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
27
from .lazy_import import lazy_import
25
from bzrlib.lazy_import import lazy_import
28
26
lazy_import(globals(), """
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27
from datetime import datetime
30
from datetime import timedelta
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from ntpath import (abspath as _nt_abspath,
31
normpath as _nt_normpath,
32
realpath as _nt_realpath,
33
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
45
from tempfile import mkdtemp
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from tempfile import (
54
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
63
if sys.version_info < (2, 5):
64
import md5 as _mod_md5
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import sha as _mod_sha
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from bzrlib import symbol_versioning
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# Cross platform wall-clock time functionality with decent resolution.
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99
def get_unicode_argv():
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user_encoding = get_user_encoding()
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return [a.decode(user_encoding) for a in sys.argv[1:]]
98
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except UnicodeDecodeError:
99
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
100
"application locale.").format(a, user_encoding))
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raise errors.BzrError(("Parameter '%r' is unsupported by the current "
103
108
def make_readonly(filename):
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"""Make a filename read-only."""
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mod = os.lstat(filename).st_mode
106
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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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116
def make_writable(filename):
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117
mod = os.lstat(filename).st_mode
113
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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.
120
# 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:
127
# 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" % (
120
os.chmod(filename, mod)
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123
def minimum_path_selection(paths):
246
232
file_existed = False
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rename_func(new, tmp_name)
249
except (errors.NoSuchFile,) as e:
235
except (errors.NoSuchFile,), e:
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238
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
253
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# function raises an IOError with errno is None when a rename fails.
254
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# This then gets caught here.
255
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if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
257
except Exception as e:
258
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if (getattr(e, 'errno', None) is None
259
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or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
262
248
file_existed = True
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# This may throw an exception, in which case success will
268
rename_func(old, new)
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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
254
# This may throw an exception, in which case success will
256
rename_func(old, new)
258
except (IOError, OSError), e:
259
# source and target may be aliases of each other (e.g. on a
260
# case-insensitive filesystem), so we may have accidentally renamed
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()):
265
# source and target are the same file on a case-insensitive
266
# filesystem, so we don't generate an exception
283
270
# If the file used to exist, rename it back into place
286
273
unlink_func(tmp_name)
288
275
rename_func(tmp_name, new)
276
if failure_exc is not None:
277
raise failure_exc[0], failure_exc[1], failure_exc[2]
291
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# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
292
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# choke on a Unicode string containing a relative path if
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
284
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
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285
def _posix_abspath(path):
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286
# jam 20060426 rather than encoding to fsencoding
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# copy posixpath.abspath, but use os.getcwdu instead
298
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if not posixpath.isabs(path):
299
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path = posixpath.join(getcwd(), path)
300
return _posix_normpath(path)
290
return posixpath.normpath(path)
303
293
def _posix_realpath(path):
304
294
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))
362
297
def _win32_fixdrive(path):
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298
"""Force drive letters to be consistent.
368
303
running python.exe under cmd.exe return capital C:\\
369
304
running win32 python inside a cygwin shell returns lowercase c:\\
371
drive, path = ntpath.splitdrive(path)
306
drive, path = _nt_splitdrive(path)
372
307
return drive.upper() + path
375
310
def _win32_abspath(path):
376
# Real ntpath.abspath doesn't have a problem with a unicode cwd
377
return _win32_fixdrive(ntpath.abspath(unicode(path)).replace('\\', '/'))
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('\\', '/'))
380
342
def _win32_realpath(path):
381
# Real ntpath.realpath doesn't have a problem with a unicode cwd
382
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
343
# Real _nt_realpath doesn't have a problem with a unicode cwd
344
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
385
347
def _win32_pathjoin(*args):
386
return ntpath.join(*args).replace('\\', '/')
348
return _nt_join(*args).replace('\\', '/')
389
351
def _win32_normpath(path):
390
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
393
355
def _win32_getcwd():
394
return _win32_fixdrive(_getcwd().replace('\\', '/'))
356
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
397
359
def _win32_mkdtemp(*args, **kwargs):
398
360
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
401
371
def _win32_rename(old, new):
402
372
"""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)
419
399
def _mac_getcwd():
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)
400
return unicodedata.normalize('NFC', os.getcwdu())
