14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
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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from datetime import timedelta
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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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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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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,) as e:
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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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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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and old.lower() == new.lower()):
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# source and target are the same file on a case-insensitive
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# filesystem, so we don't generate an exception
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# This may throw an exception, in which case success will
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rename_func(old, new)
281
except (IOError, OSError) as e:
282
# 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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if (file_existed and e.errno in (None, errno.ENOENT)
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and old.lower() == new.lower()):
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# source and target are the same file on a case-insensitive
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# filesystem, so we don't generate an exception
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# If the file used to exist, rename it back into place
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unlink_func(tmp_name)
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rename_func(tmp_name, new)
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if failure_exc is not None:
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raise failure_exc[0], failure_exc[1], failure_exc[2]
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# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
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# choke on a Unicode string containing a relative path if
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# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
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_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
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if not posixpath.isabs(path):
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path = posixpath.join(getcwd(), path)
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return posixpath.normpath(path)
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return _posix_normpath(path)
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def _posix_realpath(path):
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return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
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def _posix_normpath(path):
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path = posixpath.normpath(path)
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# Bug 861008: posixpath.normpath() returns a path normalized according to
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# the POSIX standard, which stipulates (for compatibility reasons) that two
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# leading slashes must not be simplified to one, and only if there are 3 or
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# more should they be simplified as one. So we treat the leading 2 slashes
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# as a special case here by simply removing the first slash, as we consider
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# that breaking POSIX compatibility for this obscure feature is acceptable.
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# This is not a paranoid precaution, as we notably get paths like this when
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# the repo is hosted at the root of the filesystem, i.e. in "/".
328
if path.startswith('//'):
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def _posix_path_from_environ(key):
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"""Get unicode path from `key` in environment or None if not present
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Note that posix systems use arbitrary byte strings for filesystem objects,
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so a path that raises BadFilenameEncoding here may still be accessible.
339
val = os.environ.get(key, None)
340
if PY3 or val is None:
343
return val.decode(_fs_enc)
344
except UnicodeDecodeError:
345
# GZ 2011-12-12:Ideally want to include `key` in the exception message
346
raise errors.BadFilenameEncoding(val, _fs_enc)
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def _posix_get_home_dir():
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"""Get the home directory of the current user as a unicode path"""
351
path = posixpath.expanduser("~")
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return path.decode(_fs_enc)
354
except AttributeError:
356
except UnicodeDecodeError:
357
raise errors.BadFilenameEncoding(path, _fs_enc)
360
def _posix_getuser_unicode():
361
"""Get username from environment or password database as unicode"""
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name = getpass.getuser()
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user_encoding = get_user_encoding()
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return name.decode(user_encoding)
368
except UnicodeDecodeError:
369
raise errors.BzrError("Encoding of username %r is unsupported by %s "
370
"application locale." % (name, user_encoding))
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def _win32_fixdrive(path):
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"""Force drive letters to be consistent.
303
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running python.exe under cmd.exe return capital C:\\
304
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running win32 python inside a cygwin shell returns lowercase c:\\
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drive, path = _nt_splitdrive(path)
382
drive, path = ntpath.splitdrive(path)
307
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return drive.upper() + path
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386
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]
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if drive == '' and path[:2] not in('//','\\\\'):
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# 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 ('/','\\'):
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cwd = _nt_splitdrive(cwd)[0]
338
path = cwd + '\\' + path
339
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
387
# Real ntpath.abspath doesn't have a problem with a unicode cwd
388
return _win32_fixdrive(ntpath.abspath(unicode(path)).replace('\\', '/'))
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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('\\', '/'))
392
# Real ntpath.realpath doesn't have a problem with a unicode cwd
393
return _win32_fixdrive(ntpath.realpath(unicode(path)).replace('\\', '/'))
347
396
def _win32_pathjoin(*args):
348
return _nt_join(*args).replace('\\', '/')
397
return ntpath.join(*args).replace('\\', '/')
351
400
def _win32_normpath(path):
352
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
401
return _win32_fixdrive(ntpath.normpath(unicode(path)).replace('\\', '/'))
355
404
def _win32_getcwd():
356
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
405
return _win32_fixdrive(_getcwd().replace('\\', '/'))
359
408
def _win32_mkdtemp(*args, **kwargs):
360
409
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
412
def _win32_rename(old, new):
372
413
"""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
430
def _mac_getcwd():
400
return unicodedata.normalize('NFC', os.getcwdu())
431
return unicodedata.normalize('NFC', _getcwd())
434
def _rename_wrap_exception(rename_func):
435
"""Adds extra information to any exceptions that come from rename().
