47
113
This previously used backslash quoting, but that works poorly on
49
115
# TODO: I'm not really sure this is the best format either.x
117
if _QUOTE_RE is None:
118
_QUOTE_RE = re.compile(r'([^a-zA-Z0-9.,:/\\_~-])')
50
120
if _QUOTE_RE.search(f):
51
121
return '"' + f + '"'
57
mode = os.lstat(f)[ST_MODE]
65
raise BzrError("can't handle file kind with mode %o of %r" % (mode, f))
126
_directory_kind = 'directory'
129
stat.S_IFDIR:_directory_kind,
130
stat.S_IFCHR:'chardev',
131
stat.S_IFBLK:'block',
134
stat.S_IFLNK:'symlink',
135
stat.S_IFSOCK:'socket',
139
def file_kind_from_stat_mode(stat_mode, _formats=_formats, _unknown='unknown'):
140
"""Generate a file kind from a stat mode. This is used in walkdirs.
142
Its performance is critical: Do not mutate without careful benchmarking.
145
return _formats[stat_mode & 0170000]
150
def file_kind(f, _lstat=os.lstat, _mapper=file_kind_from_stat_mode):
152
return _mapper(_lstat(f).st_mode)
154
if getattr(e, 'errno', None) == errno.ENOENT:
155
raise errors.NoSuchFile(f)
160
"""Return the current umask"""
161
# Assume that people aren't messing with the umask while running
162
# XXX: This is not thread safe, but there is no way to get the
163
# umask without setting it
171
_directory_kind: "/",
173
'tree-reference': '+',
68
177
def kind_marker(kind):
71
elif kind == 'directory':
73
elif kind == 'symlink':
76
raise BzrError('invalid file kind %r' % kind)
179
return _kind_marker_map[kind]
181
raise errors.BzrError('invalid file kind %r' % kind)
184
lexists = getattr(os.path, 'lexists', None)
188
stat = getattr(os, 'lstat', os.stat)
192
if e.errno == errno.ENOENT:
195
raise errors.BzrError("lstat/stat of (%r): %r" % (f, e))
198
def fancy_rename(old, new, rename_func, unlink_func):
199
"""A fancy rename, when you don't have atomic rename.
201
:param old: The old path, to rename from
202
:param new: The new path, to rename to
203
:param rename_func: The potentially non-atomic rename function
204
:param unlink_func: A way to delete the target file if the full rename succeeds
207
# sftp rename doesn't allow overwriting, so play tricks:
209
base = os.path.basename(new)
210
dirname = os.path.dirname(new)
211
tmp_name = u'tmp.%s.%.9f.%d.%s' % (base, time.time(), os.getpid(), rand_chars(10))
212
tmp_name = pathjoin(dirname, tmp_name)
214
# Rename the file out of the way, but keep track if it didn't exist
215
# We don't want to grab just any exception
216
# something like EACCES should prevent us from continuing
217
# The downside is that the rename_func has to throw an exception
218
# with an errno = ENOENT, or NoSuchFile
221
rename_func(new, tmp_name)
222
except (errors.NoSuchFile,), e:
225
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
226
# function raises an IOError with errno is None when a rename fails.
227
# This then gets caught here.
228
if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
231
if (getattr(e, 'errno', None) is None
232
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
239
# This may throw an exception, in which case success will
241
rename_func(old, new)
245
# If the file used to exist, rename it back into place
246
# otherwise just delete it from the tmp location
248
unlink_func(tmp_name)
250
rename_func(tmp_name, new)
253
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
254
# choke on a Unicode string containing a relative path if
255
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
257
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
258
def _posix_abspath(path):
259
# jam 20060426 rather than encoding to fsencoding
260
# copy posixpath.abspath, but use os.getcwdu instead
261
if not posixpath.isabs(path):
262
path = posixpath.join(getcwd(), path)
263
return posixpath.normpath(path)
266
def _posix_realpath(path):
267
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
270
def _win32_fixdrive(path):
271
"""Force drive letters to be consistent.
273
win32 is inconsistent whether it returns lower or upper case
274
and even if it was consistent the user might type the other
275
so we force it to uppercase
276
running python.exe under cmd.exe return capital C:\\
277
running win32 python inside a cygwin shell returns lowercase c:\\
279
drive, path = _nt_splitdrive(path)
280
return drive.upper() + path
283
def _win32_abspath(path):
284
# Real _nt_abspath doesn't have a problem with a unicode cwd
285
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
288
def _win98_abspath(path):
289
"""Return the absolute version of a path.
