81
91
O_NOINHERIT = getattr(os, 'O_NOINHERIT', 0)
84
class UnsupportedTimezoneFormat(errors.BzrError):
86
_fmt = ('Unsupported timezone format "%(timezone)s", '
87
'options are "utc", "original", "local".')
89
def __init__(self, timezone):
90
self.timezone = timezone
93
94
def get_unicode_argv():
97
96
user_encoding = get_user_encoding()
98
97
return [a.decode(user_encoding) for a in sys.argv[1:]]
99
98
except UnicodeDecodeError:
100
raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
101
"application locale.").format(a, user_encoding))
99
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
104
103
def make_readonly(filename):
105
104
"""Make a filename read-only."""
106
105
mod = os.lstat(filename).st_mode
107
106
if not stat.S_ISLNK(mod):
109
chmod_if_possible(filename, mod)
108
os.chmod(filename, mod)
112
111
def make_writable(filename):
113
112
mod = os.lstat(filename).st_mode
114
113
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) as 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" % (
115
os.chmod(filename, mod)
138
118
def minimum_path_selection(paths):
252
227
file_existed = False
254
229
rename_func(new, tmp_name)
255
except (errors.NoSuchFile,):
230
except (errors.NoSuchFile,), e:
258
233
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
259
234
# function raises an IOError with errno is None when a rename fails.
260
235
# This then gets caught here.
261
236
if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
263
except Exception as e:
264
239
if (getattr(e, 'errno', None) is None
265
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
240
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
268
243
file_existed = True
272
# This may throw an exception, in which case success will
274
rename_func(old, new)
276
except (IOError, OSError) as e:
277
# source and target may be aliases of each other (e.g. on a
278
# case-insensitive filesystem), so we may have accidentally renamed
279
# source by when we tried to rename target
280
if (file_existed and e.errno in (None, errno.ENOENT)
249
# This may throw an exception, in which case success will
251
rename_func(old, new)
253
except (IOError, OSError), e:
254
# source and target may be aliases of each other (e.g. on a
255
# case-insensitive filesystem), so we may have accidentally renamed
256
# source by when we tried to rename target
257
failure_exc = sys.exc_info()
258
if (file_existed and e.errno in (None, errno.ENOENT)
281
259
and old.lower() == new.lower()):
282
# source and target are the same file on a case-insensitive
283
# filesystem, so we don't generate an exception
260
# source and target are the same file on a case-insensitive
261
# filesystem, so we don't generate an exception
289
265
# If the file used to exist, rename it back into place
292
268
unlink_func(tmp_name)
294
270
rename_func(tmp_name, new)
271
if failure_exc is not None:
272
raise failure_exc[0], failure_exc[1], failure_exc[2]
297
275
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
298
276
# choke on a Unicode string containing a relative path if
299
277
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
279
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
301
280
def _posix_abspath(path):
302
281
# jam 20060426 rather than encoding to fsencoding
303
282
# copy posixpath.abspath, but use os.getcwdu instead
304
283
if not posixpath.isabs(path):
305
284
path = posixpath.join(getcwd(), path)
306
return _posix_normpath(path)
285
return posixpath.normpath(path)
309
288
def _posix_realpath(path):
310
289
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
313
def _posix_normpath(path):
314
path = posixpath.normpath(path)
315
# Bug 861008: posixpath.normpath() returns a path normalized according to
316
# the POSIX standard, which stipulates (for compatibility reasons) that two
317
# leading slashes must not be simplified to one, and only if there are 3 or
318
# more should they be simplified as one. So we treat the leading 2 slashes
319
# as a special case here by simply removing the first slash, as we consider
320
# that breaking POSIX compatibility for this obscure feature is acceptable.
321
# This is not a paranoid precaution, as we notably get paths like this when
322
# the repo is hosted at the root of the filesystem, i.e. in "/".
323
if path.startswith('//'):
328
def _posix_path_from_environ(key):
329
"""Get unicode path from `key` in environment or None if not present
331
Note that posix systems use arbitrary byte strings for filesystem objects,
332
so a path that raises BadFilenameEncoding here may still be accessible.
