47
92
This previously used backslash quoting, but that works poorly on
49
94
# TODO: I'm not really sure this is the best format either.x
97
_QUOTE_RE = re.compile(r'([^a-zA-Z0-9.,:/\\_~-])')
50
99
if _QUOTE_RE.search(f):
51
100
return '"' + f + '"'
57
mode = os.lstat(f)[ST_MODE]
65
raise BzrError("can't handle file kind with mode %o of %r" % (mode, f))
105
_directory_kind = 'directory'
108
stat.S_IFDIR:_directory_kind,
109
stat.S_IFCHR:'chardev',
110
stat.S_IFBLK:'block',
113
stat.S_IFLNK:'symlink',
114
stat.S_IFSOCK:'socket',
118
def file_kind_from_stat_mode(stat_mode, _formats=_formats, _unknown='unknown'):
119
"""Generate a file kind from a stat mode. This is used in walkdirs.
121
Its performance is critical: Do not mutate without careful benchmarking.
124
return _formats[stat_mode & 0170000]
129
def file_kind(f, _lstat=os.lstat, _mapper=file_kind_from_stat_mode):
131
return _mapper(_lstat(f).st_mode)
133
if getattr(e, 'errno', None) == errno.ENOENT:
134
raise errors.NoSuchFile(f)
139
"""Return the current umask"""
140
# Assume that people aren't messing with the umask while running
141
# XXX: This is not thread safe, but there is no way to get the
142
# umask without setting it
68
148
def kind_marker(kind):
69
149
if kind == 'file':
71
elif kind == 'directory':
151
elif kind == _directory_kind:
73
153
elif kind == 'symlink':
76
raise BzrError('invalid file kind %r' % kind)
156
raise errors.BzrError('invalid file kind %r' % kind)
158
lexists = getattr(os.path, 'lexists', None)
162
if getattr(os, 'lstat') is not None:
168
if e.errno == errno.ENOENT:
171
raise errors.BzrError("lstat/stat of (%r): %r" % (f, e))
174
def fancy_rename(old, new, rename_func, unlink_func):
175
"""A fancy rename, when you don't have atomic rename.
177
:param old: The old path, to rename from
178
:param new: The new path, to rename to
179
:param rename_func: The potentially non-atomic rename function
180
:param unlink_func: A way to delete the target file if the full rename succeeds
183
# sftp rename doesn't allow overwriting, so play tricks:
185
base = os.path.basename(new)
186
dirname = os.path.dirname(new)
187
tmp_name = u'tmp.%s.%.9f.%d.%s' % (base, time.time(), os.getpid(), rand_chars(10))
188
tmp_name = pathjoin(dirname, tmp_name)
190
# Rename the file out of the way, but keep track if it didn't exist
191
# We don't want to grab just any exception
192
# something like EACCES should prevent us from continuing
193
# The downside is that the rename_func has to throw an exception
194
# with an errno = ENOENT, or NoSuchFile
197
rename_func(new, tmp_name)
198
except (errors.NoSuchFile,), e:
201
# RBC 20060103 abstraction leakage: the paramiko SFTP clients rename
202
# function raises an IOError with errno is None when a rename fails.
203
# This then gets caught here.
204
if e.errno not in (None, errno.ENOENT, errno.ENOTDIR):
207
if (getattr(e, 'errno', None) is None
208
or e.errno not in (errno.ENOENT, errno.ENOTDIR)):
215
# This may throw an exception, in which case success will
217
rename_func(old, new)
221
# If the file used to exist, rename it back into place
222
# otherwise just delete it from the tmp location
224
unlink_func(tmp_name)
226
rename_func(tmp_name, new)
229
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
230
# choke on a Unicode string containing a relative path if
231
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
233
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
234
def _posix_abspath(path):
235
# jam 20060426 rather than encoding to fsencoding
236
# copy posixpath.abspath, but use os.getcwdu instead
237
if not posixpath.isabs(path):
238
path = posixpath.join(getcwd(), path)
239
return posixpath.normpath(path)
242
def _posix_realpath(path):
243
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
246
def _win32_fixdrive(path):
247
"""Force drive letters to be consistent.
