14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
from __future__ import absolute_import
20
from stat import S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE
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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
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from tempfile import (
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from tempfile import mkdtemp
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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
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if sys.version_info < (2, 5):
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import md5 as _mod_md5
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import sha as _mod_sha
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from bzrlib import symbol_versioning
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# Cross platform wall-clock time functionality with decent resolution.
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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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except UnicodeDecodeError:
104
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
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raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
100
"application locale.").format(a, user_encoding))
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def make_readonly(filename):
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"""Make a filename read-only."""
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mod = os.lstat(filename).st_mode
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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
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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
123
# It is probably faster to just do the chmod, rather than
124
# 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
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# probably no point warning about it.
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# <https://bugs.launchpad.net/bzr/+bug/606537>
130
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
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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)
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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):
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except Exception as e:
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if (getattr(e, 'errno', None) is None
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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
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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
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# source by when we tried to rename target
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failure_exc = sys.exc_info()
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if (file_existed and e.errno in (None, errno.ENOENT)
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and old.lower() == new.lower()):
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# source and target are the same file on a case-insensitive
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# filesystem, so we don't generate an exception
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# This may throw an exception, in which case success will
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rename_func(old, new)
270
except (IOError, OSError) as e:
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# 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
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# If the file used to exist, rename it back into place
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unlink_func(tmp_name)
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rename_func(tmp_name, new)
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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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292
# choke on a Unicode string containing a relative path if
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
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_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)
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))
297
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def _win32_fixdrive(path):
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"""Force drive letters to be consistent.
303
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running python.exe under cmd.exe return capital C:\\
304
369
running win32 python inside a cygwin shell returns lowercase c:\\
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drive, path = _nt_splitdrive(path)
371
drive, path = ntpath.splitdrive(path)
307
372
return drive.upper() + path
310
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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('\\', '/'))
376
# Real ntpath.abspath doesn't have a problem with a unicode cwd
377
return _win32_fixdrive(ntpath.abspath(unicode(path)).replace('\\', '/'))
342
380
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('\\', '/'))
381
# Real ntpath.realpath doesn't have a problem with a unicode cwd
382
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
347
385
def _win32_pathjoin(*args):
348
return _nt_join(*args).replace('\\', '/')
386
return ntpath.join(*args).replace('\\', '/')
351
389
def _win32_normpath(path):
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
390
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
355
393
def _win32_getcwd():
356
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
394
return _win32_fixdrive(_getcwd().replace('\\', '/'))
359
397
def _win32_mkdtemp(*args, **kwargs):
360
398
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
401
def _win32_rename(old, new):
372
402
"""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
419
def _mac_getcwd():
400
return unicodedata.normalize('NFC', os.getcwdu())
420
return unicodedata.normalize('NFC', _getcwd())
423
def _rename_wrap_exception(rename_func):
424
"""Adds extra information to any exceptions that come from rename().
426
The exception has an updated message and 'old_filename' and 'new_filename'
430
def _rename_wrapper(old, new):
432
rename_func(old, new)
434
detailed_error = OSError(e.errno, e.strerror +
435
" [occurred when renaming '%s' to '%s']" %
437
detailed_error.old_filename = old
438
detailed_error.new_filename = new
441
return _rename_wrapper
444
if sys.version_info > (3,):
450
# Default rename wraps os.rename()
451
rename = _rename_wrap_exception(os.rename)
