106
99
mod = os.lstat(filename).st_mode
107
100
if not stat.S_ISLNK(mod):
108
101
mod = mod & 0777555
109
chmod_if_possible(filename, mod)
102
os.chmod(filename, mod)
112
105
def make_writable(filename):
113
106
mod = os.lstat(filename).st_mode
114
107
if not stat.S_ISLNK(mod):
116
chmod_if_possible(filename, mod)
119
def chmod_if_possible(filename, mode):
120
# Set file mode if that can be safely done.
121
# Sometimes even on unix the filesystem won't allow it - see
122
# https://bugs.launchpad.net/bzr/+bug/606537
124
# It is probably faster to just do the chmod, rather than
125
# doing a stat, and then trying to compare
126
os.chmod(filename, mode)
127
except (IOError, OSError),e:
128
# Permission/access denied seems to commonly happen on smbfs; there's
129
# probably no point warning about it.
130
# <https://bugs.launchpad.net/bzr/+bug/606537>
131
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
132
trace.mutter("ignore error on chmod of %r: %r" % (
109
os.chmod(filename, mod)
138
112
def minimum_path_selection(paths):
299
273
# choke on a Unicode string containing a relative path if
300
274
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
276
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
302
277
def _posix_abspath(path):
303
278
# jam 20060426 rather than encoding to fsencoding
304
279
# copy posixpath.abspath, but use os.getcwdu instead
305
280
if not posixpath.isabs(path):
306
281
path = posixpath.join(getcwd(), path)
307
return _posix_normpath(path)
282
return posixpath.normpath(path)
310
285
def _posix_realpath(path):
311
286
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
314
def _posix_normpath(path):
315
path = posixpath.normpath(path)
316
# Bug 861008: posixpath.normpath() returns a path normalized according to
317
# the POSIX standard, which stipulates (for compatibility reasons) that two
318
# leading slashes must not be simplified to one, and only if there are 3 or
319
# more should they be simplified as one. So we treat the leading 2 slashes
320
# as a special case here by simply removing the first slash, as we consider
321
# that breaking POSIX compatibility for this obscure feature is acceptable.
322
# This is not a paranoid precaution, as we notably get paths like this when
323
# the repo is hosted at the root of the filesystem, i.e. in "/".
324
if path.startswith('//'):
329
def _posix_path_from_environ(key):
330
"""Get unicode path from `key` in environment or None if not present
332
Note that posix systems use arbitrary byte strings for filesystem objects,
333
so a path that raises BadFilenameEncoding here may still be accessible.
335
val = os.environ.get(key, None)
339
return val.decode(_fs_enc)
340
except UnicodeDecodeError:
341
# GZ 2011-12-12:Ideally want to include `key` in the exception message
342
raise errors.BadFilenameEncoding(val, _fs_enc)
345
def _posix_get_home_dir():
346
"""Get the home directory of the current user as a unicode path"""
347
path = posixpath.expanduser("~")
349
return path.decode(_fs_enc)
350
except UnicodeDecodeError:
351
raise errors.BadFilenameEncoding(path, _fs_enc)
354
def _posix_getuser_unicode():
355
"""Get username from environment or password database as unicode"""
356
name = getpass.getuser()
357
user_encoding = get_user_encoding()
359
return name.decode(user_encoding)
360
except UnicodeDecodeError:
361
raise errors.BzrError("Encoding of username %r is unsupported by %s "
362
"application locale." % (name, user_encoding))
365
289
def _win32_fixdrive(path):
366
290
"""Force drive letters to be consistent.
450
374
return unicodedata.normalize('NFC', os.getcwdu())
453
def _rename_wrap_exception(rename_func):
454
"""Adds extra information to any exceptions that come from rename().