334
val = os.environ.get(key, None)
335
if PY3 or val is None:
338
return val.decode(_fs_enc)
339
except UnicodeDecodeError:
340
# GZ 2011-12-12:Ideally want to include `key` in the exception message
341
raise errors.BadFilenameEncoding(val, _fs_enc)
344
def _posix_get_home_dir():
345
"""Get the home directory of the current user as a unicode path"""
346
path = posixpath.expanduser("~")
348
return path.decode(_fs_enc)
349
except AttributeError:
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()
360
user_encoding = get_user_encoding()
362
return name.decode(user_encoding)
363
except UnicodeDecodeError:
364
raise errors.BzrError("Encoding of username %r is unsupported by %s "
365
"application locale." % (name, user_encoding))
368
292
def _win32_fixdrive(path):
369
293
"""Force drive letters to be consistent.
381
305
def _win32_abspath(path):
382
306
# Real ntpath.abspath doesn't have a problem with a unicode cwd
383
return _win32_fixdrive(ntpath.abspath(path).replace('\\', '/'))
307
return _win32_fixdrive(ntpath.abspath(unicode(path)).replace('\\', '/'))
310
def _win98_abspath(path):
311
"""Return the absolute version of a path.
312
Windows 98 safe implementation (python reimplementation
313
of Win32 API function GetFullPathNameW)
318
# \\HOST\path => //HOST/path
319
# //HOST/path => //HOST/path
320
# path => C:/cwd/path
323
# check for absolute path
324
drive = ntpath.splitdrive(path)[0]
325
if drive == '' and path[:2] not in('//','\\\\'):
327
# we cannot simply os.path.join cwd and path
328
# because os.path.join('C:','/path') produce '/path'
329
# and this is incorrect
330
if path[:1] in ('/','\\'):
331
cwd = ntpath.splitdrive(cwd)[0]
333
path = cwd + '\\' + path
334
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
386
337
def _win32_realpath(path):
387
338
# Real ntpath.realpath doesn't have a problem with a unicode cwd
388
return _win32_fixdrive(ntpath.realpath(path).replace('\\', '/'))
339
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
391
342
def _win32_pathjoin(*args):
425
376
def _mac_getcwd():
426
return unicodedata.normalize('NFC', _getcwd())
429
def _rename_wrap_exception(rename_func):
430
"""Adds extra information to any exceptions that come from rename().
432
The exception has an updated message and 'old_filename' and 'new_filename'
436
def _rename_wrapper(old, new):
438
rename_func(old, new)
440
detailed_error = OSError(e.errno, e.strerror +
441
" [occurred when renaming '%s' to '%s']" %
443
detailed_error.old_filename = old
444
detailed_error.new_filename = new
447
return _rename_wrapper
450
if sys.version_info > (3,):
456
# Default rename wraps os.rename()
457
rename = _rename_wrap_exception(os.rename)
377
return unicodedata.normalize('NFC', os.getcwdu())
459
380
# Default is to just use the python builtins, but these can be rebound on
460
381
# particular platforms.
461
382
abspath = _posix_abspath
462
383
realpath = _posix_realpath
463
384
pathjoin = os.path.join
464
normpath = _posix_normpath
465
path_from_environ = _posix_path_from_environ
466
_get_home_dir = _posix_get_home_dir
467
getuser_unicode = _posix_getuser_unicode
385
normpath = os.path.normpath
469
388
dirname = os.path.dirname
470
389
basename = os.path.basename
471
390
split = os.path.split
975
862
return '%d hours, %d minute%s %s' % (hours, minutes,
976
863
plural_minutes, direction)
980
866
"""Return size of given open file."""
