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
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from stat import S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE
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from bzrlib.lazy_import import lazy_import
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from .lazy_import import lazy_import
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lazy_import(globals(), """
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from datetime import datetime
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from ntpath import (abspath as _nt_abspath,
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normpath as _nt_normpath,
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realpath as _nt_realpath,
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splitdrive as _nt_splitdrive,
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from datetime import timedelta
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# We need to import both shutil and rmtree as we export the later on posix
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# and need the former on windows
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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
43
from tempfile import (
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from tempfile import mkdtemp
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from breezy.i18n import gettext
56
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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92
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:]]
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98
except UnicodeDecodeError:
104
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
99
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
100
"application locale.").format(a, user_encoding))
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103
def make_readonly(filename):
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"""Make a filename read-only."""
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mod = os.lstat(filename).st_mode
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)
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111
def make_writable(filename):
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mod = os.lstat(filename).st_mode
118
113
if not stat.S_ISLNK(mod):
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os.chmod(filename, mod)
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chmod_if_possible(filename, mod)
118
def chmod_if_possible(filename, mode):
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# Set file mode if that can be safely done.
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# Sometimes even on unix the filesystem won't allow it - see
121
# https://bugs.launchpad.net/bzr/+bug/606537
123
# It is probably faster to just do the chmod, rather than
124
# doing a stat, and then trying to compare
125
os.chmod(filename, mode)
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except (IOError, OSError) as e:
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" % (
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137
def minimum_path_selection(paths):
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file_existed = False
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rename_func(new, tmp_name)
235
except (errors.NoSuchFile,), e:
249
except (errors.NoSuchFile,) as e:
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# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
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# function raises an IOError with errno is None when a rename fails.
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# This then gets caught here.
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if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
257
except Exception as e:
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if (getattr(e, 'errno', None) is None
245
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or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
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file_existed = True
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# This may throw an exception, in which case success will
256
rename_func(old, new)
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()
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if (file_existed and e.errno in (None, errno.ENOENT)
264
and old.lower() == new.lower()):
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# source and target are the same file on a case-insensitive
266
# filesystem, so we don't generate an exception
266
# This may throw an exception, in which case success will
268
rename_func(old, new)
270
except (IOError, OSError) as e:
271
# source and target may be aliases of each other (e.g. on a
272
# case-insensitive filesystem), so we may have accidentally renamed
273
# source by when we tried to rename target
274
if (file_existed and e.errno in (None, errno.ENOENT)
275
and old.lower() == new.lower()):
276
# source and target are the same file on a case-insensitive
277
# filesystem, so we don't generate an exception
270
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# If the file used to exist, rename it back into place
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unlink_func(tmp_name)
275
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rename_func(tmp_name, new)
276
if failure_exc is not None:
277
raise failure_exc[0], failure_exc[1], failure_exc[2]
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# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
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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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def _posix_abspath(path):
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# jam 20060426 rather than encoding to fsencoding
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# copy posixpath.abspath, but use os.getcwdu instead
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if not posixpath.isabs(path):
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path = posixpath.join(getcwd(), path)
290
return posixpath.normpath(path)
300
return _posix_normpath(path)
293
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def _posix_realpath(path):
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return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
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)
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()
352
user_encoding = get_user_encoding()
354
return name.decode(user_encoding)
355
except UnicodeDecodeError:
356
raise errors.BzrError("Encoding of username %r is unsupported by %s "
357
"application locale." % (name, user_encoding))
297
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def _win32_fixdrive(path):
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"""Force drive letters to be consistent.