403
453
# Default is to just use the python builtins, but these can be rebound on
404
454
# particular platforms.
405
455
abspath = _posix_abspath
406
456
realpath = _posix_realpath
407
457
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
458
normpath = _posix_normpath
459
path_from_environ = _posix_path_from_environ
460
_get_home_dir = _posix_get_home_dir
461
getuser_unicode = _posix_getuser_unicode
411
463
dirname = os.path.dirname
412
464
basename = os.path.basename
413
465
split = os.path.split
414
466
splitext = os.path.splitext
415
# These were already imported into local scope
467
# These were already lazily imported into local scope
416
468
# mkdtemp = tempfile.mkdtemp
417
469
# rmtree = shutil.rmtree
419
477
MIN_ABS_PATHLENGTH = 1
422
480
if sys.platform == 'win32':
423
if win32utils.winver == 'Windows 98':
424
abspath = _win98_abspath
426
abspath = _win32_abspath
481
abspath = _win32_abspath
427
482
realpath = _win32_realpath
428
483
pathjoin = _win32_pathjoin
429
484
normpath = _win32_normpath
430
485
getcwd = _win32_getcwd
431
486
mkdtemp = _win32_mkdtemp
432
rename = _win32_rename
487
rename = _rename_wrap_exception(_win32_rename)
489
from . import _walkdirs_win32
493
lstat = _walkdirs_win32.lstat
494
fstat = _walkdirs_win32.fstat
495
wrap_stat = _walkdirs_win32.wrap_stat
434
497
MIN_ABS_PATHLENGTH = 3
471
537
On my standard US Windows XP, the preferred encoding is
472
538
cp1252, but the console is cp437
540
:param trace: If True trace the selected encoding via mutter().
474
from bzrlib.trace import mutter
542
from .trace import mutter
475
543
output_encoding = getattr(sys.stdout, 'encoding', None)
476
544
if not output_encoding:
477
545
input_encoding = getattr(sys.stdin, 'encoding', None)
478
546
if not input_encoding:
479
547
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
549
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
552
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
554
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
558
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
559
if output_encoding == 'cp0':
488
560
# invalid encoding (cp0 means 'no codepage' on Windows)
489
561
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
563
mutter('cp0 is invalid encoding.'
491
564
' encoding stdout as osutils.get_user_encoding() %r',
495
568
codecs.lookup(output_encoding)
496
569
except LookupError:
497
sys.stderr.write('bzr: warning:'
570
sys.stderr.write('brz: warning:'
498
571
' unknown terminal encoding %s.\n'
499
572
' Using encoding %s instead.\n'
500
573
% (output_encoding, get_user_encoding())
798
882
(date_fmt, tt, offset_str) = \
799
883
_format_date(t, offset, timezone, date_fmt, show_offset)
800
884
date_str = time.strftime(date_fmt, tt)
801
if not isinstance(date_str, unicode):
885
if not isinstance(date_str, text_type):
802
886
date_str = date_str.decode(get_user_encoding(), 'replace')
803
887
return date_str + offset_str
806
890
def _format_date(t, offset, timezone, date_fmt, show_offset):
807
891
if timezone == 'utc':
810
894
elif timezone == 'original':
811
895
if offset is None:
813
tt = time.gmtime(t + offset)
897
tt = gmtime(t + offset)
814
898
elif timezone == 'local':
815
899
tt = time.localtime(t)
816
900
offset = local_time_offset(t)
882
966
"""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
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":
896
rand_bytes = file('/dev/urandom', 'rb').read
897
# Otherwise, use this hack as a last resort
898
except (IOError, OSError):
979
except NotImplementedError:
899
980
# not well seeded, but better than nothing
900
981
def rand_bytes(n):
970
1054
implementation should be loaded instead::
973
>>> import bzrlib._fictional_extension_pyx
1057
>>> import breezy._fictional_extension_pyx
974
1058
>>> except ImportError, e:
975
>>> bzrlib.osutils.failed_to_load_extension(e)
976
>>> import bzrlib._fictional_extension_py
1059
>>> breezy.osutils.failed_to_load_extension(e)
1060
>>> import breezy._fictional_extension_py
978
1062
# NB: This docstring is just an example, not a doctest, because doctest
979
1063
# currently can't cope with the use of lazy imports in this namespace --
982
1066
# This currently doesn't report the failure at the time it occurs, because
983
1067
# they tend to happen very early in startup when we can't check config
984
1068
# files etc, and also we want to report all failures but not spam the user
985
1069
# with 10 warnings.
986
from bzrlib import trace
987
1070
exception_str = str(exception)
988
1071
if exception_str not in _extension_load_failures:
989
1072
trace.mutter("failed to load compiled extension: %s" % exception_str)
1049
1132
os.link(src, dest)
1050
except (OSError, IOError), e:
1133
except (OSError, IOError) as e:
1051
1134
if e.errno != errno.EXDEV:
1053
1136
shutil.copyfile(src, dest)
1056
1139
def delete_any(path):
1057
"""Delete a file, symlink or directory.
