem with a unicode cwd
312
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
315
def _win98_abspath(path):
316
"""Return the absolute version of a path.
317
Windows 98 safe implementation (python reimplementation
318
of Win32 API function GetFullPathNameW)
323
# \\HOST\path => //HOST/path
324
# //HOST/path => //HOST/path
325
# path => C:/cwd/path
328
# check for absolute path
329
drive = _nt_splitdrive(path)[0]
330
if drive == '' and path[:2] not in('//','\\\\'):
332
# we cannot simply os.path.join cwd and path
333
# because os.path.join('C:','/path') produce '/path'
334
# and this is incorrect
335
if path[:1] in ('/','\\'):
336
cwd = _nt_splitdrive(cwd)[0]
338
path = cwd + '\\' + path
339
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
386
# Real ntpath.abspath doesn't have a problem with a unicode cwd
387
return _win32_fixdrive(ntpath.abspath(path).replace('\\', '/'))
342
390
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('\\', '/'))
391
# Real ntpath.realpath doesn't have a problem with a unicode cwd
392
return _win32_fixdrive(ntpath.realpath(path).replace('\\', '/'))
347
395
def _win32_pathjoin(*args):
348
return _nt_join(*args).replace('\\', '/')
396
return ntpath.join(*args).replace('\\', '/')
351
399
def _win32_normpath(path):
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
400
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
355
403
def _win32_getcwd():
356
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
404
return _win32_fixdrive(_getcwd().replace('\\', '/'))
359
407
def _win32_mkdtemp(*args, **kwargs):
360
408
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
411
def _win32_rename(old, new):
372
412
"""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
429
def _mac_getcwd():
400
return unicodedata.normalize('NFC', os.getcwdu())
430
return unicodedata.normalize('NFC', _getcwd())
433
def _rename_wrap_exception(rename_func):
434
"""Adds extra information to any exceptions that come from rename().
436
The exception has an updated message and 'old_filename' and 'new_filename'
440
def _rename_wrapper(old, new):
442
rename_func(old, new)
444
detailed_error = OSError(e.errno, e.strerror +
445
" [occurred when renaming '%s' to '%s']" %
447
detailed_error.old_filename = old
448
detailed_error.new_filename = new
451
return _rename_wrapper
454
if sys.version_info > (3,):
460
# Default rename wraps os.rename()
461
rename = _rename_wrap_exception(os.rename)
403
463
# Default is to just use the python builtins, but these can be rebound on
404
464
# particular platforms.
405
465
abspath = _posix_abspath
406
466
realpath = _posix_realpath
407
467
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
468
normpath = _posix_normpath
469
path_from_environ = _posix_path_from_environ
470
_get_home_dir = _posix_get_home_dir
471
getuser_unicode = _posix_getuser_unicode
411
473
dirname = os.path.dirname
412
474
basename = os.path.basename
413
475
split = os.path.split
414
476
splitext = os.path.splitext
415
# These were already imported into local scope
477
# These were already lazily imported into local scope
416
478
# mkdtemp = tempfile.mkdtemp
417
479
# rmtree = shutil.rmtree
419
487
MIN_ABS_PATHLENGTH = 1
422
490
if sys.platform == 'win32':
423
if win32utils.winver == 'Windows 98':
424
abspath = _win98_abspath
426
abspath = _win32_abspath
491
abspath = _win32_abspath
427
492
realpath = _win32_realpath
428
493
pathjoin = _win32_pathjoin
429
494
normpath = _win32_normpath
430
495
getcwd = _win32_getcwd
431
496
mkdtemp = _win32_mkdtemp
432
rename = _win32_rename
497
rename = _rename_wrap_exception(_win32_rename)
499
from . import _walkdirs_win32
503
lstat = _walkdirs_win32.lstat
504
fstat = _walkdirs_win32.fstat
505
wrap_stat = _walkdirs_win32.wrap_stat
434
507
MIN_ABS_PATHLENGTH = 3
471
547
On my standard US Windows XP, the preferred encoding is
472
548
cp1252, but the console is cp437
550
:param trace: If True trace the selected encoding via mutter().