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# /path => C:/path
327
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path = unicode(path)
328
391
# check for absolute path
329
drive = _nt_splitdrive(path)[0]
392
drive = ntpath.splitdrive(path)[0]
330
393
if drive == '' and path[:2] not in('//','\\\\'):
332
395
# we cannot simply os.path.join cwd and path
333
396
# because os.path.join('C:','/path') produce '/path'
334
397
# and this is incorrect
335
398
if path[:1] in ('/','\\'):
336
cwd = _nt_splitdrive(cwd)[0]
399
cwd = ntpath.splitdrive(cwd)[0]
338
401
path = cwd + '\\' + path
339
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
402
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
342
405
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('\\', '/'))
406
# Real ntpath.realpath doesn't have a problem with a unicode cwd
407
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
347
410
def _win32_pathjoin(*args):
348
return _nt_join(*args).replace('\\', '/')
411
return ntpath.join(*args).replace('\\', '/')
351
414
def _win32_normpath(path):
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
415
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
355
418
def _win32_getcwd():
356
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
419
return _win32_fixdrive(_getcwd().replace('\\', '/'))
359
422
def _win32_mkdtemp(*args, **kwargs):
360
423
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
426
def _win32_rename(old, new):
372
427
"""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
444
def _mac_getcwd():
400
return unicodedata.normalize('NFC', os.getcwdu())
445
return unicodedata.normalize('NFC', _getcwd())
448
def _rename_wrap_exception(rename_func):
449
"""Adds extra information to any exceptions that come from rename().
451
The exception has an updated message and 'old_filename' and 'new_filename'
455
def _rename_wrapper(old, new):
457
rename_func(old, new)
459
detailed_error = OSError(e.errno, e.strerror +
460
" [occurred when renaming '%s' to '%s']" %
462
detailed_error.old_filename = old
463
detailed_error.new_filename = new
466
return _rename_wrapper
469
if sys.version_info > (3,):
475
# Default rename wraps os.rename()
476
rename = _rename_wrap_exception(os.rename)
403
478
# Default is to just use the python builtins, but these can be rebound on
404
479
# particular platforms.
405
480
abspath = _posix_abspath
406
481
realpath = _posix_realpath
407
482
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
483
normpath = _posix_normpath
484
path_from_environ = _posix_path_from_environ
485
_get_home_dir = _posix_get_home_dir
486
getuser_unicode = _posix_getuser_unicode
411
488
dirname = os.path.dirname
412
489
basename = os.path.basename
413
490
split = os.path.split
414
491
splitext = os.path.splitext
415
# These were already imported into local scope
492
# These were already lazily imported into local scope
416
493
# mkdtemp = tempfile.mkdtemp
417
494
# rmtree = shutil.rmtree
419
502
MIN_ABS_PATHLENGTH = 1
471
565
On my standard US Windows XP, the preferred encoding is
472
566
cp1252, but the console is cp437
568
:param trace: If True trace the selected encoding via mutter().
474
from bzrlib.trace import mutter
570
from .trace import mutter
475
571
output_encoding = getattr(sys.stdout, 'encoding', None)
476
572
if not output_encoding:
477
573
input_encoding = getattr(sys.stdin, 'encoding', None)
478
574
if not input_encoding:
479
575
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
577
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
580
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
582
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
586
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
587
if output_encoding == 'cp0':
488
588
# invalid encoding (cp0 means 'no codepage' on Windows)
489
589
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
591
mutter('cp0 is invalid encoding.'
491
592
' encoding stdout as osutils.get_user_encoding() %r',
495
596
codecs.lookup(output_encoding)
496
597
except LookupError:
497
sys.stderr.write('bzr: warning:'
598
sys.stderr.write('brz: warning:'
498
599
' unknown terminal encoding %s.\n'
499
600
' Using encoding %s instead.\n'
500
601
% (output_encoding, get_user_encoding())
798
910
(date_fmt, tt, offset_str) = \
799
911
_format_date(t, offset, timezone, date_fmt, show_offset)
800
912
date_str = time.strftime(date_fmt, tt)
801
if not isinstance(date_str, unicode):
913
if not isinstance(date_str, text_type):
802
914
date_str = date_str.decode(get_user_encoding(), 'replace')
803
915
return date_str + offset_str
806
918
def _format_date(t, offset, timezone, date_fmt, show_offset):
807
919
if timezone == 'utc':
810
922
elif timezone == 'original':
811
923
if offset is None:
813
tt = time.gmtime(t + offset)
925
tt = gmtime(t + offset)
814
926
elif timezone == 'local':
815
927
tt = time.localtime(t)
816
928
offset = local_time_offset(t)
882
994
"""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
995
return os.fstat(f.fileno())[stat.ST_SIZE]