1140
"""Delete a file, symlink or directory.
1059
1142
Will delete even if readonly.
1062
1145
_delete_file_or_dir(path)
1063
except (OSError, IOError), e:
1146
except (OSError, IOError) as e:
1064
1147
if e.errno in (errno.EPERM, errno.EACCES):
1065
1148
# make writable and try again
1250
1333
# but for now, we haven't optimized...
1251
1334
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)
1253
1352
def safe_unicode(unicode_or_utf8_string):
1254
1353
"""Coerce unicode_or_utf8_string into unicode.
1284
1383
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):
1386
def safe_revision_id(unicode_or_utf8_string):
1293
1387
"""Revision ids should now be utf8, but at one point they were unicode.
1295
1389
: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
1391
:return: None or a utf8 revision id.
1300
1393
if (unicode_or_utf8_string is None
1301
1394
or unicode_or_utf8_string.__class__ == str):
1302
1395
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):
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):
1314
1402
"""File ids should now be utf8, but at one point they were unicode.
1316
1404
This is the same as safe_utf8, except it uses the cached encode functions
1424
1515
None is returned if the width can't established precisely.
1427
- if BZR_COLUMNS is set, returns its value
1518
- if BRZ_COLUMNS is set, returns its value
1428
1519
- if there is no controlling terminal, returns None
1520
- query the OS, if the queried size has changed since the last query,
1429
1522
- if COLUMNS is set, returns its value,
1523
- if the OS has a value (even though it's never changed), return its value.
1431
1525
From there, we need to query the OS to get the size of the controlling
1528
On Unices we query the OS by:
1435
1529
- get termios.TIOCGWINSZ
1436
1530
- if an error occurs or a negative value is obtained, returns None
1532
On Windows we query the OS by:
1440
1533
- win32utils.get_console_size() decides,
1441
1534
- returns None on error (provided default value)
1536
# Note to implementors: if changing the rules for determining the width,
1537
# make sure you've considered the behaviour in these cases:
1538
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1539
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1541
# - (add more interesting cases here, if you find any)
1542
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1543
# but we don't want to register a signal handler because it is impossible
1544
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1545
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1546
# time so we can notice if the reported size has changed, which should have
1444
# If BZR_COLUMNS is set, take it, user is always right
1549
# If BRZ_COLUMNS is set, take it, user is always right
1550
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1552
width = int(os.environ['BRZ_COLUMNS'])
1447
1553
except (KeyError, ValueError):
1555
if width is not None:
1450
1561
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.
1562
if isatty is None or not isatty():
1563
# 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))
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.
1459
1584
return int(os.environ['COLUMNS'])
1460
1585
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1588
# Finally, use an unchanged size from the OS, if we have one.
1589
if _terminal_size_state == 'unchanged':
1590
if width is not None and width > 0:
1593
# The width could not be determined.
1471
1597
def _win32_terminal_size(width, height):
1498
1624
_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
1627
def supports_executable():
1527
1628
return sys.platform != "win32"
1712
1813
global _selected_dir_reader
1713
1814
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
1815
if sys.platform == "win32":
1722
from bzrlib._walkdirs_win32 import Win32ReadDir
1817
from ._walkdirs_win32 import Win32ReadDir
1723
1818
_selected_dir_reader = Win32ReadDir()
1724
1819
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
1821
elif _fs_enc in ('utf-8', 'ascii'):
1729
from bzrlib._readdir_pyx import UTF8DirReader
1823
from ._readdir_pyx import UTF8DirReader
1730
1824
_selected_dir_reader = UTF8DirReader()
1731
except ImportError, e:
1825
except ImportError as e:
1732
1826
failed_to_load_extension(e)
1886
1983
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
1986
def get_user_encoding():
1890
1987
"""Find out what the preferred user encoding is.