981
867
return os.fstat(f.fileno())[stat.ST_SIZE]
984
# Alias os.urandom to support platforms (which?) without /dev/urandom and
985
# override if it doesn't work. Avoid checking on windows where there is
986
# significant initialisation cost that can be avoided for some bzr calls.
988
rand_bytes = os.urandom
990
if rand_bytes.__module__ != "nt":
870
# Define rand_bytes based on platform.
872
# Python 2.4 and later have os.urandom,
873
# but it doesn't work on some arches
875
rand_bytes = os.urandom
876
except (NotImplementedError, AttributeError):
877
# If python doesn't have os.urandom, or it doesn't work,
878
# then try to first pull random data from /dev/urandom
993
except NotImplementedError:
880
rand_bytes = file('/dev/urandom', 'rb').read
881
# Otherwise, use this hack as a last resort
882
except (IOError, OSError):
994
883
# not well seeded, but better than nothing
995
884
def rand_bytes(n):
1014
901
for raw_byte in rand_bytes(num):
1016
s += ALNUM[ord(raw_byte) % 36]
1018
s += ALNUM[raw_byte % 36]
902
s += ALNUM[ord(raw_byte) % 36]
1022
# TODO: We could later have path objects that remember their list
1023
# decomposition (might be too tricksy though.)
906
## TODO: We could later have path objects that remember their list
907
## decomposition (might be too tricksy though.)
1025
909
def splitpath(p):
1026
910
"""Turn string into list of parts."""
1027
use_bytes = isinstance(p, bytes)
1028
if os.path.sep == '\\':
1029
# split on either delimiter because people might use either on
1032
ps = re.split(b'[\\\\/]', p)
1034
ps = re.split(r'[\\/]', p)
1043
current_empty_dir = (b'.', b'')
1046
current_empty_dir = ('.', '')
911
# split on either delimiter because people might use either on
913
ps = re.split(r'[\\/]', p)
1051
raise errors.BzrError(gettext("sorry, %r not allowed in path") % f)
1052
elif f in current_empty_dir:
918
raise errors.BzrError("sorry, %r not allowed in path" % f)
919
elif (f == '.') or (f == ''):
1109
977
def report_extension_load_failures():
1110
978
if not _extension_load_failures:
1112
if config.GlobalConfig().suppress_warning('missing_extensions'):
980
from bzrlib.config import GlobalConfig
981
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
1114
983
# the warnings framework should by default show this only once
1115
from .trace import warning
984
from bzrlib.trace import warning
1117
"brz: warning: some compiled extensions could not be loaded; "
1118
"see ``brz help missing-extensions``")
986
"bzr: warning: some compiled extensions could not be loaded; "
987
"see <https://answers.launchpad.net/bzr/+faq/703>")
1119
988
# we no longer show the specific missing extensions here, because it makes
1120
989
# the message too long and scary - see
1121
990
# https://bugs.launchpad.net/bzr/+bug/430529
1125
from ._chunks_to_lines_pyx import chunks_to_lines
1126
except ImportError as e:
994
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
995
except ImportError, e:
1127
996
failed_to_load_extension(e)
1128
from ._chunks_to_lines_py import chunks_to_lines
997
from bzrlib._chunks_to_lines_py import chunks_to_lines
1131
1000
def split_lines(s):
1132
1001
"""Split s into lines, but without removing the newline characters."""
1133
1002
# Trivially convert a fulltext into a 'chunked' representation, and let
1134
1003
# chunks_to_lines do the heavy lifting.
1135
if isinstance(s, bytes):
1004
if isinstance(s, str):
1136
1005
# chunks_to_lines only supports 8-bit strings
1137
1006
return chunks_to_lines([s])
1418
1284
return unicode_or_utf8_string.encode('utf-8')
1421
def safe_revision_id(unicode_or_utf8_string):
1287
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
1288
' Revision id generators should be creating utf8'
1292
def safe_revision_id(unicode_or_utf8_string, warn=True):
1422
1293
"""Revision ids should now be utf8, but at one point they were unicode.
1424
1295
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
1297
:param warn: Functions that are sanitizing user data can set warn=False
1426
1298
:return: None or a utf8 revision id.
