107
98
mod = os.lstat(filename).st_mode
108
99
if not stat.S_ISLNK(mod):
109
100
mod = mod & 0777555
110
chmod_if_possible(filename, mod)
101
os.chmod(filename, mod)
113
104
def make_writable(filename):
114
105
mod = os.lstat(filename).st_mode
115
106
if not stat.S_ISLNK(mod):
117
chmod_if_possible(filename, mod)
120
def chmod_if_possible(filename, mode):
121
# Set file mode if that can be safely done.
122
# Sometimes even on unix the filesystem won't allow it - see
123
# https://bugs.launchpad.net/bzr/+bug/606537
125
# It is probably faster to just do the chmod, rather than
126
# doing a stat, and then trying to compare
127
os.chmod(filename, mode)
128
except (IOError, OSError),e:
129
# Permission/access denied seems to commonly happen on smbfs; there's
130
# probably no point warning about it.
131
# <https://bugs.launchpad.net/bzr/+bug/606537>
132
if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
133
trace.mutter("ignore error on chmod of %r: %r" % (
108
os.chmod(filename, mod)
139
111
def minimum_path_selection(paths):
300
272
# choke on a Unicode string containing a relative path if
301
273
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
275
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
303
276
def _posix_abspath(path):
304
277
# jam 20060426 rather than encoding to fsencoding
305
278
# copy posixpath.abspath, but use os.getcwdu instead
306
279
if not posixpath.isabs(path):
307
280
path = posixpath.join(getcwd(), path)
308
return _posix_normpath(path)
281
return posixpath.normpath(path)
311
284
def _posix_realpath(path):
312
285
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
315
def _posix_normpath(path):
316
path = posixpath.normpath(path)
317
# Bug 861008: posixpath.normpath() returns a path normalized according to
318
# the POSIX standard, which stipulates (for compatibility reasons) that two
319
# leading slashes must not be simplified to one, and only if there are 3 or
320
# more should they be simplified as one. So we treat the leading 2 slashes
321
# as a special case here by simply removing the first slash, as we consider
322
# that breaking POSIX compatibility for this obscure feature is acceptable.
323
# This is not a paranoid precaution, as we notably get paths like this when
324
# the repo is hosted at the root of the filesystem, i.e. in "/".
325
if path.startswith('//'):
330
def _posix_path_from_environ(key):
331
"""Get unicode path from `key` in environment or None if not present
333
Note that posix systems use arbitrary byte strings for filesystem objects,
334
so a path that raises BadFilenameEncoding here may still be accessible.
336
val = os.environ.get(key, None)
340
return val.decode(_fs_enc)
341
except UnicodeDecodeError:
342
# GZ 2011-12-12:Ideally want to include `key` in the exception message
343
raise errors.BadFilenameEncoding(val, _fs_enc)
346
def _posix_get_home_dir():
347
"""Get the home directory of the current user as a unicode path"""
348
path = posixpath.expanduser("~")
350
return path.decode(_fs_enc)
351
except UnicodeDecodeError:
352
raise errors.BadFilenameEncoding(path, _fs_enc)
355
def _posix_getuser_unicode():
356
"""Get username from environment or password database as unicode"""
357
name = getpass.getuser()
358
user_encoding = get_user_encoding()
360
return name.decode(user_encoding)
361
except UnicodeDecodeError:
362
raise errors.BzrError("Encoding of username %r is unsupported by %s "
363
"application locale." % (name, user_encoding))
366
288
def _win32_fixdrive(path):
367
289
"""Force drive letters to be consistent.
451
373
return unicodedata.normalize('NFC', os.getcwdu())
454
def _rename_wrap_exception(rename_func):
455
"""Adds extra information to any exceptions that come from rename().