290
Windows 98 safe implementation (python reimplementation
291
of Win32 API function GetFullPathNameW)
296
# \\HOST\path => //HOST/path
297
# //HOST/path => //HOST/path
298
# path => C:/cwd/path
301
# check for absolute path
302
drive = _nt_splitdrive(path)[0]
303
if drive == '' and path[:2] not in('//','\\\\'):
305
# we cannot simply os.path.join cwd and path
306
# because os.path.join('C:','/path') produce '/path'
307
# and this is incorrect
308
if path[:1] in ('/','\\'):
309
cwd = _nt_splitdrive(cwd)[0]
311
path = cwd + '\\' + path
312
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
314
if win32utils.winver == 'Windows 98':
315
_win32_abspath = _win98_abspath
318
def _win32_realpath(path):
319
# Real _nt_realpath doesn't have a problem with a unicode cwd
320
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
323
def _win32_pathjoin(*args):
324
return _nt_join(*args).replace('\\', '/')
327
def _win32_normpath(path):
328
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
332
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
335
def _win32_mkdtemp(*args, **kwargs):
336
return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
339
def _win32_rename(old, new):
340
"""We expect to be able to atomically replace 'new' with old.
342
On win32, if new exists, it must be moved out of the way first,
346
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
348
if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
349
# If we try to rename a non-existant file onto cwd, we get
350
# EPERM or EACCES instead of ENOENT, this will raise ENOENT
351
# if the old path doesn't exist, sometimes we get EACCES
352
# On Linux, we seem to get EBUSY, on Mac we get EINVAL
358
return unicodedata.normalize('NFKC', os.getcwdu())
361
# Default is to just use the python builtins, but these can be rebound on
362
# particular platforms.
363
abspath = _posix_abspath
364
realpath = _posix_realpath
365
pathjoin = os.path.join
366
normpath = os.path.normpath
369
dirname = os.path.dirname
370
basename = os.path.basename
371
split = os.path.split
372
splitext = os.path.splitext
373
# These were already imported into local scope
374
# mkdtemp = tempfile.mkdtemp
375
# rmtree = shutil.rmtree
377
MIN_ABS_PATHLENGTH = 1
380
if sys.platform == 'win32':
381
abspath = _win32_abspath
382
realpath = _win32_realpath
383
pathjoin = _win32_pathjoin
384
normpath = _win32_normpath
385
getcwd = _win32_getcwd
386
mkdtemp = _win32_mkdtemp
387
rename = _win32_rename
389
MIN_ABS_PATHLENGTH = 3
391
def _win32_delete_readonly(function, path, excinfo):
392
"""Error handler for shutil.rmtree function [for win32]
393
Helps to remove files and dirs marked as read-only.
395
exception = excinfo[1]
396
if function in (os.remove, os.rmdir) \
397
and isinstance(exception, OSError) \
398
and exception.errno == errno.EACCES:
404
def rmtree(path, ignore_errors=False, onerror=_win32_delete_readonly):
405
"""Replacer for shutil.rmtree: could remove readonly dirs/files"""
406
return shutil.rmtree(path, ignore_errors, onerror)
407
elif sys.platform == 'darwin':
411
def get_terminal_encoding():
412
"""Find the best encoding for printing to the screen.
414
This attempts to check both sys.stdout and sys.stdin to see
415
what encoding they are in, and if that fails it falls back to
416
bzrlib.user_encoding.
417
The problem is that on Windows, locale.getpreferredencoding()
418
is not the same encoding as that used by the console:
419
http://mail.python.org/pipermail/python-list/2003-May/162357.html
421
On my standard US Windows XP, the preferred encoding is
422
cp1252, but the console is cp437
424
output_encoding = getattr(sys.stdout, 'encoding', None)
425
if not output_encoding:
426
input_encoding = getattr(sys.stdin, 'encoding', None)
427
if not input_encoding:
428
output_encoding = bzrlib.user_encoding
429
mutter('encoding stdout as bzrlib.user_encoding %r', output_encoding)
431
output_encoding = input_encoding
432
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
434
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
435
if output_encoding == 'cp0':
436
# invalid encoding (cp0 means 'no codepage' on Windows)
437
output_encoding = bzrlib.user_encoding
438
mutter('cp0 is invalid encoding.'
