60
mode = os.lstat(f)[ST_MODE]
68
raise BzrError("can't handle file kind with mode %o of %r" % (mode, f))
131
_directory_kind = 'directory'
134
"""Return the current umask"""
135
# Assume that people aren't messing with the umask while running
136
# XXX: This is not thread safe, but there is no way to get the
137
# umask without setting it
145
_directory_kind: "/",
147
'tree-reference': '+',
71
151
def kind_marker(kind):
74
elif kind == 'directory':
76
elif kind == 'symlink':
79
raise BzrError('invalid file kind %r' % kind)
84
"""Copy a file to a backup.
86
Backups are named in GNU-style, with a ~ suffix.
88
If the file is already a backup, it's not copied.
153
return _kind_marker_map[kind]
155
raise errors.BzrError('invalid file kind %r' % kind)
158
lexists = getattr(os.path, 'lexists', None)
162
stat = getattr(os, 'lstat', os.stat)
166
if e.errno == errno.ENOENT:
169
raise errors.BzrError("lstat/stat of (%r): %r" % (f, e))
172
def fancy_rename(old, new, rename_func, unlink_func):
173
"""A fancy rename, when you don't have atomic rename.
101
outf = file(bfn, 'wb')
107
def rename(path_from, path_to):
108
"""Basically the same as os.rename() just special for win32"""
109
if sys.platform == 'win32':
175
:param old: The old path, to rename from
176
:param new: The new path, to rename to
177
:param rename_func: The potentially non-atomic rename function
178
:param unlink_func: A way to delete the target file if the full rename succeeds
181
# sftp rename doesn't allow overwriting, so play tricks:
182
base = os.path.basename(new)
183
dirname = os.path.dirname(new)
184
tmp_name = u'tmp.%s.%.9f.%d.%s' % (base, time.time(), os.getpid(), rand_chars(10))
185
tmp_name = pathjoin(dirname, tmp_name)
187
# Rename the file out of the way, but keep track if it didn't exist
188
# We don't want to grab just any exception
189
# something like EACCES should prevent us from continuing
190
# The downside is that the rename_func has to throw an exception
191
# with an errno = ENOENT, or NoSuchFile
194
rename_func(new, tmp_name)
195
except (errors.NoSuchFile,), e:
198
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
199
# function raises an IOError with errno is None when a rename fails.
200
# This then gets caught here.
201
if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
204
if (getattr(e, 'errno', None) is None
205
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
113
if e.errno != e.ENOENT:
213
# This may throw an exception, in which case success will
215
rename_func(old, new)
217
except (IOError, OSError), e:
218
# source and target may be aliases of each other (e.g. on a
219
# case-insensitive filesystem), so we may have accidentally renamed
220
# source by when we tried to rename target
221
if not (file_existed and e.errno in (None, errno.ENOENT)):
115
os.rename(path_from, path_to)
225
# If the file used to exist, rename it back into place
226
# otherwise just delete it from the tmp location
228
unlink_func(tmp_name)
230
rename_func(tmp_name, new)
233
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
234
# choke on a Unicode string containing a relative path if
235
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
237
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
238
def _posix_abspath(path):
239
# jam 20060426 rather than encoding to fsencoding
240
# copy posixpath.abspath, but use os.getcwdu instead
241
if not posixpath.isabs(path):
242
path = posixpath.join(getcwd(), path)
243
return posixpath.normpath(path)
246
def _posix_realpath(path):
247
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
250
def _win32_fixdrive(path):
251
"""Force drive letters to be consistent.
253
win32 is inconsistent whether it returns lower or upper case
254
and even if it was consistent the user might type the other
255
so we force it to uppercase
256
running python.exe under cmd.exe return capital C:\\
257
running win32 python inside a cygwin shell returns lowercase c:\\
259
drive, path = _nt_splitdrive(path)
260
return drive.upper() + path
263
def _win32_abspath(path):
264
# Real _nt_abspath doesn't have a problem with a unicode cwd
265
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
268
def _win98_abspath(path):
269
"""Return the absolute version of a path.
270
Windows 98 safe implementation (python reimplementation
271
of Win32 API function GetFullPathNameW)
276
# \\HOST\path => //HOST/path
277
# //HOST/path => //HOST/path
278
# path => C:/cwd/path
281
# check for absolute path
282
drive = _nt_splitdrive(path)[0]
283
if drive == '' and path[:2] not in('//','\\\\'):
285
# we cannot simply os.path.join cwd and path
286
# because os.path.join('C:','/path') produce '/path'
287
# and this is incorrect
288
if path[:1] in ('/','\\'):
289
cwd = _nt_splitdrive(cwd)[0]
291
path = cwd + '\\' + path
292
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
295
def _win32_realpath(path):
296
# Real _nt_realpath doesn't have a problem with a unicode cwd
297
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
300
def _win32_pathjoin(*args):
301
return _nt_join(*args).replace('\\', '/')
304
def _win32_normpath(path):
305
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
309
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
312
def _win32_mkdtemp(*args, **kwargs):
313
return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
316
def _win32_rename(old, new):
317
"""We expect to be able to atomically replace 'new' with old.