474
from bzrlib.trace import mutter
552
from .trace import mutter
475
553
output_encoding = getattr(sys.stdout, 'encoding', None)
476
554
if not output_encoding:
477
555
input_encoding = getattr(sys.stdin, 'encoding', None)
478
556
if not input_encoding:
479
557
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
559
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
562
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
564
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
568
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
569
if output_encoding == 'cp0':
488
570
# invalid encoding (cp0 means 'no codepage' on Windows)
489
571
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
573
mutter('cp0 is invalid encoding.'
491
574
' encoding stdout as osutils.get_user_encoding() %r',
495
578
codecs.lookup(output_encoding)
496
579
except LookupError:
497
sys.stderr.write('bzr: warning:'
580
sys.stderr.write('brz: warning:'
498
581
' unknown terminal encoding %s.\n'
499
582
' Using encoding %s instead.\n'
500
583
% (output_encoding, get_user_encoding())
882
977
"""Return size of given open file."""
883
return os.fstat(f.fileno())[ST_SIZE]
886
# Define rand_bytes based on platform.
888
# Python 2.4 and later have os.urandom,
889
# but it doesn't work on some arches
891
rand_bytes = os.urandom
892
except (NotImplementedError, AttributeError):
893
# If python doesn't have os.urandom, or it doesn't work,
894
# then try to first pull random data from /dev/urandom
978
return os.fstat(f.fileno())[stat.ST_SIZE]
981
# Alias os.urandom to support platforms (which?) without /dev/urandom and
982
# override if it doesn't work. Avoid checking on windows where there is
983
# significant initialisation cost that can be avoided for some bzr calls.
985
rand_bytes = os.urandom
987
if rand_bytes.__module__ != "nt":
896
rand_bytes = file('/dev/urandom', 'rb').read
897
# Otherwise, use this hack as a last resort
898
except (IOError, OSError):
990
except NotImplementedError:
899
991
# not well seeded, but better than nothing
900
992
def rand_bytes(n):
970
1065
implementation should be loaded instead::
973
>>> import bzrlib._fictional_extension_pyx
1068
>>> import breezy._fictional_extension_pyx
974
1069
>>> except ImportError, e:
975
>>> bzrlib.osutils.failed_to_load_extension(e)
976
>>> import bzrlib._fictional_extension_py
1070
>>> breezy.osutils.failed_to_load_extension(e)
1071
>>> import breezy._fictional_extension_py
978
1073
# NB: This docstring is just an example, not a doctest, because doctest
979
1074
# currently can't cope with the use of lazy imports in this namespace --
982
1077
# This currently doesn't report the failure at the time it occurs, because
983
1078
# they tend to happen very early in startup when we can't check config
984
1079
# files etc, and also we want to report all failures but not spam the user
985
1080
# with 10 warnings.
986
from bzrlib import trace
987
1081
exception_str = str(exception)
988
1082
if exception_str not in _extension_load_failures:
989
1083
trace.mutter("failed to load compiled extension: %s" % exception_str)
993
1087
def report_extension_load_failures():
994
1088
if not _extension_load_failures:
996
from bzrlib.config import GlobalConfig
997
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
1090
if config.GlobalConfig().suppress_warning('missing_extensions'):
999
1092
# the warnings framework should by default show this only once
1000
from bzrlib.trace import warning
1093
from .trace import warning
1002
"bzr: warning: some compiled extensions could not be loaded; "
1003
"see <https://answers.launchpad.net/bzr/+faq/703>")
1095
"brz: warning: some compiled extensions could not be loaded; "
1096
"see ``brz help missing-extensions``")
1004
1097
# we no longer show the specific missing extensions here, because it makes
1005
1098
# the message too long and scary - see
1006
1099
# https://bugs.launchpad.net/bzr/+bug/430529
1010
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
1011
except ImportError, e:
1103
from ._chunks_to_lines_pyx import chunks_to_lines
1104
except ImportError as e:
1012
1105
failed_to_load_extension(e)
1013
from bzrlib._chunks_to_lines_py import chunks_to_lines
1106
from ._chunks_to_lines_py import chunks_to_lines
1016
1109
def split_lines(s):
1049
1143
os.link(src, dest)
1050
except (OSError, IOError), e:
1144
except (OSError, IOError) as e:
1051
1145
if e.errno != errno.EXDEV:
1053
1147
shutil.copyfile(src, dest)
1056
1150
def delete_any(path):
1057
"""Delete a file, symlink or directory.