439
' encoding stdout as bzrlib.user_encoding %r', output_encoding)
442
codecs.lookup(output_encoding)
444
sys.stderr.write('bzr: warning:'
445
' unknown terminal encoding %s.\n'
446
' Using encoding %s instead.\n'
447
% (output_encoding, bzrlib.user_encoding)
449
output_encoding = bzrlib.user_encoding
451
return output_encoding
454
def normalizepath(f):
455
if getattr(os.path, 'realpath', None) is not None:
459
[p,e] = os.path.split(f)
460
if e == "" or e == "." or e == "..":
463
return pathjoin(F(p), e)
80
466
def backup_file(fn):
342
616
def local_time_offset(t=None):
343
617
"""Return offset of local zone from GMT, either at present or at time t."""
344
# python2.3 localtime() can't take None
348
if time.localtime(t).tm_isdst and time.daylight:
351
return -time.timezone
354
def format_date(t, offset=0, timezone='original'):
355
## TODO: Perhaps a global option to use either universal or local time?
356
## Or perhaps just let people set $TZ?
357
assert isinstance(t, float)
620
offset = datetime.fromtimestamp(t) - datetime.utcfromtimestamp(t)
621
return offset.days * 86400 + offset.seconds
624
def format_date(t, offset=0, timezone='original', date_fmt=None,
626
"""Return a formatted date string.
628
:param t: Seconds since the epoch.
629
:param offset: Timezone offset in seconds east of utc.
630
:param timezone: How to display the time: 'utc', 'original' for the
631
timezone specified by offset, or 'local' for the process's current
633
:param show_offset: Whether to append the timezone.
634
:param date_fmt: strftime format.
359
636
if timezone == 'utc':
360
637
tt = time.gmtime(t)
362
639
elif timezone == 'original':
365
642
tt = time.gmtime(t + offset)
366
643
elif timezone == 'local':
367
644
tt = time.localtime(t)
368
645
offset = local_time_offset(t)
370
raise BzrError("unsupported timezone format %r" % timezone,
371
['options are "utc", "original", "local"'])
373
return (time.strftime("%a %Y-%m-%d %H:%M:%S", tt)
374
+ ' %+03d%02d' % (offset / 3600, (offset / 60) % 60))
647
raise errors.BzrError("unsupported timezone format %r" % timezone,
648
['options are "utc", "original", "local"'])
650
date_fmt = "%a %Y-%m-%d %H:%M:%S"
652
offset_str = ' %+03d%02d' % (offset / 3600, (offset / 60) % 60)
655
return (time.strftime(date_fmt, tt) + offset_str)
377
658
def compact_date(when):
378
659
return time.strftime('%Y%m%d%H%M%S', time.gmtime(when))
662
def format_delta(delta):
663
"""Get a nice looking string for a time delta.
665
:param delta: The time difference in seconds, can be positive or negative.
666
positive indicates time in the past, negative indicates time in the
667
future. (usually time.time() - stored_time)
668
:return: String formatted to show approximate resolution
674
direction = 'in the future'
678
if seconds < 90: # print seconds up to 90 seconds
680
return '%d second %s' % (seconds, direction,)
682
return '%d seconds %s' % (seconds, direction)
684
minutes = int(seconds / 60)
685
seconds -= 60 * minutes
690
if minutes < 90: # print minutes, seconds up to 90 minutes
692
return '%d minute, %d second%s %s' % (
693
minutes, seconds, plural_seconds, direction)
695
return '%d minutes, %d second%s %s' % (
696
minutes, seconds, plural_seconds, direction)
698
hours = int(minutes / 60)
699
minutes -= 60 * hours
706
return '%d hour, %d minute%s %s' % (hours, minutes,
707
plural_minutes, direction)
708
return '%d hours, %d minute%s %s' % (hours, minutes,
709
plural_minutes, direction)
383
712
"""Return size of given open file."""
384
713
return os.fstat(f.fileno())[ST_SIZE]
387
if hasattr(os, 'urandom'): # python 2.4 and later
716
# Define rand_bytes based on platform.
718
# Python 2.4 and later have os.urandom,
719
# but it doesn't work on some arches
388
721
rand_bytes = os.urandom
389
elif sys.platform == 'linux2':
390
rand_bytes = file('/dev/urandom', 'rb').read
392
# not well seeded, but better than nothing
397
s += chr(random.randint(0, 255))
722
except (NotImplementedError, AttributeError):
723
# If python doesn't have os.urandom, or it doesn't work,
724
# then try to first pull random data from /dev/urandom
726
rand_bytes = file('/dev/urandom', 'rb').read
727
# Otherwise, use this hack as a last resort
728
except (IOError, OSError):
729
# not well seeded, but better than nothing
734
s += chr(random.randint(0, 255))
739
ALNUM = '0123456789abcdefghijklmnopqrstuvwxyz'
741
"""Return a random string of num alphanumeric characters
743
The result only contains lowercase chars because it may be used on
744
case-insensitive filesystems.