437
The exception has an updated message and 'old_filename' and 'new_filename'
441
def _rename_wrapper(old, new):
443
rename_func(old, new)
445
detailed_error = OSError(e.errno, e.strerror +
446
" [occurred when renaming '%s' to '%s']" %
448
detailed_error.old_filename = old
449
detailed_error.new_filename = new
452
return _rename_wrapper
455
if sys.version_info > (3,):
461
# Default rename wraps os.rename()
462
rename = _rename_wrap_exception(os.rename)
403
464
# Default is to just use the python builtins, but these can be rebound on
404
465
# particular platforms.
405
466
abspath = _posix_abspath
406
467
realpath = _posix_realpath
407
468
pathjoin = os.path.join
408
normpath = os.path.normpath
409
rename = _wrapped_rename # overridden below on win32
469
normpath = _posix_normpath
470
path_from_environ = _posix_path_from_environ
471
_get_home_dir = _posix_get_home_dir
472
getuser_unicode = _posix_getuser_unicode
411
474
dirname = os.path.dirname
412
475
basename = os.path.basename
413
476
split = os.path.split
414
477
splitext = os.path.splitext
415
# These were already imported into local scope
478
# These were already lazily imported into local scope
416
479
# mkdtemp = tempfile.mkdtemp
417
480
# rmtree = shutil.rmtree
419
488
MIN_ABS_PATHLENGTH = 1
422
491
if sys.platform == 'win32':
423
if win32utils.winver == 'Windows 98':
424
abspath = _win98_abspath
426
abspath = _win32_abspath
492
abspath = _win32_abspath
427
493
realpath = _win32_realpath
428
494
pathjoin = _win32_pathjoin
429
495
normpath = _win32_normpath
430
496
getcwd = _win32_getcwd
431
497
mkdtemp = _win32_mkdtemp
432
rename = _win32_rename
498
rename = _rename_wrap_exception(_win32_rename)
500
from . import _walkdirs_win32
504
lstat = _walkdirs_win32.lstat
505
fstat = _walkdirs_win32.fstat
506
wrap_stat = _walkdirs_win32.wrap_stat
434
508
MIN_ABS_PATHLENGTH = 3
471
548
On my standard US Windows XP, the preferred encoding is
472
549
cp1252, but the console is cp437
551
:param trace: If True trace the selected encoding via mutter().
474
from bzrlib.trace import mutter
553
from .trace import mutter
475
554
output_encoding = getattr(sys.stdout, 'encoding', None)
476
555
if not output_encoding:
477
556
input_encoding = getattr(sys.stdin, 'encoding', None)
478
557
if not input_encoding:
479
558
output_encoding = get_user_encoding()
480
mutter('encoding stdout as osutils.get_user_encoding() %r',
560
mutter('encoding stdout as osutils.get_user_encoding() %r',
483
563
output_encoding = input_encoding
484
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
565
mutter('encoding stdout as sys.stdin encoding %r',
486
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
569
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
487
570
if output_encoding == 'cp0':
488
571
# invalid encoding (cp0 means 'no codepage' on Windows)
489
572
output_encoding = get_user_encoding()
490
mutter('cp0 is invalid encoding.'