319
On win32, if new exists, it must be moved out of the way first,
323
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
325
if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
326
# If we try to rename a non-existant file onto cwd, we get
327
# EPERM or EACCES instead of ENOENT, this will raise ENOENT
328
# if the old path doesn't exist, sometimes we get EACCES
329
# On Linux, we seem to get EBUSY, on Mac we get EINVAL
335
return unicodedata.normalize('NFC', os.getcwdu())
338
# Default is to just use the python builtins, but these can be rebound on
339
# particular platforms.
340
abspath = _posix_abspath
341
realpath = _posix_realpath
342
pathjoin = os.path.join
343
normpath = os.path.normpath
346
dirname = os.path.dirname
347
basename = os.path.basename
348
split = os.path.split
349
splitext = os.path.splitext
350
# These were already imported into local scope
351
# mkdtemp = tempfile.mkdtemp
352
# rmtree = shutil.rmtree
354
MIN_ABS_PATHLENGTH = 1
357
if sys.platform == 'win32':
358
if win32utils.winver == 'Windows 98':
359
abspath = _win98_abspath
361
abspath = _win32_abspath
362
realpath = _win32_realpath
363
pathjoin = _win32_pathjoin
364
normpath = _win32_normpath
365
getcwd = _win32_getcwd
366
mkdtemp = _win32_mkdtemp
367
rename = _win32_rename
369
MIN_ABS_PATHLENGTH = 3
371
def _win32_delete_readonly(function, path, excinfo):
372
"""Error handler for shutil.rmtree function [for win32]
373
Helps to remove files and dirs marked as read-only.
375
exception = excinfo[1]
376
if function in (os.remove, os.rmdir) \
377
and isinstance(exception, OSError) \
378
and exception.errno == errno.EACCES:
384
def rmtree(path, ignore_errors=False, onerror=_win32_delete_readonly):
385
"""Replacer for shutil.rmtree: could remove readonly dirs/files"""
386
return shutil.rmtree(path, ignore_errors, onerror)
387
elif sys.platform == 'darwin':
391
def get_terminal_encoding():
392
"""Find the best encoding for printing to the screen.
394
This attempts to check both sys.stdout and sys.stdin to see
395
what encoding they are in, and if that fails it falls back to
396
osutils.get_user_encoding().
397
The problem is that on Windows, locale.getpreferredencoding()
398
is not the same encoding as that used by the console:
399
http://mail.python.org/pipermail/python-list/2003-May/162357.html
401
On my standard US Windows XP, the preferred encoding is
402
cp1252, but the console is cp437
404
from bzrlib.trace import mutter
405
output_encoding = getattr(sys.stdout, 'encoding', None)
406
if not output_encoding:
407
input_encoding = getattr(sys.stdin, 'encoding', None)
408
if not input_encoding:
409
output_encoding = get_user_encoding()
410
mutter('encoding stdout as osutils.get_user_encoding() %r',
413
output_encoding = input_encoding
414
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
416
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
417
if output_encoding == 'cp0':
418
# invalid encoding (cp0 means 'no codepage' on Windows)
419
output_encoding = get_user_encoding()
420
mutter('cp0 is invalid encoding.'
421
' encoding stdout as osutils.get_user_encoding() %r',
425
codecs.lookup(output_encoding)
427
sys.stderr.write('bzr: warning:'
428
' unknown terminal encoding %s.\n'
429
' Using encoding %s instead.\n'
430
% (output_encoding, get_user_encoding())
432
output_encoding = get_user_encoding()
434
return output_encoding
437
def normalizepath(f):
438
if getattr(os.path, 'realpath', None) is not None:
442
[p,e] = os.path.split(f)
443
if e == "" or e == "." or e == "..":
446
return pathjoin(F(p), e)
366
634
def local_time_offset(t=None):
367
635
"""Return offset of local zone from GMT, either at present or at time t."""
368
# python2.3 localtime() can't take None
372
if time.localtime(t).tm_isdst and time.daylight:
375
return -time.timezone
378
def format_date(t, offset=0, timezone='original'):
379
## TODO: Perhaps a global option to use either universal or local time?
380
## Or perhaps just let people set $TZ?
381
assert isinstance(t, float)
638
offset = datetime.fromtimestamp(t) - datetime.utcfromtimestamp(t)
639
return offset.days * 86400 + offset.seconds
641
weekdays = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
643
def format_date(t, offset=0, timezone='original', date_fmt=None,
645
"""Return a formatted date string.
647
:param t: Seconds since the epoch.
648
:param offset: Timezone offset in seconds east of utc.
649
:param timezone: How to display the time: 'utc', 'original' for the
650
timezone specified by offset, or 'local' for the process's current
652
:param date_fmt: strftime format.
653
:param show_offset: Whether to append the timezone.
655
(date_fmt, tt, offset_str) = \
656
_format_date(t, offset, timezone, date_fmt, show_offset)
657
date_fmt = date_fmt.replace('%a', weekdays[tt[6]])
658
date_str = time.strftime(date_fmt, tt)
659
return date_str + offset_str
661
def format_local_date(t, offset=0, timezone='original', date_fmt=None,
663
"""Return an unicode date string formatted according to the current locale.
665
:param t: Seconds since the epoch.
666
:param offset: Timezone offset in seconds east of utc.
667
:param timezone: How to display the time: 'utc', 'original' for the
668
timezone specified by offset, or 'local' for the process's current
670
:param date_fmt: strftime format.
671
:param show_offset: Whether to append the timezone.