1151
"""Delete a file, symlink or directory.
1059
1153
Will delete even if readonly.
1062
1156
_delete_file_or_dir(path)
1063
except (OSError, IOError), e:
1157
except (OSError, IOError) as e:
1064
1158
if e.errno in (errno.EPERM, errno.EACCES):
1065
1159
# make writable and try again
1250
1344
# but for now, we haven't optimized...
1251
1345
return [canonical_relpath(base, p) for p in paths]
1348
def decode_filename(filename):
1349
"""Decode the filename using the filesystem encoding
1351
If it is unicode, it is returned.
1352
Otherwise it is decoded from the the filesystem's encoding. If decoding
1353
fails, a errors.BadFilenameEncoding exception is raised.
1355
if isinstance(filename, text_type):
1358
return filename.decode(_fs_enc)
1359
except UnicodeDecodeError:
1360
raise errors.BadFilenameEncoding(filename, _fs_enc)
1253
1363
def safe_unicode(unicode_or_utf8_string):
1254
1364
"""Coerce unicode_or_utf8_string into unicode.
1284
1394
return unicode_or_utf8_string.encode('utf-8')
1287
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
1288
' Revision id generators should be creating utf8'
1292
def safe_revision_id(unicode_or_utf8_string, warn=True):
1397
def safe_revision_id(unicode_or_utf8_string):
1293
1398
"""Revision ids should now be utf8, but at one point they were unicode.
1295
1400
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
1297
:param warn: Functions that are sanitizing user data can set warn=False
1298
1402
:return: None or a utf8 revision id.
1300
1404
if (unicode_or_utf8_string is None
1301
or unicode_or_utf8_string.__class__ == str):
1405
or unicode_or_utf8_string.__class__ == bytes):
1302
1406
return unicode_or_utf8_string
1304
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
1306
return cache_utf8.encode(unicode_or_utf8_string)
1309
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
1310
' generators should be creating utf8 file ids.')
1313
def safe_file_id(unicode_or_utf8_string, warn=True):
1407
raise TypeError('Unicode revision ids are no longer supported. '
1408
'Revision id generators should be creating utf8 revision '
1412
def safe_file_id(unicode_or_utf8_string):
1314
1413
"""File ids should now be utf8, but at one point they were unicode.
1316
1415
This is the same as safe_utf8, except it uses the cached encode functions
1358
1454
can be accessed by that path.
1361
return unicodedata.normalize('NFC', unicode(path)), True
1457
if isinstance(path, bytes):
1458
path = path.decode(sys.getfilesystemencoding())
1459
return unicodedata.normalize('NFC', path), True
1364
1462
def _inaccessible_normalized_filename(path):
1365
1463
__doc__ = _accessible_normalized_filename.__doc__
1367
normalized = unicodedata.normalize('NFC', unicode(path))
1465
if isinstance(path, bytes):
1466
path = path.decode(sys.getfilesystemencoding())
1467
normalized = unicodedata.normalize('NFC', path)
1368
1468
return normalized, normalized == path
1424
1530
None is returned if the width can't established precisely.