453
403
# Default is to just use the python builtins, but these can be rebound on
454
404
# particular platforms.
455
405
abspath = _posix_abspath
456
406
realpath = _posix_realpath
457
407
pathjoin = os.path.join
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
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
463
411
dirname = os.path.dirname
464
412
basename = os.path.basename
465
413
split = os.path.split
466
414
splitext = os.path.splitext
467
# These were already lazily imported into local scope
415
# These were already imported into local scope
468
416
# mkdtemp = tempfile.mkdtemp
469
417
# rmtree = shutil.rmtree
477
419
MIN_ABS_PATHLENGTH = 1
480
422
if sys.platform == 'win32':
481
abspath = _win32_abspath
423
if win32utils.winver == 'Windows 98':
424
abspath = _win98_abspath
426
abspath = _win32_abspath
482
427
realpath = _win32_realpath
483
428
pathjoin = _win32_pathjoin
484
429
normpath = _win32_normpath
485
430
getcwd = _win32_getcwd
486
431
mkdtemp = _win32_mkdtemp
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
432
rename = _win32_rename
497
434
MIN_ABS_PATHLENGTH = 3
537
471
On my standard US Windows XP, the preferred encoding is
538
472
cp1252, but the console is cp437
540
:param trace: If True trace the selected encoding via mutter().
542
from .trace import mutter
474
from bzrlib.trace import mutter
543
475
output_encoding = getattr(sys.stdout, 'encoding', None)
544
476
if not output_encoding:
545
477
input_encoding = getattr(sys.stdin, 'encoding', None)
546
478
if not input_encoding:
547
479
output_encoding = get_user_encoding()
549
mutter('encoding stdout as osutils.get_user_encoding() %r',
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
552
483
output_encoding = input_encoding
554
mutter('encoding stdout as sys.stdin encoding %r',
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
558
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
559
487
if output_encoding == 'cp0':
560
488
# invalid encoding (cp0 means 'no codepage' on Windows)
561
489
output_encoding = get_user_encoding()
563
mutter('cp0 is invalid encoding.'
490
mutter('cp0 is invalid encoding.'
564
491
' encoding stdout as osutils.get_user_encoding() %r',
568
495
codecs.lookup(output_encoding)
569
496
except LookupError:
570
sys.stderr.write('brz: warning:'
497
sys.stderr.write('bzr: warning:'
571
498
' unknown terminal encoding %s.\n'
572
499
' Using encoding %s instead.\n'
573
500
% (output_encoding, get_user_encoding())
882
798
(date_fmt, tt, offset_str) = \
883
799
_format_date(t, offset, timezone, date_fmt, show_offset)
884
800
date_str = time.strftime(date_fmt, tt)
885
if not isinstance(date_str, text_type):
801
if not isinstance(date_str, unicode):
886
802
date_str = date_str.decode(get_user_encoding(), 'replace')
887
803
return date_str + offset_str
890
806
def _format_date(t, offset, timezone, date_fmt, show_offset):
891
807
if timezone == 'utc':
894
810
elif timezone == 'original':
895
811
if offset is None:
897
tt = gmtime(t + offset)
813
tt = time.gmtime(t + offset)
898
814
elif timezone == 'local':
899
815
tt = time.localtime(t)
900
816
offset = local_time_offset(t)
966
882
"""Return size of given open file."""