673
(date_fmt, tt, offset_str) = \
674
_format_date(t, offset, timezone, date_fmt, show_offset)
675
date_str = time.strftime(date_fmt, tt)
676
if not isinstance(date_str, unicode):
677
date_str = date_str.decode(bzrlib.user_encoding, 'replace')
678
return date_str + offset_str
680
def _format_date(t, offset, timezone, date_fmt, show_offset):
383
681
if timezone == 'utc':
384
682
tt = time.gmtime(t)
386
684
elif timezone == 'original':
389
687
tt = time.gmtime(t + offset)
390
688
elif timezone == 'local':
391
689
tt = time.localtime(t)
392
690
offset = local_time_offset(t)
394
raise BzrError("unsupported timezone format %r" % timezone,
395
['options are "utc", "original", "local"'])
397
return (time.strftime("%a %Y-%m-%d %H:%M:%S", tt)
398
+ ' %+03d%02d' % (offset / 3600, (offset / 60) % 60))
692
raise errors.UnsupportedTimezoneFormat(timezone)
694
date_fmt = "%a %Y-%m-%d %H:%M:%S"
696
offset_str = ' %+03d%02d' % (offset / 3600, (offset / 60) % 60)
699
return (date_fmt, tt, offset_str)
401
702
def compact_date(when):
402
703
return time.strftime('%Y%m%d%H%M%S', time.gmtime(when))
706
def format_delta(delta):
707
"""Get a nice looking string for a time delta.
709
:param delta: The time difference in seconds, can be positive or negative.
710
positive indicates time in the past, negative indicates time in the
711
future. (usually time.time() - stored_time)
712
:return: String formatted to show approximate resolution
718
direction = 'in the future'
722
if seconds < 90: # print seconds up to 90 seconds
724
return '%d second %s' % (seconds, direction,)
726
return '%d seconds %s' % (seconds, direction)
728
minutes = int(seconds / 60)
729
seconds -= 60 * minutes
734
if minutes < 90: # print minutes, seconds up to 90 minutes
736
return '%d minute, %d second%s %s' % (
737
minutes, seconds, plural_seconds, direction)
739
return '%d minutes, %d second%s %s' % (
740
minutes, seconds, plural_seconds, direction)
742
hours = int(minutes / 60)
743
minutes -= 60 * hours
750
return '%d hour, %d minute%s %s' % (hours, minutes,
751
plural_minutes, direction)
752
return '%d hours, %d minute%s %s' % (hours, minutes,
753
plural_minutes, direction)
407
756
"""Return size of given open file."""
408
757
return os.fstat(f.fileno())[ST_SIZE]
411
if hasattr(os, 'urandom'): # python 2.4 and later
760
# Define rand_bytes based on platform.
762
# Python 2.4 and later have os.urandom,
763
# but it doesn't work on some arches
412
765
rand_bytes = os.urandom
413
elif sys.platform == 'linux2':
414
rand_bytes = file('/dev/urandom', 'rb').read
416
# not well seeded, but better than nothing
421
s += chr(random.randint(0, 255))
766
except (NotImplementedError, AttributeError):
767
# If python doesn't have os.urandom, or it doesn't work,
768
# then try to first pull random data from /dev/urandom
770
rand_bytes = file('/dev/urandom', 'rb').read
771
# Otherwise, use this hack as a last resort
772
except (IOError, OSError):
773
# not well seeded, but better than nothing
778
s += chr(random.randint(0, 255))
783
ALNUM = '0123456789abcdefghijklmnopqrstuvwxyz'
785
"""Return a random string of num alphanumeric characters
787
The result only contains lowercase chars because it may be used on
788
case-insensitive filesystems.
791
for raw_byte in rand_bytes(num):
792
s += ALNUM[ord(raw_byte) % 36]
426
796
## TODO: We could later have path objects that remember their list
427
797
## decomposition (might be too tricksy though.)
429
799
def splitpath(p):
430
"""Turn string into list of parts.
436
>>> splitpath('a/./b')
438
>>> splitpath('a/.b')
440
>>> splitpath('a/../b')
441
Traceback (most recent call last):
443
BzrError: sorry, '..' not allowed in path
445
assert isinstance(p, types.StringTypes)
800
"""Turn string into list of parts."""
447
801
# split on either delimiter because people might use either on
449
803
ps = re.split(r'[\\/]', p)
454
raise BzrError("sorry, %r not allowed in path" % f)
808
raise errors.BzrError("sorry, %r not allowed in path" % f)
455
809
elif (f == '.') or (f == ''):
462
assert isinstance(p, list)
464
if (f == '..') or (f == None) or (f == ''):
465
raise BzrError("sorry, %r not allowed in path" % f)
466
return os.path.join(*p)
469
def appendpath(p1, p2):
818
if (f == '..') or (f is None) or (f == ''):
819
raise errors.BzrError("sorry, %r not allowed in path" % f)
824
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
826
from bzrlib._chunks_to_lines_py import chunks_to_lines
830
"""Split s into lines, but without removing the newline characters."""
831
# Trivially convert a fulltext into a 'chunked' representation, and let
832
# chunks_to_lines do the heavy lifting.
833
if isinstance(s, str):
834
# chunks_to_lines only supports 8-bit strings
835
return chunks_to_lines([s])
473
return os.path.join(p1, p2)
476
def extern_command(cmd, ignore_errors = False):
477
mutter('external command: %s' % `cmd`)
479
if not ignore_errors:
480
raise BzrError('command failed')
483
def _read_config_value(name):
484
"""Read a config value from the file ~/.bzr.conf/<name>
485
Return None if the file does not exist"""
837
return _split_lines(s)
841
"""Split s into lines, but without removing the newline characters.
