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(), """
89
93
# be opened in binary mode, rather than text mode.
90
94
# On other platforms, O_BINARY doesn't exist, because
91
95
# they always open in binary mode, so it is okay to
92
# OR with 0 on those platforms.
93
# O_NOINHERIT and O_TEXT exists only on win32 too.
96
# OR with 0 on those platforms
94
97
O_BINARY = getattr(os, 'O_BINARY', 0)
95
O_TEXT = getattr(os, 'O_TEXT', 0)
96
O_NOINHERIT = getattr(os, 'O_NOINHERIT', 0)
99
100
def get_unicode_argv():
360
361
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
364
def _win32_rename(old, new):
372
365
"""We expect to be able to atomically replace 'new' with old.
375
368
and then deleted.
378
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)
379
372
except OSError, e:
380
373
if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
381
374
# If we try to rename a non-existant file onto cwd, we get
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
382
def _mac_getcwd():
400
383
return unicodedata.normalize('NFC', os.getcwdu())
406
389
realpath = _posix_realpath
407
390
pathjoin = os.path.join
408
391
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
410
392
getcwd = os.getcwdu
411
394
dirname = os.path.dirname
412
395
basename = os.path.basename
413
396
split = os.path.split
688
671
def sha_file_by_name(fname):
689
672
"""Calculate the SHA1 of a file by reading the full text"""
691
f = os.open(fname, os.O_RDONLY | O_BINARY | O_NOINHERIT)
674
f = os.open(fname, os.O_RDONLY | O_BINARY)
694
677
b = os.read(f, 1<<16)
1149
1132
def relpath(base, path):
1150
"""Return path relative to base, or raise PathNotChild exception.
1133
"""Return path relative to base, or raise exception.
1152
1135
The path may be either an absolute path or a path relative to the
1153
1136
current working directory.
1155
1138
os.path.commonprefix (python2.4) has a bad bug that it works just
1156
1139
on string prefixes, assuming that '/u' is a prefix of '/u2'. This
1157
1140
avoids that problem.
1159
NOTE: `base` should not have a trailing slash otherwise you'll get
1160
PathNotChild exceptions regardless of `path`.
1163
1143
if len(base) < MIN_ABS_PATHLENGTH:
1374
1354
normalized_filename = _inaccessible_normalized_filename
1377
def set_signal_handler(signum, handler, restart_syscall=True):
1378
"""A wrapper for signal.signal that also calls siginterrupt(signum, False)
1379
on platforms that support that.
1381
:param restart_syscall: if set, allow syscalls interrupted by a signal to
1382
automatically restart (by calling `signal.siginterrupt(signum,
1383
False)`). May be ignored if the feature is not available on this
1384
platform or Python version.
1388
siginterrupt = signal.siginterrupt
1390
# This python implementation doesn't provide signal support, hence no
1393
except AttributeError:
1394
# siginterrupt doesn't exist on this platform, or for this version
1396
siginterrupt = lambda signum, flag: None
1398
def sig_handler(*args):
1399
# Python resets the siginterrupt flag when a signal is
1400
# received. <http://bugs.python.org/issue8354>
1401
# As a workaround for some cases, set it back the way we want it.
1402
siginterrupt(signum, False)
1403
# Now run the handler function passed to set_signal_handler.
1406
sig_handler = handler
1407
old_handler = signal.signal(signum, sig_handler)
1409
siginterrupt(signum, False)
1413
1357
default_terminal_width = 80
1414
1358
"""The default terminal width for ttys.
1508
1452
_registered_sigwinch = False
1509
1454
def watch_sigwinch():
1510
"""Register for SIGWINCH, once and only once.
1512
Do nothing if the signal module is not available.
1455
"""Register for SIGWINCH, once and only once."""
1514
1456
global _registered_sigwinch
1515
1457
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
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)
1523
1465
_registered_sigwinch = True
1846
1788
real_handlers[kind](abspath, relpath)
1849
def copy_ownership_from_path(dst, src=None):
1850
"""Copy usr/grp ownership from src file/dir to dst file/dir.