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":
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
979
except NotImplementedError:
896
rand_bytes = file('/dev/urandom', 'rb').read
897
# Otherwise, use this hack as a last resort
898
except (IOError, OSError):
980
899
# not well seeded, but better than nothing
981
900
def rand_bytes(n):
1054
970
implementation should be loaded instead::
1057
>>> import breezy._fictional_extension_pyx
973
>>> import bzrlib._fictional_extension_pyx
1058
974
>>> except ImportError, e:
1059
>>> breezy.osutils.failed_to_load_extension(e)
1060
>>> import breezy._fictional_extension_py
975
>>> bzrlib.osutils.failed_to_load_extension(e)
976
>>> import bzrlib._fictional_extension_py
1062
978
# NB: This docstring is just an example, not a doctest, because doctest
1063
979
# currently can't cope with the use of lazy imports in this namespace --
1066
982
# This currently doesn't report the failure at the time it occurs, because
1067
983
# they tend to happen very early in startup when we can't check config
1068
984
# files etc, and also we want to report all failures but not spam the user
1069
985
# with 10 warnings.
986
from bzrlib import trace
1070
987
exception_str = str(exception)
1071
988
if exception_str not in _extension_load_failures:
1072
989
trace.mutter("failed to load compiled extension: %s" % exception_str)
1132
1049
os.link(src, dest)
1133
except (OSError, IOError) as e:
1050
except (OSError, IOError), e:
1134
1051
if e.errno != errno.EXDEV:
1136
1053
shutil.copyfile(src, dest)
1139
1056
def delete_any(path):
1140
"""Delete a file, symlink or directory.
1057
"""Delete a file, symlink or directory.
1142
1059
Will delete even if readonly.
1145
1062
_delete_file_or_dir(path)
1146
except (OSError, IOError) as e:
1063
except (OSError, IOError), e:
1147
1064
if e.errno in (errno.EPERM, errno.EACCES):
1148
1065
# make writable and try again
1333
1250
# but for now, we haven't optimized...
1334
1251
return [canonical_relpath(base, p) for p in paths]
1337
def decode_filename(filename):
1338
"""Decode the filename using the filesystem encoding
1340
If it is unicode, it is returned.
1341
Otherwise it is decoded from the the filesystem's encoding. If decoding
1342
fails, a errors.BadFilenameEncoding exception is raised.
1344
if isinstance(filename, text_type):
1347
return filename.decode(_fs_enc)
1348
except UnicodeDecodeError:
1349
raise errors.BadFilenameEncoding(filename, _fs_enc)
1352
1253
def safe_unicode(unicode_or_utf8_string):
1353
1254
"""Coerce unicode_or_utf8_string into unicode.
1383
1284
return unicode_or_utf8_string.encode('utf-8')
1386
def safe_revision_id(unicode_or_utf8_string):
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):
1387
1293
"""Revision ids should now be utf8, but at one point they were unicode.
1389
1295
: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
1391
1298
:return: None or a utf8 revision id.
1393
1300
if (unicode_or_utf8_string is None
1394
1301
or unicode_or_utf8_string.__class__ == str):
1395
1302
return unicode_or_utf8_string
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):
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):
1402
1314
"""File ids should now be utf8, but at one point they were unicode.
1404
1316
This is the same as safe_utf8, except it uses the cached encode functions
1515
1424
None is returned if the width can't established precisely.
1518
- if BRZ_COLUMNS is set, returns its value
1427
- if BZR_COLUMNS is set, returns its value
1519
1428
- if there is no controlling terminal, returns None
1520
- query the OS, if the queried size has changed since the last query,
1522
1429
- if COLUMNS is set, returns its value,
1523
- if the OS has a value (even though it's never changed), return its value.
1525
1431
From there, we need to query the OS to get the size of the controlling
1528
On Unices we query the OS by:
1529
1435
- get termios.TIOCGWINSZ
1530
1436
- if an error occurs or a negative value is obtained, returns None
1532
On Windows we query the OS by:
1533
1440
- win32utils.get_console_size() decides,
1534
1441
- 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
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
1444
# If BZR_COLUMNS is set, take it, user is always right
1552
width = int(os.environ['BRZ_COLUMNS'])
1446
return int(os.environ['BZR_COLUMNS'])
1553
1447
except (KeyError, ValueError):
1555
if width is not None:
1561
1450
isatty = getattr(sys.stdout, 'isatty', None)
1562
if isatty is None or not isatty():
1563
# Don't guess, setting BRZ_COLUMNS is the recommended way to override.
1451
if isatty is None or not isatty():
1452
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
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.