998
# Alias os.urandom to support platforms (which?) without /dev/urandom and
999
# override if it doesn't work. Avoid checking on windows where there is
1000
# significant initialisation cost that can be avoided for some bzr calls.
1002
rand_bytes = os.urandom
1004
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):
1007
except NotImplementedError:
899
1008
# not well seeded, but better than nothing
900
1009
def rand_bytes(n):
970
1079
implementation should be loaded instead::
973
>>> import bzrlib._fictional_extension_pyx
1082
>>> import breezy._fictional_extension_pyx
974
1083
>>> except ImportError, e:
975
>>> bzrlib.osutils.failed_to_load_extension(e)
976
>>> import bzrlib._fictional_extension_py
1084
>>> breezy.osutils.failed_to_load_extension(e)
1085
>>> import breezy._fictional_extension_py
978
1087
# NB: This docstring is just an example, not a doctest, because doctest
979
1088
# currently can't cope with the use of lazy imports in this namespace --
982
1091
# This currently doesn't report the failure at the time it occurs, because
983
1092
# they tend to happen very early in startup when we can't check config
984
1093
# files etc, and also we want to report all failures but not spam the user
985
1094
# with 10 warnings.
986
from bzrlib import trace
987
1095
exception_str = str(exception)
988
1096
if exception_str not in _extension_load_failures:
989
1097
trace.mutter("failed to load compiled extension: %s" % exception_str)
1049
1156
os.link(src, dest)
1050
except (OSError, IOError), e:
1157
except (OSError, IOError) as e:
1051
1158
if e.errno != errno.EXDEV:
1053
1160
shutil.copyfile(src, dest)
1056
1163
def delete_any(path):
1057
"""Delete a file, symlink or directory.
1164
"""Delete a file, symlink or directory.
1059
1166
Will delete even if readonly.
1062
1169
_delete_file_or_dir(path)
1063
except (OSError, IOError), e:
1170
except (OSError, IOError) as e:
1064
1171
if e.errno in (errno.EPERM, errno.EACCES):
1065
1172
# make writable and try again
1250
1357
# but for now, we haven't optimized...
1251
1358
return [canonical_relpath(base, p) for p in paths]
1361
def decode_filename(filename):
1362
"""Decode the filename using the filesystem encoding
1364
If it is unicode, it is returned.
1365
Otherwise it is decoded from the the filesystem's encoding. If decoding
1366
fails, a errors.BadFilenameEncoding exception is raised.
1368
if isinstance(filename, text_type):
1371
return filename.decode(_fs_enc)
1372
except UnicodeDecodeError:
1373
raise errors.BadFilenameEncoding(filename, _fs_enc)
1253
1376
def safe_unicode(unicode_or_utf8_string):
1254
1377
"""Coerce unicode_or_utf8_string into unicode.
1284
1407
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):
1410
def safe_revision_id(unicode_or_utf8_string):
1293
1411
"""Revision ids should now be utf8, but at one point they were unicode.
1295
1413
: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
1415
:return: None or a utf8 revision id.
1300
1417
if (unicode_or_utf8_string is None
1301
1418
or unicode_or_utf8_string.__class__ == str):
1302
1419
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):
1420
raise TypeError('Unicode revision ids are no longer supported. '
1421
'Revision id generators should be creating utf8 revision '
1425
def safe_file_id(unicode_or_utf8_string):
1314
1426
"""File ids should now be utf8, but at one point they were unicode.
1316
1428
This is the same as safe_utf8, except it uses the cached encode functions
1424
1539
None is returned if the width can't established precisely.
1427
- if BZR_COLUMNS is set, returns its value
1542
- if BRZ_COLUMNS is set, returns its value
1428
1543
- if there is no controlling terminal, returns None
1544
- query the OS, if the queried size has changed since the last query,
1429
1546
- if COLUMNS is set, returns its value,
1547
- if the OS has a value (even though it's never changed), return its value.
