20
from stat import S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE
20
from stat import (S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE,
21
S_ISCHR, S_ISBLK, S_ISFIFO, S_ISSOCK)
25
27
from bzrlib.lazy_import import lazy_import
26
28
lazy_import(globals(), """
27
29
from datetime import datetime
30
31
from ntpath import (abspath as _nt_abspath,
32
33
normpath as _nt_normpath,
90
93
# be opened in binary mode, rather than text mode.
91
94
# On other platforms, O_BINARY doesn't exist, because
92
95
# they always open in binary mode, so it is okay to
93
# OR with 0 on those platforms.
94
# O_NOINHERIT and O_TEXT exists only on win32 too.
96
# OR with 0 on those platforms
95
97
O_BINARY = getattr(os, 'O_BINARY', 0)
96
O_TEXT = getattr(os, 'O_TEXT', 0)
97
O_NOINHERIT = getattr(os, 'O_NOINHERIT', 0)
100
100
def get_unicode_argv():
361
361
return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
364
def _add_rename_error_details(e, old, new):
365
new_e = OSError(e.errno, "failed to rename %s to %s: %s"
366
% (old, new, e.strerror))
368
new_e.to_filename = new
372
364
def _win32_rename(old, new):
373
365
"""We expect to be able to atomically replace 'new' with old.
376
368
and then deleted.
379
fancy_rename(old, new, rename_func=_wrapped_rename, unlink_func=os.unlink)
371
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
380
372
except OSError, e:
381
373
if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
382
374
# If we try to rename a non-existant file onto cwd, we get
390
def _wrapped_rename(old, new):
391
"""Rename a file or directory"""
394
except (IOError, OSError), e:
395
# this is eventually called by all rename-like functions, so should
397
raise _add_rename_error_details(e, old, new)
400
382
def _mac_getcwd():
401
383
return unicodedata.normalize('NFC', os.getcwdu())
407
389
realpath = _posix_realpath
408
390
pathjoin = os.path.join
409
391
normpath = os.path.normpath
410
rename = _wrapped_rename # overridden below on win32
411
392
getcwd = os.getcwdu
412
394
dirname = os.path.dirname
413
395
basename = os.path.basename
414
396
split = os.path.split
689
671
def sha_file_by_name(fname):
690
672
"""Calculate the SHA1 of a file by reading the full text"""
692
f = os.open(fname, os.O_RDONLY | O_BINARY | O_NOINHERIT)
674
f = os.open(fname, os.O_RDONLY | O_BINARY)
695
677
b = os.read(f, 1<<16)
1150
1132
def relpath(base, path):
1151
"""Return path relative to base, or raise PathNotChild exception.
1133
"""Return path relative to base, or raise exception.
1153
1135
The path may be either an absolute path or a path relative to the
1154
1136
current working directory.
1156
1138
os.path.commonprefix (python2.4) has a bad bug that it works just
1157
1139
on string prefixes, assuming that '/u' is a prefix of '/u2'. This
1158
1140
avoids that problem.
1160
NOTE: `base` should not have a trailing slash otherwise you'll get
1161
PathNotChild exceptions regardless of `path`.
1164
1143
if len(base) < MIN_ABS_PATHLENGTH:
1375
1354
normalized_filename = _inaccessible_normalized_filename
1378
def set_signal_handler(signum, handler, restart_syscall=True):
1379
"""A wrapper for signal.signal that also calls siginterrupt(signum, False)
1380
on platforms that support that.
1382
:param restart_syscall: if set, allow syscalls interrupted by a signal to
1383
automatically restart (by calling `signal.siginterrupt(signum,
1384
False)`). May be ignored if the feature is not available on this
1385
platform or Python version.
1389
siginterrupt = signal.siginterrupt
1391
# This python implementation doesn't provide signal support, hence no
1394
except AttributeError:
1395
# siginterrupt doesn't exist on this platform, or for this version
1397
siginterrupt = lambda signum, flag: None
1399
def sig_handler(*args):
1400
# Python resets the siginterrupt flag when a signal is
1401
# received. <http://bugs.python.org/issue8354>
1402
# As a workaround for some cases, set it back the way we want it.
1403
siginterrupt(signum, False)
1404
# Now run the handler function passed to set_signal_handler.
1407
sig_handler = handler
1408
old_handler = signal.signal(signum, sig_handler)
1410
siginterrupt(signum, False)
1414
1357
default_terminal_width = 80
1415
1358
"""The default terminal width for ttys.
1509
1452
_registered_sigwinch = False
1510
1454
def watch_sigwinch():
1511
"""Register for SIGWINCH, once and only once.
1513
Do nothing if the signal module is not available.
1455
"""Register for SIGWINCH, once and only once."""