1427
- if BZR_COLUMNS is set, returns its value
1533
- if BRZ_COLUMNS is set, returns its value
1428
1534
- if there is no controlling terminal, returns None
1535
- query the OS, if the queried size has changed since the last query,
1429
1537
- if COLUMNS is set, returns its value,
1538
- if the OS has a value (even though it's never changed), return its value.
1431
1540
From there, we need to query the OS to get the size of the controlling
1543
On Unices we query the OS by:
1435
1544
- get termios.TIOCGWINSZ
1436
1545
- if an error occurs or a negative value is obtained, returns None
1547
On Windows we query the OS by:
1440
1548
- win32utils.get_console_size() decides,
1441
1549
- returns None on error (provided default value)
1551
# Note to implementors: if changing the rules for determining the width,
1552
# make sure you've considered the behaviour in these cases:
1553
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1554
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1556
# - (add more interesting cases here, if you find any)
1557
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1558
# but we don't want to register a signal handler because it is impossible
1559
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1560
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1561
# 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
1564
# If BRZ_COLUMNS is set, take it, user is always right
1565
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1567
width = int(os.environ['BRZ_COLUMNS'])
1447
1568
except (KeyError, ValueError):
1570
if width is not None:
1450
1576
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.
1577
if isatty is None or not isatty():
1578
# 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))
1582
width, height = os_size = _terminal_size(None, None)
1583
global _first_terminal_size, _terminal_size_state
1584
if _terminal_size_state == 'no_data':
1585
_first_terminal_size = os_size
1586
_terminal_size_state = 'unchanged'
1587
elif (_terminal_size_state == 'unchanged' and
1588
_first_terminal_size != os_size):
1589
_terminal_size_state = 'changed'
1591
# If the OS claims to know how wide the terminal is, and this value has
1592
# ever changed, use that.
1593
if _terminal_size_state == 'changed':
1594
if width is not None and width > 0:
1597
# If COLUMNS is set, use it.
1459
1599
return int(os.environ['COLUMNS'])
1460
1600
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1603
# Finally, use an unchanged size from the OS, if we have one.
1604
if _terminal_size_state == 'unchanged':
1605
if width is not None and width > 0:
1608
# The width could not be determined.
1471
1612
def _win32_terminal_size(width, height):
1498
1639
_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
1642
def supports_executable():
1527
1643
return sys.platform != "win32"
1712
1828
global _selected_dir_reader
1713
1829
if _selected_dir_reader is None:
1714
fs_encoding = _fs_enc.upper()
1715
if sys.platform == "win32" and win32utils.winver == 'Windows NT':
1716
# Win98 doesn't have unicode apis like FindFirstFileW
1717
# TODO: We possibly could support Win98 by falling back to the
1718
# original FindFirstFile, and using TCHAR instead of WCHAR,
1719
# but that gets a bit tricky, and requires custom compiling
1830
if sys.platform == "win32":
1722
from bzrlib._walkdirs_win32 import Win32ReadDir
1832
from ._walkdirs_win32 import Win32ReadDir
1723
1833
_selected_dir_reader = Win32ReadDir()
1724
1834
except ImportError:
1726
elif fs_encoding in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1727
# ANSI_X3.4-1968 is a form of ASCII
1836
elif _fs_enc in ('utf-8', 'ascii'):
1729
from bzrlib._readdir_pyx import UTF8DirReader
1838
from ._readdir_pyx import UTF8DirReader
1730
1839
_selected_dir_reader = UTF8DirReader()
1731
except ImportError, e:
1840
except ImportError as e:
1732
1841
failed_to_load_extension(e)
1886
1998
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
2001
def get_user_encoding():
1890
2002
"""Find out what the preferred user encoding is.