1428
1300
if (unicode_or_utf8_string is None
1429
or unicode_or_utf8_string.__class__ == bytes):
1301
or unicode_or_utf8_string.__class__ == str):
1430
1302
return unicode_or_utf8_string
1431
raise TypeError('Unicode revision ids are no longer supported. '
1432
'Revision id generators should be creating utf8 revision '
1436
def safe_file_id(unicode_or_utf8_string):
1304
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
1306
return cache_utf8.encode(unicode_or_utf8_string)
1309
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
1310
' generators should be creating utf8 file ids.')
1313
def safe_file_id(unicode_or_utf8_string, warn=True):
1437
1314
"""File ids should now be utf8, but at one point they were unicode.
1439
1316
This is the same as safe_utf8, except it uses the cached encode functions
1668
1533
_terminal_size = _ioctl_terminal_size
1671
def supports_executable(path):
1672
"""Return if filesystem at path supports executable bit.
1674
:param path: Path for which to check the file system
1675
:return: boolean indicating whether executable bit can be stored/relied upon
1677
if sys.platform == 'win32':
1680
fs_type = get_fs_type(path)
1681
except errors.DependencyNotPresent as e:
1682
trace.mutter('Unable to get fs type for %r: %s', path, e)
1684
if fs_type in ('vfat', 'ntfs'):
1685
# filesystems known to not support executable bit
1690
def supports_symlinks(path):
1691
"""Return if the filesystem at path supports the creation of symbolic links.
1694
if not has_symlinks():
1697
fs_type = get_fs_type(path)
1698
except errors.DependencyNotPresent as e:
1699
trace.mutter('Unable to get fs type for %r: %s', path, e)
1701
if fs_type in ('vfat', 'ntfs'):
1702
# filesystems known to not support symlinks
1536
def supports_executable():
1537
return sys.platform != "win32"
1707
1540
def supports_posix_readonly():
2053
1884
This can be used to sort paths in the same way that walkdirs does.
2055
return (dirname(path), path)
1886
return (dirname(path) , path)
2058
1889
def compare_paths_prefix_order(path_a, path_b):
2059
1890
"""Compare path_a and path_b to generate the same order walkdirs uses."""
2060
1891
key_a = path_prefix_key(path_a)
2061
1892
key_b = path_prefix_key(path_b)
2062
return (key_a > key_b) - (key_a < key_b)
1893
return cmp(key_a, key_b)
2065
1896
_cached_user_encoding = None
2068
def get_user_encoding():
1899
def get_user_encoding(use_cache=True):
2069
1900
"""Find out what the preferred user encoding is.
2071
1902
This is generally the encoding that is used for command line parameters
2072
1903
and file contents. This may be different from the terminal encoding
2073
1904
or the filesystem encoding.
1906
:param use_cache: Enable cache for detected encoding.
1907
(This parameter is turned on by default,
1908
and required only for selftesting)
2075
1910
:return: A string defining the preferred user encoding
2077
1912
global _cached_user_encoding
2078
if _cached_user_encoding is not None:
1913
if _cached_user_encoding is not None and use_cache:
2079
1914
return _cached_user_encoding
2081
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2082
# Use the existing locale settings and call nl_langinfo directly
2083
# rather than going through getpreferredencoding. This avoids
2084
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2085
# possibility of the setlocale call throwing an error.
2086
user_encoding = locale.nl_langinfo(locale.CODESET)
1916
if sys.platform == 'darwin':
1917
# python locale.getpreferredencoding() always return
1918
# 'mac-roman' on darwin. That's a lie.
1919
sys.platform = 'posix'
1921
if os.environ.get('LANG', None) is None:
1922
# If LANG is not set, we end up with 'ascii', which is bad
1923
# ('mac-roman' is more than ascii), so we set a default which
1924
# will give us UTF-8 (which appears to work in all cases on
1925
# OSX). Users are still free to override LANG of course, as
1926
# long as it give us something meaningful. This work-around
1927
# *may* not be needed with python 3k and/or OSX 10.5, but will
1928
# work with them too -- vila 20080908
1929
os.environ['LANG'] = 'en_US.UTF-8'
1932
sys.platform = 'darwin'