457
The exception has an updated message and 'old_filename' and 'new_filename'
461
def _rename_wrapper(old, new):
463
rename_func(old, new)
465
detailed_error = OSError(e.errno, e.strerror +
466
" [occurred when renaming '%s' to '%s']" %
468
detailed_error.old_filename = old
469
detailed_error.new_filename = new
472
return _rename_wrapper
474
# Default rename wraps os.rename()
475
rename = _rename_wrap_exception(os.rename)
477
376
# Default is to just use the python builtins, but these can be rebound on
478
377
# particular platforms.
479
378
abspath = _posix_abspath
480
379
realpath = _posix_realpath
481
380
pathjoin = os.path.join
482
normpath = _posix_normpath
483
path_from_environ = _posix_path_from_environ
484
_get_home_dir = _posix_get_home_dir
485
getuser_unicode = _posix_getuser_unicode
381
normpath = os.path.normpath
486
382
getcwd = os.getcwdu
487
384
dirname = os.path.dirname
488
385
basename = os.path.basename
489
386
split = os.path.split
993
877
return os.fstat(f.fileno())[stat.ST_SIZE]
996
# Alias os.urandom to support platforms (which?) without /dev/urandom and
997
# override if it doesn't work. Avoid checking on windows where there is
998
# significant initialisation cost that can be avoided for some bzr calls.
1000
rand_bytes = os.urandom
1002
if rand_bytes.__module__ != "nt":
880
# Define rand_bytes based on platform.
882
# Python 2.4 and later have os.urandom,
883
# but it doesn't work on some arches
885
rand_bytes = os.urandom
886
except (NotImplementedError, AttributeError):
887
# If python doesn't have os.urandom, or it doesn't work,
888
# then try to first pull random data from /dev/urandom
1005
except NotImplementedError:
890
rand_bytes = file('/dev/urandom', 'rb').read
891
# Otherwise, use this hack as a last resort
892
except (IOError, OSError):
1006
893
# not well seeded, but better than nothing
1007
894
def rand_bytes(n):
2024
1913
_cached_user_encoding = None
2027
def get_user_encoding(use_cache=DEPRECATED_PARAMETER):
1916
def get_user_encoding(use_cache=True):
2028
1917
"""Find out what the preferred user encoding is.
2030
1919
This is generally the encoding that is used for command line parameters
2031
1920
and file contents. This may be different from the terminal encoding
2032
1921
or the filesystem encoding.
1923
:param use_cache: Enable cache for detected encoding.
1924
(This parameter is turned on by default,
1925
and required only for selftesting)
2034
1927
:return: A string defining the preferred user encoding
2036
1929
global _cached_user_encoding
2037
if deprecated_passed(use_cache):
2038
warn_deprecated("use_cache should only have been used for tests",
2039
DeprecationWarning, stacklevel=2)
2040
if _cached_user_encoding is not None:
1930
if _cached_user_encoding is not None and use_cache:
2041
1931
return _cached_user_encoding
2043
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2044
# Use the existing locale settings and call nl_langinfo directly
2045
# rather than going through getpreferredencoding. This avoids
2046
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2047
# possibility of the setlocale call throwing an error.
2048
user_encoding = locale.nl_langinfo(locale.CODESET)
1933
if sys.platform == 'darwin':
1934
# python locale.getpreferredencoding() always return
1935
# 'mac-roman' on darwin. That's a lie.
1936
sys.platform = 'posix'
1938
if os.environ.get('LANG', None) is None:
1939
# If LANG is not set, we end up with 'ascii', which is bad
1940
# ('mac-roman' is more than ascii), so we set a default which
1941
# will give us UTF-8 (which appears to work in all cases on
1942
# OSX). Users are still free to override LANG of course, as
1943
# long as it give us something meaningful. This work-around
1944
# *may* not be needed with python 3k and/or OSX 10.5, but will
1945
# work with them too -- vila 20080908
1946
os.environ['LANG'] = 'en_US.UTF-8'
1949
sys.platform = 'darwin'
2050
# GZ 2011-12-19: On windows could call GetACP directly instead.
2051
user_encoding = locale.getpreferredencoding(False)
2054
user_encoding = codecs.lookup(user_encoding).name
2056
if user_encoding not in ("", "cp0"):
1954
user_encoding = locale.getpreferredencoding()
1955
except locale.Error, e:
1956
sys.stderr.write('bzr: warning: %s\n'
1957
' Could not determine what text encoding to use.\n'
1958
' This error usually means your Python interpreter\n'
1959
' doesn\'t support the locale set by $LANG (%s)\n'
1960
" Continuing with ascii encoding.\n"
1961
% (e, os.environ.get('LANG')))
1962
user_encoding = 'ascii'
1964
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1965
# treat that as ASCII, and not support printing unicode characters to the
1968
# For python scripts run under vim, we get '', so also treat that as ASCII
1969
if user_encoding in (None, 'cp0', ''):
1970
user_encoding = 'ascii'
1974
codecs.lookup(user_encoding)
2057
1976
sys.stderr.write('bzr: warning:'
2058
1977
' unknown encoding %s.'