1892
1989
This is generally the encoding that is used for command line parameters
1893
1990
and file contents. This may be different from the terminal encoding
1894
1991
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
1993
:return: A string defining the preferred user encoding
1902
1995
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
1996
if _cached_user_encoding is not None:
1904
1997
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'
1999
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2000
# Use the existing locale settings and call nl_langinfo directly
2001
# rather than going through getpreferredencoding. This avoids
2002
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2003
# possibility of the setlocale call throwing an error.
2004
user_encoding = locale.nl_langinfo(locale.CODESET)
2006
# GZ 2011-12-19: On windows could call GetACP directly instead.
2007
user_encoding = locale.getpreferredencoding(False)
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:'
2010
user_encoding = codecs.lookup(user_encoding).name
2012
if user_encoding not in ("", "cp0"):
2013
sys.stderr.write('brz: warning:'
1950
2014
' unknown encoding %s.'
1951
2015
' Continuing with ascii encoding.\n'
1952
2016
% user_encoding
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = user_encoding
2018
user_encoding = 'ascii'
2020
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2021
if user_encoding == 'ascii':
2022
if sys.platform == 'darwin':
2023
# OSX is special-cased in Python to have a UTF-8 filesystem
2024
# encoding and previously had LANG set here if not present.
2025
user_encoding = 'utf-8'
2026
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2027
# for some other posix platforms as well.
2029
_cached_user_encoding = user_encoding
1959
2030
return user_encoding
2033
def get_diff_header_encoding():
2034
return get_terminal_encoding()
1962
2037
def get_host_name():
1963
2038
"""Return the current unicode host name.
2028
2112
def send_all(sock, bytes, report_activity=None):
2029
2113
"""Send all bytes on a socket.
2031
2115
Breaks large blocks in smaller chunks to avoid buffering limitations on
2032
2116
some platforms, and catches EINTR which may be thrown if the send is
2033
2117
interrupted by a signal.
2035
2119
This is preferred to socket.sendall(), because it avoids portability bugs
2036
2120
and provides activity reporting.
2038
2122
:param report_activity: Call this as bytes are read, see
2039
2123
Transport._report_activity
2042
2126
byte_count = len(bytes)
2127
view = memoryview(bytes)
2043
2128
while sent_total < byte_count:
2045
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2046
except socket.error, e:
2130
sent = sock.send(view[sent_total:sent_total+MAX_SOCKET_CHUNK])
2131
except (socket.error, IOError) as e:
2132
if e.args[0] in _end_of_stream_errors:
2133
raise errors.ConnectionReset(
2134
"Error trying to write to socket", e)
2047
2135
if e.args[0] != errno.EINTR:
2139
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2050
2141
sent_total += sent
2051
report_activity(sent, 'write')
2142
if report_activity is not None:
2143
report_activity(sent, 'write')
2146
def connect_socket(address):
2147
# Slight variation of the socket.create_connection() function (provided by
2148
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2149
# provide it for previous python versions. Also, we don't use the timeout
2150
# parameter (provided by the python implementation) so we don't implement
2152
err = socket.error('getaddrinfo returns an empty list')
2153
host, port = address
2154
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2155
af, socktype, proto, canonname, sa = res
2158
sock = socket.socket(af, socktype, proto)
2162
except socket.error as err:
2163
# 'err' is now the most recent error
2164
if sock is not None:
2054
2169
def dereference_path(path):
2082
2197
If and when pkg_resources becomes a standard library, this routine
2083
2198
can delegate to it.