249
win32 is inconsistent whether it returns lower or upper case
250
and even if it was consistent the user might type the other
251
so we force it to uppercase
252
running python.exe under cmd.exe return capital C:\\
253
running win32 python inside a cygwin shell returns lowercase c:\\
255
drive, path = _nt_splitdrive(path)
256
return drive.upper() + path
259
def _win32_abspath(path):
260
# Real _nt_abspath doesn't have a problem with a unicode cwd
261
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
264
def _win98_abspath(path):
265
"""Return the absolute version of a path.
266
Windows 98 safe implementation (python reimplementation
267
of Win32 API function GetFullPathNameW)
272
# \\HOST\path => //HOST/path
273
# //HOST/path => //HOST/path
274
# path => C:/cwd/path
277
# check for absolute path
278
drive = _nt_splitdrive(path)[0]
279
if drive == '' and path[:2] not in('//','\\\\'):
281
# we cannot simply os.path.join cwd and path
282
# because os.path.join('C:','/path') produce '/path'
283
# and this is incorrect
284
if path[:1] in ('/','\\'):
285
cwd = _nt_splitdrive(cwd)[0]
287
path = cwd + '\\' + path
288
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
290
if win32utils.winver == 'Windows 98':
291
_win32_abspath = _win98_abspath
294
def _win32_realpath(path):
295
# Real _nt_realpath doesn't have a problem with a unicode cwd
296
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
299
def _win32_pathjoin(*args):
300
return _nt_join(*args).replace('\\', '/')
303
def _win32_normpath(path):
304
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
308
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
311
def _win32_mkdtemp(*args, **kwargs):
312
return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
315
def _win32_rename(old, new):
316
"""We expect to be able to atomically replace 'new' with old.
318
On win32, if new exists, it must be moved out of the way first,
322
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
324
if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
325
# If we try to rename a non-existant file onto cwd, we get
326
# EPERM or EACCES instead of ENOENT, this will raise ENOENT
327
# if the old path doesn't exist, sometimes we get EACCES
328
# On Linux, we seem to get EBUSY, on Mac we get EINVAL
334
return unicodedata.normalize('NFKC', os.getcwdu())
337
# Default is to just use the python builtins, but these can be rebound on
338
# particular platforms.
339
abspath = _posix_abspath
340
realpath = _posix_realpath
341
pathjoin = os.path.join
342
normpath = os.path.normpath
345
dirname = os.path.dirname
346
basename = os.path.basename
347
split = os.path.split
348
splitext = os.path.splitext
349
# These were already imported into local scope
350
# mkdtemp = tempfile.mkdtemp
351
# rmtree = shutil.rmtree
353
MIN_ABS_PATHLENGTH = 1
356
if sys.platform == 'win32':
357
abspath = _win32_abspath
358
realpath = _win32_realpath
359
pathjoin = _win32_pathjoin
360
normpath = _win32_normpath
361
getcwd = _win32_getcwd
362
mkdtemp = _win32_mkdtemp
363
rename = _win32_rename
365
MIN_ABS_PATHLENGTH = 3
367
def _win32_delete_readonly(function, path, excinfo):
368
"""Error handler for shutil.rmtree function [for win32]
369
Helps to remove files and dirs marked as read-only.
371
exception = excinfo[1]
372
if function in (os.remove, os.rmdir) \
373
and isinstance(exception, OSError) \
374
and exception.errno == errno.EACCES:
380
def rmtree(path, ignore_errors=False, onerror=_win32_delete_readonly):
381
"""Replacer for shutil.rmtree: could remove readonly dirs/files"""
382
return shutil.rmtree(path, ignore_errors, onerror)
383
elif sys.platform == 'darwin':
387
def get_terminal_encoding():
388
"""Find the best encoding for printing to the screen.