2088
# GZ 2011-12-19: On windows could call GetACP directly instead.
2089
user_encoding = locale.getpreferredencoding(False)
2092
user_encoding = codecs.lookup(user_encoding).name
2094
if user_encoding not in ("", "cp0"):
2095
sys.stderr.write('brz: warning:'
1937
user_encoding = locale.getpreferredencoding()
1938
except locale.Error, e:
1939
sys.stderr.write('bzr: warning: %s\n'
1940
' Could not determine what text encoding to use.\n'
1941
' This error usually means your Python interpreter\n'
1942
' doesn\'t support the locale set by $LANG (%s)\n'
1943
" Continuing with ascii encoding.\n"
1944
% (e, os.environ.get('LANG')))
1945
user_encoding = 'ascii'
1947
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1948
# treat that as ASCII, and not support printing unicode characters to the
1951
# For python scripts run under vim, we get '', so also treat that as ASCII
1952
if user_encoding in (None, 'cp0', ''):
1953
user_encoding = 'ascii'
1957
codecs.lookup(user_encoding)
1959
sys.stderr.write('bzr: warning:'
2096
1960
' unknown encoding %s.'
2097
1961
' Continuing with ascii encoding.\n'
2098
1962
% user_encoding
2100
user_encoding = 'ascii'
2102
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2103
if user_encoding == 'ascii':
2104
if sys.platform == 'darwin':
2105
# OSX is special-cased in Python to have a UTF-8 filesystem
2106
# encoding and previously had LANG set here if not present.
2107
user_encoding = 'utf-8'
2108
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2109
# for some other posix platforms as well.
2111
_cached_user_encoding = user_encoding
1964
user_encoding = 'ascii'
1967
_cached_user_encoding = user_encoding
2112
1969
return user_encoding
2137
1993
# data at once.
2138
1994
MAX_SOCKET_CHUNK = 64 * 1024
2140
_end_of_stream_errors = [errno.ECONNRESET, errno.EPIPE, errno.EINVAL]
2141
for _eno in ['WSAECONNRESET', 'WSAECONNABORTED']:
2142
_eno = getattr(errno, _eno, None)
2143
if _eno is not None:
2144
_end_of_stream_errors.append(_eno)
2148
1996
def read_bytes_from_socket(sock, report_activity=None,
2149
max_read_size=MAX_SOCKET_CHUNK):
1997
max_read_size=MAX_SOCKET_CHUNK):
2150
1998
"""Read up to max_read_size of bytes from sock and notify of progress.
2152
2000
Translates "Connection reset by peer" into file-like EOF (return an
2153
2001
empty string rather than raise an error), and repeats the recv if
2154
2002
interrupted by a signal.
2158
data = sock.recv(max_read_size)
2159
except socket.error as e:
2006
bytes = sock.recv(max_read_size)
2007
except socket.error, e:
2160
2008
eno = e.args[0]
2161
if eno in _end_of_stream_errors:
2009
if eno == getattr(errno, "WSAECONNRESET", errno.ECONNRESET):
2162
2010
# The connection was closed by the other side. Callers expect
2163
2011
# an empty string to signal end-of-stream.
2165
2013
elif eno == errno.EINTR:
2166
2014
# Retry the interrupted recv.
2170
2018
if report_activity is not None:
2171
report_activity(len(data), 'read')
2019
report_activity(len(bytes), 'read')
2175
2023
def recv_all(socket, count):
2208
2056
byte_count = len(bytes)
2209
view = memoryview(bytes)
2210
2057
while sent_total < byte_count:
2212
sent = sock.send(view[sent_total:sent_total + MAX_SOCKET_CHUNK])
2213
except (socket.error, IOError) as e:
2214
if e.args[0] in _end_of_stream_errors:
2215
raise errors.ConnectionReset(
2216
"Error trying to write to socket", e)
2059
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2060
except socket.error, e:
2217
2061
if e.args[0] != errno.EINTR:
2221
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2223
2064
sent_total += sent
2224
if report_activity is not None:
2225
report_activity(sent, 'write')
2228
def connect_socket(address):
2229
# Slight variation of the socket.create_connection() function (provided by
2230
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2231
# provide it for previous python versions. Also, we don't use the timeout
2232
# parameter (provided by the python implementation) so we don't implement
2234
err = socket.error('getaddrinfo returns an empty list')
2235
host, port = address
2236
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2237
af, socktype, proto, canonname, sa = res
2240
sock = socket.socket(af, socktype, proto)
2244
except socket.error as e:
2246
# 'err' is now the most recent error
2247
if sock is not None:
2065
report_activity(sent, 'write')
2252
2068
def dereference_path(path):
2280
2096
If and when pkg_resources becomes a standard library, this routine
2281
2097
can delegate to it.
2283
# Check package name is within breezy
2284
if package == "breezy":
2099
# Check package name is within bzrlib
2100
if package == "bzrlib":
2285
2101
resource_relpath = resource_name
2286
elif package.startswith("breezy."):
2287
package = package[len("breezy."):].replace('.', os.sep)
2102
elif package.startswith("bzrlib."):
2103
package = package[len("bzrlib."):].replace('.', os.sep)
2288
2104
resource_relpath = pathjoin(package, resource_name)
2290
raise errors.BzrError('resource package %s not in breezy' % package)
2106
raise errors.BzrError('resource package %s not in bzrlib' % package)
2292
2108
# Map the resource to a file and read its contents
2293
base = dirname(breezy.__file__)
2109
base = dirname(bzrlib.__file__)
2294
2110
if getattr(sys, 'frozen', None): # bzr.exe
2295
2111
base = abspath(pathjoin(base, '..', '..'))
2296
with open(pathjoin(base, resource_relpath), "rt") as f:
2112
f = file(pathjoin(base, resource_relpath), "rU")
2297
2114
return f.read()
2300
2118
def file_kind_from_stat_mode_thunk(mode):
2301
2119
global file_kind_from_stat_mode
2302
2120
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2304
from ._readdir_pyx import UTF8DirReader
2122
from bzrlib._readdir_pyx import UTF8DirReader
2305
2123
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2124
except ImportError, e:
2307
2125
# This is one time where we won't warn that an extension failed to
2308
2126
# load. The extension is never available on Windows anyway.
2309
from ._readdir_py import (
2127
from bzrlib._readdir_py import (
2310
2128
_kind_from_mode as file_kind_from_stat_mode
2312
2130
return file_kind_from_stat_mode(mode)
2315
2131
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2318
def file_stat(f, _lstat=os.lstat):
2134
def file_kind(f, _lstat=os.lstat):
2322
except OSError as e:
2136
return file_kind_from_stat_mode(_lstat(f).st_mode)
2323
2138
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2324
2139
raise errors.NoSuchFile(f)
2328
def file_kind(f, _lstat=os.lstat):
2329
stat_value = file_stat(f, _lstat)
2330
return file_kind_from_stat_mode(stat_value.st_mode)
2333
2143
def until_no_eintr(f, *a, **kw):
2334
2144
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2340
2150
Keep in mind that this is not a complete solution to EINTR. There is
2341
2151
probably code in the Python standard library and other dependencies that
2342
2152
may encounter EINTR if a signal arrives (and there is signal handler for
2343
that signal). So this function can reduce the impact for IO that breezy
2153
that signal). So this function can reduce the impact for IO that bzrlib
2344
2154
directly controls, but it is not a complete solution.