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))
1584
1459
return int(os.environ['COLUMNS'])
1585
1460
except (KeyError, ValueError):
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:
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1593
# The width could not be determined.
1597
1471
def _win32_terminal_size(width, height):
1624
1498
_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
1627
1526
def supports_executable():
1628
1527
return sys.platform != "win32"
1813
1712
global _selected_dir_reader
1814
1713
if _selected_dir_reader is None:
1815
if sys.platform == "win32":
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
1817
from ._walkdirs_win32 import Win32ReadDir
1722
from bzrlib._walkdirs_win32 import Win32ReadDir
1818
1723
_selected_dir_reader = Win32ReadDir()
1819
1724
except ImportError:
1821
elif _fs_enc in ('utf-8', 'ascii'):
1726
elif fs_encoding in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1727
# ANSI_X3.4-1968 is a form of ASCII
1823
from ._readdir_pyx import UTF8DirReader
1729
from bzrlib._readdir_pyx import UTF8DirReader
1824
1730
_selected_dir_reader = UTF8DirReader()
1825
except ImportError as e:
1731
except ImportError, e:
1826
1732
failed_to_load_extension(e)
1983
1886
_cached_user_encoding = None
1986
def get_user_encoding():
1889
def get_user_encoding(use_cache=True):
1987
1890
"""Find out what the preferred user encoding is.
1989
1892
This is generally the encoding that is used for command line parameters
1990
1893
and file contents. This may be different from the terminal encoding
1991
1894
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)
1993
1900
:return: A string defining the preferred user encoding
1995
1902
global _cached_user_encoding
1996
if _cached_user_encoding is not None:
1903
if _cached_user_encoding is not None and use_cache:
1997
1904
return _cached_user_encoding
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)
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'
2006
# GZ 2011-12-19: On windows could call GetACP directly instead.
2007
user_encoding = locale.getpreferredencoding(False)
2010
user_encoding = codecs.lookup(user_encoding).name
2012
if user_encoding not in ("", "cp0"):
2013
sys.stderr.write('brz: warning:'
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:'
2014
1950
' unknown encoding %s.'
2015
1951
' Continuing with ascii encoding.\n'
2016
1952
% 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
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = user_encoding
2030
1959
return user_encoding
2033
def get_diff_header_encoding():
2034
return get_terminal_encoding()
2037
1962
def get_host_name():
2038
1963
"""Return the current unicode host name.
2112
2028
def send_all(sock, bytes, report_activity=None):
2113
2029
"""Send all bytes on a socket.
2115
2031
Breaks large blocks in smaller chunks to avoid buffering limitations on
2116
2032
some platforms, and catches EINTR which may be thrown if the send is
2117
2033
interrupted by a signal.
2119
2035
This is preferred to socket.sendall(), because it avoids portability bugs
2120
2036
and provides activity reporting.
2122
2038
:param report_activity: Call this as bytes are read, see
2123
2039
Transport._report_activity
2126
2042
byte_count = len(bytes)
2127
view = memoryview(bytes)
2128
2043
while sent_total < byte_count:
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)
2045
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2046
except socket.error, e:
2135
2047
if e.args[0] != errno.EINTR:
2139
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2141
2050
sent_total += sent
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:
2051
report_activity(sent, 'write')
2169
2054
def dereference_path(path):
2197
2082
If and when pkg_resources becomes a standard library, this routine
2198
2083
can delegate to it.
