68
77
# OR with 0 on those platforms
69
78
O_BINARY = getattr(os, 'O_BINARY', 0)
71
# On posix, use lstat instead of stat so that we can
72
# operate on broken symlinks. On Windows revert to stat.
73
lstat = getattr(os, 'lstat', os.stat)
81
def get_unicode_argv():
83
user_encoding = get_user_encoding()
84
return [a.decode(user_encoding) for a in sys.argv[1:]]
85
except UnicodeDecodeError:
86
raise errors.BzrError(("Parameter '%r' is unsupported by the current "
75
90
def make_readonly(filename):
76
91
"""Make a filename read-only."""
77
mod = lstat(filename).st_mode
92
mod = os.lstat(filename).st_mode
78
93
if not stat.S_ISLNK(mod):
79
94
mod = mod & 0777555
80
95
os.chmod(filename, mod)
83
98
def make_writable(filename):
84
mod = lstat(filename).st_mode
99
mod = os.lstat(filename).st_mode
85
100
if not stat.S_ISLNK(mod):
87
102
os.chmod(filename, mod)
105
def minimum_path_selection(paths):
106
"""Return the smallset subset of paths which are outside paths.
108
:param paths: A container (and hence not None) of paths.
109
:return: A set of paths sufficient to include everything in paths via
110
is_inside, drawn from the paths parameter.
116
return path.split('/')
117
sorted_paths = sorted(list(paths), key=sort_key)
119
search_paths = [sorted_paths[0]]
120
for path in sorted_paths[1:]:
121
if not is_inside(search_paths[-1], path):
122
# This path is unique, add it
123
search_paths.append(path)
125
return set(search_paths)
323
333
"""We expect to be able to atomically replace 'new' with old.
325
335
On win32, if new exists, it must be moved out of the way first,
329
339
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
330
340
except OSError, e:
331
341
if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
332
# If we try to rename a non-existant file onto cwd, we get
333
# EPERM or EACCES instead of ENOENT, this will raise ENOENT
342
# If we try to rename a non-existant file onto cwd, we get
343
# EPERM or EACCES instead of ENOENT, this will raise ENOENT
334
344
# if the old path doesn't exist, sometimes we get EACCES
335
345
# On Linux, we seem to get EBUSY, on Mac we get EINVAL
539
def pumpfile(fromfile, tofile):
540
"""Copy contents of one file to another."""
543
b = fromfile.read(BUFSIZE)
532
def pumpfile(from_file, to_file, read_length=-1, buff_size=32768,
533
report_activity=None, direction='read'):
534
"""Copy contents of one file to another.
536
The read_length can either be -1 to read to end-of-file (EOF) or
537
it can specify the maximum number of bytes to read.
539
The buff_size represents the maximum size for each read operation
540
performed on from_file.
542
:param report_activity: Call this as bytes are read, see
543
Transport._report_activity
544
:param direction: Will be passed to report_activity
546
:return: The number of bytes copied.
550
# read specified number of bytes
552
while read_length > 0:
553
num_bytes_to_read = min(read_length, buff_size)
555
block = from_file.read(num_bytes_to_read)
559
if report_activity is not None:
560
report_activity(len(block), direction)
563
actual_bytes_read = len(block)
564
read_length -= actual_bytes_read
565
length += actual_bytes_read
569
block = from_file.read(buff_size)
573
if report_activity is not None:
574
report_activity(len(block), direction)
580
def pump_string_file(bytes, file_handle, segment_size=None):
581
"""Write bytes to file_handle in many smaller writes.
583
:param bytes: The string to write.
584
:param file_handle: The file to write to.
586
# Write data in chunks rather than all at once, because very large
587
# writes fail on some platforms (e.g. Windows with SMB mounted
590
segment_size = 5242880 # 5MB
591
segments = range(len(bytes) / segment_size + 1)
592
write = file_handle.write
593
for segment_index in segments:
594
segment = buffer(bytes, segment_index * segment_size, segment_size)
549
598
def file_iterator(input_file, readsize=32768):
619
697
:param timezone: How to display the time: 'utc', 'original' for the
620
698
timezone specified by offset, or 'local' for the process's current
622
:param show_offset: Whether to append the timezone.