1431
1549
From there, we need to query the OS to get the size of the controlling
1552
On Unices we query the OS by:
1435
1553
- get termios.TIOCGWINSZ
1436
1554
- if an error occurs or a negative value is obtained, returns None
1556
On Windows we query the OS by:
1440
1557
- win32utils.get_console_size() decides,
1441
1558
- returns None on error (provided default value)
1560
# Note to implementors: if changing the rules for determining the width,
1561
# make sure you've considered the behaviour in these cases:
1562
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1563
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1565
# - (add more interesting cases here, if you find any)
1566
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1567
# but we don't want to register a signal handler because it is impossible
1568
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1569
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1570
# 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
1573
# If BRZ_COLUMNS is set, take it, user is always right
1574
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1576
width = int(os.environ['BRZ_COLUMNS'])
1447
1577
except (KeyError, ValueError):
1579
if width is not None:
1450
1585
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.
1586
if isatty is None or not isatty():
1587
# 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))
1591
width, height = os_size = _terminal_size(None, None)
1592
global _first_terminal_size, _terminal_size_state
1593
if _terminal_size_state == 'no_data':
1594
_first_terminal_size = os_size
1595
_terminal_size_state = 'unchanged'
1596
elif (_terminal_size_state == 'unchanged' and
1597
_first_terminal_size != os_size):
1598
_terminal_size_state = 'changed'
1600
# If the OS claims to know how wide the terminal is, and this value has
1601
# ever changed, use that.
1602
if _terminal_size_state == 'changed':
1603
if width is not None and width > 0:
1606
# If COLUMNS is set, use it.
1459
1608
return int(os.environ['COLUMNS'])
1460
1609
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1612
# Finally, use an unchanged size from the OS, if we have one.
1613
if _terminal_size_state == 'unchanged':
1614
if width is not None and width > 0:
1617
# The width could not be determined.
1471
1621
def _win32_terminal_size(width, height):
1498
1648
_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
1651
def supports_executable():
1527
1652
return sys.platform != "win32"
1886
2012
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
2015
def get_user_encoding():
1890
2016
"""Find out what the preferred user encoding is.
1892
2018
This is generally the encoding that is used for command line parameters
1893
2019
and file contents. This may be different from the terminal encoding
1894
2020
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
2022
:return: A string defining the preferred user encoding
1902
2024
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
2025
if _cached_user_encoding is not None:
1904
2026
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'
2028
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2029
# Use the existing locale settings and call nl_langinfo directly
2030
# rather than going through getpreferredencoding. This avoids
2031
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2032
# possibility of the setlocale call throwing an error.
2033
user_encoding = locale.nl_langinfo(locale.CODESET)
2035
# GZ 2011-12-19: On windows could call GetACP directly instead.
2036
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:'
2039
user_encoding = codecs.lookup(user_encoding).name
2041
if user_encoding not in ("", "cp0"):
2042
sys.stderr.write('brz: warning:'
1950
2043
' unknown encoding %s.'
1951
2044
' Continuing with ascii encoding.\n'
1952
2045
% user_encoding
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = user_encoding
2047
user_encoding = 'ascii'
2049
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2050
if user_encoding == 'ascii':
2051
if sys.platform == 'darwin':
2052
# OSX is special-cased in Python to have a UTF-8 filesystem
2053
# encoding and previously had LANG set here if not present.
2054
user_encoding = 'utf-8'
2055
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2056
# for some other posix platforms as well.
2058
_cached_user_encoding = user_encoding
1959
2059
return user_encoding
2062
def get_diff_header_encoding():
2063
return get_terminal_encoding()
1962
2066
def get_host_name():
1963
2067
"""Return the current unicode host name.
2028
2139
def send_all(sock, bytes, report_activity=None):
2029
2140
"""Send all bytes on a socket.
2031
2142
Breaks large blocks in smaller chunks to avoid buffering limitations on
2032
2143
some platforms, and catches EINTR which may be thrown if the send is
2033
2144
interrupted by a signal.
2035
2146
This is preferred to socket.sendall(), because it avoids portability bugs
2036
2147
and provides activity reporting.
