14
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# along with this program; if not, write to the Free Software
15
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from __future__ import absolute_import
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from stat import S_ISREG, S_ISDIR, S_ISLNK, ST_MODE, ST_SIZE
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from bzrlib.lazy_import import lazy_import
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from .lazy_import import lazy_import
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lazy_import(globals(), """
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from datetime import datetime
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from ntpath import (abspath as _nt_abspath,
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normpath as _nt_normpath,
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realpath as _nt_realpath,
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splitdrive as _nt_splitdrive,
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# We need to import both shutil and rmtree as we export the later on posix
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# and need the former on windows
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from shutil import rmtree
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# We need to import both tempfile and mkdtemp as we export the later on posix
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# and need the former on windows
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from tempfile import (
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from tempfile import mkdtemp
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from breezy.i18n import gettext
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from bzrlib.symbol_versioning import (
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# sha and md5 modules are deprecated in python2.6 but hashlib is available as
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if sys.version_info < (2, 5):
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import md5 as _mod_md5
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import sha as _mod_sha
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from bzrlib import symbol_versioning
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# Cross platform wall-clock time functionality with decent resolution.
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# On Linux ``time.clock`` returns only CPU time. On Windows, ``time.time()``
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# only has a resolution of ~15ms. Note that ``time.clock()`` is not
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# synchronized with ``time.time()``, this is only meant to be used to find
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# delta times by subtracting from another call to this function.
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timer_func = time.time
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if sys.platform == 'win32':
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timer_func = time.clock
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# On win32, O_BINARY is used to indicate the file should
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74
# be opened in binary mode, rather than text mode.
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O_NOINHERIT = getattr(os, 'O_NOINHERIT', 0)
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class UnsupportedTimezoneFormat(errors.BzrError):
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_fmt = ('Unsupported timezone format "%(timezone)s", '
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'options are "utc", "original", "local".')
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def __init__(self, timezone):
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self.timezone = timezone
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93
def get_unicode_argv():
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user_encoding = get_user_encoding()
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return [a.decode(user_encoding) for a in sys.argv[1:]]
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except UnicodeDecodeError:
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raise errors.BzrError(("Parameter '%r' is unsupported by the current "
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raise errors.BzrError(gettext("Parameter {0!r} encoding is unsupported by {1} "
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"application locale.").format(a, user_encoding))
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def make_readonly(filename):
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"""Make a filename read-only."""
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mod = os.lstat(filename).st_mode
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if not stat.S_ISLNK(mod):
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os.chmod(filename, mod)
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chmod_if_possible(filename, mod)
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def make_writable(filename):
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mod = os.lstat(filename).st_mode
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if not stat.S_ISLNK(mod):
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os.chmod(filename, mod)
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chmod_if_possible(filename, mod)
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def chmod_if_possible(filename, mode):
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# Set file mode if that can be safely done.
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# Sometimes even on unix the filesystem won't allow it - see
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# https://bugs.launchpad.net/bzr/+bug/606537
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# It is probably faster to just do the chmod, rather than
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# doing a stat, and then trying to compare
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os.chmod(filename, mode)
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except (IOError, OSError) as e:
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# Permission/access denied seems to commonly happen on smbfs; there's
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# probably no point warning about it.
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# <https://bugs.launchpad.net/bzr/+bug/606537>
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if getattr(e, 'errno') in (errno.EPERM, errno.EACCES):
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trace.mutter("ignore error on chmod of %r: %r" % (
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def minimum_path_selection(paths):
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file_existed = False
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rename_func(new, tmp_name)
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except (errors.NoSuchFile,), e:
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except (errors.NoSuchFile,):
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# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
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# function raises an IOError with errno is None when a rename fails.
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# This then gets caught here.
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if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
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except Exception as e:
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if (getattr(e, 'errno', None) is None
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or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
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or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
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file_existed = True
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# This may throw an exception, in which case success will
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rename_func(old, new)
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except (IOError, OSError), e:
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# source and target may be aliases of each other (e.g. on a
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# case-insensitive filesystem), so we may have accidentally renamed
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# source by when we tried to rename target
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failure_exc = sys.exc_info()
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if (file_existed and e.errno in (None, errno.ENOENT)
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# This may throw an exception, in which case success will
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rename_func(old, new)
276
except (IOError, OSError) as e:
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# source and target may be aliases of each other (e.g. on a
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# case-insensitive filesystem), so we may have accidentally renamed
279
# source by when we tried to rename target
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if (file_existed and e.errno in (None, errno.ENOENT)
264
281
and old.lower() == new.lower()):
265
# source and target are the same file on a case-insensitive
266
# filesystem, so we don't generate an exception
282
# source and target are the same file on a case-insensitive
283
# filesystem, so we don't generate an exception
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# If the file used to exist, rename it back into place
273
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unlink_func(tmp_name)
275
294
rename_func(tmp_name, new)
276
if failure_exc is not None:
277
raise failure_exc[0], failure_exc[1], failure_exc[2]
280
297
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
281
298
# choke on a Unicode string containing a relative path if
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
284
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
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def _posix_abspath(path):
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# jam 20060426 rather than encoding to fsencoding
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# copy posixpath.abspath, but use os.getcwdu instead
288
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if not posixpath.isabs(path):
289
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path = posixpath.join(getcwd(), path)
290
return posixpath.normpath(path)
306
return _posix_normpath(path)
293
309
def _posix_realpath(path):
294
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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)
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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))
297
368
def _win32_fixdrive(path):
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369
"""Force drive letters to be consistent.