623
:param date_fmt: strftime format.
700
:param date_fmt: strftime format.
701
:param show_offset: Whether to append the timezone.
703
(date_fmt, tt, offset_str) = \
704
_format_date(t, offset, timezone, date_fmt, show_offset)
705
date_fmt = date_fmt.replace('%a', weekdays[tt[6]])
706
date_str = time.strftime(date_fmt, tt)
707
return date_str + offset_str
709
def format_local_date(t, offset=0, timezone='original', date_fmt=None,
711
"""Return an unicode date string formatted according to the current locale.
713
:param t: Seconds since the epoch.
714
:param offset: Timezone offset in seconds east of utc.
715
:param timezone: How to display the time: 'utc', 'original' for the
716
timezone specified by offset, or 'local' for the process's current
718
:param date_fmt: strftime format.
719
:param show_offset: Whether to append the timezone.
721
(date_fmt, tt, offset_str) = \
722
_format_date(t, offset, timezone, date_fmt, show_offset)
723
date_str = time.strftime(date_fmt, tt)
724
if not isinstance(date_str, unicode):
725
date_str = date_str.decode(get_user_encoding(), 'replace')
726
return date_str + offset_str
728
def _format_date(t, offset, timezone, date_fmt, show_offset):
625
729
if timezone == 'utc':
626
730
tt = time.gmtime(t)
763
assert isinstance(p, (list, tuple))
765
866
if (f == '..') or (f is None) or (f == ''):
766
867
raise errors.BzrError("sorry, %r not allowed in path" % f)
767
868
return pathjoin(*p)
871
def parent_directories(filename):
872
"""Return the list of parent directories, deepest first.
874
For example, parent_directories("a/b/c") -> ["a/b", "a"].
877
parts = splitpath(dirname(filename))
879
parents.append(joinpath(parts))
885
from bzrlib._chunks_to_lines_pyx import chunks_to_lines
887
from bzrlib._chunks_to_lines_py import chunks_to_lines
770
890
def split_lines(s):
771
891
"""Split s into lines, but without removing the newline characters."""
892
# Trivially convert a fulltext into a 'chunked' representation, and let
893
# chunks_to_lines do the heavy lifting.
894
if isinstance(s, str):
895
# chunks_to_lines only supports 8-bit strings
896
return chunks_to_lines([s])
898
return _split_lines(s)
902
"""Split s into lines, but without removing the newline characters.
904
This supports Unicode or plain string objects.
772
906
lines = s.split('\n')
773
907
result = [line + '\n' for line in lines[:-1]]
793
927
shutil.copyfile(src, dest)
795
def delete_any(full_path):
796
"""Delete a file or directory."""
930
def delete_any(path):
931
"""Delete a file, symlink or directory.
933
Will delete even if readonly.
800
# We may be renaming a dangling inventory id
801
if e.errno not in (errno.EISDIR, errno.EACCES, errno.EPERM):
936
_delete_file_or_dir(path)
937
except (OSError, IOError), e:
938
if e.errno in (errno.EPERM, errno.EACCES):
939
# make writable and try again
942
except (OSError, IOError):
944
_delete_file_or_dir(path)
949
def _delete_file_or_dir(path):
950
# Look Before You Leap (LBYL) is appropriate here instead of Easier to Ask for
951
# Forgiveness than Permission (EAFP) because:
952
# - root can damage a solaris file system by using unlink,
953
# - unlink raises different exceptions on different OSes (linux: EISDIR, win32:
954
# EACCES, OSX: EPERM) when invoked on a directory.
955
if isdir(path): # Takes care of symlinks
806
961
def has_symlinks():
850
1031
avoids that problem.
853
assert len(base) >= MIN_ABS_PATHLENGTH, ('Length of base must be equal or'
854
' exceed the platform minimum length (which is %d)' %
1034
if len(base) < MIN_ABS_PATHLENGTH:
1035
# must have space for e.g. a drive letter
1036
raise ValueError('%r is too short to calculate a relative path'
857
1039
rp = abspath(path)
861
while len(head) >= len(base):
1044
if len(head) <= len(base) and head != base:
1045
raise errors.PathNotChild(rp, base)
862
1046
if head == base:
864
head, tail = os.path.split(head)
1048
head, tail = split(head)
868
raise errors.PathNotChild(rp, base)
1053
return pathjoin(*reversed(s))
1058
def _cicp_canonical_relpath(base, path):
1059
"""Return the canonical path relative to base.