2038
2149
:param report_activity: Call this as bytes are read, see
2039
2150
Transport._report_activity
2042
2153
byte_count = len(bytes)
2154
view = memoryview(bytes)
2043
2155
while sent_total < byte_count:
2045
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2046
except socket.error, e:
2157
sent = sock.send(view[sent_total:sent_total+MAX_SOCKET_CHUNK])
2158
except (socket.error, IOError) as e:
2159
if e.args[0] in _end_of_stream_errors:
2160
raise errors.ConnectionReset(
2161
"Error trying to write to socket", e)
2047
2162
if e.args[0] != errno.EINTR:
2166
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2050
2168
sent_total += sent
2051
report_activity(sent, 'write')
2169
if report_activity is not None:
2170
report_activity(sent, 'write')
2173
def connect_socket(address):
2174
# Slight variation of the socket.create_connection() function (provided by
2175
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2176
# provide it for previous python versions. Also, we don't use the timeout
2177
# parameter (provided by the python implementation) so we don't implement
2179
err = socket.error('getaddrinfo returns an empty list')
2180
host, port = address
2181
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2182
af, socktype, proto, canonname, sa = res
2185
sock = socket.socket(af, socktype, proto)
2189
except socket.error as err:
2190
# 'err' is now the most recent error
2191
if sock is not None:
2054
2196
def dereference_path(path):
2082
2224
If and when pkg_resources becomes a standard library, this routine
2083
2225
can delegate to it.
2085
# Check package name is within bzrlib
2086
if package == "bzrlib":
2227
# Check package name is within breezy
2228
if package == "breezy":
2087
2229
resource_relpath = resource_name
2088
elif package.startswith("bzrlib."):
2089
package = package[len("bzrlib."):].replace('.', os.sep)
2230
elif package.startswith("breezy."):
2231
package = package[len("breezy."):].replace('.', os.sep)
2090
2232
resource_relpath = pathjoin(package, resource_name)
2092
raise errors.BzrError('resource package %s not in bzrlib' % package)
2234
raise errors.BzrError('resource package %s not in breezy' % package)
2094
2236
# Map the resource to a file and read its contents
2095
base = dirname(bzrlib.__file__)
2237
base = dirname(breezy.__file__)
2096
2238
if getattr(sys, 'frozen', None): # bzr.exe
2097
2239
base = abspath(pathjoin(base, '..', '..'))
2098
filename = pathjoin(base, resource_relpath)
2099
return open(filename, 'rU').read()
2240
f = file(pathjoin(base, resource_relpath), "rU")
2102
2246
def file_kind_from_stat_mode_thunk(mode):
2103
2247
global file_kind_from_stat_mode
2104
2248
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2106
from bzrlib._readdir_pyx import UTF8DirReader
2250
from ._readdir_pyx import UTF8DirReader
2107
2251
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2108
except ImportError, e:
2252
except ImportError as e:
2109
2253
# This is one time where we won't warn that an extension failed to
2110
2254
# load. The extension is never available on Windows anyway.
2111
from bzrlib._readdir_py import (
2255
from ._readdir_py import (
2112
2256
_kind_from_mode as file_kind_from_stat_mode
2114
2258
return file_kind_from_stat_mode(mode)
2115
2259
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2261
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2265
except OSError as e:
2122
2266
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2267
raise errors.NoSuchFile(f)
2270
def file_kind(f, _lstat=os.lstat):
2271
stat_value = file_stat(f, _lstat)
2272
return file_kind_from_stat_mode(stat_value.st_mode)
2127
2274
def until_no_eintr(f, *a, **kw):
2128
2275
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2277
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2278
if EINTR does occur. This is typically only true for low-level operations
2132
2279
like os.read. If in any doubt, don't use this.
2134
2281
Keep in mind that this is not a complete solution to EINTR. There is
2135
2282
probably code in the Python standard library and other dependencies that
2136
2283
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
2284
that signal). So this function can reduce the impact for IO that breezy
2138
2285
directly controls, but it is not a complete solution.