747
for raw_byte in rand_bytes(num):
748
s += ALNUM[ord(raw_byte) % 36]
402
752
## TODO: We could later have path objects that remember their list
403
753
## decomposition (might be too tricksy though.)
405
755
def splitpath(p):
406
"""Turn string into list of parts.
412
>>> splitpath('a/./b')
414
>>> splitpath('a/.b')
416
>>> splitpath('a/../b')
417
Traceback (most recent call last):
419
BzrError: sorry, '..' not allowed in path
421
assert isinstance(p, types.StringTypes)
756
"""Turn string into list of parts."""
757
assert isinstance(p, basestring)
423
759
# split on either delimiter because people might use either on
438
assert isinstance(p, list)
774
assert isinstance(p, (list, tuple))
440
if (f == '..') or (f == None) or (f == ''):
441
raise BzrError("sorry, %r not allowed in path" % f)
442
return os.path.join(*p)
445
def appendpath(p1, p2):
449
return os.path.join(p1, p2)
452
def extern_command(cmd, ignore_errors = False):
453
mutter('external command: %s' % `cmd`)
455
if not ignore_errors:
456
raise BzrError('command failed')
459
def _read_config_value(name):
460
"""Read a config value from the file ~/.bzr.conf/<name>
461
Return None if the file does not exist"""
776
if (f == '..') or (f is None) or (f == ''):
777
raise errors.BzrError("sorry, %r not allowed in path" % f)
782
"""Split s into lines, but without removing the newline characters."""
783
lines = s.split('\n')
784
result = [line + '\n' for line in lines[:-1]]
786
result.append(lines[-1])
790
def hardlinks_good():
791
return sys.platform not in ('win32', 'cygwin', 'darwin')
794
def link_or_copy(src, dest):
795
"""Hardlink a file, or copy it if it can't be hardlinked."""
796
if not hardlinks_good():
797
shutil.copyfile(src, dest)
463
f = file(os.path.join(config_dir(), name), "r")
464
return f.read().decode(bzrlib.user_encoding).rstrip("\r\n")
466
if e.errno == errno.ENOENT:
472
"""Return a sequence of possible editor binaries for the current platform"""
473
e = _read_config_value("editor")
477
if os.name == "windows":
479
elif os.name == "posix":
481
yield os.environ["EDITOR"]
486
def _run_editor(filename):
487
"""Try to execute an editor to edit the commit message. Returns True on success,
489
for e in _get_editor():
490
x = os.spawnvp(os.P_WAIT, e, (e, filename))
801
except (OSError, IOError), e:
802
if e.errno != errno.EXDEV:
804
shutil.copyfile(src, dest)
807
# Look Before You Leap (LBYL) is appropriate here instead of Easier to Ask for
808
# Forgiveness than Permission (EAFP) because:
809
# - root can damage a solaris file system by using unlink,
810
# - unlink raises different exceptions on different OSes (linux: EISDIR, win32:
811
# EACCES, OSX: EPERM) when invoked on a directory.
812
def delete_any(path):
813
"""Delete a file or directory."""
814
if isdir(path): # Takes care of symlinks
821
if getattr(os, 'symlink', None) is not None:
827
def contains_whitespace(s):
828
"""True if there are any whitespace characters in s."""
829
# string.whitespace can include '\xa0' in certain locales, because it is
830
# considered "non-breaking-space" as part of ISO-8859-1. But it
831
# 1) Isn't a breaking whitespace
832
# 2) Isn't one of ' \t\r\n' which are characters we sometimes use as
834
# 3) '\xa0' isn't unicode safe since it is >128.
836
# This should *not* be a unicode set of characters in case the source
837
# string is not a Unicode string. We can auto-up-cast the characters since
838
# they are ascii, but we don't want to auto-up-cast the string in case it
840
for ch in ' \t\n\r\v\f':
847
def contains_linebreaks(s):
848
"""True if there is any vertical whitespace in s."""
856
def relpath(base, path):
857
"""Return path relative to base, or raise exception.