1061
Like relpath, but on case-insensitive-case-preserving file-systems, this
1062
will return the relpath as stored on the file-system rather than in the
1063
case specified in the input string, for all existing portions of the path.
1065
This will cause O(N) behaviour if called for every path in a tree; if you
1066
have a number of paths to convert, you should use canonical_relpaths().
1068
# TODO: it should be possible to optimize this for Windows by using the
1069
# win32 API FindFiles function to look for the specified name - but using
1070
# os.listdir() still gives us the correct, platform agnostic semantics in
1073
rel = relpath(base, path)
1074
# '.' will have been turned into ''
1078
abs_base = abspath(base)
1080
_listdir = os.listdir
1082
# use an explicit iterator so we can easily consume the rest on early exit.
1083
bit_iter = iter(rel.split('/'))
1084
for bit in bit_iter:
1087
next_entries = _listdir(current)
1088
except OSError: # enoent, eperm, etc
1089
# We can't find this in the filesystem, so just append the
1091
current = pathjoin(current, bit, *list(bit_iter))
1093
for look in next_entries:
1094
if lbit == look.lower():
1095
current = pathjoin(current, look)
1098
# got to the end, nothing matched, so we just return the
1099
# non-existing bits as they were specified (the filename may be
1100
# the target of a move, for example).
1101
current = pathjoin(current, bit, *list(bit_iter))
1103
return current[len(abs_base):].lstrip('/')
1105
# XXX - TODO - we need better detection/integration of case-insensitive
1106
# file-systems; Linux often sees FAT32 devices (or NFS-mounted OSX
1107
# filesystems), for example, so could probably benefit from the same basic
1108
# support there. For now though, only Windows and OSX get that support, and
1109
# they get it for *all* file-systems!
1110
if sys.platform in ('win32', 'darwin'):
1111
canonical_relpath = _cicp_canonical_relpath
1113
canonical_relpath = relpath
1115
def canonical_relpaths(base, paths):
1116
"""Create an iterable to canonicalize a sequence of relative paths.
1118
The intent is for this implementation to use a cache, vastly speeding
1119
up multiple transformations in the same directory.
1121
# but for now, we haven't optimized...
1122
return [canonical_relpath(base, p) for p in paths]
876
1124
def safe_unicode(unicode_or_utf8_string):
877
1125
"""Coerce unicode_or_utf8_string into unicode.
879
1127
If it is unicode, it is returned.
880
Otherwise it is decoded from utf-8. If a decoding error
881
occurs, it is wrapped as a If the decoding fails, the exception is wrapped
882
as a BzrBadParameter exception.
1128
Otherwise it is decoded from utf-8. If decoding fails, the exception is
1129
wrapped in a BzrBadParameterNotUnicode exception.
884
1131
if isinstance(unicode_or_utf8_string, unicode):
885
1132
return unicode_or_utf8_string
973
1220
On platforms where the system normalizes filenames (Mac OSX),
974
1221
you can access a file by any path which will normalize correctly.
975
On platforms where the system does not normalize filenames
1222
On platforms where the system does not normalize filenames
976
1223
(Windows, Linux), you have to access a file by its exact path.
978
Internally, bzr only supports NFC/NFKC normalization, since that is
1225
Internally, bzr only supports NFC normalization, since that is
979
1226
the standard for XML documents.
981
1228
So return the normalized path, and a flag indicating if the file
982
1229
can be accessed by that path.
985
return unicodedata.normalize('NFKC', unicode(path)), True
1232
return unicodedata.normalize('NFC', unicode(path)), True
988
1235
def _inaccessible_normalized_filename(path):
989
1236
__doc__ = _accessible_normalized_filename.__doc__
991
normalized = unicodedata.normalize('NFKC', unicode(path))
1238
normalized = unicodedata.normalize('NFC', unicode(path))
992
1239
return normalized, normalized == path
1071
1318
raise errors.IllegalPath(path)
1321
_WIN32_ERROR_DIRECTORY = 267 # Similar to errno.ENOTDIR
1323
def _is_error_enotdir(e):
1324
"""Check if this exception represents ENOTDIR.