1852
If src is None, the containing directory is used as source. If chown
1853
fails, the error is ignored and a warning is printed.
1855
chown = getattr(os, 'chown', None)
1860
src = os.path.dirname(dst)
1866
chown(dst, s.st_uid, s.st_gid)
1868
trace.warning("Unable to copy ownership from '%s' to '%s': IOError: %s." % (src, dst, e))
1871
1791
def path_prefix_key(path):
1872
1792
"""Generate a prefix-order path key for path.
1973
1893
return socket.gethostname().decode(get_user_encoding())
1976
# We must not read/write any more than 64k at a time from/to a socket so we
1977
# don't risk "no buffer space available" errors on some platforms. Windows in
1978
# particular is likely to throw WSAECONNABORTED or WSAENOBUFS if given too much
1980
MAX_SOCKET_CHUNK = 64 * 1024
1982
def read_bytes_from_socket(sock, report_activity=None,
1983
max_read_size=MAX_SOCKET_CHUNK):
1984
"""Read up to max_read_size of bytes from sock and notify of progress.
1986
Translates "Connection reset by peer" into file-like EOF (return an
1987
empty string rather than raise an error), and repeats the recv if
1988
interrupted by a signal.
1992
bytes = sock.recv(max_read_size)
1993
except socket.error, e:
1995
if eno == getattr(errno, "WSAECONNRESET", errno.ECONNRESET):
1996
# The connection was closed by the other side. Callers expect
1997
# an empty string to signal end-of-stream.
1999
elif eno == errno.EINTR:
2000
# Retry the interrupted recv.
2004
if report_activity is not None:
2005
report_activity(len(bytes), 'read')
2009
def recv_all(socket, count):
2010
"""Receive an exact number of bytes.
2012
Regular Socket.recv() may return less than the requested number of bytes,
2013
depending on what's in the OS buffer. MSG_WAITALL is not available
2014
on all platforms, but this should work everywhere. This will return
2015
less than the requested amount if the remote end closes.
2017
This isn't optimized and is intended mostly for use in testing.
2020
while len(b) < count:
2021
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
2028
1904
def send_all(sock, bytes, report_activity=None):
2029
1905
"""Send all bytes on a socket.
2032
1908
some platforms, and catches EINTR which may be thrown if the send is
2033
1909
interrupted by a signal.
2035
This is preferred to socket.sendall(), because it avoids portability bugs
2036
and provides activity reporting.
1911
This is preferred to socket.sendall(), because it avoids bugs and provides
1912
reasonable activity reporting.
2038
1914
:param report_activity: Call this as bytes are read, see
2039
1915
Transport._report_activity
2042
1918
byte_count = len(bytes)
2043
1919
while sent_total < byte_count:
2045
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
1921
sent = sock.send(buffer(bytes, sent_total, _MAX_SOCKET_CHUNK))
2046
1922
except socket.error, e:
2047
1923
if e.args[0] != errno.EINTR:
2260
2136
data, _ = self.encode(object, self.errors)
2261
2137
self.stream.write(data)
2263
if sys.platform == 'win32':
2264
def open_file(filename, mode='r', bufsize=-1):
2265
"""This function is used to override the ``open`` builtin.
2267
But it uses O_NOINHERIT flag so the file handle is not inherited by
2268
child processes. Deleting or renaming a closed file opened with this
2269
function is not blocking child processes.
2271
writing = 'w' in mode
2272
appending = 'a' in mode
2273
updating = '+' in mode
2274
binary = 'b' in mode
2277
# see http://msdn.microsoft.com/en-us/library/yeby3zcb%28VS.71%29.aspx
2278
# for flags for each modes.
2288
flags |= os.O_WRONLY
2289
flags |= os.O_CREAT | os.O_TRUNC
2294
flags |= os.O_WRONLY
2295
flags |= os.O_CREAT | os.O_APPEND
2300
flags |= os.O_RDONLY
2302
return os.fdopen(os.open(filename, flags), mode, bufsize)
added
removed
bzrlib/osutils.py