574
mutter('cp0 is invalid encoding.'
491
575
' encoding stdout as osutils.get_user_encoding() %r',
495
579
codecs.lookup(output_encoding)
496
580
except LookupError:
497
sys.stderr.write('bzr: warning:'
581
sys.stderr.write('brz: warning:'
498
582
' unknown terminal encoding %s.\n'
499
583
' Using encoding %s instead.\n'
500
584
% (output_encoding, get_user_encoding())
798
904
(date_fmt, tt, offset_str) = \
799
905
_format_date(t, offset, timezone, date_fmt, show_offset)
800
906
date_str = time.strftime(date_fmt, tt)
801
if not isinstance(date_str, unicode):
907
if not isinstance(date_str, text_type):
802
908
date_str = date_str.decode(get_user_encoding(), 'replace')
803
909
return date_str + offset_str
806
912
def _format_date(t, offset, timezone, date_fmt, show_offset):
807
913
if timezone == 'utc':
810
916
elif timezone == 'original':
811
917
if offset is None:
813
tt = time.gmtime(t + offset)
919
tt = gmtime(t + offset)
814
920
elif timezone == 'local':
815
921
tt = time.localtime(t)
816
922
offset = local_time_offset(t)
818
raise errors.UnsupportedTimezoneFormat(timezone)
924
raise UnsupportedTimezoneFormat(timezone)
819
925
if date_fmt is None:
820
926
date_fmt = "%a %Y-%m-%d %H:%M:%S"
882
988
"""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
989
return os.fstat(f.fileno())[stat.ST_SIZE]
992
# Alias os.urandom to support platforms (which?) without /dev/urandom and
993
# override if it doesn't work. Avoid checking on windows where there is
994
# significant initialisation cost that can be avoided for some bzr calls.
996
rand_bytes = os.urandom
998
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):
1001
except NotImplementedError:
899
1002
# not well seeded, but better than nothing
900
1003
def rand_bytes(n):
970
1076
implementation should be loaded instead::
973
>>> import bzrlib._fictional_extension_pyx
1079
>>> import breezy._fictional_extension_pyx
974
1080
>>> except ImportError, e:
975
>>> bzrlib.osutils.failed_to_load_extension(e)
976
>>> import bzrlib._fictional_extension_py
1081
>>> breezy.osutils.failed_to_load_extension(e)
1082
>>> import breezy._fictional_extension_py
978
1084
# NB: This docstring is just an example, not a doctest, because doctest
979
1085
# currently can't cope with the use of lazy imports in this namespace --
982
1088
# This currently doesn't report the failure at the time it occurs, because
983
1089
# they tend to happen very early in startup when we can't check config
984
1090
# files etc, and also we want to report all failures but not spam the user
985
1091
# with 10 warnings.
986
from bzrlib import trace
987
1092
exception_str = str(exception)
988
1093
if exception_str not in _extension_load_failures:
989
1094
trace.mutter("failed to load compiled extension: %s" % exception_str)
993
1098
def report_extension_load_failures():
994
1099
if not _extension_load_failures:
996
from bzrlib.config import GlobalConfig
997
if GlobalConfig().get_user_option_as_bool('ignore_missing_extensions'):
1101
if config.GlobalConfig().suppress_warning('missing_extensions'):
999
1103
# the warnings framework should by default show this only once
1000
from bzrlib.trace import warning
1104
from .trace import warning
1002
"bzr: warning: some compiled extensions could not be loaded; "
1003
"see <https://answers.launchpad.net/bzr/+faq/703>")
1106
"brz: warning: some compiled extensions could not be loaded; "
1107
"see ``brz help missing-extensions``")
1004
1108
# we no longer show the specific missing extensions here, because it makes
1005
1109
# the message too long and scary - see
1006
1110
# https://bugs.launchpad.net/bzr/+bug/430529
1010
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
1011
except ImportError, e:
1114
from ._chunks_to_lines_pyx import chunks_to_lines
1115
except ImportError as e:
1012
1116
failed_to_load_extension(e)
1013
from bzrlib._chunks_to_lines_py import chunks_to_lines
1117
from ._chunks_to_lines_py import chunks_to_lines
1016
1120
def split_lines(s):
1049
1154
os.link(src, dest)
1050
except (OSError, IOError), e:
1155
except (OSError, IOError) as e:
1051
1156
if e.errno != errno.EXDEV:
1053
1158
shutil.copyfile(src, dest)
1056
1161
def delete_any(path):
1057
"""Delete a file, symlink or directory.