390
This attempts to check both sys.stdout and sys.stdin to see
391
what encoding they are in, and if that fails it falls back to
392
bzrlib.user_encoding.
393
The problem is that on Windows, locale.getpreferredencoding()
394
is not the same encoding as that used by the console:
395
http://mail.python.org/pipermail/python-list/2003-May/162357.html
397
On my standard US Windows XP, the preferred encoding is
398
cp1252, but the console is cp437
400
output_encoding = getattr(sys.stdout, 'encoding', None)
401
if not output_encoding:
402
input_encoding = getattr(sys.stdin, 'encoding', None)
403
if not input_encoding:
404
output_encoding = bzrlib.user_encoding
405
mutter('encoding stdout as bzrlib.user_encoding %r', output_encoding)
407
output_encoding = input_encoding
408
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
410
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
411
if output_encoding == 'cp0':
412
# invalid encoding (cp0 means 'no codepage' on Windows)
413
output_encoding = bzrlib.user_encoding
414
mutter('cp0 is invalid encoding.'
415
' encoding stdout as bzrlib.user_encoding %r', output_encoding)
418
codecs.lookup(output_encoding)
420
sys.stderr.write('bzr: warning:'
421
' unknown terminal encoding %s.\n'
422
' Using encoding %s instead.\n'
423
% (output_encoding, bzrlib.user_encoding)
425
output_encoding = bzrlib.user_encoding
427
return output_encoding
430
def normalizepath(f):
431
if getattr(os.path, 'realpath', None) is not None:
435
[p,e] = os.path.split(f)
436
if e == "" or e == "." or e == "..":
439
return pathjoin(F(p), e)
80
442
def backup_file(fn):
360
615
tt = time.gmtime(t)
362
617
elif timezone == 'original':
365
620
tt = time.gmtime(t + offset)
366
621
elif timezone == 'local':
367
622
tt = time.localtime(t)
368
623
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))
625
raise errors.BzrError("unsupported timezone format %r" % timezone,
626
['options are "utc", "original", "local"'])
628
date_fmt = "%a %Y-%m-%d %H:%M:%S"
630
offset_str = ' %+03d%02d' % (offset / 3600, (offset / 60) % 60)
633
return (time.strftime(date_fmt, tt) + offset_str)
377
636
def compact_date(when):
378
637
return time.strftime('%Y%m%d%H%M%S', time.gmtime(when))
640
def format_delta(delta):
641
"""Get a nice looking string for a time delta.
643
:param delta: The time difference in seconds, can be positive or negative.
644
positive indicates time in the past, negative indicates time in the
645
future. (usually time.time() - stored_time)
646
:return: String formatted to show approximate resolution
652
direction = 'in the future'
656
if seconds < 90: # print seconds up to 90 seconds
658
return '%d second %s' % (seconds, direction,)
660
return '%d seconds %s' % (seconds, direction)
662
minutes = int(seconds / 60)
663
seconds -= 60 * minutes
668
if minutes < 90: # print minutes, seconds up to 90 minutes
670
return '%d minute, %d second%s %s' % (
671
minutes, seconds, plural_seconds, direction)
673
return '%d minutes, %d second%s %s' % (
674
minutes, seconds, plural_seconds, direction)
676
hours = int(minutes / 60)
677
minutes -= 60 * hours
684
return '%d hour, %d minute%s %s' % (hours, minutes,
685
plural_minutes, direction)
686
return '%d hours, %d minute%s %s' % (hours, minutes,
687
plural_minutes, direction)
383
690
"""Return size of given open file."""