843
This supports Unicode or plain string objects.
845
lines = s.split('\n')
846
result = [line + '\n' for line in lines[:-1]]
848
result.append(lines[-1])
852
def hardlinks_good():
853
return sys.platform not in ('win32', 'cygwin', 'darwin')
856
def link_or_copy(src, dest):
857
"""Hardlink a file, or copy it if it can't be hardlinked."""
858
if not hardlinks_good():
859
shutil.copyfile(src, dest)
487
f = file(os.path.join(config_dir(), name), "r")
488
return f.read().decode(bzrlib.user_encoding).rstrip("\r\n")
490
if e.errno == errno.ENOENT:
496
"""Return a sequence of possible editor binaries for the current platform"""
497
e = _read_config_value("editor")
501
if os.name == "windows":
503
elif os.name == "posix":
505
yield os.environ["EDITOR"]
510
def _run_editor(filename):
511
"""Try to execute an editor to edit the commit message. Returns True on success,
513
for e in _get_editor():
514
x = os.spawnvp(os.P_WAIT, e, (e, filename))
863
except (OSError, IOError), e:
864
if e.errno != errno.EXDEV:
866
shutil.copyfile(src, dest)
869
# Look Before You Leap (LBYL) is appropriate here instead of Easier to Ask for
870
# Forgiveness than Permission (EAFP) because:
871
# - root can damage a solaris file system by using unlink,
872
# - unlink raises different exceptions on different OSes (linux: EISDIR, win32:
873
# EACCES, OSX: EPERM) when invoked on a directory.
874
def delete_any(path):
875
"""Delete a file or directory."""
876
if isdir(path): # Takes care of symlinks
883
if getattr(os, 'symlink', None) is not None:
890
if getattr(os, 'link', None) is not None:
896
def host_os_dereferences_symlinks():
897
return (has_symlinks()
898
and sys.platform not in ('cygwin', 'win32'))
901
def contains_whitespace(s):
902
"""True if there are any whitespace characters in s."""
903
# string.whitespace can include '\xa0' in certain locales, because it is
904
# considered "non-breaking-space" as part of ISO-8859-1. But it
905
# 1) Isn't a breaking whitespace
906
# 2) Isn't one of ' \t\r\n' which are characters we sometimes use as
908
# 3) '\xa0' isn't unicode safe since it is >128.
910
# This should *not* be a unicode set of characters in case the source
911
# string is not a Unicode string. We can auto-up-cast the characters since
912
# they are ascii, but we don't want to auto-up-cast the string in case it
914
for ch in ' \t\n\r\v\f':
921
def contains_linebreaks(s):
922
"""True if there is any vertical whitespace in s."""
930
def relpath(base, path):
931
"""Return path relative to base, or raise exception.
933
The path may be either an absolute path or a path relative to the
934
current working directory.
936
os.path.commonprefix (python2.4) has a bad bug that it works just
937
on string prefixes, assuming that '/u' is a prefix of '/u2'. This
941
if len(base) < MIN_ABS_PATHLENGTH:
942
# must have space for e.g. a drive letter
943
raise ValueError('%r is too short to calculate a relative path'
950
while len(head) >= len(base):
521
raise BzrError("Could not start any editor. Please specify $EDITOR or use ~/.bzr.conf/editor")
953
head, tail = os.path.split(head)
957
raise errors.PathNotChild(rp, base)
965
def safe_unicode(unicode_or_utf8_string):
966
"""Coerce unicode_or_utf8_string into unicode.
968
If it is unicode, it is returned.
969
Otherwise it is decoded from utf-8. If a decoding error
970
occurs, it is wrapped as a If the decoding fails, the exception is wrapped
971
as a BzrBadParameter exception.
973
if isinstance(unicode_or_utf8_string, unicode):
974
return unicode_or_utf8_string
976
return unicode_or_utf8_string.decode('utf8')
977
except UnicodeDecodeError:
978
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
981
def safe_utf8(unicode_or_utf8_string):
982
"""Coerce unicode_or_utf8_string to a utf8 string.
984
If it is a str, it is returned.
985
If it is Unicode, it is encoded into a utf-8 string.
987
if isinstance(unicode_or_utf8_string, str):
988
# TODO: jam 20070209 This is overkill, and probably has an impact on
989
# performance if we are dealing with lots of apis that want a
992
# Make sure it is a valid utf-8 string
993
unicode_or_utf8_string.decode('utf-8')
994
except UnicodeDecodeError:
995
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
996
return unicode_or_utf8_string
997
return unicode_or_utf8_string.encode('utf-8')
1000
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
1001
' Revision id generators should be creating utf8'
1005
def safe_revision_id(unicode_or_utf8_string, warn=True):
1006
"""Revision ids should now be utf8, but at one point they were unicode.
1008
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
1010
:param warn: Functions that are sanitizing user data can set warn=False
1011
:return: None or a utf8 revision id.
1013
if (unicode_or_utf8_string is None
1014
or unicode_or_utf8_string.__class__ == str):
1015
return unicode_or_utf8_string
1017
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
1019
return cache_utf8.encode(unicode_or_utf8_string)
1022
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
1023
' generators should be creating utf8 file ids.')