303
374
running python.exe under cmd.exe return capital C:\\
304
375
running win32 python inside a cygwin shell returns lowercase c:\\
306
drive, path = _nt_splitdrive(path)
377
drive, path = ntpath.splitdrive(path)
307
378
return drive.upper() + path
310
381
def _win32_abspath(path):
311
# Real _nt_abspath doesn't have a problem with a unicode cwd
312
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
315
def _win98_abspath(path):
316
"""Return the absolute version of a path.
317
Windows 98 safe implementation (python reimplementation
318
of Win32 API function GetFullPathNameW)
323
# \\HOST\path => //HOST/path
324
# //HOST/path => //HOST/path
325
# path => C:/cwd/path
328
# check for absolute path
329
drive = _nt_splitdrive(path)[0]
330
if drive == '' and path[:2] not in('//','\\\\'):
332
# we cannot simply os.path.join cwd and path
333
# because os.path.join('C:','/path') produce '/path'
334
# and this is incorrect
335
if path[:1] in ('/','\\'):
336
cwd = _nt_splitdrive(cwd)[0]
338
path = cwd + '\\' + path
339
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
382
# Real ntpath.abspath doesn't have a problem with a unicode cwd
383
return _win32_fixdrive(ntpath.abspath(path).replace('\\', '/'))
342
386
def _win32_realpath(path):
343
# Real _nt_realpath doesn't have a problem with a unicode cwd
344
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
387
# Real ntpath.realpath doesn't have a problem with a unicode cwd
388
return _win32_fixdrive(ntpath.realpath(path).replace('\\', '/'))
347
391
def _win32_pathjoin(*args):
348
return _nt_join(*args).replace('\\', '/')
392
return ntpath.join(*args).replace('\\', '/')
351
395
def _win32_normpath(path):
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
396
return _win32_fixdrive(ntpath.normpath(path).replace('\\', '/'))
355
399
def _win32_getcwd():
356
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
400
return _win32_fixdrive(_getcwd().replace('\\', '/'))
359
403
def _win32_mkdtemp(*args, **kwargs):
360
404
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
407
def _win32_rename(old, new):
372
408
"""We expect to be able to atomically replace 'new' with old.
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
425
def _mac_getcwd():
400
return unicodedata.normalize('NFC', os.getcwdu())
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)
403
459
# Default is to just use the python builtins, but these can be rebound on
404
460
# particular platforms.
405
461
abspath = _posix_abspath
406
462
realpath = _posix_realpath
407
463
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
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
411
469
dirname = os.path.dirname
412
470
basename = os.path.basename
413
471
split = os.path.split
414
472
splitext = os.path.splitext
415
# These were already imported into local scope
473
# These were already lazily imported into local scope
416
474
# mkdtemp = tempfile.mkdtemp
417
475
# rmtree = shutil.rmtree
419
484
MIN_ABS_PATHLENGTH = 1
422
487
if sys.platform == 'win32':
423
if win32utils.winver == 'Windows 98':
424
abspath = _win98_abspath
426
abspath = _win32_abspath
488
abspath = _win32_abspath
427
489
realpath = _win32_realpath
428
490
pathjoin = _win32_pathjoin
429
491
normpath = _win32_normpath
430
492
getcwd = _win32_getcwd
431
493
mkdtemp = _win32_mkdtemp
432
rename = _win32_rename
494
rename = _rename_wrap_exception(_win32_rename)
496
from . import _walkdirs_win32
500
lstat = _walkdirs_win32.lstat
501
fstat = _walkdirs_win32.fstat
502
wrap_stat = _walkdirs_win32.wrap_stat
434
504
MIN_ABS_PATHLENGTH = 3
471
544
On my standard US Windows XP, the preferred encoding is
472
545
cp1252, but the console is cp437
547
:param trace: If True trace the selected encoding via mutter().
474
from bzrlib.trace import mutter
549
from .trace import mutter
475
550
output_encoding = getattr(sys.stdout, 'encoding', None)
476
551
if not output_encoding:
477
552
input_encoding = getattr(sys.stdin, 'encoding', None)
478
553
if not input_encoding:
479
554
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
556
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
559
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
561
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
565
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
566
if output_encoding == 'cp0':
488
567
# invalid encoding (cp0 means 'no codepage' on Windows)
489
568
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
491
' encoding stdout as osutils.get_user_encoding() %r',
570
mutter('cp0 is invalid encoding.'