1892
2004
This is generally the encoding that is used for command line parameters
1893
2005
and file contents. This may be different from the terminal encoding
1894
2006
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
2008
:return: A string defining the preferred user encoding
1902
2010
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
2011
if _cached_user_encoding is not None:
1904
2012
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'
2014
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2015
# Use the existing locale settings and call nl_langinfo directly
2016
# rather than going through getpreferredencoding. This avoids
2017
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2018
# possibility of the setlocale call throwing an error.
2019
user_encoding = locale.nl_langinfo(locale.CODESET)
2021
# GZ 2011-12-19: On windows could call GetACP directly instead.
2022
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:'
2025
user_encoding = codecs.lookup(user_encoding).name
2027
if user_encoding not in ("", "cp0"):
2028
sys.stderr.write('brz: warning:'
1950
2029
' unknown encoding %s.'
1951
2030
' Continuing with ascii encoding.\n'
1952
2031
% user_encoding
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = user_encoding
2033
user_encoding = 'ascii'
2035
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2036
if user_encoding == 'ascii':
2037
if sys.platform == 'darwin':
2038
# OSX is special-cased in Python to have a UTF-8 filesystem
2039
# encoding and previously had LANG set here if not present.
2040
user_encoding = 'utf-8'
2041
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2042
# for some other posix platforms as well.
2044
_cached_user_encoding = user_encoding
1959
2045
return user_encoding
2048
def get_diff_header_encoding():
2049
return get_terminal_encoding()
1962
2052
def get_host_name():
1963
2053
"""Return the current unicode host name.
1987
2086
empty string rather than raise an error), and repeats the recv if
1988
2087
interrupted by a signal.
1992
bytes = sock.recv(max_read_size)
1993
except socket.error, e:
2091
data = sock.recv(max_read_size)
2092
except socket.error as e:
1994
2093
eno = e.args[0]
1995
if eno == getattr(errno, "WSAECONNRESET", errno.ECONNRESET):
2094
if eno in _end_of_stream_errors:
1996
2095
# The connection was closed by the other side. Callers expect
1997
2096
# an empty string to signal end-of-stream.
1999
2098
elif eno == errno.EINTR:
2000
2099
# Retry the interrupted recv.
2004
2103
if report_activity is not None:
2005
report_activity(len(bytes), 'read')
2104
report_activity(len(data), 'read')
2009
2108
def recv_all(socket, count):
2028
2127
def send_all(sock, bytes, report_activity=None):
2029
2128
"""Send all bytes on a socket.
2031
2130
Breaks large blocks in smaller chunks to avoid buffering limitations on
2032
2131
some platforms, and catches EINTR which may be thrown if the send is
2033
2132
interrupted by a signal.
2035
2134
This is preferred to socket.sendall(), because it avoids portability bugs
2036
2135
and provides activity reporting.
2038
2137
:param report_activity: Call this as bytes are read, see
2039
2138
Transport._report_activity
2042
2141
byte_count = len(bytes)
2142
view = memoryview(bytes)
2043
2143
while sent_total < byte_count:
2045
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2046
except socket.error, e:
2145
sent = sock.send(view[sent_total:sent_total+MAX_SOCKET_CHUNK])
2146
except (socket.error, IOError) as e:
2147
if e.args[0] in _end_of_stream_errors:
2148
raise errors.ConnectionReset(
2149
"Error trying to write to socket", e)
2047
2150
if e.args[0] != errno.EINTR:
2154
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2050
2156
sent_total += sent
2051
report_activity(sent, 'write')
2157
if report_activity is not None:
2158
report_activity(sent, 'write')
2161
def connect_socket(address):
2162
# Slight variation of the socket.create_connection() function (provided by
2163
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2164
# provide it for previous python versions. Also, we don't use the timeout
2165
# parameter (provided by the python implementation) so we don't implement
2167
err = socket.error('getaddrinfo returns an empty list')
2168
host, port = address
2169
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2170
af, socktype, proto, canonname, sa = res
2173
sock = socket.socket(af, socktype, proto)
2177
except socket.error as e:
2179
# 'err' is now the most recent error
2180
if sock is not None:
2054
2185
def dereference_path(path):
2082
2213
If and when pkg_resources becomes a standard library, this routine
2083
2214
can delegate to it.