1026
def safe_file_id(unicode_or_utf8_string, warn=True):
1027
"""File ids should now be utf8, but at one point they were unicode.
1029
This is the same as safe_utf8, except it uses the cached encode functions
1030
to save a little bit of performance.
1032
:param unicode_or_utf8_string: A possibly Unicode file_id. (can also be
1034
:param warn: Functions that are sanitizing user data can set warn=False
1035
:return: None or a utf8 file id.
1037
if (unicode_or_utf8_string is None
1038
or unicode_or_utf8_string.__class__ == str):
1039
return unicode_or_utf8_string
1041
symbol_versioning.warn(_file_id_warning, DeprecationWarning,
1043
return cache_utf8.encode(unicode_or_utf8_string)
1046
_platform_normalizes_filenames = False
1047
if sys.platform == 'darwin':
1048
_platform_normalizes_filenames = True
1051
def normalizes_filenames():
1052
"""Return True if this platform normalizes unicode filenames.
1054
Mac OSX does, Windows/Linux do not.
1056
return _platform_normalizes_filenames
1059
def _accessible_normalized_filename(path):
1060
"""Get the unicode normalized path, and if you can access the file.
1062
On platforms where the system normalizes filenames (Mac OSX),
1063
you can access a file by any path which will normalize correctly.
1064
On platforms where the system does not normalize filenames
1065
(Windows, Linux), you have to access a file by its exact path.
1067
Internally, bzr only supports NFC normalization, since that is
1068
the standard for XML documents.
1070
So return the normalized path, and a flag indicating if the file
1071
can be accessed by that path.
1074
return unicodedata.normalize('NFC', unicode(path)), True
1077
def _inaccessible_normalized_filename(path):
1078
__doc__ = _accessible_normalized_filename.__doc__
1080
normalized = unicodedata.normalize('NFC', unicode(path))
1081
return normalized, normalized == path
1084
if _platform_normalizes_filenames:
1085
normalized_filename = _accessible_normalized_filename
1087
normalized_filename = _inaccessible_normalized_filename
1090
def terminal_width():
1091
"""Return estimated terminal width."""
1092
if sys.platform == 'win32':
1093
return win32utils.get_console_size()[0]
1096
import struct, fcntl, termios
1097
s = struct.pack('HHHH', 0, 0, 0, 0)
1098
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1099
width = struct.unpack('HHHH', x)[1]
1104
width = int(os.environ['COLUMNS'])
1113
def supports_executable():
1114
return sys.platform != "win32"
1117
def supports_posix_readonly():
1118
"""Return True if 'readonly' has POSIX semantics, False otherwise.
1120
Notably, a win32 readonly file cannot be deleted, unlike POSIX where the
1121
directory controls creation/deletion, etc.
1123
And under win32, readonly means that the directory itself cannot be
1124
deleted. The contents of a readonly directory can be changed, unlike POSIX
1125
where files in readonly directories cannot be added, deleted or renamed.
1127
return sys.platform != "win32"
1130
def set_or_unset_env(env_variable, value):
1131
"""Modify the environment, setting or removing the env_variable.
1133
:param env_variable: The environment variable in question
1134
:param value: The value to set the environment to. If None, then
1135
the variable will be removed.
1136
:return: The original value of the environment variable.
1138
orig_val = os.environ.get(env_variable)
1140
if orig_val is not None:
1141
del os.environ[env_variable]
1143
if isinstance(value, unicode):
1144
value = value.encode(get_user_encoding())
1145
os.environ[env_variable] = value
1149
_validWin32PathRE = re.compile(r'^([A-Za-z]:[/\\])?[^:<>*"?\|]*$')
1152
def check_legal_path(path):
1153
"""Check whether the supplied path is legal.
1154
This is only required on Windows, so we don't test on other platforms
1157
if sys.platform != "win32":
1159
if _validWin32PathRE.match(path) is None:
1160
raise errors.IllegalPath(path)
1163
_WIN32_ERROR_DIRECTORY = 267 # Similar to errno.ENOTDIR
1165
def _is_error_enotdir(e):
1166
"""Check if this exception represents ENOTDIR.
1168
Unfortunately, python is very inconsistent about the exception
1169
here. The cases are:
1170
1) Linux, Mac OSX all versions seem to set errno == ENOTDIR
1171
2) Windows, Python2.4, uses errno == ERROR_DIRECTORY (267)
1172
which is the windows error code.
1173
3) Windows, Python2.5 uses errno == EINVAL and
1174
winerror == ERROR_DIRECTORY
1176
:param e: An Exception object (expected to be OSError with an errno
1177
attribute, but we should be able to cope with anything)
1178
:return: True if this represents an ENOTDIR error. False otherwise.