571
' encoding stdout as osutils.get_user_encoding() %r',
495
575
codecs.lookup(output_encoding)
496
576
except LookupError:
497
sys.stderr.write('bzr: warning:'
577
sys.stderr.write('brz: warning:'
498
578
' unknown terminal encoding %s.\n'
499
579
' Using encoding %s instead.\n'
500
580
% (output_encoding, get_user_encoding())
502
582
output_encoding = get_user_encoding()
504
584
return output_encoding
878
977
return '%d hours, %d minute%s %s' % (hours, minutes,
879
978
plural_minutes, direction)
882
982
"""Return size of given open file."""
883
return os.fstat(f.fileno())[ST_SIZE]
886
# Define rand_bytes based on platform.
888
# Python 2.4 and later have os.urandom,
889
# but it doesn't work on some arches
891
rand_bytes = os.urandom
892
except (NotImplementedError, AttributeError):
893
# If python doesn't have os.urandom, or it doesn't work,
894
# then try to first pull random data from /dev/urandom
983
return os.fstat(f.fileno())[stat.ST_SIZE]
986
# Alias os.urandom to support platforms (which?) without /dev/urandom and
987
# override if it doesn't work. Avoid checking on windows where there is
988
# significant initialisation cost that can be avoided for some bzr calls.
990
rand_bytes = os.urandom
992
if rand_bytes.__module__ != "nt":
896
rand_bytes = file('/dev/urandom', 'rb').read
897
# Otherwise, use this hack as a last resort
898
except (IOError, OSError):
995
except NotImplementedError:
899
996
# not well seeded, but better than nothing
900
997
def rand_bytes(n):
917
1016
for raw_byte in rand_bytes(num):
918
s += ALNUM[ord(raw_byte) % 36]
1018
s += ALNUM[ord(raw_byte) % 36]
1020
s += ALNUM[raw_byte % 36]
922
## TODO: We could later have path objects that remember their list
923
## decomposition (might be too tricksy though.)
1024
# TODO: We could later have path objects that remember their list
1025
# decomposition (might be too tricksy though.)
925
1027
def splitpath(p):
926
1028
"""Turn string into list of parts."""
927
# split on either delimiter because people might use either on
929
ps = re.split(r'[\\/]', p)
1029
use_bytes = isinstance(p, bytes)
1030
if os.path.sep == '\\':
1031
# split on either delimiter because people might use either on
1034
ps = re.split(b'[\\\\/]', p)
1036
ps = re.split(r'[\\/]', p)
1045
current_empty_dir = (b'.', b'')
1048
current_empty_dir = ('.', '')
934
raise errors.BzrError("sorry, %r not allowed in path" % f)
935
elif (f == '.') or (f == ''):
1053
raise errors.BzrError(gettext("sorry, %r not allowed in path") % f)
1054
elif f in current_empty_dir:
993
1111
def report_extension_load_failures():
994
1112
if not _extension_load_failures:
996
from bzrlib.config import GlobalConfig
997
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
1114
if config.GlobalConfig().suppress_warning('missing_extensions'):
999
1116
# the warnings framework should by default show this only once
1000
from bzrlib.trace import warning
1117
from .trace import warning
1002
"bzr: warning: some compiled extensions could not be loaded; "
1003
"see <https://answers.launchpad.net/bzr/+faq/703>")
1119
"brz: warning: some compiled extensions could not be loaded; "
1120
"see ``brz help missing-extensions``")
1004
1121
# we no longer show the specific missing extensions here, because it makes
1005
1122
# the message too long and scary - see
1006
1123
# https://bugs.launchpad.net/bzr/+bug/430529
1010
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
1011
except ImportError, e:
1127
from ._chunks_to_lines_pyx import chunks_to_lines
1128
except ImportError as e:
1012
1129
failed_to_load_extension(e)
1013
from bzrlib._chunks_to_lines_py import chunks_to_lines
1130
from ._chunks_to_lines_py import chunks_to_lines
1016
1133
def split_lines(s):
1017
1134
"""Split s into lines, but without removing the newline characters."""
1018
1135
# Trivially convert a fulltext into a 'chunked' representation, and let
1019
1136
# chunks_to_lines do the heavy lifting.
1020
if isinstance(s, str):
1137
if isinstance(s, bytes):
1021
1138
# chunks_to_lines only supports 8-bit strings
1022
1139
return chunks_to_lines([s])
1284
1420
return unicode_or_utf8_string.encode('utf-8')
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):
1423
def safe_revision_id(unicode_or_utf8_string):
1293
1424
"""Revision ids should now be utf8, but at one point they were unicode.
1295
1426
: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
1298
1428
:return: None or a utf8 revision id.