2200
# Check package name is within breezy
2201
if package == "breezy":
2085
# Check package name is within bzrlib
2086
if package == "bzrlib":
2202
2087
resource_relpath = resource_name
2203
elif package.startswith("breezy."):
2204
package = package[len("breezy."):].replace('.', os.sep)
2088
elif package.startswith("bzrlib."):
2089
package = package[len("bzrlib."):].replace('.', os.sep)
2205
2090
resource_relpath = pathjoin(package, resource_name)
2207
raise errors.BzrError('resource package %s not in breezy' % package)
2092
raise errors.BzrError('resource package %s not in bzrlib' % package)
2209
2094
# Map the resource to a file and read its contents
2210
base = dirname(breezy.__file__)
2095
base = dirname(bzrlib.__file__)
2211
2096
if getattr(sys, 'frozen', None): # bzr.exe
2212
2097
base = abspath(pathjoin(base, '..', '..'))
2213
f = file(pathjoin(base, resource_relpath), "rU")
2098
filename = pathjoin(base, resource_relpath)
2099
return open(filename, 'rU').read()
2219
2102
def file_kind_from_stat_mode_thunk(mode):
2220
2103
global file_kind_from_stat_mode
2221
2104
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2223
from ._readdir_pyx import UTF8DirReader
2106
from bzrlib._readdir_pyx import UTF8DirReader
2224
2107
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2225
except ImportError as e:
2108
except ImportError, e:
2226
2109
# This is one time where we won't warn that an extension failed to
2227
2110
# load. The extension is never available on Windows anyway.
2228
from ._readdir_py import (
2111
from bzrlib._readdir_py import (
2229
2112
_kind_from_mode as file_kind_from_stat_mode
2231
2114
return file_kind_from_stat_mode(mode)
2232
2115
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2234
def file_stat(f, _lstat=os.lstat):
2118
def file_kind(f, _lstat=os.lstat):
2238
except OSError as e:
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2239
2122
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2240
2123
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)
2247
2127
def until_no_eintr(f, *a, **kw):
2248
2128
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2250
2130
WARNING: you must be certain that it is safe to retry the call repeatedly
2251
2131
if EINTR does occur. This is typically only true for low-level operations
2252
2132
like os.read. If in any doubt, don't use this.
2254
2134
Keep in mind that this is not a complete solution to EINTR. There is
2255
2135
probably code in the Python standard library and other dependencies that
2256
2136
may encounter EINTR if a signal arrives (and there is signal handler for
2257
that signal). So this function can reduce the impact for IO that breezy
2137
that signal). So this function can reduce the impact for IO that bzrlib
2258
2138
directly controls, but it is not a complete solution.
2260
2140
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2263
2143
return f(*a, **kw)
2264
except (IOError, OSError) as e:
2144
except (IOError, OSError), e:
2265
2145
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))
2270
2173
if sys.platform == "win32":
2273
2176
return msvcrt.getch()
2278
2181
fd = sys.stdin.fileno()
2279
2182
settings = termios.tcgetattr(fd)
2284
2187
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2287
if sys.platform.startswith('linux'):
2191
if sys.platform == 'linux2':
2288
2192
def _local_concurrency():
2290
return os.sysconf('SC_NPROCESSORS_ONLN')
2291
except (ValueError, OSError, AttributeError):
2194
prefix = 'processor'
2195
for line in file('/proc/cpuinfo', 'rb'):
2196
if line.startswith(prefix):
2197
concurrency = int(line[line.find(':')+1:]) + 1
2293
2199
elif sys.platform == 'darwin':
2294
2200
def _local_concurrency():
2295
2201
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2296
2202
stdout=subprocess.PIPE).communicate()[0]
2297
elif "bsd" in sys.platform:
2203
elif sys.platform[0:7] == 'freebsd':
2298
2204
def _local_concurrency():
2299
2205
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2300
2206
stdout=subprocess.PIPE).communicate()[0]
2325
2231
if _cached_local_concurrency is not None and use_cache:
2326
2232
return _cached_local_concurrency
2328
concurrency = os.environ.get('BRZ_CONCURRENCY', None)
2234
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2329
2235
if concurrency is None:
2331
import multiprocessing
2332
concurrency = multiprocessing.cpu_count()
2333
except (ImportError, NotImplementedError):
2334
# multiprocessing is only available on Python >= 2.6
2335
# and multiprocessing.cpu_count() isn't implemented on all
2338
concurrency = _local_concurrency()
2339
except (OSError, IOError):
2237
concurrency = _local_concurrency()
2238
except (OSError, IOError):
2342
2241
concurrency = int(concurrency)
2343
2242
except (TypeError, ValueError):
2403
2302
return os.fdopen(os.open(filename, flags), mode, bufsize)
2405
2304
open_file = open
2408
def available_backup_name(base, exists):
2409
"""Find a non-existing backup file name.