1162
"""Delete a file, symlink or directory.
1059
1164
Will delete even if readonly.
1062
1167
_delete_file_or_dir(path)
1063
except (OSError, IOError), e:
1168
except (OSError, IOError) as e:
1064
1169
if e.errno in (errno.EPERM, errno.EACCES):
1065
1170
# make writable and try again
1250
1355
# but for now, we haven't optimized...
1251
1356
return [canonical_relpath(base, p) for p in paths]
1359
def decode_filename(filename):
1360
"""Decode the filename using the filesystem encoding
1362
If it is unicode, it is returned.
1363
Otherwise it is decoded from the the filesystem's encoding. If decoding
1364
fails, a errors.BadFilenameEncoding exception is raised.
1366
if isinstance(filename, text_type):
1369
return filename.decode(_fs_enc)
1370
except UnicodeDecodeError:
1371
raise errors.BadFilenameEncoding(filename, _fs_enc)
1253
1374
def safe_unicode(unicode_or_utf8_string):
1254
1375
"""Coerce unicode_or_utf8_string into unicode.
1284
1405
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):
1408
def safe_revision_id(unicode_or_utf8_string):
1293
1409
"""Revision ids should now be utf8, but at one point they were unicode.
1295
1411
: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
1413
:return: None or a utf8 revision id.
1300
1415
if (unicode_or_utf8_string is None
1301
or unicode_or_utf8_string.__class__ == str):
1416
or unicode_or_utf8_string.__class__ == bytes):
1302
1417
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):
1418
raise TypeError('Unicode revision ids are no longer supported. '
1419
'Revision id generators should be creating utf8 revision '
1423
def safe_file_id(unicode_or_utf8_string):
1314
1424
"""File ids should now be utf8, but at one point they were unicode.
1316
1426
This is the same as safe_utf8, except it uses the cached encode functions
1424
1537
None is returned if the width can't established precisely.
1427
- if BZR_COLUMNS is set, returns its value
1540
- if BRZ_COLUMNS is set, returns its value
1428
1541
- if there is no controlling terminal, returns None
1542
- query the OS, if the queried size has changed since the last query,
1429
1544
- if COLUMNS is set, returns its value,
1545
- if the OS has a value (even though it's never changed), return its value.
1431
1547
From there, we need to query the OS to get the size of the controlling
1550
On Unices we query the OS by:
1435
1551
- get termios.TIOCGWINSZ
1436
1552
- if an error occurs or a negative value is obtained, returns None
1554
On Windows we query the OS by:
1440
1555
- win32utils.get_console_size() decides,
1441
1556
- returns None on error (provided default value)
1558
# Note to implementors: if changing the rules for determining the width,
1559
# make sure you've considered the behaviour in these cases:
1560
# - M-x shell in emacs, where $COLUMNS is set and TIOCGWINSZ returns 0,0.
1561
# - brz log | less, in bash, where $COLUMNS not set and TIOCGWINSZ returns
1563
# - (add more interesting cases here, if you find any)
1564
# Some programs implement "Use $COLUMNS (if set) until SIGWINCH occurs",
1565
# but we don't want to register a signal handler because it is impossible
1566
# to do so without risking EINTR errors in Python <= 2.6.5 (see
1567
# <http://bugs.python.org/issue8354>). Instead we check TIOCGWINSZ every
1568
# 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
1571
# If BRZ_COLUMNS is set, take it, user is always right
1572
# Except if they specified 0 in which case, impose no limit here
1446
return int(os.environ['BZR_COLUMNS'])
1574
width = int(os.environ['BRZ_COLUMNS'])
1447
1575
except (KeyError, ValueError):
1577
if width is not None:
1450
1583
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.