384
691
return os.fstat(f.fileno())[ST_SIZE]
387
if hasattr(os, 'urandom'): # python 2.4 and later
694
# Define rand_bytes based on platform.
696
# Python 2.4 and later have os.urandom,
697
# but it doesn't work on some arches
388
699
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))
700
except (NotImplementedError, AttributeError):
701
# If python doesn't have os.urandom, or it doesn't work,
702
# then try to first pull random data from /dev/urandom
704
rand_bytes = file('/dev/urandom', 'rb').read
705
# Otherwise, use this hack as a last resort
706
except (IOError, OSError):
707
# not well seeded, but better than nothing
712
s += chr(random.randint(0, 255))
717
ALNUM = '0123456789abcdefghijklmnopqrstuvwxyz'
719
"""Return a random string of num alphanumeric characters
721
The result only contains lowercase chars because it may be used on
722
case-insensitive filesystems.
725
for raw_byte in rand_bytes(num):
726
s += ALNUM[ord(raw_byte) % 36]
402
730
## TODO: We could later have path objects that remember their list
403
731
## decomposition (might be too tricksy though.)
405
733
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)
734
"""Turn string into list of parts."""
735
assert isinstance(p, basestring)
423
737
# split on either delimiter because people might use either on
438
752
assert isinstance(p, list)
440
if (f == '..') or (f == None) or (f == ''):
441
raise BzrError("sorry, %r not allowed in path" % f)
442
return os.path.join(*p)
754
if (f == '..') or (f is None) or (f == ''):
755
raise errors.BzrError("sorry, %r not allowed in path" % f)
759
@deprecated_function(zero_nine)
445
760
def appendpath(p1, p2):
449
return os.path.join(p1, p2)
764
return pathjoin(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"""
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")
768
"""Split s into lines, but without removing the newline characters."""
769
lines = s.split('\n')
770
result = [line + '\n' for line in lines[:-1]]
772
result.append(lines[-1])
776
def hardlinks_good():
777
return sys.platform not in ('win32', 'cygwin', 'darwin')
780
def link_or_copy(src, dest):
781
"""Hardlink a file, or copy it if it can't be hardlinked."""
782
if not hardlinks_good():
783
shutil.copyfile(src, dest)
787
except (OSError, IOError), e:
788
if e.errno != errno.EXDEV:
790
shutil.copyfile(src, dest)
792
def delete_any(full_path):
793
"""Delete a file or directory."""
797
# We may be renaming a dangling inventory id
798
if e.errno not in (errno.EISDIR, errno.EACCES, errno.EPERM):
804
if getattr(os, 'symlink', None) is not None:
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))
810
def contains_whitespace(s):
811
"""True if there are any whitespace characters in s."""
812
# string.whitespace can include '\xa0' in certain locales, because it is
813
# considered "non-breaking-space" as part of ISO-8859-1. But it
814
# 1) Isn't a breaking whitespace
815
# 2) Isn't one of ' \t\r\n' which are characters we sometimes use as
817
# 3) '\xa0' isn't unicode safe since it is >128.
819
# This should *not* be a unicode set of characters in case the source
820
# string is not a Unicode string. We can auto-up-cast the characters since
821
# they are ascii, but we don't want to auto-up-cast the string in case it
823
for ch in ' \t\n\r\v\f':
830
def contains_linebreaks(s):
831
"""True if there is any vertical whitespace in s."""
839
def relpath(base, path):
840
"""Return path relative to base, or raise exception.
842
The path may be either an absolute path or a path relative to the
843
current working directory.
845
os.path.commonprefix (python2.4) has a bad bug that it works just
846
on string prefixes, assuming that '/u' is a prefix of '/u2'. This
850
assert len(base) >= MIN_ABS_PATHLENGTH, ('Length of base must be equal or'
851
' exceed the platform minimum length (which is %d)' %
858
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)
861
head, tail = os.path.split(head)
865
raise errors.PathNotChild(rp, base)
873
def safe_unicode(unicode_or_utf8_string):
874
"""Coerce unicode_or_utf8_string into unicode.
876
If it is unicode, it is returned.
877
Otherwise it is decoded from utf-8. If a decoding error
878
occurs, it is wrapped as a If the decoding fails, the exception is wrapped
879
as a BzrBadParameter exception.