2085
# Check package name is within bzrlib
2086
if package == "bzrlib":
2216
# Check package name is within breezy
2217
if package == "breezy":
2087
2218
resource_relpath = resource_name
2088
elif package.startswith("bzrlib."):
2089
package = package[len("bzrlib."):].replace('.', os.sep)
2219
elif package.startswith("breezy."):
2220
package = package[len("breezy."):].replace('.', os.sep)
2090
2221
resource_relpath = pathjoin(package, resource_name)
2092
raise errors.BzrError('resource package %s not in bzrlib' % package)
2223
raise errors.BzrError('resource package %s not in breezy' % package)
2094
2225
# Map the resource to a file and read its contents
2095
base = dirname(bzrlib.__file__)
2226
base = dirname(breezy.__file__)
2096
2227
if getattr(sys, 'frozen', None): # bzr.exe
2097
2228
base = abspath(pathjoin(base, '..', '..'))
2098
filename = pathjoin(base, resource_relpath)
2099
return open(filename, 'rU').read()
2229
with open(pathjoin(base, resource_relpath), "rU") as f:
2102
2232
def file_kind_from_stat_mode_thunk(mode):
2103
2233
global file_kind_from_stat_mode
2104
2234
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2106
from bzrlib._readdir_pyx import UTF8DirReader
2236
from ._readdir_pyx import UTF8DirReader
2107
2237
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2108
except ImportError, e:
2238
except ImportError as e:
2109
2239
# This is one time where we won't warn that an extension failed to
2110
2240
# load. The extension is never available on Windows anyway.
2111
from bzrlib._readdir_py import (
2241
from ._readdir_py import (
2112
2242
_kind_from_mode as file_kind_from_stat_mode
2114
2244
return file_kind_from_stat_mode(mode)
2115
2245
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2247
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2251
except OSError as e:
2122
2252
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2253
raise errors.NoSuchFile(f)
2256
def file_kind(f, _lstat=os.lstat):
2257
stat_value = file_stat(f, _lstat)
2258
return file_kind_from_stat_mode(stat_value.st_mode)
2127
2260
def until_no_eintr(f, *a, **kw):
2128
2261
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2263
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2264
if EINTR does occur. This is typically only true for low-level operations
2132
2265
like os.read. If in any doubt, don't use this.
2134
2267
Keep in mind that this is not a complete solution to EINTR. There is
2135
2268
probably code in the Python standard library and other dependencies that
2136
2269
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
2270
that signal). So this function can reduce the impact for IO that breezy
2138
2271
directly controls, but it is not a complete solution.
2140
2273
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2143
2276
return f(*a, **kw)
2144
except (IOError, OSError), e:
2277
except (IOError, OSError) as e:
2145
2278
if e.errno == errno.EINTR:
2150
def re_compile_checked(re_string, flags=0, where=""):
2151
"""Return a compiled re, or raise a sensible error.
2153
This should only be used when compiling user-supplied REs.
2155
:param re_string: Text form of regular expression.
2156
:param flags: eg re.IGNORECASE
2157
:param where: Message explaining to the user the context where
2158
it occurred, eg 'log search filter'.