2411
This will *not* create anything, this only return a 'free' entry. This
2412
should be used for checking names in a directory below a locked
2413
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2414
Leap) and generally discouraged.
2416
:param base: The base name.
2418
:param exists: A callable returning True if the path parameter exists.
2421
name = "%s.~%d~" % (base, counter)
2424
name = "%s.~%d~" % (base, counter)
2428
def set_fd_cloexec(fd):
2429
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2430
support for this is not available.
2434
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2435
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2436
except (ImportError, AttributeError):
2437
# Either the fcntl module or specific constants are not present
2441
def find_executable_on_path(name):
2442
"""Finds an executable on the PATH.
2444
On Windows, this will try to append each extension in the PATHEXT
2445
environment variable to the name, if it cannot be found with the name
2448
:param name: The base name of the executable.
2449
:return: The path to the executable found or None.
2451
if sys.platform == 'win32':
2452
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2453
exts = [ext.lower() for ext in exts]
2454
base, ext = os.path.splitext(name)
2456
if ext.lower() not in exts:
2462
path = os.environ.get('PATH')
2463
if path is not None:
2464
path = path.split(os.pathsep)
2467
f = os.path.join(d, name) + ext
2468
if os.access(f, os.X_OK):
2470
if sys.platform == 'win32':
2471
app_path = win32utils.get_app_path(name)
2472
if app_path != name:
2477
def _posix_is_local_pid_dead(pid):
2478
"""True if pid doesn't correspond to live process on this machine"""
2480
# Special meaning of unix kill: just check if it's there.
2482
except OSError as e:
2483
if e.errno == errno.ESRCH:
2484
# On this machine, and really not found: as sure as we can be
2487
elif e.errno == errno.EPERM:
2488
# exists, though not ours
2491
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2492
# Don't really know.
2495
# Exists and our process: not dead.
2498
if sys.platform == "win32":
2499
is_local_pid_dead = win32utils.is_local_pid_dead
2501
is_local_pid_dead = _posix_is_local_pid_dead
2503
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2504
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2505
if getattr(errno, name, None) is not None]
2508
def fdatasync(fileno):
2509
"""Flush file contents to disk if possible.
2511
:param fileno: Integer OS file handle.
2512
:raises TransportNotPossible: If flushing to disk is not possible.
2514
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2518
except IOError as e:
2519
# See bug #1075108, on some platforms fdatasync exists, but can
2520
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2521
# and reduce the chance of corruption-on-powerloss situations. It
2522
# is not a mandatory call, so it is ok to suppress failures.
2523
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2524
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2528
def ensure_empty_directory_exists(path, exception_class):
2529
"""Make sure a local directory exists and is empty.
2531
If it does not exist, it is created. If it exists and is not empty, an
2532
instance of exception_class is raised.
2536
except OSError as e:
2537
if e.errno != errno.EEXIST:
2539
if os.listdir(path) != []:
2540
raise exception_class(path)
2543
def is_environment_error(evalue):
2544
"""True if exception instance is due to a process environment issue
2546
This includes OSError and IOError, but also other errors that come from
2547
the operating system or core libraries but are not subclasses of those.
2549
if isinstance(evalue, (EnvironmentError, select.error)):
2551
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):