1300
1430
if (unicode_or_utf8_string is None
1301
or unicode_or_utf8_string.__class__ == str):
1431
or unicode_or_utf8_string.__class__ == bytes):
1302
1432
return 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):
1433
raise TypeError('Unicode revision ids are no longer supported. '
1434
'Revision id generators should be creating utf8 revision '
1438
def safe_file_id(unicode_or_utf8_string):
1314
1439
"""File ids should now be utf8, but at one point they were unicode.
1316
1441
This is the same as safe_utf8, except it uses the cached encode functions
1424
1557
None is returned if the width can't established precisely.
1427
- if BZR_COLUMNS is set, returns its value
1560
- if BRZ_COLUMNS is set, returns its value
1428
1561
- if there is no controlling terminal, returns None
1562
- query the OS, if the queried size has changed since the last query,
1429
1564
- if COLUMNS is set, returns its value,
1565
- if the OS has a value (even though it's never changed), return its value.
1431
1567
From there, we need to query the OS to get the size of the controlling
1570
On Unices we query the OS by:
1435
1571
- get termios.TIOCGWINSZ
1436
1572
- if an error occurs or a negative value is obtained, returns None
1574
On Windows we query the OS by:
1440
1575
- win32utils.get_console_size() decides,
1441
1576
- returns None on error (provided default value)
1578
# Note to implementors: if changing the rules for determining the width,
1579
# make sure you've considered the behaviour in these cases:
1580
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1581
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1583
# - (add more interesting cases here, if you find any)
1584
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1585
# but we don't want to register a signal handler because it is impossible
1586
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1587
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1588
# time so we can notice if the reported size has changed, which should have
1444
# If BZR_COLUMNS is set, take it, user is always right
1591
# If BRZ_COLUMNS is set, take it, user is always right
1592
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1594
width = int(os.environ['BRZ_COLUMNS'])
1447
1595
except (KeyError, ValueError):
1597
if width is not None:
1450
1603
isatty = getattr(sys.stdout, 'isatty', None)
1451
if isatty is None or not isatty():
1452
# Don't guess, setting BZR_COLUMNS is the recommended way to override.
1604
if isatty is None or not isatty():
1605
# Don't guess, setting BRZ_COLUMNS is the recommended way to override.
1455
# If COLUMNS is set, take it, the terminal knows better (even inside a
1456
# given terminal, the application can decide to set COLUMNS to a lower
1457
# value (splitted screen) or a bigger value (scroll bars))
1609
width, height = os_size = _terminal_size(None, None)
1610
global _first_terminal_size, _terminal_size_state
1611
if _terminal_size_state == 'no_data':
1612
_first_terminal_size = os_size
1613
_terminal_size_state = 'unchanged'
1614
elif (_terminal_size_state == 'unchanged' and
1615
_first_terminal_size != os_size):
1616
_terminal_size_state = 'changed'
1618
# If the OS claims to know how wide the terminal is, and this value has
1619
# ever changed, use that.
1620
if _terminal_size_state == 'changed':
1621
if width is not None and width > 0:
1624
# If COLUMNS is set, use it.
1459
1626
return int(os.environ['COLUMNS'])
1460
1627
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1630
# Finally, use an unchanged size from the OS, if we have one.
1631
if _terminal_size_state == 'unchanged':
1632
if width is not None and width > 0:
1635
# The width could not be determined.
1471
1639
def _win32_terminal_size(width, height):
1472
width, height = win32utils.get_console_size(defaultx=width, defaulty=height)
1640
width, height = win32utils.get_console_size(
1641
defaultx=width, defaulty=height)
1473
1642
return width, height
1476
1645
def _ioctl_terminal_size(width, height):
1478
import struct, fcntl, termios
1479
1650
s = struct.pack('HHHH', 0, 0, 0, 0)
1480
1651
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1481
1652
height, width = struct.unpack('HHHH', x)[0:2]
1498
1670
_terminal_size = _ioctl_terminal_size
1501
def _terminal_size_changed(signum, frame):
1502
"""Set COLUMNS upon receiving a SIGnal for WINdow size CHange."""
1503
width, height = _terminal_size(None, None)
1504
if width is not None:
1505
os.environ['COLUMNS'] = str(width)
1508
_registered_sigwinch = False
1509
def watch_sigwinch():
1510
"""Register for SIGWINCH, once and only once.
1512
Do nothing if the signal module is not available.
1514
global _registered_sigwinch
1515
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
1523
_registered_sigwinch = True
1526
def supports_executable():
1527
return sys.platform != "win32"
1673
def supports_executable(path):
1674
"""Return if filesystem at path supports executable bit.
1676
:param path: Path for which to check the file system
1677
:return: boolean indicating whether executable bit can be stored/relied upon
1679
if sys.platform == 'win32':
1682
fs_type = get_fs_type(path)
1683
except errors.DependencyNotPresent as e:
1684
trace.mutter('Unable to get fs type for %r: %s', path, e)
1686
if fs_type in ('vfat', 'ntfs'):
1687
# filesystems known to not support executable bit
1692
def supports_symlinks(path):
1693
"""Return if the filesystem at path supports the creation of symbolic links.