2160
# from https://bugs.launchpad.net/bzr/+bug/251352
2162
re_obj = re.compile(re_string, flags)
2167
where = ' in ' + where
2168
# despite the name 'error' is a type
2169
raise errors.BzrCommandError('Invalid regular expression%s: %r: %s'
2170
% (where, re_string, e))
2173
2283
if sys.platform == "win32":
2176
2286
return msvcrt.getch()
2181
2291
fd = sys.stdin.fileno()
2182
2292
settings = termios.tcgetattr(fd)
2187
2297
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2300
if sys.platform.startswith('linux'):
2192
2301
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
2303
return os.sysconf('SC_NPROCESSORS_ONLN')
2304
except (ValueError, OSError, AttributeError):
2199
2306
elif sys.platform == 'darwin':
2200
2307
def _local_concurrency():
2201
2308
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2309
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2310
elif "bsd" in sys.platform:
2204
2311
def _local_concurrency():
2205
2312
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2313
stdout=subprocess.PIPE).communicate()[0]
2302
2414
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2416
open_file = open
2419
def available_backup_name(base, exists):
2420
"""Find a non-existing backup file name.
2422
This will *not* create anything, this only return a 'free' entry. This
2423
should be used for checking names in a directory below a locked
2424
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2425
Leap) and generally discouraged.
2427
:param base: The base name.
2429
:param exists: A callable returning True if the path parameter exists.
2432
name = "%s.~%d~" % (base, counter)
2435
name = "%s.~%d~" % (base, counter)
2439
def set_fd_cloexec(fd):
2440
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2441
support for this is not available.
2445
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2446
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2447
except (ImportError, AttributeError):
2448
# Either the fcntl module or specific constants are not present
2452
def find_executable_on_path(name):
2453
"""Finds an executable on the PATH.
2455
On Windows, this will try to append each extension in the PATHEXT
2456
environment variable to the name, if it cannot be found with the name
2459
:param name: The base name of the executable.
2460
:return: The path to the executable found or None.
2462
if sys.platform == 'win32':
2463
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2464
exts = [ext.lower() for ext in exts]
2465
base, ext = os.path.splitext(name)
2467
if ext.lower() not in exts:
2473
path = os.environ.get('PATH')
2474
if path is not None:
2475
path = path.split(os.pathsep)
2478
f = os.path.join(d, name) + ext
2479
if os.access(f, os.X_OK):
2481
if sys.platform == 'win32':
2482
app_path = win32utils.get_app_path(name)
2483
if app_path != name:
2488
def _posix_is_local_pid_dead(pid):
2489
"""True if pid doesn't correspond to live process on this machine"""
2491
# Special meaning of unix kill: just check if it's there.
2493
except OSError as e:
2494
if e.errno == errno.ESRCH:
2495
# On this machine, and really not found: as sure as we can be
2498
elif e.errno == errno.EPERM:
2499
# exists, though not ours
2502
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2503
# Don't really know.
2506
# Exists and our process: not dead.
2509
if sys.platform == "win32":
2510
is_local_pid_dead = win32utils.is_local_pid_dead
2512
is_local_pid_dead = _posix_is_local_pid_dead
2514
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2515
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2516
if getattr(errno, name, None) is not None]
2519
def fdatasync(fileno):
2520
"""Flush file contents to disk if possible.
2522
:param fileno: Integer OS file handle.
2523
:raises TransportNotPossible: If flushing to disk is not possible.
2525
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2529
except IOError as e:
2530
# See bug #1075108, on some platforms fdatasync exists, but can
2531
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2532
# and reduce the chance of corruption-on-powerloss situations. It
2533
# is not a mandatory call, so it is ok to suppress failures.
2534
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2535
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2539
def ensure_empty_directory_exists(path, exception_class):
2540
"""Make sure a local directory exists and is empty.
2542
If it does not exist, it is created. If it exists and is not empty, an
2543
instance of exception_class is raised.
2547
except OSError as e:
2548
if e.errno != errno.EEXIST:
2550
if os.listdir(path) != []:
2551
raise exception_class(path)
2554
def is_environment_error(evalue):
2555
"""True if exception instance is due to a process environment issue
2557
This includes OSError and IOError, but also other errors that come from
2558
the operating system or core libraries but are not subclasses of those.
2560
if isinstance(evalue, (EnvironmentError, select.error)):
2562
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):