859
The path may be either an absolute path or a path relative to the
860
current working directory.
862
os.path.commonprefix (python2.4) has a bad bug that it works just
863
on string prefixes, assuming that '/u' is a prefix of '/u2'. This
867
assert len(base) >= MIN_ABS_PATHLENGTH, ('Length of base must be equal or'
868
' exceed the platform minimum length (which is %d)' %
875
while len(head) >= len(base):
497
raise BzrError("Could not start any editor. Please specify $EDITOR or use ~/.bzr.conf/editor")
501
def get_text_message(infotext, ignoreline = "default"):
504
if ignoreline == "default":
505
ignoreline = "-- This line and the following will be ignored --"
508
tmp_fileno, msgfilename = tempfile.mkstemp()
509
msgfile = os.close(tmp_fileno)
510
if infotext is not None and infotext != "":
512
msgfile = file(msgfilename, "w")
513
msgfile.write("\n\n%s\n\n%s" % (ignoreline, infotext))
518
if not _run_editor(msgfilename):
523
lastline, nlines = 0, 0
524
for line in file(msgfilename, "r"):
525
stripped_line = line.strip()
526
# strip empty line before the log message starts
528
if stripped_line != "":
532
# check for the ignore line only if there
533
# is additional information at the end
534
if hasinfo and stripped_line == ignoreline:
537
# keep track of the last line that had some content
538
if stripped_line != "":
544
# delete empty lines at the end
546
# add a newline at the end, if needed
547
if not msg[-1].endswith("\n"):
548
return "%s%s" % ("".join(msg), "\n")
552
# delete the msg file in any case
553
try: os.unlink(msgfilename)
878
head, tail = os.path.split(head)
882
raise errors.PathNotChild(rp, base)
890
def safe_unicode(unicode_or_utf8_string):
891
"""Coerce unicode_or_utf8_string into unicode.
893
If it is unicode, it is returned.
894
Otherwise it is decoded from utf-8. If a decoding error
895
occurs, it is wrapped as a If the decoding fails, the exception is wrapped
896
as a BzrBadParameter exception.
898
if isinstance(unicode_or_utf8_string, unicode):
899
return unicode_or_utf8_string
901
return unicode_or_utf8_string.decode('utf8')
902
except UnicodeDecodeError:
903
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
906
def safe_utf8(unicode_or_utf8_string):
907
"""Coerce unicode_or_utf8_string to a utf8 string.
909
If it is a str, it is returned.
910
If it is Unicode, it is encoded into a utf-8 string.
912
if isinstance(unicode_or_utf8_string, str):
913
# TODO: jam 20070209 This is overkill, and probably has an impact on
914
# performance if we are dealing with lots of apis that want a
917
# Make sure it is a valid utf-8 string
918
unicode_or_utf8_string.decode('utf-8')
919
except UnicodeDecodeError:
920
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
921
return unicode_or_utf8_string
922
return unicode_or_utf8_string.encode('utf-8')
925
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
926
' Revision id generators should be creating utf8'
930
def safe_revision_id(unicode_or_utf8_string, warn=True):
931
"""Revision ids should now be utf8, but at one point they were unicode.
933
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
935
:param warn: Functions that are sanitizing user data can set warn=False
936
:return: None or a utf8 revision id.
938
if (unicode_or_utf8_string is None
939
or unicode_or_utf8_string.__class__ == str):
940
return unicode_or_utf8_string
942
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
944
return cache_utf8.encode(unicode_or_utf8_string)
947
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
948
' generators should be creating utf8 file ids.')
951
def safe_file_id(unicode_or_utf8_string, warn=True):
952
"""File ids should now be utf8, but at one point they were unicode.
954
This is the same as safe_utf8, except it uses the cached encode functions
955
to save a little bit of performance.
957
:param unicode_or_utf8_string: A possibly Unicode file_id. (can also be
959
:param warn: Functions that are sanitizing user data can set warn=False
960
:return: None or a utf8 file id.
962
if (unicode_or_utf8_string is None
963
or unicode_or_utf8_string.__class__ == str):
964
return unicode_or_utf8_string
966
symbol_versioning.warn(_file_id_warning, DeprecationWarning,
968
return cache_utf8.encode(unicode_or_utf8_string)
971
_platform_normalizes_filenames = False
972
if sys.platform == 'darwin':
973
_platform_normalizes_filenames = True
976
def normalizes_filenames():
977
"""Return True if this platform normalizes unicode filenames.
