967
967
# they tend to happen very early in startup when we can't check config
968
968
# files etc, and also we want to report all failures but not spam the user
969
969
# with 10 warnings.
970
from bzrlib import trace
971
970
exception_str = str(exception)
972
971
if exception_str not in _extension_load_failures:
973
972
trace.mutter("failed to load compiled extension: %s" % exception_str)
1462
1461
# a similar effect.
1464
1463
# If BZR_COLUMNS is set, take it, user is always right
1464
# Except if they specified 0 in which case, impose no limit here
1466
return int(os.environ['BZR_COLUMNS'])
1466
width = int(os.environ['BZR_COLUMNS'])
1467
1467
except (KeyError, ValueError):
1469
if width is not None:
1470
1475
isatty = getattr(sys.stdout, 'isatty', None)
1471
1476
if isatty is None or not isatty():
1875
1880
s = os.stat(src)
1876
1881
chown(dst, s.st_uid, s.st_gid)
1877
1882
except OSError, e:
1878
trace.warning("Unable to copy ownership from '%s' to '%s': IOError: %s." % (src, dst, e))
1884
'Unable to copy ownership from "%s" to "%s". '
1885
'You may want to set it manually.', src, dst)
1886
trace.log_exception_quietly()
1881
1889
def path_prefix_key(path):
1993
2001
# data at once.
1994
2002
MAX_SOCKET_CHUNK = 64 * 1024
2004
_end_of_stream_errors = [errno.ECONNRESET]
2005
for _eno in ['WSAECONNRESET', 'WSAECONNABORTED']:
2006
_eno = getattr(errno, _eno, None)
2007
if _eno is not None:
2008
_end_of_stream_errors.append(_eno)
1996
2012
def read_bytes_from_socket(sock, report_activity=None,
1997
2013
max_read_size=MAX_SOCKET_CHUNK):
1998
2014
"""Read up to max_read_size of bytes from sock and notify of progress.
2006
2022
bytes = sock.recv(max_read_size)
2007
2023
except socket.error, e:
2008
2024
eno = e.args[0]
2009
if eno == getattr(errno, "WSAECONNRESET", errno.ECONNRESET):
2025
if eno in _end_of_stream_errors:
2010
2026
# The connection was closed by the other side. Callers expect
2011
2027
# an empty string to signal end-of-stream.
2354
2370
raise errors.BzrError("Can't decode username as %s." % \
2356
2372
return username
2375
def available_backup_name(base, exists):
2376
"""Find a non-existing backup file name.
2378
This will *not* create anything, this only return a 'free' entry. This
2379
should be used for checking names in a directory below a locked
2380
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2381
Leap) and generally discouraged.
2383
:param base: The base name.
2385
:param exists: A callable returning True if the path parameter exists.
2388
name = "%s.~%d~" % (base, counter)
2391
name = "%s.~%d~" % (base, counter)
2395
def set_fd_cloexec(fd):
2396
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2397
support for this is not available.
2401
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2402
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2403
except (ImportError, AttributeError):
2404
# Either the fcntl module or specific constants are not present
2408
def find_executable_on_path(name):
2409
"""Finds an executable on the PATH.
2411
On Windows, this will try to append each extension in the PATHEXT
2412
environment variable to the name, if it cannot be found with the name
2415
:param name: The base name of the executable.
2416
:return: The path to the executable found or None.
2418
path = os.environ.get('PATH')
2421
path = path.split(os.pathsep)
2422
if sys.platform == 'win32':
2423
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2424
exts = [ext.lower() for ext in exts]
2425
base, ext = os.path.splitext(name)
2427
if ext.lower() not in exts:
2435
f = os.path.join(d, name) + ext
2436
if os.access(f, os.X_OK):