1696
if not has_symlinks():
1699
fs_type = get_fs_type(path)
1700
except errors.DependencyNotPresent as e:
1701
trace.mutter('Unable to get fs type for %r: %s', path, e)
1703
if fs_type in ('vfat', 'ntfs'):
1704
# filesystems known to not support symlinks
1530
1709
def supports_posix_readonly():
1779
1952
See DirReader.read_dir for details.
1781
1954
_utf8_encode = self._utf8_encode
1956
def _fs_decode(s): return s.decode(_fs_enc)
1958
def _fs_encode(s): return s.encode(_fs_enc)
1782
1959
_lstat = os.lstat
1783
1960
_listdir = os.listdir
1784
1961
_kind_from_mode = file_kind_from_stat_mode
1787
relprefix = prefix + '/'
1964
relprefix = prefix + b'/'
1790
top_slash = top + u'/'
1967
top_slash = top + '/'
1793
1970
append = dirblock.append
1794
for name in sorted(_listdir(top)):
1971
for name_native in _listdir(top.encode('utf-8')):
1796
name_utf8 = _utf8_encode(name)[0]
1973
name = _fs_decode(name_native)
1797
1974
except UnicodeDecodeError:
1798
1975
raise errors.BadFilenameEncoding(
1799
_utf8_encode(relprefix)[0] + name, _fs_enc)
1976
relprefix + name_native, _fs_enc)
1977
name_utf8 = _utf8_encode(name)[0]
1800
1978
abspath = top_slash + name
1801
1979
statvalue = _lstat(abspath)
1802
1980
kind = _kind_from_mode(statvalue.st_mode)
1803
1981
append((relprefix + name_utf8, name_utf8, kind, statvalue, abspath))
1982
return sorted(dirblock)
1807
1985
def copy_tree(from_path, to_path, handlers={}):
1874
2055
This can be used to sort paths in the same way that walkdirs does.
1876
return (dirname(path) , path)
2057
return (dirname(path), path)
1879
2060
def compare_paths_prefix_order(path_a, path_b):
1880
2061
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1881
2062
key_a = path_prefix_key(path_a)
1882
2063
key_b = path_prefix_key(path_b)
1883
return cmp(key_a, key_b)
2064
return (key_a > key_b) - (key_a < key_b)
1886
2067
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
2070
def get_user_encoding():
1890
2071
"""Find out what the preferred user encoding is.
1892
2073
This is generally the encoding that is used for command line parameters
1893
2074
and file contents. This may be different from the terminal encoding
1894
2075
or the filesystem encoding.
1896
:param use_cache: Enable cache for detected encoding.
1897
(This parameter is turned on by default,
1898
and required only for selftesting)
1900
2077
:return: A string defining the preferred user encoding
1902
2079
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
2080
if _cached_user_encoding is not None:
1904
2081
return _cached_user_encoding
1906
if sys.platform == 'darwin':
1907
# python locale.getpreferredencoding() always return
1908
# 'mac-roman' on darwin. That's a lie.
1909
sys.platform = 'posix'
1911
if os.environ.get('LANG', None) is None:
1912
# If LANG is not set, we end up with 'ascii', which is bad
1913
# ('mac-roman' is more than ascii), so we set a default which
1914
# will give us UTF-8 (which appears to work in all cases on
1915
# OSX). Users are still free to override LANG of course, as
1916
# long as it give us something meaningful. This work-around
1917
# *may* not be needed with python 3k and/or OSX 10.5, but will
1918
# work with them too -- vila 20080908
1919
os.environ['LANG'] = 'en_US.UTF-8'
1922
sys.platform = 'darwin'
2083
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2084
# Use the existing locale settings and call nl_langinfo directly
2085
# rather than going through getpreferredencoding. This avoids
2086
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2087
# possibility of the setlocale call throwing an error.
2088
user_encoding = locale.nl_langinfo(locale.CODESET)
2090
# GZ 2011-12-19: On windows could call GetACP directly instead.
2091
user_encoding = locale.getpreferredencoding(False)
1927
user_encoding = locale.getpreferredencoding()
1928
except locale.Error, e:
1929
sys.stderr.write('bzr: warning: %s\n'
1930
' Could not determine what text encoding to use.\n'
1931
' This error usually means your Python interpreter\n'
1932
' doesn\'t support the locale set by $LANG (%s)\n'
1933
" Continuing with ascii encoding.\n"
1934
% (e, os.environ.get('LANG')))
1935
user_encoding = 'ascii'
1937
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1938
# treat that as ASCII, and not support printing unicode characters to the
1941
# For python scripts run under vim, we get '', so also treat that as ASCII
1942
if user_encoding in (None, 'cp0', ''):
1943
user_encoding = 'ascii'
1947
codecs.lookup(user_encoding)
1949
sys.stderr.write('bzr: warning:'
2094
user_encoding = codecs.lookup(user_encoding).name
2096
if user_encoding not in ("", "cp0"):
2097
sys.stderr.write('brz: warning:'
1950
2098
' unknown encoding %s.'