881
if isinstance(unicode_or_utf8_string, unicode):
882
return unicode_or_utf8_string
884
return unicode_or_utf8_string.decode('utf8')
885
except UnicodeDecodeError:
886
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
889
def safe_utf8(unicode_or_utf8_string):
890
"""Coerce unicode_or_utf8_string to a utf8 string.
892
If it is a str, it is returned.
893
If it is Unicode, it is encoded into a utf-8 string.
895
if isinstance(unicode_or_utf8_string, str):
896
# TODO: jam 20070209 This is overkill, and probably has an impact on
897
# performance if we are dealing with lots of apis that want a
900
# Make sure it is a valid utf-8 string
901
unicode_or_utf8_string.decode('utf-8')
902
except UnicodeDecodeError:
903
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
904
return unicode_or_utf8_string
905
return unicode_or_utf8_string.encode('utf-8')
908
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
909
' Revision id generators should be creating utf8'
913
def safe_revision_id(unicode_or_utf8_string, warn=True):
914
"""Revision ids should now be utf8, but at one point they were unicode.
916
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
918
:param warn: Functions that are sanitizing user data can set warn=False
919
:return: None or a utf8 revision id.
921
if (unicode_or_utf8_string is None
922
or unicode_or_utf8_string.__class__ == str):
923
return unicode_or_utf8_string
925
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
927
return cache_utf8.encode(unicode_or_utf8_string)
930
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
931
' generators should be creating utf8 file ids.')
934
def safe_file_id(unicode_or_utf8_string, warn=True):
935
"""File ids should now be utf8, but at one point they were unicode.
937
This is the same as safe_utf8, except it uses the cached encode functions
938
to save a little bit of performance.
940
:param unicode_or_utf8_string: A possibly Unicode file_id. (can also be
942
:param warn: Functions that are sanitizing user data can set warn=False
943
:return: None or a utf8 file id.
945
if (unicode_or_utf8_string is None
946
or unicode_or_utf8_string.__class__ == str):
947
return unicode_or_utf8_string
949
symbol_versioning.warn(_file_id_warning, DeprecationWarning,
951
return cache_utf8.encode(unicode_or_utf8_string)
954
_platform_normalizes_filenames = False
955
if sys.platform == 'darwin':
956
_platform_normalizes_filenames = True
959
def normalizes_filenames():
960
"""Return True if this platform normalizes unicode filenames.
962
Mac OSX does, Windows/Linux do not.
964
return _platform_normalizes_filenames
967
def _accessible_normalized_filename(path):
968
"""Get the unicode normalized path, and if you can access the file.
970
On platforms where the system normalizes filenames (Mac OSX),
971
you can access a file by any path which will normalize correctly.
972
On platforms where the system does not normalize filenames
973
(Windows, Linux), you have to access a file by its exact path.
975
Internally, bzr only supports NFC/NFKC normalization, since that is
976
the standard for XML documents.
978
So return the normalized path, and a flag indicating if the file
979
can be accessed by that path.
982
return unicodedata.normalize('NFKC', unicode(path)), True
985
def _inaccessible_normalized_filename(path):
986
__doc__ = _accessible_normalized_filename.__doc__
988
normalized = unicodedata.normalize('NFKC', unicode(path))
989
return normalized, normalized == path
992
if _platform_normalizes_filenames:
993
normalized_filename = _accessible_normalized_filename
995
normalized_filename = _inaccessible_normalized_filename
998
def terminal_width():
999
"""Return estimated terminal width."""
1000
if sys.platform == 'win32':
1001
return win32utils.get_console_size()[0]
1004
import struct, fcntl, termios
1005
s = struct.pack('HHHH', 0, 0, 0, 0)
1006
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1007
width = struct.unpack('HHHH', x)[1]
1012
width = int(os.environ['COLUMNS'])
1021
def supports_executable():
1022
return sys.platform != "win32"
1025
def supports_posix_readonly():
1026
"""Return True if 'readonly' has POSIX semantics, False otherwise.
1028
Notably, a win32 readonly file cannot be deleted, unlike POSIX where the
1029
directory controls creation/deletion, etc.