1515
1456
global _registered_sigwinch
1516
1457
if not _registered_sigwinch:
1519
if getattr(signal, "SIGWINCH", None) is not None:
1520
set_signal_handler(signal.SIGWINCH, _terminal_size_changed)
1522
# python doesn't provide signal support, nothing we can do about it
1458
if sys.platform == 'win32':
1459
# Martin (gz) mentioned WINDOW_BUFFER_SIZE_RECORD from
1460
# ReadConsoleInput but I've no idea how to plug that in
1461
# the current design -- vila 20091216
1464
signal.signal(signal.SIGWINCH, _terminal_size_changed)
1524
1465
_registered_sigwinch = True
1847
1788
real_handlers[kind](abspath, relpath)
1850
def copy_ownership_from_path(dst, src=None):
1851
"""Copy usr/grp ownership from src file/dir to dst file/dir.
1853
If src is None, the containing directory is used as source. If chown
1854
fails, the error is ignored and a warning is printed.
1856
chown = getattr(os, 'chown', None)
1861
src = os.path.dirname(dst)
1867
chown(dst, s.st_uid, s.st_gid)
1869
trace.warning("Unable to copy ownership from '%s' to '%s': IOError: %s." % (src, dst, e))
1872
1791
def path_prefix_key(path):
1873
1792
"""Generate a prefix-order path key for path.
1974
1893
return socket.gethostname().decode(get_user_encoding())
1977
# We must not read/write any more than 64k at a time from/to a socket so we
1978
# don't risk "no buffer space available" errors on some platforms. Windows in
1979
# particular is likely to throw WSAECONNABORTED or WSAENOBUFS if given too much
1981
MAX_SOCKET_CHUNK = 64 * 1024
1983
def read_bytes_from_socket(sock, report_activity=None,
1984
max_read_size=MAX_SOCKET_CHUNK):
1985
"""Read up to max_read_size of bytes from sock and notify of progress.
1987
Translates "Connection reset by peer" into file-like EOF (return an
1988
empty string rather than raise an error), and repeats the recv if
1989
interrupted by a signal.
1993
bytes = sock.recv(max_read_size)
1994
except socket.error, e:
1996
if eno == getattr(errno, "WSAECONNRESET", errno.ECONNRESET):
1997
# The connection was closed by the other side. Callers expect
1998
# an empty string to signal end-of-stream.
2000
elif eno == errno.EINTR:
2001
# Retry the interrupted recv.
2005
if report_activity is not None:
2006
report_activity(len(bytes), 'read')
2010
def recv_all(socket, count):
2011
"""Receive an exact number of bytes.
2013
Regular Socket.recv() may return less than the requested number of bytes,
2014
depending on what's in the OS buffer. MSG_WAITALL is not available
2015
on all platforms, but this should work everywhere. This will return
2016
less than the requested amount if the remote end closes.
2018
This isn't optimized and is intended mostly for use in testing.
2021
while len(b) < count:
2022
new = read_bytes_from_socket(socket, None, count - len(b))
1896
@deprecated_function(deprecated_in((2, 2, 0)))
1897
def recv_all(socket, bytes):
1898
"""See bzrlib.tests.test_smart_transport._recv_all"""
1899
return test_smart_transport._recv_all(socket, bytes)
1902
_MAX_SOCKET_CHUNK = 64 * 1024
2029
1904
def send_all(sock, bytes, report_activity=None):
2030
1905
"""Send all bytes on a socket.
2033
1908
some platforms, and catches EINTR which may be thrown if the send is
2034
1909
interrupted by a signal.
2036
This is preferred to socket.sendall(), because it avoids portability bugs
2037
and provides activity reporting.
1911
This is preferred to socket.sendall(), because it avoids bugs and provides
1912
reasonable activity reporting.
2039
1914
:param report_activity: Call this as bytes are read, see
2040
1915
Transport._report_activity
2043
1918
byte_count = len(bytes)
2044
1919
while sent_total < byte_count:
2046
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
1921
sent = sock.send(buffer(bytes, sent_total, _MAX_SOCKET_CHUNK))
2047
1922
except socket.error, e:
2048
1923
if e.args[0] != errno.EINTR:
2261
2136
data, _ = self.encode(object, self.errors)
2262
2137
self.stream.write(data)
2264
if sys.platform == 'win32':
2265
def open_file(filename, mode='r', bufsize=-1):
2266
"""This function is used to override the ``open`` builtin.
2268
But it uses O_NOINHERIT flag so the file handle is not inherited by
2269
child processes. Deleting or renaming a closed file opened with this
2270
function is not blocking child processes.
2272
writing = 'w' in mode
2273
appending = 'a' in mode
2274
updating = '+' in mode
2275
binary = 'b' in mode
2278
# see http://msdn.microsoft.com/en-us/library/yeby3zcb%28VS.71%29.aspx
2279
# for flags for each modes.
2289
flags |= os.O_WRONLY
2290
flags |= os.O_CREAT | os.O_TRUNC
2295
flags |= os.O_WRONLY
2296
flags |= os.O_CREAT | os.O_APPEND
2301
flags |= os.O_RDONLY
2303
return os.fdopen(os.open(filename, flags), mode, bufsize)
2308
def getuser_unicode():
2309
"""Return the username as unicode.
2312
user_encoding = get_user_encoding()
2313
username = getpass.getuser().decode(user_encoding)
2314
except UnicodeDecodeError:
2315
raise errors.BzrError("Can't decode username as %s." % \
added
removed
bzrlib/osutils.py