1584
if isatty is None or not isatty():
1585
# 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))
1589
width, height = os_size = _terminal_size(None, None)
1590
global _first_terminal_size, _terminal_size_state
1591
if _terminal_size_state == 'no_data':
1592
_first_terminal_size = os_size
1593
_terminal_size_state = 'unchanged'
1594
elif (_terminal_size_state == 'unchanged' and
1595
_first_terminal_size != os_size):
1596
_terminal_size_state = 'changed'
1598
# If the OS claims to know how wide the terminal is, and this value has
1599
# ever changed, use that.
1600
if _terminal_size_state == 'changed':
1601
if width is not None and width > 0:
1604
# If COLUMNS is set, use it.
1459
1606
return int(os.environ['COLUMNS'])
1460
1607
except (KeyError, ValueError):
1463
width, height = _terminal_size(None, None)
1465
# Consider invalid values as meaning no width
1610
# Finally, use an unchanged size from the OS, if we have one.
1611
if _terminal_size_state == 'unchanged':
1612
if width is not None and width > 0:
1615
# The width could not be determined.
1471
1619
def _win32_terminal_size(width, height):
1498
1646
_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
1649
def supports_executable():
1527
1650
return sys.platform != "win32"
1712
1835
global _selected_dir_reader
1713
1836
if _selected_dir_reader is None:
1714
fs_encoding = _fs_enc.upper()
1715
if sys.platform == "win32" and win32utils.winver == 'Windows NT':
1716
# Win98 doesn't have unicode apis like FindFirstFileW
1717
# TODO: We possibly could support Win98 by falling back to the
1718
# original FindFirstFile, and using TCHAR instead of WCHAR,
1719
# but that gets a bit tricky, and requires custom compiling
1837
if sys.platform == "win32":
1722
from bzrlib._walkdirs_win32 import Win32ReadDir
1839
from ._walkdirs_win32 import Win32ReadDir
1723
1840
_selected_dir_reader = Win32ReadDir()
1724
1841
except ImportError:
1726
elif fs_encoding in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1727
# ANSI_X3.4-1968 is a form of ASCII
1843
elif _fs_enc in ('utf-8', 'ascii'):
1729
from bzrlib._readdir_pyx import UTF8DirReader
1845
from ._readdir_pyx import UTF8DirReader
1730
1846
_selected_dir_reader = UTF8DirReader()
1731
except ImportError, e:
1847
except ImportError as e:
1732
1848
failed_to_load_extension(e)
1886
2005
_cached_user_encoding = None
1889
def get_user_encoding(use_cache=True):
2008
def get_user_encoding():
1890
2009
"""Find out what the preferred user encoding is.
1892
2011
This is generally the encoding that is used for command line parameters
1893
2012
and file contents. This may be different from the terminal encoding
1894
2013
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
2015
:return: A string defining the preferred user encoding
1902
2017
global _cached_user_encoding
1903
if _cached_user_encoding is not None and use_cache:
2018
if _cached_user_encoding is not None:
1904
2019
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'
2021
if os.name == 'posix' and getattr(locale, 'CODESET', None) is not None:
2022
# Use the existing locale settings and call nl_langinfo directly
2023
# rather than going through getpreferredencoding. This avoids
2024
# <http://bugs.python.org/issue6202> on OSX Python 2.6 and the
2025
# possibility of the setlocale call throwing an error.
2026
user_encoding = locale.nl_langinfo(locale.CODESET)
2028
# GZ 2011-12-19: On windows could call GetACP directly instead.
2029
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:'
2032
user_encoding = codecs.lookup(user_encoding).name
2034
if user_encoding not in ("", "cp0"):
2035
sys.stderr.write('brz: warning:'
1950
2036
' unknown encoding %s.'