1180
en = getattr(e, 'errno', None)
1181
if (en == errno.ENOTDIR
1182
or (sys.platform == 'win32'
1183
and (en == _WIN32_ERROR_DIRECTORY
1184
or (en == errno.EINVAL
1185
and getattr(e, 'winerror', None) == _WIN32_ERROR_DIRECTORY)
525
def get_text_message(infotext, ignoreline = "default"):
528
if ignoreline == "default":
529
ignoreline = "-- This line and the following will be ignored --"
532
tmp_fileno, msgfilename = tempfile.mkstemp()
533
msgfile = os.close(tmp_fileno)
534
if infotext is not None and infotext != "":
536
msgfile = file(msgfilename, "w")
537
msgfile.write("\n\n%s\n\n%s" % (ignoreline, infotext))
542
if not _run_editor(msgfilename):
547
lastline, nlines = 0, 0
548
for line in file(msgfilename, "r"):
549
stripped_line = line.strip()
550
# strip empty line before the log message starts
552
if stripped_line != "":
556
# check for the ignore line only if there
557
# is additional information at the end
558
if hasinfo and stripped_line == ignoreline:
561
# keep track of the last line that had some content
562
if stripped_line != "":
568
# delete empty lines at the end
570
# add a newline at the end, if needed
571
if not msg[-1].endswith("\n"):
572
return "%s%s" % ("".join(msg), "\n")
576
# delete the msg file in any case
577
try: os.unlink(msgfilename)
1191
def walkdirs(top, prefix=""):
1192
"""Yield data about all the directories in a tree.
1194
This yields all the data about the contents of a directory at a time.
1195
After each directory has been yielded, if the caller has mutated the list
1196
to exclude some directories, they are then not descended into.
1198
The data yielded is of the form:
1199
((directory-relpath, directory-path-from-top),
1200
[(relpath, basename, kind, lstat, path-from-top), ...]),
1201
- directory-relpath is the relative path of the directory being returned
1202
with respect to top. prefix is prepended to this.
1203
- directory-path-from-root is the path including top for this directory.
1204
It is suitable for use with os functions.
1205
- relpath is the relative path within the subtree being walked.
1206
- basename is the basename of the path
1207
- kind is the kind of the file now. If unknown then the file is not
1208
present within the tree - but it may be recorded as versioned. See
1210
- lstat is the stat data *if* the file was statted.
1211
- planned, not implemented:
1212
path_from_tree_root is the path from the root of the tree.
1214
:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
1215
allows one to walk a subtree but get paths that are relative to a tree
1217
:return: an iterator over the dirs.
1219
#TODO there is a bit of a smell where the results of the directory-
1220
# summary in this, and the path from the root, may not agree
1221
# depending on top and prefix - i.e. ./foo and foo as a pair leads to
1222
# potentially confusing output. We should make this more robust - but
1223
# not at a speed cost. RBC 20060731
1225
_directory = _directory_kind
1226
_listdir = os.listdir
1227
_kind_from_mode = file_kind_from_stat_mode
1228
pending = [(safe_unicode(prefix), "", _directory, None, safe_unicode(top))]
1230
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1231
relroot, _, _, _, top = pending.pop()
1233
relprefix = relroot + u'/'
1236
top_slash = top + u'/'
1239
append = dirblock.append
1241
names = sorted(_listdir(top))
1243
if not _is_error_enotdir(e):
1247
abspath = top_slash + name
1248
statvalue = _lstat(abspath)
1249
kind = _kind_from_mode(statvalue.st_mode)
1250
append((relprefix + name, name, kind, statvalue, abspath))
1251
yield (relroot, top), dirblock
1253
# push the user specified dirs from dirblock
1254
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1257
class DirReader(object):
1258
"""An interface for reading directories."""
1260
def top_prefix_to_starting_dir(self, top, prefix=""):
1261
"""Converts top and prefix to a starting dir entry
1263
:param top: A utf8 path
1264
:param prefix: An optional utf8 path to prefix output relative paths
1266
:return: A tuple starting with prefix, and ending with the native
1269
raise NotImplementedError(self.top_prefix_to_starting_dir)
1271
def read_dir(self, prefix, top):
1272
"""Read a specific dir.
1274
:param prefix: A utf8 prefix to be preprended to the path basenames.
1275
:param top: A natively encoded path to read.
1276
:return: A list of the directories contents. Each item contains:
1277
(utf8_relpath, utf8_name, kind, lstatvalue, native_abspath)
1279
raise NotImplementedError(self.read_dir)
1282
_selected_dir_reader = None
1285
def _walkdirs_utf8(top, prefix=""):
1286
"""Yield data about all the directories in a tree.
1288
This yields the same information as walkdirs() only each entry is yielded
1289
in utf-8. On platforms which have a filesystem encoding of utf8 the paths
1290
are returned as exact byte-strings.
1292
:return: yields a tuple of (dir_info, [file_info])
1293
dir_info is (utf8_relpath, path-from-top)
1294
file_info is (utf8_relpath, utf8_name, kind, lstat, path-from-top)
1295
if top is an absolute path, path-from-top is also an absolute path.