2346
2156
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2349
2159
return f(*a, **kw)
2350
except (IOError, OSError) as e:
2160
except (IOError, OSError), e:
2351
2161
if e.errno == errno.EINTR:
2166
@deprecated_function(deprecated_in((2, 2, 0)))
2167
def re_compile_checked(re_string, flags=0, where=""):
2168
"""Return a compiled re, or raise a sensible error.
2170
This should only be used when compiling user-supplied REs.
2172
:param re_string: Text form of regular expression.
2173
:param flags: eg re.IGNORECASE
2174
:param where: Message explaining to the user the context where
2175
it occurred, eg 'log search filter'.
2177
# from https://bugs.launchpad.net/bzr/+bug/251352
2179
re_obj = re.compile(re_string, flags)
2182
except errors.InvalidPattern, e:
2184
where = ' in ' + where
2185
# despite the name 'error' is a type
2186
raise errors.BzrCommandError('Invalid regular expression%s: %s'
2356
2190
if sys.platform == "win32":
2359
2193
return msvcrt.getch()
2364
2198
fd = sys.stdin.fileno()
2365
2199
settings = termios.tcgetattr(fd)
2370
2204
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2373
if sys.platform.startswith('linux'):
2208
if sys.platform == 'linux2':
2374
2209
def _local_concurrency():
2376
return os.sysconf('SC_NPROCESSORS_ONLN')
2377
except (ValueError, OSError, AttributeError):
2211
prefix = 'processor'
2212
for line in file('/proc/cpuinfo', 'rb'):
2213
if line.startswith(prefix):
2214
concurrency = int(line[line.find(':')+1:]) + 1
2379
2216
elif sys.platform == 'darwin':
2380
2217
def _local_concurrency():
2381
2218
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2382
2219
stdout=subprocess.PIPE).communicate()[0]
2383
elif "bsd" in sys.platform:
2220
elif sys.platform[0:7] == 'freebsd':
2384
2221
def _local_concurrency():
2385
2222
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2386
2223
stdout=subprocess.PIPE).communicate()[0]
2387
2224
elif sys.platform == 'sunos5':
2388
2225
def _local_concurrency():
2389
return subprocess.Popen(['psrinfo', '-p', ],
2226
return subprocess.Popen(['psrinfo', '-p',],
2390
2227
stdout=subprocess.PIPE).communicate()[0]
2391
2228
elif sys.platform == "win32":
2392
2229
def _local_concurrency():
2491
2321
open_file = open
2494
def available_backup_name(base, exists):
2495
"""Find a non-existing backup file name.
2497
This will *not* create anything, this only return a 'free' entry. This
2498
should be used for checking names in a directory below a locked
2499
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2500
Leap) and generally discouraged.
2502
:param base: The base name.
2504
:param exists: A callable returning True if the path parameter exists.
2507
name = "%s.~%d~" % (base, counter)
2510
name = "%s.~%d~" % (base, counter)
2514
def set_fd_cloexec(fd):
2515
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2516
support for this is not available.
2520
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2521
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2522
except (ImportError, AttributeError):
2523
# Either the fcntl module or specific constants are not present
2527
def find_executable_on_path(name):
2528
"""Finds an executable on the PATH.
2530
On Windows, this will try to append each extension in the PATHEXT
2531
environment variable to the name, if it cannot be found with the name
2534
:param name: The base name of the executable.
2535
:return: The path to the executable found or None.
2537
if sys.platform == 'win32':
2538
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2539
exts = [ext.lower() for ext in exts]
2540
base, ext = os.path.splitext(name)
2542
if ext.lower() not in exts:
2548
path = os.environ.get('PATH')
2549
if path is not None:
2550
path = path.split(os.pathsep)
2553
f = os.path.join(d, name) + ext
2554
if os.access(f, os.X_OK):
2556
if sys.platform == 'win32':
2557
app_path = win32utils.get_app_path(name)
2558
if app_path != name:
2563
def _posix_is_local_pid_dead(pid):
2564
"""True if pid doesn't correspond to live process on this machine"""