456
The exception has an updated message and 'old_filename' and 'new_filename'
460
def _rename_wrapper(old, new):
462
rename_func(old, new)
464
detailed_error = OSError(e.errno, e.strerror +
465
" [occurred when renaming '%s' to '%s']" %
467
detailed_error.old_filename = old
468
detailed_error.new_filename = new
471
return _rename_wrapper
473
# Default rename wraps os.rename()
474
rename = _rename_wrap_exception(os.rename)
476
377
# Default is to just use the python builtins, but these can be rebound on
477
378
# particular platforms.
478
379
abspath = _posix_abspath
479
380
realpath = _posix_realpath
480
381
pathjoin = os.path.join
481
normpath = _posix_normpath
482
path_from_environ = _posix_path_from_environ
483
_get_home_dir = _posix_get_home_dir
484
getuser_unicode = _posix_getuser_unicode
382
normpath = os.path.normpath
485
383
getcwd = os.getcwdu
486
385
dirname = os.path.dirname
487
386
basename = os.path.basename
488
387
split = os.path.split
982
878
return os.fstat(f.fileno())[stat.ST_SIZE]
985
# Alias os.urandom to support platforms (which?) without /dev/urandom and
986
# override if it doesn't work. Avoid checking on windows where there is
987
# significant initialisation cost that can be avoided for some bzr calls.
989
rand_bytes = os.urandom
991
if rand_bytes.__module__ != "nt":
881
# Define rand_bytes based on platform.
883
# Python 2.4 and later have os.urandom,
884
# but it doesn't work on some arches
886
rand_bytes = os.urandom
887
except (NotImplementedError, AttributeError):
888
# If python doesn't have os.urandom, or it doesn't work,
889
# then try to first pull random data from /dev/urandom
994
except NotImplementedError:
891
rand_bytes = file('/dev/urandom', 'rb').read
892
# Otherwise, use this hack as a last resort
893
except (IOError, OSError):
995
894
# not well seeded, but better than nothing
996
895
def rand_bytes(n):
2013
1914
_cached_user_encoding = None
2016
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1917
def get_user_encoding(use_cache=True):
2017
1918
"""Find out what the preferred user encoding is.
2019
1920
This is generally the encoding that is used for command line parameters
2020
1921
and file contents. This may be different from the terminal encoding
2021
1922
or the filesystem encoding.
1924
:param use_cache: Enable cache for detected encoding.
1925
(This parameter is turned on by default,
1926
and required only for selftesting)
2023
1928
:return: A string defining the preferred user encoding
2025
1930
global _cached_user_encoding
2026
if deprecated_passed(use_cache):
2027
warn_deprecated("use_cache should only have been used for tests",
2028
DeprecationWarning, stacklevel=2)
2029
if _cached_user_encoding is not None:
1931
if _cached_user_encoding is not None and use_cache:
2030
1932
return _cached_user_encoding
2032
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2033
# Use the existing locale settings and call nl_langinfo directly
2034
# rather than going through getpreferredencoding. This avoids
2035
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2036
# possibility of the setlocale call throwing an error.
2037
user_encoding = locale.nl_langinfo(locale.CODESET)
1934
if sys.platform == 'darwin':
1935
# python locale.getpreferredencoding() always return
1936
# 'mac-roman' on darwin. That's a lie.
1937
sys.platform = 'posix'
1939
if os.environ.get('LANG', None) is None:
1940
# If LANG is not set, we end up with 'ascii', which is bad
1941
# ('mac-roman' is more than ascii), so we set a default which
1942
# will give us UTF-8 (which appears to work in all cases on
1943
# OSX). Users are still free to override LANG of course, as
1944
# long as it give us something meaningful. This work-around
1945
# *may* not be needed with python 3k and/or OSX 10.5, but will
1946
# work with them too -- vila 20080908
1947
os.environ['LANG'] = 'en_US.UTF-8'
1950
sys.platform = 'darwin'