1326
Unfortunately, python is very inconsistent about the exception
1327
here. The cases are:
1328
1) Linux, Mac OSX all versions seem to set errno == ENOTDIR
1329
2) Windows, Python2.4, uses errno == ERROR_DIRECTORY (267)
1330
which is the windows error code.
1331
3) Windows, Python2.5 uses errno == EINVAL and
1332
winerror == ERROR_DIRECTORY
1334
:param e: An Exception object (expected to be OSError with an errno
1335
attribute, but we should be able to cope with anything)
1336
:return: True if this represents an ENOTDIR error. False otherwise.
1338
en = getattr(e, 'errno', None)
1339
if (en == errno.ENOTDIR
1340
or (sys.platform == 'win32'
1341
and (en == _WIN32_ERROR_DIRECTORY
1342
or (en == errno.EINVAL
1343
and getattr(e, 'winerror', None) == _WIN32_ERROR_DIRECTORY)
1074
1349
def walkdirs(top, prefix=""):
1075
1350
"""Yield data about all the directories in a tree.
1077
1352
This yields all the data about the contents of a directory at a time.
1078
1353
After each directory has been yielded, if the caller has mutated the list
1079
1354
to exclude some directories, they are then not descended into.
1081
1356
The data yielded is of the form:
1082
1357
((directory-relpath, directory-path-from-top),
1083
1358
[(relpath, basename, kind, lstat, path-from-top), ...]),
1084
1359
- directory-relpath is the relative path of the directory being returned
1085
1360
with respect to top. prefix is prepended to this.
1086
- directory-path-from-root is the path including top for this directory.
1361
- directory-path-from-root is the path including top for this directory.
1087
1362
It is suitable for use with os functions.
1088
1363
- relpath is the relative path within the subtree being walked.
1089
1364
- basename is the basename of the path
1091
1366
present within the tree - but it may be recorded as versioned. See
1092
1367
versioned_kind.
1093
1368
- lstat is the stat data *if* the file was statted.
1094
- planned, not implemented:
1369
- planned, not implemented:
1095
1370
path_from_tree_root is the path from the root of the tree.
1097
:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
1372
:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
1098
1373
allows one to walk a subtree but get paths that are relative to a tree
1099
1374
rooted higher up.
1100
1375
:return: an iterator over the dirs.
1102
1377
#TODO there is a bit of a smell where the results of the directory-
1103
# summary in this, and the path from the root, may not agree
1378
# summary in this, and the path from the root, may not agree
1104
1379
# depending on top and prefix - i.e. ./foo and foo as a pair leads to
1105
1380
# potentially confusing output. We should make this more robust - but
1106
1381
# not at a speed cost. RBC 20060731
1107
1382
_lstat = os.lstat
1108
1383
_directory = _directory_kind
1109
1384
_listdir = os.listdir
1110
_kind_from_mode = _formats.get
1385
_kind_from_mode = file_kind_from_stat_mode
1111
1386
pending = [(safe_unicode(prefix), "", _directory, None, safe_unicode(top))]
1113
1388
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1122
1397
append = dirblock.append
1123
for name in sorted(_listdir(top)):
1124
abspath = top_slash + name
1125
statvalue = _lstat(abspath)
1126
kind = _kind_from_mode(statvalue.st_mode & 0170000, 'unknown')
1127
append((relprefix + name, name, kind, statvalue, abspath))
1399
names = sorted(_listdir(top))
1401
if not _is_error_enotdir(e):
1405
abspath = top_slash + name
1406
statvalue = _lstat(abspath)
1407
kind = _kind_from_mode(statvalue.st_mode)
1408
append((relprefix + name, name, kind, statvalue, abspath))
1128
1409
yield (relroot, top), dirblock
1130
1411
# push the user specified dirs from dirblock
1131
1412
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1415
class DirReader(object):
1416
"""An interface for reading directories."""