1951
2099
' Continuing with ascii encoding.\n'
1952
2100
% user_encoding
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = user_encoding
2102
user_encoding = 'ascii'
2104
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2105
if user_encoding == 'ascii':
2106
if sys.platform == 'darwin':
2107
# OSX is special-cased in Python to have a UTF-8 filesystem
2108
# encoding and previously had LANG set here if not present.
2109
user_encoding = 'utf-8'
2110
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2111
# for some other posix platforms as well.
2113
_cached_user_encoding = user_encoding
1959
2114
return user_encoding
2117
def get_diff_header_encoding():
2118
return get_terminal_encoding()
1962
2121
def get_host_name():
1963
2122
"""Return the current unicode host name.
1979
2139
# data at once.
1980
2140
MAX_SOCKET_CHUNK = 64 * 1024
2142
_end_of_stream_errors = [errno.ECONNRESET, errno.EPIPE, errno.EINVAL]
2143
for _eno in ['WSAECONNRESET', 'WSAECONNABORTED']:
2144
_eno = getattr(errno, _eno, None)
2145
if _eno is not None:
2146
_end_of_stream_errors.append(_eno)
1982
2150
def read_bytes_from_socket(sock, report_activity=None,
1983
max_read_size=MAX_SOCKET_CHUNK):
2151
max_read_size=MAX_SOCKET_CHUNK):
1984
2152
"""Read up to max_read_size of bytes from sock and notify of progress.
1986
2154
Translates "Connection reset by peer" into file-like EOF (return an
1987
2155
empty string rather than raise an error), and repeats the recv if
1988
2156
interrupted by a signal.
1992
bytes = sock.recv(max_read_size)
1993
except socket.error, e:
2160
data = sock.recv(max_read_size)
2161
except socket.error as e:
1994
2162
eno = e.args[0]
1995
if eno == getattr(errno, "WSAECONNRESET", errno.ECONNRESET):
2163
if eno in _end_of_stream_errors:
1996
2164
# The connection was closed by the other side. Callers expect
1997
2165
# an empty string to signal end-of-stream.
1999
2167
elif eno == errno.EINTR:
2000
2168
# Retry the interrupted recv.
2004
2172
if report_activity is not None:
2005
report_activity(len(bytes), 'read')
2173
report_activity(len(data), 'read')
2009
2177
def recv_all(socket, count):
2017
2185
This isn't optimized and is intended mostly for use in testing.
2020
2188
while len(b) < count:
2021
2189
new = read_bytes_from_socket(socket, None, count - len(b))
2028
2196
def send_all(sock, bytes, report_activity=None):
2029
2197
"""Send all bytes on a socket.
2031
2199
Breaks large blocks in smaller chunks to avoid buffering limitations on
2032
2200
some platforms, and catches EINTR which may be thrown if the send is
2033
2201
interrupted by a signal.
2035
2203
This is preferred to socket.sendall(), because it avoids portability bugs
2036
2204
and provides activity reporting.
2038
2206
:param report_activity: Call this as bytes are read, see
2039
2207
Transport._report_activity
2042
2210
byte_count = len(bytes)
2211
view = memoryview(bytes)
2043
2212
while sent_total < byte_count:
2045
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2046
except socket.error, e:
2214
sent = sock.send(view[sent_total:sent_total + MAX_SOCKET_CHUNK])
2215
except (socket.error, IOError) as e:
2216
if e.args[0] in _end_of_stream_errors:
2217
raise errors.ConnectionReset(
2218
"Error trying to write to socket", e)
2047
2219
if e.args[0] != errno.EINTR:
2223
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2050
2225
sent_total += sent
2051
report_activity(sent, 'write')
2226
if report_activity is not None:
2227
report_activity(sent, 'write')
2230
def connect_socket(address):
2231
# Slight variation of the socket.create_connection() function (provided by
2232
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2233
# provide it for previous python versions. Also, we don't use the timeout
2234
# parameter (provided by the python implementation) so we don't implement
2236
err = socket.error('getaddrinfo returns an empty list')
2237
host, port = address
2238
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2239
af, socktype, proto, canonname, sa = res
2242
sock = socket.socket(af, socktype, proto)
2246
except socket.error as e:
2248
# 'err' is now the most recent error
2249
if sock is not None:
2054
2254
def dereference_path(path):
2082
2282
If and when pkg_resources becomes a standard library, this routine
2083
2283
can delegate to it.