979
Mac OSX does, Windows/Linux do not.
981
return _platform_normalizes_filenames
984
def _accessible_normalized_filename(path):
985
"""Get the unicode normalized path, and if you can access the file.
987
On platforms where the system normalizes filenames (Mac OSX),
988
you can access a file by any path which will normalize correctly.
989
On platforms where the system does not normalize filenames
990
(Windows, Linux), you have to access a file by its exact path.
992
Internally, bzr only supports NFC/NFKC normalization, since that is
993
the standard for XML documents.
995
So return the normalized path, and a flag indicating if the file
996
can be accessed by that path.
999
return unicodedata.normalize('NFKC', unicode(path)), True
1002
def _inaccessible_normalized_filename(path):
1003
__doc__ = _accessible_normalized_filename.__doc__
1005
normalized = unicodedata.normalize('NFKC', unicode(path))
1006
return normalized, normalized == path
1009
if _platform_normalizes_filenames:
1010
normalized_filename = _accessible_normalized_filename
1012
normalized_filename = _inaccessible_normalized_filename
1015
def terminal_width():
1016
"""Return estimated terminal width."""
1017
if sys.platform == 'win32':
1018
return win32utils.get_console_size()[0]
1021
import struct, fcntl, termios
1022
s = struct.pack('HHHH', 0, 0, 0, 0)
1023
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1024
width = struct.unpack('HHHH', x)[1]
1029
width = int(os.environ['COLUMNS'])
1038
def supports_executable():
1039
return sys.platform != "win32"
1042
def supports_posix_readonly():
1043
"""Return True if 'readonly' has POSIX semantics, False otherwise.
1045
Notably, a win32 readonly file cannot be deleted, unlike POSIX where the
1046
directory controls creation/deletion, etc.
1048
And under win32, readonly means that the directory itself cannot be
1049
deleted. The contents of a readonly directory can be changed, unlike POSIX
1050
where files in readonly directories cannot be added, deleted or renamed.
1052
return sys.platform != "win32"
1055
def set_or_unset_env(env_variable, value):
1056
"""Modify the environment, setting or removing the env_variable.
1058
:param env_variable: The environment variable in question
1059
:param value: The value to set the environment to. If None, then
1060
the variable will be removed.
1061
:return: The original value of the environment variable.
1063
orig_val = os.environ.get(env_variable)
1065
if orig_val is not None:
1066
del os.environ[env_variable]
1068
if isinstance(value, unicode):
1069
value = value.encode(bzrlib.user_encoding)
1070
os.environ[env_variable] = value
1074
_validWin32PathRE = re.compile(r'^([A-Za-z]:[/\\])?[^:<>*"?\|]*$')
1077
def check_legal_path(path):
1078
"""Check whether the supplied path is legal.
1079
This is only required on Windows, so we don't test on other platforms
1082
if sys.platform != "win32":
1084
if _validWin32PathRE.match(path) is None:
1085
raise errors.IllegalPath(path)
1088
def walkdirs(top, prefix=""):
1089
"""Yield data about all the directories in a tree.
1091
This yields all the data about the contents of a directory at a time.
1092
After each directory has been yielded, if the caller has mutated the list
1093
to exclude some directories, they are then not descended into.
1095
The data yielded is of the form:
1096
((directory-relpath, directory-path-from-top),
1097
[(relpath, basename, kind, lstat, path-from-top), ...]),
1098
- directory-relpath is the relative path of the directory being returned
1099
with respect to top. prefix is prepended to this.
1100
- directory-path-from-root is the path including top for this directory.
1101
It is suitable for use with os functions.
1102
- relpath is the relative path within the subtree being walked.
1103
- basename is the basename of the path
1104
- kind is the kind of the file now. If unknown then the file is not
1105
present within the tree - but it may be recorded as versioned. See
1107
- lstat is the stat data *if* the file was statted.
1108
- planned, not implemented:
1109
path_from_tree_root is the path from the root of the tree.
1111
:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
1112
allows one to walk a subtree but get paths that are relative to a tree
1114
:return: an iterator over the dirs.