1951
2037
' Continuing with ascii encoding.\n'
1952
2038
% user_encoding
1954
user_encoding = 'ascii'
1957
_cached_user_encoding = user_encoding
2040
user_encoding = 'ascii'
2042
# Get 'ascii' when setlocale has not been called or LANG=C or unset.
2043
if user_encoding == 'ascii':
2044
if sys.platform == 'darwin':
2045
# OSX is special-cased in Python to have a UTF-8 filesystem
2046
# encoding and previously had LANG set here if not present.
2047
user_encoding = 'utf-8'
2048
# GZ 2011-12-19: Maybe UTF-8 should be the default in this case
2049
# for some other posix platforms as well.
2051
_cached_user_encoding = user_encoding
1959
2052
return user_encoding
2055
def get_diff_header_encoding():
2056
return get_terminal_encoding()
1962
2059
def get_host_name():
1963
2060
"""Return the current unicode host name.
2028
2134
def send_all(sock, bytes, report_activity=None):
2029
2135
"""Send all bytes on a socket.
2031
2137
Breaks large blocks in smaller chunks to avoid buffering limitations on
2032
2138
some platforms, and catches EINTR which may be thrown if the send is
2033
2139
interrupted by a signal.
2035
2141
This is preferred to socket.sendall(), because it avoids portability bugs
2036
2142
and provides activity reporting.
2038
2144
:param report_activity: Call this as bytes are read, see
2039
2145
Transport._report_activity
2042
2148
byte_count = len(bytes)
2149
view = memoryview(bytes)
2043
2150
while sent_total < byte_count:
2045
sent = sock.send(buffer(bytes, sent_total, MAX_SOCKET_CHUNK))
2046
except socket.error, e:
2152
sent = sock.send(view[sent_total:sent_total+MAX_SOCKET_CHUNK])
2153
except (socket.error, IOError) as e:
2154
if e.args[0] in _end_of_stream_errors:
2155
raise errors.ConnectionReset(
2156
"Error trying to write to socket", e)
2047
2157
if e.args[0] != errno.EINTR:
2161
raise errors.ConnectionReset('Sending to %s returned 0 bytes'
2050
2163
sent_total += sent
2051
report_activity(sent, 'write')
2164
if report_activity is not None:
2165
report_activity(sent, 'write')
2168
def connect_socket(address):
2169
# Slight variation of the socket.create_connection() function (provided by
2170
# python-2.6) that can fail if getaddrinfo returns an empty list. We also
2171
# provide it for previous python versions. Also, we don't use the timeout
2172
# parameter (provided by the python implementation) so we don't implement
2174
err = socket.error('getaddrinfo returns an empty list')
2175
host, port = address
2176
for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
2177
af, socktype, proto, canonname, sa = res
2180
sock = socket.socket(af, socktype, proto)
2184
except socket.error as err:
2185
# 'err' is now the most recent error
2186
if sock is not None:
2054
2191
def dereference_path(path):
2082
2219
If and when pkg_resources becomes a standard library, this routine
2083
2220
can delegate to it.
2085
# Check package name is within bzrlib
2086
if package == "bzrlib":
2222
# Check package name is within breezy
2223
if package == "breezy":
2087
2224
resource_relpath = resource_name
2088
elif package.startswith("bzrlib."):
2089
package = package[len("bzrlib."):].replace('.', os.sep)
2225
elif package.startswith("breezy."):
2226
package = package[len("breezy."):].replace('.', os.sep)
2090
2227
resource_relpath = pathjoin(package, resource_name)
2092
raise errors.BzrError('resource package %s not in bzrlib' % package)
2229
raise errors.BzrError('resource package %s not in breezy' % package)
2094
2231
# Map the resource to a file and read its contents
2095
base = dirname(bzrlib.__file__)
2232
base = dirname(breezy.__file__)
2096
2233
if getattr(sys, 'frozen', None): # bzr.exe
2097
2234
base = abspath(pathjoin(base, '..', '..'))