2059
1978
' Continuing with ascii encoding.\n'
2060
1979
% user_encoding
2062
user_encoding = 'ascii'
2064
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2065
if user_encoding == 'ascii':
2066
if sys.platform == 'darwin':
2067
# OSX is special-cased in Python to have a UTF-8 filesystem
2068
# encoding and previously had LANG set here if not present.
2069
user_encoding = 'utf-8'
2070
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2071
# for some other posix platforms as well.
2073
_cached_user_encoding = user_encoding
1981
user_encoding = 'ascii'
1984
_cached_user_encoding = user_encoding
2074
1986
return user_encoding
2169
2082
while sent_total < byte_count:
2171
2084
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2172
except (socket.error, IOError), e:
2173
if e.args[0] in _end_of_stream_errors:
2174
raise errors.ConnectionReset(
2175
"Error trying to write to socket", e)
2085
except socket.error, e:
2176
2086
if e.args[0] != errno.EINTR:
2180
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2182
2089
sent_total += sent
2183
if report_activity is not None:
2184
report_activity(sent, 'write')
2090
report_activity(sent, 'write')
2187
2093
def connect_socket(address):
2272
2178
return file_kind_from_stat_mode(mode)
2273
2179
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2275
def file_stat(f, _lstat=os.lstat):
2182
def file_kind(f, _lstat=os.lstat):
2184
return file_kind_from_stat_mode(_lstat(f).st_mode)
2279
2185
except OSError, e:
2280
2186
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2281
2187
raise errors.NoSuchFile(f)
2284
def file_kind(f, _lstat=os.lstat):
2285
stat_value = file_stat(f, _lstat)
2286
return file_kind_from_stat_mode(stat_value.st_mode)
2288
2191
def until_no_eintr(f, *a, **kw):
2289
2192
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2470
2372
open_file = open
2375
def getuser_unicode():
2376
"""Return the username as unicode.
2379
user_encoding = get_user_encoding()
2380
username = getpass.getuser().decode(user_encoding)
2381
except UnicodeDecodeError:
2382
raise errors.BzrError("Can't decode username as %s." % \
2384
except ImportError, e:
2385
if sys.platform != 'win32':
2387
if str(e) != 'No module named pwd':
2389
# https://bugs.launchpad.net/bzr/+bug/660174
2390
# getpass.getuser() is unable to return username on Windows
2391
# if there is no USERNAME environment variable set.
2392
# That could be true if bzr is running as a service,
2393
# e.g. running `bzr serve` as a service on Windows.
2394
# We should not fail with traceback in this case.
2395
username = u'UNKNOWN'
2473
2399
def available_backup_name(base, exists):
2474
2400
"""Find a non-existing backup file name.
2579
2498
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2580
2499
if fn is not None:
2584
# See bug #1075108, on some platforms fdatasync exists, but can
2585
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2586
# and reduce the chance of corruption-on-powerloss situations. It
2587
# is not a mandatory call, so it is ok to suppress failures.
2588
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2589
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2593
def ensure_empty_directory_exists(path, exception_class):
2594
"""Make sure a local directory exists and is empty.
2596
If it does not exist, it is created. If it exists and is not empty, an
2597
instance of exception_class is raised.
2602
if e.errno != errno.EEXIST:
2604
if os.listdir(path) != []:
2605
raise exception_class(path)
2608
def is_environment_error(evalue):
2609
"""True if exception instance is due to a process environment issue
2611
This includes OSError and IOError, but also other errors that come from
2612
the operating system or core libraries but are not subclasses of those.
2614
if isinstance(evalue, (EnvironmentError, select.error)):
2616
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):