1116
#TODO there is a bit of a smell where the results of the directory-
1117
# summary in this, and the path from the root, may not agree
1118
# depending on top and prefix - i.e. ./foo and foo as a pair leads to
1119
# potentially confusing output. We should make this more robust - but
1120
# not at a speed cost. RBC 20060731
1122
_directory = _directory_kind
1123
_listdir = os.listdir
1124
_kind_from_mode = _formats.get
1125
pending = [(safe_unicode(prefix), "", _directory, None, safe_unicode(top))]
1127
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1128
relroot, _, _, _, top = pending.pop()
1130
relprefix = relroot + u'/'
1133
top_slash = top + u'/'
1136
append = dirblock.append
1137
for name in sorted(_listdir(top)):
1138
abspath = top_slash + name
1139
statvalue = _lstat(abspath)
1140
kind = _kind_from_mode(statvalue.st_mode & 0170000, 'unknown')
1141
append((relprefix + name, name, kind, statvalue, abspath))
1142
yield (relroot, top), dirblock
1144
# push the user specified dirs from dirblock
1145
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1148
def _walkdirs_utf8(top, prefix=""):
1149
"""Yield data about all the directories in a tree.
1151
This yields the same information as walkdirs() only each entry is yielded
1152
in utf-8. On platforms which have a filesystem encoding of utf8 the paths
1153
are returned as exact byte-strings.
1155
:return: yields a tuple of (dir_info, [file_info])
1156
dir_info is (utf8_relpath, path-from-top)
1157
file_info is (utf8_relpath, utf8_name, kind, lstat, path-from-top)
1158
if top is an absolute path, path-from-top is also an absolute path.
1159
path-from-top might be unicode or utf8, but it is the correct path to
1160
pass to os functions to affect the file in question. (such as os.lstat)
1162
fs_encoding = _fs_enc.upper()
1163
if (sys.platform == 'win32' or
1164
fs_encoding not in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968')): # ascii
1165
return _walkdirs_unicode_to_utf8(top, prefix=prefix)
1167
return _walkdirs_fs_utf8(top, prefix=prefix)
1170
def _walkdirs_fs_utf8(top, prefix=""):
1171
"""See _walkdirs_utf8.
1173
This sub-function is called when we know the filesystem is already in utf8
1174
encoding. So we don't need to transcode filenames.
1177
_directory = _directory_kind
1178
_listdir = os.listdir
1179
_kind_from_mode = _formats.get
1181
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1182
# But we don't actually uses 1-3 in pending, so set them to None
1183
pending = [(safe_utf8(prefix), None, None, None, safe_utf8(top))]
1185
relroot, _, _, _, top = pending.pop()
1187
relprefix = relroot + '/'
1190
top_slash = top + '/'
1193
append = dirblock.append
1194
for name in sorted(_listdir(top)):
1195
abspath = top_slash + name
1196
statvalue = _lstat(abspath)
1197
kind = _kind_from_mode(statvalue.st_mode & 0170000, 'unknown')
1198
append((relprefix + name, name, kind, statvalue, abspath))
1199
yield (relroot, top), dirblock
1201
# push the user specified dirs from dirblock
1202
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1205
def _walkdirs_unicode_to_utf8(top, prefix=""):
1206
"""See _walkdirs_utf8
1208
Because Win32 has a Unicode api, all of the 'path-from-top' entries will be
1210
This is currently the fallback code path when the filesystem encoding is
1211
not UTF-8. It may be better to implement an alternative so that we can
1212
safely handle paths that are not properly decodable in the current
1215
_utf8_encode = codecs.getencoder('utf8')
1217
_directory = _directory_kind
1218
_listdir = os.listdir
1219
_kind_from_mode = _formats.get
1221
pending = [(safe_utf8(prefix), None, None, None, safe_unicode(top))]
1223
relroot, _, _, _, top = pending.pop()
1225
relprefix = relroot + '/'
1228
top_slash = top + u'/'
1231
append = dirblock.append
1232
for name in sorted(_listdir(top)):
1233
name_utf8 = _utf8_encode(name)[0]
1234
abspath = top_slash + name
1235
statvalue = _lstat(abspath)
1236
kind = _kind_from_mode(statvalue.st_mode & 0170000, 'unknown')
1237
append((relprefix + name_utf8, name_utf8, kind, statvalue, abspath))
1238
yield (relroot, top), dirblock
1240
# push the user specified dirs from dirblock
1241
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1244
def copy_tree(from_path, to_path, handlers={}):
1245
"""Copy all of the entries in from_path into to_path.
1247
:param from_path: The base directory to copy.
1248
:param to_path: The target directory. If it does not exist, it will
1250
:param handlers: A dictionary of functions, which takes a source and
1251
destinations for files, directories, etc.