1296
path-from-top might be unicode or utf8, but it is the correct path to
1297
pass to os functions to affect the file in question. (such as os.lstat)
1299
global _selected_dir_reader
1300
if _selected_dir_reader is None:
1301
fs_encoding = _fs_enc.upper()
1302
if sys.platform == "win32" and win32utils.winver == 'Windows NT':
1303
# Win98 doesn't have unicode apis like FindFirstFileW
1304
# TODO: We possibly could support Win98 by falling back to the
1305
# original FindFirstFile, and using TCHAR instead of WCHAR,
1306
# but that gets a bit tricky, and requires custom compiling
1309
from bzrlib._walkdirs_win32 import Win32ReadDir
1311
_selected_dir_reader = UnicodeDirReader()
1313
_selected_dir_reader = Win32ReadDir()
1314
elif fs_encoding not in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1315
# ANSI_X3.4-1968 is a form of ASCII
1316
_selected_dir_reader = UnicodeDirReader()
1319
from bzrlib._readdir_pyx import UTF8DirReader
1321
# No optimised code path
1322
_selected_dir_reader = UnicodeDirReader()
1324
_selected_dir_reader = UTF8DirReader()
1325
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1326
# But we don't actually uses 1-3 in pending, so set them to None
1327
pending = [[_selected_dir_reader.top_prefix_to_starting_dir(top, prefix)]]
1328
read_dir = _selected_dir_reader.read_dir
1329
_directory = _directory_kind
1331
relroot, _, _, _, top = pending[-1].pop()
1334
dirblock = sorted(read_dir(relroot, top))
1335
yield (relroot, top), dirblock
1336
# push the user specified dirs from dirblock
1337
next = [d for d in reversed(dirblock) if d[2] == _directory]
1339
pending.append(next)
1342
class UnicodeDirReader(DirReader):
1343
"""A dir reader for non-utf8 file systems, which transcodes."""
1345
__slots__ = ['_utf8_encode']
1348
self._utf8_encode = codecs.getencoder('utf8')
1350
def top_prefix_to_starting_dir(self, top, prefix=""):
1351
"""See DirReader.top_prefix_to_starting_dir."""
1352
return (safe_utf8(prefix), None, None, None, safe_unicode(top))
1354
def read_dir(self, prefix, top):
1355
"""Read a single directory from a non-utf8 file system.
1357
top, and the abspath element in the output are unicode, all other paths
1358
are utf8. Local disk IO is done via unicode calls to listdir etc.
1360
This is currently the fallback code path when the filesystem encoding is
1361
not UTF-8. It may be better to implement an alternative so that we can
1362
safely handle paths that are not properly decodable in the current
1365
See DirReader.read_dir for details.
1367
_utf8_encode = self._utf8_encode
1369
_listdir = os.listdir
1370
_kind_from_mode = file_kind_from_stat_mode
1373
relprefix = prefix + '/'
1376
top_slash = top + u'/'
1379
append = dirblock.append
1380
for name in sorted(_listdir(top)):
1382
name_utf8 = _utf8_encode(name)[0]
1383
except UnicodeDecodeError:
1384
raise errors.BadFilenameEncoding(
1385
_utf8_encode(relprefix)[0] + name, _fs_enc)
1386
abspath = top_slash + name
1387
statvalue = _lstat(abspath)
1388
kind = _kind_from_mode(statvalue.st_mode)
1389
append((relprefix + name_utf8, name_utf8, kind, statvalue, abspath))
1393
def copy_tree(from_path, to_path, handlers={}):
1394
"""Copy all of the entries in from_path into to_path.
1396
:param from_path: The base directory to copy.
1397
:param to_path: The target directory. If it does not exist, it will
1399
:param handlers: A dictionary of functions, which takes a source and
1400
destinations for files, directories, etc.
1401
It is keyed on the file kind, such as 'directory', 'symlink', or 'file'
1402
'file', 'directory', and 'symlink' should always exist.
1403
If they are missing, they will be replaced with 'os.mkdir()',
1404
'os.readlink() + os.symlink()', and 'shutil.copy2()', respectively.
1406
# Now, just copy the existing cached tree to the new location
1407
# We use a cheap trick here.
1408
# Absolute paths are prefixed with the first parameter
1409
# relative paths are prefixed with the second.
1410
# So we can get both the source and target returned
1411
# without any extra work.
1413
def copy_dir(source, dest):
1416
def copy_link(source, dest):
1417
"""Copy the contents of a symlink"""
1418
link_to = os.readlink(source)
1419
os.symlink(link_to, dest)
1421
real_handlers = {'file':shutil.copy2,
1422
'symlink':copy_link,
1423
'directory':copy_dir,
1425
real_handlers.update(handlers)
1427
if not os.path.exists(to_path):
1428
real_handlers['directory'](from_path, to_path)
1430
for dir_info, entries in walkdirs(from_path, prefix=to_path):
1431
for relpath, name, kind, st, abspath in entries:
1432
real_handlers[kind](abspath, relpath)
1435
def path_prefix_key(path):
1436
"""Generate a prefix-order path key for path.
1438
This can be used to sort paths in the same way that walkdirs does.
1440
return (dirname(path) , path)
1443
def compare_paths_prefix_order(path_a, path_b):
1444
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1445
key_a = path_prefix_key(path_a)
1446
key_b = path_prefix_key(path_b)
1447
return cmp(key_a, key_b)
1450
_cached_user_encoding = None
1453
def get_user_encoding(use_cache=True):
1454
"""Find out what the preferred user encoding is.
1456
This is generally the encoding that is used for command line parameters
1457
and file contents. This may be different from the terminal encoding
1458
or the filesystem encoding.
1460
:param use_cache: Enable cache for detected encoding.