2098
filename = pathjoin(base, resource_relpath)
2099
return open(filename, 'rU').read()
2235
f = file(pathjoin(base, resource_relpath), "rU")
2102
2241
def file_kind_from_stat_mode_thunk(mode):
2103
2242
global file_kind_from_stat_mode
2104
2243
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
2106
from bzrlib._readdir_pyx import UTF8DirReader
2245
from ._readdir_pyx import UTF8DirReader
2107
2246
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
2108
except ImportError, e:
2247
except ImportError as e:
2109
2248
# This is one time where we won't warn that an extension failed to
2110
2249
# load. The extension is never available on Windows anyway.
2111
from bzrlib._readdir_py import (
2250
from ._readdir_py import (
2112
2251
_kind_from_mode as file_kind_from_stat_mode
2114
2253
return file_kind_from_stat_mode(mode)
2115
2254
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
2118
def file_kind(f, _lstat=os.lstat):
2256
def file_stat(f, _lstat=os.lstat):
2120
return file_kind_from_stat_mode(_lstat(f).st_mode)
2260
except OSError as e:
2122
2261
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
2123
2262
raise errors.NoSuchFile(f)
2265
def file_kind(f, _lstat=os.lstat):
2266
stat_value = file_stat(f, _lstat)
2267
return file_kind_from_stat_mode(stat_value.st_mode)
2127
2269
def until_no_eintr(f, *a, **kw):
2128
2270
"""Run f(*a, **kw), retrying if an EINTR error occurs.
2130
2272
WARNING: you must be certain that it is safe to retry the call repeatedly
2131
2273
if EINTR does occur. This is typically only true for low-level operations
2132
2274
like os.read. If in any doubt, don't use this.
2134
2276
Keep in mind that this is not a complete solution to EINTR. There is
2135
2277
probably code in the Python standard library and other dependencies that
2136
2278
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
2279
that signal). So this function can reduce the impact for IO that breezy
2138
2280
directly controls, but it is not a complete solution.
2140
2282
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
2143
2285
return f(*a, **kw)
2144
except (IOError, OSError), e:
2286
except (IOError, OSError) as e:
2145
2287
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
2292
if sys.platform == "win32":
2176
2295
return msvcrt.getch()
2181
2300
fd = sys.stdin.fileno()
2182
2301
settings = termios.tcgetattr(fd)
2187
2306
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
2191
if sys.platform == 'linux2':
2309
if sys.platform.startswith('linux'):
2192
2310
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
2312
return os.sysconf('SC_NPROCESSORS_ONLN')
2313
except (ValueError, OSError, AttributeError):
2199
2315
elif sys.platform == 'darwin':
2200
2316
def _local_concurrency():
2201
2317
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
2202
2318
stdout=subprocess.PIPE).communicate()[0]
2203
elif sys.platform[0:7] == 'freebsd':
2319
elif "bsd" in sys.platform:
2204
2320
def _local_concurrency():
2205
2321
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
2206
2322
stdout=subprocess.PIPE).communicate()[0]
2302
2423
return os.fdopen(os.open(filename, flags), mode, bufsize)
2304
2425
open_file = open
2428
def available_backup_name(base, exists):
2429
"""Find a non-existing backup file name.
2431
This will *not* create anything, this only return a 'free' entry. This
2432
should be used for checking names in a directory below a locked
2433
tree/branch/repo to avoid race conditions. This is LBYL (Look Before You
2434
Leap) and generally discouraged.
2436
:param base: The base name.
2438
:param exists: A callable returning True if the path parameter exists.