1031
And under win32, readonly means that the directory itself cannot be
1032
deleted. The contents of a readonly directory can be changed, unlike POSIX
1033
where files in readonly directories cannot be added, deleted or renamed.
1035
return sys.platform != "win32"
1038
def set_or_unset_env(env_variable, value):
1039
"""Modify the environment, setting or removing the env_variable.
1041
:param env_variable: The environment variable in question
1042
:param value: The value to set the environment to. If None, then
1043
the variable will be removed.
1044
:return: The original value of the environment variable.
1046
orig_val = os.environ.get(env_variable)
1048
if orig_val is not None:
1049
del os.environ[env_variable]
1051
if isinstance(value, unicode):
1052
value = value.encode(bzrlib.user_encoding)
1053
os.environ[env_variable] = value
1057
_validWin32PathRE = re.compile(r'^([A-Za-z]:[/\\])?[^:<>*"?\|]*$')
1060
def check_legal_path(path):
1061
"""Check whether the supplied path is legal.
1062
This is only required on Windows, so we don't test on other platforms
1065
if sys.platform != "win32":
1067
if _validWin32PathRE.match(path) is None:
1068
raise errors.IllegalPath(path)
1071
def walkdirs(top, prefix=""):
1072
"""Yield data about all the directories in a tree.
1074
This yields all the data about the contents of a directory at a time.
1075
After each directory has been yielded, if the caller has mutated the list
1076
to exclude some directories, they are then not descended into.
1078
The data yielded is of the form:
1079
((directory-relpath, directory-path-from-top),
1080
[(relpath, basename, kind, lstat), ...]),
1081
- directory-relpath is the relative path of the directory being returned
1082
with respect to top. prefix is prepended to this.
1083
- directory-path-from-root is the path including top for this directory.
1084
It is suitable for use with os functions.
1085
- relpath is the relative path within the subtree being walked.
1086
- basename is the basename of the path
1087
- kind is the kind of the file now. If unknown then the file is not
1088
present within the tree - but it may be recorded as versioned. See
1090
- lstat is the stat data *if* the file was statted.
1091
- planned, not implemented:
1092
path_from_tree_root is the path from the root of the tree.
1094
:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
1095
allows one to walk a subtree but get paths that are relative to a tree
1097
:return: an iterator over the dirs.
1099
#TODO there is a bit of a smell where the results of the directory-
1100
# summary in this, and the path from the root, may not agree
1101
# depending on top and prefix - i.e. ./foo and foo as a pair leads to
1102
# potentially confusing output. We should make this more robust - but
1103
# not at a speed cost. RBC 20060731
1106
_directory = _directory_kind
1107
_listdir = os.listdir
1108
pending = [(prefix, "", _directory, None, top)]
1111
currentdir = pending.pop()
1112
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1115
relroot = currentdir[0] + '/'
1118
for name in sorted(_listdir(top)):
1119
abspath = top + '/' + name
1120
statvalue = lstat(abspath)
1121
dirblock.append((relroot + name, name,
1122
file_kind_from_stat_mode(statvalue.st_mode),
1123
statvalue, abspath))
1124
yield (currentdir[0], top), dirblock
1125
# push the user specified dirs from dirblock
1126
for dir in reversed(dirblock):
1127
if dir[2] == _directory:
1131
def copy_tree(from_path, to_path, handlers={}):
1132
"""Copy all of the entries in from_path into to_path.
1134
:param from_path: The base directory to copy.
1135
:param to_path: The target directory. If it does not exist, it will
1137
:param handlers: A dictionary of functions, which takes a source and
1138
destinations for files, directories, etc.
1139
It is keyed on the file kind, such as 'directory', 'symlink', or 'file'
1140
'file', 'directory', and 'symlink' should always exist.
1141
If they are missing, they will be replaced with 'os.mkdir()',
1142
'os.readlink() + os.symlink()', and 'shutil.copy2()', respectively.