2039
# GZ 2011-12-19: On windows could call GetACP directly instead.
2040
user_encoding = locale.getpreferredencoding(False)
2043
user_encoding = codecs.lookup(user_encoding).name
2045
if user_encoding not in ("", "cp0"):
1955
user_encoding = locale.getpreferredencoding()
1956
except locale.Error, e:
1957
sys.stderr.write('bzr: warning: %s\n'
1958
' Could not determine what text encoding to use.\n'
1959
' This error usually means your Python interpreter\n'
1960
' doesn\'t support the locale set by $LANG (%s)\n'
1961
" Continuing with ascii encoding.\n"
1962
% (e, os.environ.get('LANG')))
1963
user_encoding = 'ascii'
1965
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1966
# treat that as ASCII, and not support printing unicode characters to the
1969
# For python scripts run under vim, we get '', so also treat that as ASCII
1970
if user_encoding in (None, 'cp0', ''):
1971
user_encoding = 'ascii'
1975
codecs.lookup(user_encoding)
2046
1977
sys.stderr.write('bzr: warning:'
2047
1978
' unknown encoding %s.'
2048
1979
' Continuing with ascii encoding.\n'
2049
1980
% user_encoding
2051
user_encoding = 'ascii'
2053
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2054
if user_encoding == 'ascii':
2055
if sys.platform == 'darwin':
2056
# OSX is special-cased in Python to have a UTF-8 filesystem
2057
# encoding and previously had LANG set here if not present.
2058
user_encoding = 'utf-8'
2059
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2060
# for some other posix platforms as well.
2062
_cached_user_encoding = user_encoding
1982
user_encoding = 'ascii'
1985
_cached_user_encoding = user_encoding
2063
1987
return user_encoding
2158
2083
while sent_total < byte_count:
2160
2085
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2161
except (socket.error, IOError), e:
2162
if e.args[0] in _end_of_stream_errors:
2163
raise errors.ConnectionReset(
2164
"Error trying to write to socket", e)
2086
except socket.error, e:
2165
2087
if e.args[0] != errno.EINTR:
2169
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2171
2090
sent_total += sent
2172
if report_activity is not None:
2173
report_activity(sent, 'write')
2091
report_activity(sent, 'write')
2176
2094
def connect_socket(address):
2459
2376
open_file = open
2379
def getuser_unicode():
2380
"""Return the username as unicode.
2383
user_encoding = get_user_encoding()
2384
username = getpass.getuser().decode(user_encoding)
2385
except UnicodeDecodeError:
2386
raise errors.BzrError("Can't decode username as %s." % \
2388
except ImportError, e:
2389
if sys.platform != 'win32':
2391
if str(e) != 'No module named pwd':
2393
# https://bugs.launchpad.net/bzr/+bug/660174
2394
# getpass.getuser() is unable to return username on Windows
2395
# if there is no USERNAME environment variable set.
2396
# That could be true if bzr is running as a service,
2397
# e.g. running `bzr serve` as a service on Windows.
2398
# We should not fail with traceback in this case.
2399
username = u'UNKNOWN'
2462
2403
def available_backup_name(base, exists):
2463
2404
"""Find a non-existing backup file name.
2568
2502
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2569
2503
if fn is not None:
2573
# See bug #1075108, on some platforms fdatasync exists, but can
2574
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2575
# and reduce the chance of corruption-on-powerloss situations. It
2576
# is not a mandatory call, so it is ok to suppress failures.
2577
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2578
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2582
def ensure_empty_directory_exists(path, exception_class):
2583
"""Make sure a local directory exists and is empty.
2585
If it does not exist, it is created. If it exists and is not empty, an
2586
instance of exception_class is raised.
2591
if e.errno != errno.EEXIST:
2593
if os.listdir(path) != []:
2594
raise exception_class(path)
2597
def is_environment_error(evalue):
2598
"""True if exception instance is due to a process environment issue
2600
This includes OSError and IOError, but also other errors that come from
2601
the operating system or core libraries but are not subclasses of those.
2603
if isinstance(evalue, (EnvironmentError, select.error)):
2605
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
added
removed
bzrlib/osutils.py