1461
(This parameter is turned on by default,
1462
and required only for selftesting)
1464
:return: A string defining the preferred user encoding
1466
global _cached_user_encoding
1467
if _cached_user_encoding is not None and use_cache:
1468
return _cached_user_encoding
1470
if sys.platform == 'darwin':
1471
# python locale.getpreferredencoding() always return
1472
# 'mac-roman' on darwin. That's a lie.
1473
sys.platform = 'posix'
1475
if os.environ.get('LANG', None) is None:
1476
# If LANG is not set, we end up with 'ascii', which is bad
1477
# ('mac-roman' is more than ascii), so we set a default which
1478
# will give us UTF-8 (which appears to work in all cases on
1479
# OSX). Users are still free to override LANG of course, as
1480
# long as it give us something meaningful. This work-around
1481
# *may* not be needed with python 3k and/or OSX 10.5, but will
1482
# work with them too -- vila 20080908
1483
os.environ['LANG'] = 'en_US.UTF-8'
1486
sys.platform = 'darwin'
1491
user_encoding = locale.getpreferredencoding()
1492
except locale.Error, e:
1493
sys.stderr.write('bzr: warning: %s\n'
1494
' Could not determine what text encoding to use.\n'
1495
' This error usually means your Python interpreter\n'
1496
' doesn\'t support the locale set by $LANG (%s)\n'
1497
" Continuing with ascii encoding.\n"
1498
% (e, os.environ.get('LANG')))
1499
user_encoding = 'ascii'
1501
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1502
# treat that as ASCII, and not support printing unicode characters to the
1505
# For python scripts run under vim, we get '', so also treat that as ASCII
1506
if user_encoding in (None, 'cp0', ''):
1507
user_encoding = 'ascii'
1511
codecs.lookup(user_encoding)
1513
sys.stderr.write('bzr: warning:'
1514
' unknown encoding %s.'
1515
' Continuing with ascii encoding.\n'
1518
user_encoding = 'ascii'
1521
_cached_user_encoding = user_encoding
1523
return user_encoding
1526
def get_host_name():
1527
"""Return the current unicode host name.
1529
This is meant to be used in place of socket.gethostname() because that
1530
behaves inconsistently on different platforms.
1532
if sys.platform == "win32":
1534
return win32utils.get_host_name()
1537
return socket.gethostname().decode(get_user_encoding())
1540
def recv_all(socket, bytes):
1541
"""Receive an exact number of bytes.
1543
Regular Socket.recv() may return less than the requested number of bytes,
1544
dependning on what's in the OS buffer. MSG_WAITALL is not available
1545
on all platforms, but this should work everywhere. This will return
1546
less than the requested amount if the remote end closes.
1548
This isn't optimized and is intended mostly for use in testing.
1551
while len(b) < bytes:
1552
new = socket.recv(bytes - len(b))
1559
def send_all(socket, bytes):
1560
"""Send all bytes on a socket.
1562
Regular socket.sendall() can give socket error 10053 on Windows. This
1563
implementation sends no more than 64k at a time, which avoids this problem.
1566
for pos in xrange(0, len(bytes), chunk_size):
1567
socket.sendall(bytes[pos:pos+chunk_size])
1570
def dereference_path(path):
1571
"""Determine the real path to a file.
1573
All parent elements are dereferenced. But the file itself is not
1575
:param path: The original path. May be absolute or relative.
1576
:return: the real path *to* the file
1578
parent, base = os.path.split(path)
1579
# The pathjoin for '.' is a workaround for Python bug #1213894.
1580
# (initial path components aren't dereferenced)
1581
return pathjoin(realpath(pathjoin('.', parent)), base)
1584
def supports_mapi():
1585
"""Return True if we can use MAPI to launch a mail client."""
1586
return sys.platform == "win32"
1589
def resource_string(package, resource_name):
1590
"""Load a resource from a package and return it as a string.
1592
Note: Only packages that start with bzrlib are currently supported.
1594
This is designed to be a lightweight implementation of resource
1595
loading in a way which is API compatible with the same API from
1597
http://peak.telecommunity.com/DevCenter/PkgResources#basic-resource-access.
1598
If and when pkg_resources becomes a standard library, this routine
1601
# Check package name is within bzrlib
1602
if package == "bzrlib":
1603
resource_relpath = resource_name
1604
elif package.startswith("bzrlib."):
1605
package = package[len("bzrlib."):].replace('.', os.sep)
1606
resource_relpath = pathjoin(package, resource_name)
1608
raise errors.BzrError('resource package %s not in bzrlib' % package)
1610
# Map the resource to a file and read its contents
1611
base = dirname(bzrlib.__file__)
1612
if getattr(sys, 'frozen', None): # bzr.exe
1613
base = abspath(pathjoin(base, '..', '..'))
1614
filename = pathjoin(base, resource_relpath)
1615
return open(filename, 'rU').read()
1618
def file_kind_from_stat_mode_thunk(mode):
1619
global file_kind_from_stat_mode
1620
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
1622
from bzrlib._readdir_pyx import UTF8DirReader
1623
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
1625
from bzrlib._readdir_py import (
1626
_kind_from_mode as file_kind_from_stat_mode
1628
return file_kind_from_stat_mode(mode)
1629
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
1632
def file_kind(f, _lstat=os.lstat):
1634
return file_kind_from_stat_mode(_lstat(f).st_mode)
1636
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
1637
raise errors.NoSuchFile(f)
1640
if sys.platform == "win32":
1643
return msvcrt.getch()
1648
fd = sys.stdin.fileno()
1649
settings = termios.tcgetattr(fd)
1652
ch = sys.stdin.read(1)
1654
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
added
removed
bzrlib/osutils.py