2085
# Check package name is within bzrlib
2086
if package == "bzrlib":
2285
# Check package name is within breezy
2286
if package == "breezy":
2087
2287
resource_relpath = resource_name
2088
elif package.startswith("bzrlib."):
2089
package = package[len("bzrlib."):].replace('.', os.sep)
2288
elif package.startswith("breezy."):
2289
package = package[len("breezy."):].replace('.', os.sep)
2090
2290
resource_relpath = pathjoin(package, resource_name)
2092
raise errors.BzrError('resource package %s not in bzrlib' % package)
2292
raise errors.BzrError('resource package %s not in breezy' % package)
2094
2294
# Map the resource to a file and read its contents
2095
base = dirname(bzrlib.__file__)
2295
base = dirname(breezy.__file__)
2096
2296
if getattr(sys, 'frozen', None): # bzr.exe
2097
2297
base = abspath(pathjoin(base, '..', '..'))
2098
filename = pathjoin(base, resource_relpath)
2099
return open(filename, 'rU').read()
2298
with open(pathjoin(base, resource_relpath), "rt") as f:
2102
2302
def file_kind_from_stat_mode_thunk(mode):
2103
2303
global file_kind_from_stat_mode
2104
2304
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2106
from bzrlib._readdir_pyx import UTF8DirReader
2306
from ._readdir_pyx import UTF8DirReader
2107
2307
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2108
except ImportError, e:
2109
2309
# This is one time where we won't warn that an extension failed to
2110
2310
# load. The extension is never available on Windows anyway.
2111
from bzrlib._readdir_py import (
2311
from ._readdir_py import (
2112
2312
_kind_from_mode as file_kind_from_stat_mode
2114
2314
return file_kind_from_stat_mode(mode)
2115
2317
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2320
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2324
except OSError as e:
2122
2325
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2326
raise errors.NoSuchFile(f)
2330
def file_kind(f, _lstat=os.lstat):
2331
stat_value = file_stat(f, _lstat)
2332
return file_kind_from_stat_mode(stat_value.st_mode)
2127
2335
def until_no_eintr(f, *a, **kw):
2128
2336
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2338
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2339
if EINTR does occur. This is typically only true for low-level operations
2132
2340
like os.read. If in any doubt, don't use this.
2134
2342
Keep in mind that this is not a complete solution to EINTR. There is
2135
2343
probably code in the Python standard library and other dependencies that
2136
2344
may encounter EINTR if a signal arrives (and there is signal handler for
2137
that signal). So this function can reduce the impact for IO that bzrlib
2345
that signal). So this function can reduce the impact for IO that breezy
2138
2346
directly controls, but it is not a complete solution.
2140
2348
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2143
2351
return f(*a, **kw)
2144
except (IOError, OSError), e:
2352
except (IOError, OSError) as e:
2145
2353
if e.errno == errno.EINTR:
2150
def re_compile_checked(re_string, flags=0, where=""):
2151
"""Return a compiled re, or raise a sensible error.
2153
This should only be used when compiling user-supplied REs.
2155
:param re_string: Text form of regular expression.
2156
:param flags: eg re.IGNORECASE
2157
:param where: Message explaining to the user the context where
2158
it occurred, eg 'log search filter'.
2160
# from https://bugs.launchpad.net/bzr/+bug/251352
2162
re_obj = re.compile(re_string, flags)
2167
where = ' in ' + where
2168
# despite the name 'error' is a type
2169
raise errors.BzrCommandError('Invalid regular expression%s: %r: %s'
2170
% (where, re_string, e))
2173
2358
if sys.platform == "win32":
2176
2361
return msvcrt.getch()
2181
2366
fd = sys.stdin.fileno()
2182
2367
settings = termios.tcgetattr(fd)
2187
2372
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2375
if sys.platform.startswith('linux'):
2192
2376
def _local_concurrency():
2194
prefix = 'processor'
2195
for line in file('/proc/cpuinfo', 'rb'):
2196
if line.startswith(prefix):
2197
concurrency = int(line[line.find(':')+1:]) + 1
2378
return os.sysconf('SC_NPROCESSORS_ONLN')
2379
except (ValueError, OSError, AttributeError):
2199
2381
elif sys.platform == 'darwin':
2200
2382
def _local_concurrency():
2201
2383
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2384
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2385
elif "bsd" in sys.platform:
2204
2386
def _local_concurrency():
2205
2387
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2388
stdout=subprocess.PIPE).communicate()[0]
2207
2389
elif sys.platform == 'sunos5':
2208
2390
def _local_concurrency():
2209
return subprocess.Popen(['psrinfo', '-p',],
2391
return subprocess.Popen(['psrinfo', '-p', ],
2210
2392
stdout=subprocess.PIPE).communicate()[0]
2211
2393
elif sys.platform == "win32":
2212
2394
def _local_concurrency():
2302
2491
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2493
open_file = open
2496
def available_backup_name(base, exists):
2497
"""Find a non-existing backup file name.
2499
This will *not* create anything, this only return a 'free' entry. This
2500
should be used for checking names in a directory below a locked
2501
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2502
Leap) and generally discouraged.
2504
:param base: The base name.
2506
:param exists: A callable returning True if the path parameter exists.
2509
name = "%s.~%d~" % (base, counter)
2512
name = "%s.~%d~" % (base, counter)
2516
def set_fd_cloexec(fd):
2517
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2518
support for this is not available.