1418
def top_prefix_to_starting_dir(self, top, prefix=""):
1419
"""Converts top and prefix to a starting dir entry
1421
:param top: A utf8 path
1422
:param prefix: An optional utf8 path to prefix output relative paths
1424
:return: A tuple starting with prefix, and ending with the native
1427
raise NotImplementedError(self.top_prefix_to_starting_dir)
1429
def read_dir(self, prefix, top):
1430
"""Read a specific dir.
1432
:param prefix: A utf8 prefix to be preprended to the path basenames.
1433
:param top: A natively encoded path to read.
1434
:return: A list of the directories contents. Each item contains:
1435
(utf8_relpath, utf8_name, kind, lstatvalue, native_abspath)
1437
raise NotImplementedError(self.read_dir)
1440
_selected_dir_reader = None
1134
1443
def _walkdirs_utf8(top, prefix=""):
1135
1444
"""Yield data about all the directories in a tree.
1145
1454
path-from-top might be unicode or utf8, but it is the correct path to
1146
1455
pass to os functions to affect the file in question. (such as os.lstat)
1148
fs_encoding = _fs_enc.upper()
1149
if (sys.platform == 'win32' or
1150
fs_encoding not in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968')): # ascii
1151
return _walkdirs_unicode_to_utf8(top, prefix=prefix)
1153
return _walkdirs_fs_utf8(top, prefix=prefix)
1156
def _walkdirs_fs_utf8(top, prefix=""):
1157
"""See _walkdirs_utf8.
1159
This sub-function is called when we know the filesystem is already in utf8
1160
encoding. So we don't need to transcode filenames.
1163
_directory = _directory_kind
1164
_listdir = os.listdir
1165
_kind_from_mode = _formats.get
1457
global _selected_dir_reader
1458
if _selected_dir_reader is None:
1459
fs_encoding = _fs_enc.upper()
1460
if sys.platform == "win32" and win32utils.winver == 'Windows NT':
1461
# Win98 doesn't have unicode apis like FindFirstFileW
1462
# TODO: We possibly could support Win98 by falling back to the
1463
# original FindFirstFile, and using TCHAR instead of WCHAR,
1464
# but that gets a bit tricky, and requires custom compiling
1467
from bzrlib._walkdirs_win32 import Win32ReadDir
1468
_selected_dir_reader = Win32ReadDir()
1471
elif fs_encoding in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1472
# ANSI_X3.4-1968 is a form of ASCII
1474
from bzrlib._readdir_pyx import UTF8DirReader
1475
_selected_dir_reader = UTF8DirReader()
1479
if _selected_dir_reader is None:
1480
# Fallback to the python version
1481
_selected_dir_reader = UnicodeDirReader()
1167
1483
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1168
1484
# But we don't actually uses 1-3 in pending, so set them to None
1169
pending = [(safe_utf8(prefix), None, None, None, safe_utf8(top))]
1485
pending = [[_selected_dir_reader.top_prefix_to_starting_dir(top, prefix)]]
1486
read_dir = _selected_dir_reader.read_dir
1487
_directory = _directory_kind
1171
relroot, _, _, _, top = pending.pop()
1173
relprefix = relroot + '/'
1176
top_slash = top + '/'
1179
append = dirblock.append
1180
for name in sorted(_listdir(top)):
1181
abspath = top_slash + name
1182
statvalue = _lstat(abspath)
1183
kind = _kind_from_mode(statvalue.st_mode & 0170000, 'unknown')
1184
append((relprefix + name, name, kind, statvalue, abspath))
1489
relroot, _, _, _, top = pending[-1].pop()
1492
dirblock = sorted(read_dir(relroot, top))
1185
1493
yield (relroot, top), dirblock
1187
1494
# push the user specified dirs from dirblock
1188
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1191
def _walkdirs_unicode_to_utf8(top, prefix=""):
1192
"""See _walkdirs_utf8
1194
Because Win32 has a Unicode api, all of the 'path-from-top' entries will be
1196
This is currently the fallback code path when the filesystem encoding is
1197
not UTF-8. It may be better to implement an alternative so that we can
1198
safely handle paths that are not properly decodable in the current
1201
_utf8_encode = codecs.getencoder('utf8')
1203
_directory = _directory_kind
1204
_listdir = os.listdir
1205
_kind_from_mode = _formats.get
1207
pending = [(safe_utf8(prefix), None, None, None, safe_unicode(top))]
1209
relroot, _, _, _, top = pending.pop()
1211
relprefix = relroot + '/'
1495
next = [d for d in reversed(dirblock) if d[2] == _directory]
1497
pending.append(next)
1500
class UnicodeDirReader(DirReader):
1501
"""A dir reader for non-utf8 file systems, which transcodes."""