2085
# Check package name is within bzrlib
2086
if package == "bzrlib":
2200
# Check package name is within breezy
2201
if package == "breezy":
2087
2202
resource_relpath = resource_name
2088
elif package.startswith("bzrlib."):
2089
package = package[len("bzrlib."):].replace('.', os.sep)
2203
elif package.startswith("breezy."):
2204
package = package[len("breezy."):].replace('.', os.sep)
2090
2205
resource_relpath = pathjoin(package, resource_name)
2092
raise errors.BzrError('resource package %s not in bzrlib' % package)
2207
raise errors.BzrError('resource package %s not in breezy' % package)
2094
2209
# Map the resource to a file and read its contents
2095
base = dirname(bzrlib.__file__)
2210
base = dirname(breezy.__file__)
2096
2211
if getattr(sys, 'frozen', None): # bzr.exe
2097
2212
base = abspath(pathjoin(base, '..', '..'))
2098
filename = pathjoin(base, resource_relpath)
2099
return open(filename, 'rU').read()
2213
f = file(pathjoin(base, resource_relpath), "rU")
2102
2219
def file_kind_from_stat_mode_thunk(mode):
2103
2220
global file_kind_from_stat_mode
2104
2221
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2106
from bzrlib._readdir_pyx import UTF8DirReader
2223
from ._readdir_pyx import UTF8DirReader
2107
2224
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2108
except ImportError, e:
2225
except ImportError as e:
2109
2226
# This is one time where we won't warn that an extension failed to
2110
2227
# load. The extension is never available on Windows anyway.
2111
from bzrlib._readdir_py import (
2228
from ._readdir_py import (
2112
2229
_kind_from_mode as file_kind_from_stat_mode
2114
2231
return file_kind_from_stat_mode(mode)
2115
2232
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2234
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2238
except OSError as e:
2122
2239
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2240
raise errors.NoSuchFile(f)
2243
def file_kind(f, _lstat=os.lstat):
2244
stat_value = file_stat(f, _lstat)
2245
return file_kind_from_stat_mode(stat_value.st_mode)
2127
2247
def until_no_eintr(f, *a, **kw):
2128
2248
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2250
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2251
if EINTR does occur. This is typically only true for low-level operations
2132
2252
like os.read. If in any doubt, don't use this.
2134
2254
Keep in mind that this is not a complete solution to EINTR. There is
2135
2255
probably code in the Python standard library and other dependencies that
2136
2256
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
2257
that signal). So this function can reduce the impact for IO that breezy
2138
2258
directly controls, but it is not a complete solution.
2140
2260
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2143
2263
return f(*a, **kw)
2144
except (IOError, OSError), e:
2264
except (IOError, OSError) as e:
2145
2265
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
2270
if sys.platform == "win32":
2176
2273
return msvcrt.getch()
2181
2278
fd = sys.stdin.fileno()
2182
2279
settings = termios.tcgetattr(fd)
2187
2284
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2287
if sys.platform.startswith('linux'):
2192
2288
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
2290
return os.sysconf('SC_NPROCESSORS_ONLN')
2291
except (ValueError, OSError, AttributeError):
2199
2293
elif sys.platform == 'darwin':
2200
2294
def _local_concurrency():
2201
2295
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2296
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2297
elif "bsd" in sys.platform:
2204
2298
def _local_concurrency():
2205
2299
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2300
stdout=subprocess.PIPE).communicate()[0]
2231
2325
if _cached_local_concurrency is not None and use_cache:
2232
2326
return _cached_local_concurrency
2234
concurrency = os.environ.get('BZR_CONCURRENCY', None)
2328
concurrency = os.environ.get('BRZ_CONCURRENCY', None)
2235
2329
if concurrency is None:
2237
concurrency = _local_concurrency()
2238
except (OSError, IOError):
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):
2241
2342
concurrency = int(concurrency)
2242
2343
except (TypeError, ValueError):
2302
2403
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2405
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):