2522
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2523
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2524
except (ImportError, AttributeError):
2525
# Either the fcntl module or specific constants are not present
2529
def find_executable_on_path(name):
2530
"""Finds an executable on the PATH.
2532
On Windows, this will try to append each extension in the PATHEXT
2533
environment variable to the name, if it cannot be found with the name
2536
:param name: The base name of the executable.
2537
:return: The path to the executable found or None.
2539
if sys.platform == 'win32':
2540
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2541
exts = [ext.lower() for ext in exts]
2542
base, ext = os.path.splitext(name)
2544
if ext.lower() not in exts:
2550
path = os.environ.get('PATH')
2551
if path is not None:
2552
path = path.split(os.pathsep)
2555
f = os.path.join(d, name) + ext
2556
if os.access(f, os.X_OK):
2558
if sys.platform == 'win32':
2559
app_path = win32utils.get_app_path(name)
2560
if app_path != name:
2565
def _posix_is_local_pid_dead(pid):
2566
"""True if pid doesn't correspond to live process on this machine"""
2568
# Special meaning of unix kill: just check if it's there.
2570
except OSError as e:
2571
if e.errno == errno.ESRCH:
2572
# On this machine, and really not found: as sure as we can be
2575
elif e.errno == errno.EPERM:
2576
# exists, though not ours
2579
trace.mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2580
# Don't really know.
2583
# Exists and our process: not dead.
2587
if sys.platform == "win32":
2588
is_local_pid_dead = win32utils.is_local_pid_dead
2590
is_local_pid_dead = _posix_is_local_pid_dead
2592
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2593
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2594
if getattr(errno, name, None) is not None]
2597
def fdatasync(fileno):
2598
"""Flush file contents to disk if possible.
2600
:param fileno: Integer OS file handle.
2601
:raises TransportNotPossible: If flushing to disk is not possible.
2603
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2607
except IOError as e:
2608
# See bug #1075108, on some platforms fdatasync exists, but can
2609
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2610
# and reduce the chance of corruption-on-powerloss situations. It
2611
# is not a mandatory call, so it is ok to suppress failures.
2612
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2613
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2617
def ensure_empty_directory_exists(path, exception_class):
2618
"""Make sure a local directory exists and is empty.
2620
If it does not exist, it is created. If it exists and is not empty, an
2621
instance of exception_class is raised.
2625
except OSError as e:
2626
if e.errno != errno.EEXIST:
2628
if os.listdir(path) != []:
2629
raise exception_class(path)
2632
def is_environment_error(evalue):
2633
"""True if exception instance is due to a process environment issue
2635
This includes OSError and IOError, but also other errors that come from
2636
the operating system or core libraries but are not subclasses of those.
2638
if isinstance(evalue, (EnvironmentError, select.error)):
2640
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):
2645
def read_mtab(path):
2646
"""Read an fstab-style file and extract mountpoint+filesystem information.
2648
:param path: Path to read from
2649
:yield: Tuples with mountpoints (as bytestrings) and filesystem names
2651
with open(path, 'rb') as f:
2653
if line.startswith(b'#'):
2658
yield cols[1], cols[2].decode('ascii', 'replace')
2661
MTAB_PATH = '/etc/mtab'
2663
class FilesystemFinder(object):
2664
"""Find the filesystem for a particular path."""
2666
def __init__(self, mountpoints):
2669
self._mountpoints = sorted(mountpoints, key=key, reverse=True)
2673
"""Create a FilesystemFinder from an mtab-style file.
2675
Note that this will silenty ignore mtab if it doesn't exist or can not
2678
# TODO(jelmer): Use inotify to be notified when /etc/mtab changes and
2679
# we need to re-read it.
2681
return cls(read_mtab(MTAB_PATH))
2682
except EnvironmentError as e:
2683
trace.mutter('Unable to read mtab: %s', e)
2686
def find(self, path):
2687
"""Find the filesystem used by a particular path.
2689
:param path: Path to find (bytestring or text type)
2690
:return: Filesystem name (as text type) or None, if the filesystem is
2693
for mountpoint, filesystem in self._mountpoints:
2694
if is_inside(mountpoint, path):
2699
_FILESYSTEM_FINDER = None
2702
def get_fs_type(path):
2703
"""Return the filesystem type for the partition a path is in.
2705
:param path: Path to search filesystem type for
2706
:return: A FS type, as string. E.g. "ext2"
2708
global _FILESYSTEM_FINDER
2709
if _FILESYSTEM_FINDER is None:
2710
_FILESYSTEM_FINDER = FilesystemFinder.from_mtab()
2712
if not isinstance(path, bytes):
2713
path = path.encode(_fs_enc)
2715
return _FILESYSTEM_FINDER.find(path)
2719
perf_counter = time.perf_counter
2721
perf_counter = time.clock
added
removed
breezy/osutils.py