1252
It is keyed on the file kind, such as 'directory', 'symlink', or 'file'
1253
'file', 'directory', and 'symlink' should always exist.
1254
If they are missing, they will be replaced with 'os.mkdir()',
1255
'os.readlink() + os.symlink()', and 'shutil.copy2()', respectively.
1257
# Now, just copy the existing cached tree to the new location
1258
# We use a cheap trick here.
1259
# Absolute paths are prefixed with the first parameter
1260
# relative paths are prefixed with the second.
1261
# So we can get both the source and target returned
1262
# without any extra work.
1264
def copy_dir(source, dest):
1267
def copy_link(source, dest):
1268
"""Copy the contents of a symlink"""
1269
link_to = os.readlink(source)
1270
os.symlink(link_to, dest)
1272
real_handlers = {'file':shutil.copy2,
1273
'symlink':copy_link,
1274
'directory':copy_dir,
1276
real_handlers.update(handlers)
1278
if not os.path.exists(to_path):
1279
real_handlers['directory'](from_path, to_path)
1281
for dir_info, entries in walkdirs(from_path, prefix=to_path):
1282
for relpath, name, kind, st, abspath in entries:
1283
real_handlers[kind](abspath, relpath)
1286
def path_prefix_key(path):
1287
"""Generate a prefix-order path key for path.
1289
This can be used to sort paths in the same way that walkdirs does.
1291
return (dirname(path) , path)
1294
def compare_paths_prefix_order(path_a, path_b):
1295
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1296
key_a = path_prefix_key(path_a)
1297
key_b = path_prefix_key(path_b)
1298
return cmp(key_a, key_b)
1301
_cached_user_encoding = None
1304
def get_user_encoding(use_cache=True):
1305
"""Find out what the preferred user encoding is.
1307
This is generally the encoding that is used for command line parameters
1308
and file contents. This may be different from the terminal encoding
1309
or the filesystem encoding.
1311
:param use_cache: Enable cache for detected encoding.
1312
(This parameter is turned on by default,
1313
and required only for selftesting)
1315
:return: A string defining the preferred user encoding
1317
global _cached_user_encoding
1318
if _cached_user_encoding is not None and use_cache:
1319
return _cached_user_encoding
1321
if sys.platform == 'darwin':
1322
# work around egregious python 2.4 bug
1323
sys.platform = 'posix'
1327
sys.platform = 'darwin'
1332
user_encoding = locale.getpreferredencoding()
1333
except locale.Error, e:
1334
sys.stderr.write('bzr: warning: %s\n'
1335
' Could not determine what text encoding to use.\n'
1336
' This error usually means your Python interpreter\n'
1337
' doesn\'t support the locale set by $LANG (%s)\n'
1338
" Continuing with ascii encoding.\n"
1339
% (e, os.environ.get('LANG')))
1340
user_encoding = 'ascii'
1342
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1343
# treat that as ASCII, and not support printing unicode characters to the
1345
if user_encoding in (None, 'cp0'):
1346
user_encoding = 'ascii'
1350
codecs.lookup(user_encoding)
1352
sys.stderr.write('bzr: warning:'
1353
' unknown encoding %s.'
1354
' Continuing with ascii encoding.\n'
1357
user_encoding = 'ascii'
1360
_cached_user_encoding = user_encoding
1362
return user_encoding
1365
def recv_all(socket, bytes):
1366
"""Receive an exact number of bytes.
1368
Regular Socket.recv() may return less than the requested number of bytes,
1369
dependning on what's in the OS buffer. MSG_WAITALL is not available
1370
on all platforms, but this should work everywhere. This will return
1371
less than the requested amount if the remote end closes.
1373
This isn't optimized and is intended mostly for use in testing.
1376
while len(b) < bytes:
1377
new = socket.recv(bytes - len(b))
1383
def dereference_path(path):
1384
"""Determine the real path to a file.
1386
All parent elements are dereferenced. But the file itself is not
1388
:param path: The original path. May be absolute or relative.
1389
:return: the real path *to* the file
1391
parent, base = os.path.split(path)
1392
# The pathjoin for '.' is a workaround for Python bug #1213894.
1393
# (initial path components aren't dereferenced)
1394
return pathjoin(realpath(pathjoin('.', parent)), base)
1397
def supports_mapi():
1398
"""Return True if we can use MAPI to launch a mail client."""
1399
return sys.platform == "win32"
added
removed
bzrlib/osutils.py