2140
2287
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2143
2290
return f(*a, **kw)
2144
except (IOError, OSError), e:
2291
except (IOError, OSError) as e:
2145
2292
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
2297
if sys.platform == "win32":
2176
2300
return msvcrt.getch()
2181
2305
fd = sys.stdin.fileno()
2182
2306
settings = termios.tcgetattr(fd)
2187
2311
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2314
if sys.platform.startswith('linux'):
2192
2315
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
2317
return os.sysconf('SC_NPROCESSORS_ONLN')
2318
except (ValueError, OSError, AttributeError):
2199
2320
elif sys.platform == 'darwin':
2200
2321
def _local_concurrency():
2201
2322
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2323
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2324
elif "bsd" in sys.platform:
2204
2325
def _local_concurrency():
2205
2326
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2327
stdout=subprocess.PIPE).communicate()[0]
2231
2352
if _cached_local_concurrency is not None and use_cache:
2232
2353
return _cached_local_concurrency
2234
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2355
concurrency = os.environ.get('BRZ_CONCURRENCY', None)
2235
2356
if concurrency is None:
2237
concurrency = _local_concurrency()
2238
except (OSError, IOError):
2358
import multiprocessing
2359
concurrency = multiprocessing.cpu_count()
2360
except (ImportError, NotImplementedError):
2361
# multiprocessing is only available on Python >= 2.6
2362
# and multiprocessing.cpu_count() isn't implemented on all
2365
concurrency = _local_concurrency()
2366
except (OSError, IOError):
2241
2369
concurrency = int(concurrency)
2242
2370
except (TypeError, ValueError):
2302
2430
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2432
open_file = open
2435
def available_backup_name(base, exists):
2436
"""Find a non-existing backup file name.
2438
This will *not* create anything, this only return a 'free' entry. This
2439
should be used for checking names in a directory below a locked
2440
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2441
Leap) and generally discouraged.
2443
:param base: The base name.
2445
:param exists: A callable returning True if the path parameter exists.
2448
name = "%s.~%d~" % (base, counter)
2451
name = "%s.~%d~" % (base, counter)
2455
def set_fd_cloexec(fd):
2456
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2457
support for this is not available.
2461
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2462
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2463
except (ImportError, AttributeError):
2464
# Either the fcntl module or specific constants are not present
2468
def find_executable_on_path(name):
2469
"""Finds an executable on the PATH.
2471
On Windows, this will try to append each extension in the PATHEXT
2472
environment variable to the name, if it cannot be found with the name
2475
:param name: The base name of the executable.
2476
:return: The path to the executable found or None.
2478
if sys.platform == 'win32':
2479
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2480
exts = [ext.lower() for ext in exts]
2481
base, ext = os.path.splitext(name)
2483
if ext.lower() not in exts:
2489
path = os.environ.get('PATH')
2490
if path is not None:
2491
path = path.split(os.pathsep)
2494
f = os.path.join(d, name) + ext
2495
if os.access(f, os.X_OK):
2497
if sys.platform == 'win32':
2498
app_path = win32utils.get_app_path(name)
2499
if app_path != name:
2504
def _posix_is_local_pid_dead(pid):
2505
"""True if pid doesn't correspond to live process on this machine"""
2507
# Special meaning of unix kill: just check if it's there.
2509
except OSError as e:
2510
if e.errno == errno.ESRCH:
2511
# On this machine, and really not found: as sure as we can be
2514
elif e.errno == errno.EPERM:
2515
# exists, though not ours
2518
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2519
# Don't really know.
2522
# Exists and our process: not dead.
2525
if sys.platform == "win32":
2526
is_local_pid_dead = win32utils.is_local_pid_dead
2528
is_local_pid_dead = _posix_is_local_pid_dead
2530
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2531
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2532
if getattr(errno, name, None) is not None]
2535
def fdatasync(fileno):
2536
"""Flush file contents to disk if possible.
2538
:param fileno: Integer OS file handle.
2539
:raises TransportNotPossible: If flushing to disk is not possible.
2541
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2545
except IOError as e:
2546
# See bug #1075108, on some platforms fdatasync exists, but can
2547
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2548
# and reduce the chance of corruption-on-powerloss situations. It
2549
# is not a mandatory call, so it is ok to suppress failures.
2550
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2551
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2555
def ensure_empty_directory_exists(path, exception_class):
2556
"""Make sure a local directory exists and is empty.
2558
If it does not exist, it is created. If it exists and is not empty, an
2559
instance of exception_class is raised.
2563
except OSError as e:
2564
if e.errno != errno.EEXIST:
2566
if os.listdir(path) != []:
2567
raise exception_class(path)
2570
def is_environment_error(evalue):
2571
"""True if exception instance is due to a process environment issue
2573
This includes OSError and IOError, but also other errors that come from
2574
the operating system or core libraries but are not subclasses of those.
2576
if isinstance(evalue, (EnvironmentError, select.error)):
2578
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):