1503
__slots__ = ['_utf8_encode']
1506
self._utf8_encode = codecs.getencoder('utf8')
1508
def top_prefix_to_starting_dir(self, top, prefix=""):
1509
"""See DirReader.top_prefix_to_starting_dir."""
1510
return (safe_utf8(prefix), None, None, None, safe_unicode(top))
1512
def read_dir(self, prefix, top):
1513
"""Read a single directory from a non-utf8 file system.
1515
top, and the abspath element in the output are unicode, all other paths
1516
are utf8. Local disk IO is done via unicode calls to listdir etc.
1518
This is currently the fallback code path when the filesystem encoding is
1519
not UTF-8. It may be better to implement an alternative so that we can
1520
safely handle paths that are not properly decodable in the current
1523
See DirReader.read_dir for details.
1525
_utf8_encode = self._utf8_encode
1527
_listdir = os.listdir
1528
_kind_from_mode = file_kind_from_stat_mode
1531
relprefix = prefix + '/'
1214
1534
top_slash = top + u'/'
1217
1537
append = dirblock.append
1218
1538
for name in sorted(_listdir(top)):
1219
name_utf8 = _utf8_encode(name)[0]
1540
name_utf8 = _utf8_encode(name)[0]
1541
except UnicodeDecodeError:
1542
raise errors.BadFilenameEncoding(
1543
_utf8_encode(relprefix)[0] + name, _fs_enc)
1220
1544
abspath = top_slash + name
1221
1545
statvalue = _lstat(abspath)
1222
kind = _kind_from_mode(statvalue.st_mode & 0170000, 'unknown')
1546
kind = _kind_from_mode(statvalue.st_mode)
1223
1547
append((relprefix + name_utf8, name_utf8, kind, statvalue, abspath))
1224
yield (relroot, top), dirblock
1226
# push the user specified dirs from dirblock
1227
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1230
1551
def copy_tree(from_path, to_path, handlers={}):
1231
1552
"""Copy all of the entries in from_path into to_path.
1233
:param from_path: The base directory to copy.
1554
:param from_path: The base directory to copy.
1234
1555
:param to_path: The target directory. If it does not exist, it will
1236
1557
:param handlers: A dictionary of functions, which takes a source and
1362
1709
while len(b) < bytes:
1363
new = socket.recv(bytes - len(b))
1710
new = until_no_eintr(socket.recv, bytes - len(b))
1717
def send_all(socket, bytes, report_activity=None):
1718
"""Send all bytes on a socket.
1720
Regular socket.sendall() can give socket error 10053 on Windows. This
1721
implementation sends no more than 64k at a time, which avoids this problem.
1723
:param report_activity: Call this as bytes are read, see
1724
Transport._report_activity
1727
for pos in xrange(0, len(bytes), chunk_size):
1728
block = bytes[pos:pos+chunk_size]
1729
if report_activity is not None:
1730
report_activity(len(block), 'write')
1731
until_no_eintr(socket.sendall, block)
1369
1734
def dereference_path(path):
1370
1735
"""Determine the real path to a file.
1383
1748
def supports_mapi():
1384
1749
"""Return True if we can use MAPI to launch a mail client."""
1385
1750
return sys.platform == "win32"
1753
def resource_string(package, resource_name):
1754
"""Load a resource from a package and return it as a string.
1756
Note: Only packages that start with bzrlib are currently supported.
1758
This is designed to be a lightweight implementation of resource
1759
loading in a way which is API compatible with the same API from
1761
http://peak.telecommunity.com/DevCenter/PkgResources#basic-resource-access.