1144
# Now, just copy the existing cached tree to the new location
1145
# We use a cheap trick here.
1146
# Absolute paths are prefixed with the first parameter
1147
# relative paths are prefixed with the second.
1148
# So we can get both the source and target returned
1149
# without any extra work.
1151
def copy_dir(source, dest):
1154
def copy_link(source, dest):
1155
"""Copy the contents of a symlink"""
1156
link_to = os.readlink(source)
1157
os.symlink(link_to, dest)
1159
real_handlers = {'file':shutil.copy2,
1160
'symlink':copy_link,
1161
'directory':copy_dir,
1163
real_handlers.update(handlers)
1165
if not os.path.exists(to_path):
1166
real_handlers['directory'](from_path, to_path)
1168
for dir_info, entries in walkdirs(from_path, prefix=to_path):
1169
for relpath, name, kind, st, abspath in entries:
1170
real_handlers[kind](abspath, relpath)
1173
def path_prefix_key(path):
1174
"""Generate a prefix-order path key for path.
1176
This can be used to sort paths in the same way that walkdirs does.
1178
return (dirname(path) , path)
1181
def compare_paths_prefix_order(path_a, path_b):
1182
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1183
key_a = path_prefix_key(path_a)
1184
key_b = path_prefix_key(path_b)
1185
return cmp(key_a, key_b)
1188
_cached_user_encoding = None
1191
def get_user_encoding(use_cache=True):
1192
"""Find out what the preferred user encoding is.
1194
This is generally the encoding that is used for command line parameters
1195
and file contents. This may be different from the terminal encoding
1196
or the filesystem encoding.
1198
:param use_cache: Enable cache for detected encoding.
1199
(This parameter is turned on by default,
1200
and required only for selftesting)
1202
:return: A string defining the preferred user encoding
1204
global _cached_user_encoding
1205
if _cached_user_encoding is not None and use_cache:
1206
return _cached_user_encoding
1208
if sys.platform == 'darwin':
1209
# work around egregious python 2.4 bug
1210
sys.platform = 'posix'
1214
sys.platform = 'darwin'
1219
user_encoding = locale.getpreferredencoding()
1220
except locale.Error, e:
1221
sys.stderr.write('bzr: warning: %s\n'
1222
' Could not determine what text encoding to use.\n'
1223
' This error usually means your Python interpreter\n'
1224
' doesn\'t support the locale set by $LANG (%s)\n'
1225
" Continuing with ascii encoding.\n"
1226
% (e, os.environ.get('LANG')))
1227
user_encoding = 'ascii'
1229
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1230
# treat that as ASCII, and not support printing unicode characters to the
1232
if user_encoding in (None, 'cp0'):
1233
user_encoding = 'ascii'
1237
codecs.lookup(user_encoding)
1239
sys.stderr.write('bzr: warning:'
1240
' unknown encoding %s.'
1241
' Continuing with ascii encoding.\n'
1244
user_encoding = 'ascii'
1247
_cached_user_encoding = user_encoding
1249
return user_encoding
1252
def recv_all(socket, bytes):
1253
"""Receive an exact number of bytes.
1255
Regular Socket.recv() may return less than the requested number of bytes,
1256
dependning on what's in the OS buffer. MSG_WAITALL is not available
1257
on all platforms, but this should work everywhere. This will return
1258
less than the requested amount if the remote end closes.
1260
This isn't optimized and is intended mostly for use in testing.
1263
while len(b) < bytes:
1264
new = socket.recv(bytes - len(b))
1270
def dereference_path(path):
1271
"""Determine the real path to a file.
1273
All parent elements are dereferenced. But the file itself is not
1275
:param path: The original path. May be absolute or relative.
1276
:return: the real path *to* the file
1278
parent, base = os.path.split(path)
1279
# The pathjoin for '.' is a workaround for Python bug #1213894.
1280
# (initial path components aren't dereferenced)
1281
return pathjoin(realpath(pathjoin('.', parent)), base)
added
removed
bzrlib/osutils.py