2441
name = "%s.~%d~" % (base, counter)
2444
name = "%s.~%d~" % (base, counter)
2448
def set_fd_cloexec(fd):
2449
"""Set a Unix file descriptor's FD_CLOEXEC flag. Do nothing if platform
2450
support for this is not available.
2454
old = fcntl.fcntl(fd, fcntl.F_GETFD)
2455
fcntl.fcntl(fd, fcntl.F_SETFD, old | fcntl.FD_CLOEXEC)
2456
except (ImportError, AttributeError):
2457
# Either the fcntl module or specific constants are not present
2461
def find_executable_on_path(name):
2462
"""Finds an executable on the PATH.
2464
On Windows, this will try to append each extension in the PATHEXT
2465
environment variable to the name, if it cannot be found with the name
2468
:param name: The base name of the executable.
2469
:return: The path to the executable found or None.
2471
if sys.platform == 'win32':
2472
exts = os.environ.get('PATHEXT', '').split(os.pathsep)
2473
exts = [ext.lower() for ext in exts]
2474
base, ext = os.path.splitext(name)
2476
if ext.lower() not in exts:
2482
path = os.environ.get('PATH')
2483
if path is not None:
2484
path = path.split(os.pathsep)
2487
f = os.path.join(d, name) + ext
2488
if os.access(f, os.X_OK):
2490
if sys.platform == 'win32':
2491
app_path = win32utils.get_app_path(name)
2492
if app_path != name:
2497
def _posix_is_local_pid_dead(pid):
2498
"""True if pid doesn't correspond to live process on this machine"""
2500
# Special meaning of unix kill: just check if it's there.
2502
except OSError as e:
2503
if e.errno == errno.ESRCH:
2504
# On this machine, and really not found: as sure as we can be
2507
elif e.errno == errno.EPERM:
2508
# exists, though not ours
2511
mutter("os.kill(%d, 0) failed: %s" % (pid, e))
2512
# Don't really know.
2515
# Exists and our process: not dead.
2518
if sys.platform == "win32":
2519
is_local_pid_dead = win32utils.is_local_pid_dead
2521
is_local_pid_dead = _posix_is_local_pid_dead
2523
_maybe_ignored = ['EAGAIN', 'EINTR', 'ENOTSUP', 'EOPNOTSUPP', 'EACCES']
2524
_fdatasync_ignored = [getattr(errno, name) for name in _maybe_ignored
2525
if getattr(errno, name, None) is not None]
2528
def fdatasync(fileno):
2529
"""Flush file contents to disk if possible.
2531
:param fileno: Integer OS file handle.
2532
:raises TransportNotPossible: If flushing to disk is not possible.
2534
fn = getattr(os, 'fdatasync', getattr(os, 'fsync', None))
2538
except IOError as e:
2539
# See bug #1075108, on some platforms fdatasync exists, but can
2540
# raise ENOTSUP. However, we are calling fdatasync to be helpful
2541
# and reduce the chance of corruption-on-powerloss situations. It
2542
# is not a mandatory call, so it is ok to suppress failures.
2543
trace.mutter("ignoring error calling fdatasync: %s" % (e,))
2544
if getattr(e, 'errno', None) not in _fdatasync_ignored:
2548
def ensure_empty_directory_exists(path, exception_class):
2549
"""Make sure a local directory exists and is empty.
2551
If it does not exist, it is created. If it exists and is not empty, an
2552
instance of exception_class is raised.
2556
except OSError as e:
2557
if e.errno != errno.EEXIST:
2559
if os.listdir(path) != []:
2560
raise exception_class(path)
2563
def is_environment_error(evalue):
2564
"""True if exception instance is due to a process environment issue
2566
This includes OSError and IOError, but also other errors that come from
2567
the operating system or core libraries but are not subclasses of those.
2569
if isinstance(evalue, (EnvironmentError, select.error)):
2571
if sys.platform == "win32" and win32utils._is_pywintypes_error(evalue):