1762
If and when pkg_resources becomes a standard library, this routine
1765
# Check package name is within bzrlib
1766
if package == "bzrlib":
1767
resource_relpath = resource_name
1768
elif package.startswith("bzrlib."):
1769
package = package[len("bzrlib."):].replace('.', os.sep)
1770
resource_relpath = pathjoin(package, resource_name)
1772
raise errors.BzrError('resource package %s not in bzrlib' % package)
1774
# Map the resource to a file and read its contents
1775
base = dirname(bzrlib.__file__)
1776
if getattr(sys, 'frozen', None): # bzr.exe
1777
base = abspath(pathjoin(base, '..', '..'))
1778
filename = pathjoin(base, resource_relpath)
1779
return open(filename, 'rU').read()
1782
def file_kind_from_stat_mode_thunk(mode):
1783
global file_kind_from_stat_mode
1784
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
1786
from bzrlib._readdir_pyx import UTF8DirReader
1787
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
1789
from bzrlib._readdir_py import (
1790
_kind_from_mode as file_kind_from_stat_mode
1792
return file_kind_from_stat_mode(mode)
1793
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
1796
def file_kind(f, _lstat=os.lstat):
1798
return file_kind_from_stat_mode(_lstat(f).st_mode)
1800
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
1801
raise errors.NoSuchFile(f)
1805
def until_no_eintr(f, *a, **kw):
1806
"""Run f(*a, **kw), retrying if an EINTR error occurs."""
1807
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
1811
except (IOError, OSError), e:
1812
if e.errno == errno.EINTR:
1816
def re_compile_checked(re_string, flags=0, where=""):
1817
"""Return a compiled re, or raise a sensible error.
1819
This should only be used when compiling user-supplied REs.
1821
:param re_string: Text form of regular expression.
1822
:param flags: eg re.IGNORECASE
1823
:param where: Message explaining to the user the context where
1824
it occurred, eg 'log search filter'.
1826
# from https://bugs.launchpad.net/bzr/+bug/251352
1828
re_obj = re.compile(re_string, flags)
1833
where = ' in ' + where
1834
# despite the name 'error' is a type
1835
raise errors.BzrCommandError('Invalid regular expression%s: %r: %s'
1836
% (where, re_string, e))
1839
if sys.platform == "win32":
1842
return msvcrt.getch()
1847
fd = sys.stdin.fileno()
1848
settings = termios.tcgetattr(fd)
1851
ch = sys.stdin.read(1)
1853
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
1857
if sys.platform == 'linux2':
1858
def _local_concurrency():
1860
prefix = 'processor'
1861
for line in file('/proc/cpuinfo', 'rb'):
1862
if line.startswith(prefix):
1863
concurrency = int(line[line.find(':')+1:]) + 1
1865
elif sys.platform == 'darwin':
1866
def _local_concurrency():
1867
return subprocess.Popen(['sysctl', '-n', 'hw.availcpu'],
1868
stdout=subprocess.PIPE).communicate()[0]
1869
elif sys.platform[0:7] == 'freebsd':
1870
def _local_concurrency():
1871
return subprocess.Popen(['sysctl', '-n', 'hw.ncpu'],
1872
stdout=subprocess.PIPE).communicate()[0]
1873
elif sys.platform == 'sunos5':
1874
def _local_concurrency():
1875
return subprocess.Popen(['psrinfo', '-p',],
1876
stdout=subprocess.PIPE).communicate()[0]
1877
elif sys.platform == "win32":
1878
def _local_concurrency():
1879
# This appears to return the number of cores.
1880
return os.environ.get('NUMBER_OF_PROCESSORS')
1882
def _local_concurrency():
1887
_cached_local_concurrency = None
1889
def local_concurrency(use_cache=True):
1890
"""Return how many processes can be run concurrently.
1892
Rely on platform specific implementations and default to 1 (one) if
1893
anything goes wrong.
1895
global _cached_local_concurrency
1896
if _cached_local_concurrency is not None and use_cache:
1897
return _cached_local_concurrency
1900
concurrency = _local_concurrency()
1901
except (OSError, IOError):
1904
concurrency = int(concurrency)
1905
except (TypeError, ValueError):
1908
_cached_concurrency = concurrency
added
removed
bzrlib/osutils.py