2566
# Special meaning of unix kill: just check if it's there.
2568
except OSError as e:
2569
if e.errno == errno.ESRCH:
2570
# On this machine, and really not found: as sure as we can be
2573
elif e.errno == errno.EPERM:
2574
# exists, though not ours
2577
trace.mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2578
# Don't really know.
2581
# Exists and our process: not dead.
2585
if sys.platform == "win32":
2586
is_local_pid_dead = win32utils.is_local_pid_dead
2588
is_local_pid_dead = _posix_is_local_pid_dead
2590
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2591
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2592
if getattr(errno, name, None) is not None]
2595
def fdatasync(fileno):
2596
"""Flush file contents to disk if possible.
2598
:param fileno: Integer OS file handle.
2599
:raises TransportNotPossible: If flushing to disk is not possible.
2601
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2605
except IOError as e:
2606
# See bug #1075108, on some platforms fdatasync exists, but can
2607
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2608
# and reduce the chance of corruption-on-powerloss situations. It
2609
# is not a mandatory call, so it is ok to suppress failures.
2610
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2611
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2615
def ensure_empty_directory_exists(path, exception_class):
2616
"""Make sure a local directory exists and is empty.
2618
If it does not exist, it is created. If it exists and is not empty, an
2619
instance of exception_class is raised.
2623
except OSError as e:
2624
if e.errno != errno.EEXIST:
2626
if os.listdir(path) != []:
2627
raise exception_class(path)
2630
def is_environment_error(evalue):
2631
"""True if exception instance is due to a process environment issue
2633
This includes OSError and IOError, but also other errors that come from
2634
the operating system or core libraries but are not subclasses of those.
2636
if isinstance(evalue, (EnvironmentError, select.error)):
2638
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
2643
def read_mtab(path):
2644
"""Read an fstab-style file and extract mountpoint+filesystem information.
2646
:param path: Path to read from
2647
:yield: Tuples with mountpoints (as bytestrings) and filesystem names
2649
with open(path, 'rb') as f:
2651
if line.startswith(b'#'):
2656
yield cols[1], cols[2].decode('ascii', 'replace')
2659
MTAB_PATH = '/etc/mtab'
2661
class FilesystemFinder(object):
2662
"""Find the filesystem for a particular path."""
2664
def __init__(self, mountpoints):
2667
self._mountpoints = sorted(mountpoints, key=key, reverse=True)
2671
"""Create a FilesystemFinder from an mtab-style file.
2673
Note that this will silenty ignore mtab if it doesn't exist or can not
2676
# TODO(jelmer): Use inotify to be notified when /etc/mtab changes and
2677
# we need to re-read it.
2679
return cls(read_mtab(MTAB_PATH))
2680
except EnvironmentError as e:
2681
trace.mutter('Unable to read mtab: %s', e)
2684
def find(self, path):
2685
"""Find the filesystem used by a particular path.
2687
:param path: Path to find (bytestring or text type)
2688
:return: Filesystem name (as text type) or None, if the filesystem is
2691
for mountpoint, filesystem in self._mountpoints:
2692
if is_inside(mountpoint, path):
2697
_FILESYSTEM_FINDER = None
2700
def get_fs_type(path):
2701
"""Return the filesystem type for the partition a path is in.
2703
:param path: Path to search filesystem type for
2704
:return: A FS type, as string. E.g. "ext2"
2706
global _FILESYSTEM_FINDER
2707
if _FILESYSTEM_FINDER is None:
2708
_FILESYSTEM_FINDER = FilesystemFinder.from_mtab()
2710
if not isinstance(path, bytes):
2711
path = path.encode(_fs_enc)
2713
return _FILESYSTEM_FINDER.find(path)
2717
perf_counter = time.perf_counter
2719
perf_counter = time.clock
2324
def getuser_unicode():
2325
"""Return the username as unicode.
2328
user_encoding = get_user_encoding()
2329
username = getpass.getuser().decode(user_encoding)
2330
except UnicodeDecodeError:
2331
raise errors.BzrError("Can't decode username as %s." % \