171
230
rename_func(tmp_name, new)
173
# Default is to just use the python builtins
174
abspath = os.path.abspath
175
realpath = os.path.realpath
233
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
234
# choke on a Unicode string containing a relative path if
235
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
237
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
238
def _posix_abspath(path):
239
# jam 20060426 rather than encoding to fsencoding
240
# copy posixpath.abspath, but use os.getcwdu instead
241
if not posixpath.isabs(path):
242
path = posixpath.join(getcwd(), path)
243
return posixpath.normpath(path)
246
def _posix_realpath(path):
247
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
250
def _win32_fixdrive(path):
251
"""Force drive letters to be consistent.
253
win32 is inconsistent whether it returns lower or upper case
254
and even if it was consistent the user might type the other
255
so we force it to uppercase
256
running python.exe under cmd.exe return capital C:\\
257
running win32 python inside a cygwin shell returns lowercase c:\\
259
drive, path = _nt_splitdrive(path)
260
return drive.upper() + path
263
def _win32_abspath(path):
264
# Real _nt_abspath doesn't have a problem with a unicode cwd
265
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
268
def _win98_abspath(path):
269
"""Return the absolute version of a path.
270
Windows 98 safe implementation (python reimplementation
271
of Win32 API function GetFullPathNameW)
276
# \\HOST\path => //HOST/path
277
# //HOST/path => //HOST/path
278
# path => C:/cwd/path
281
# check for absolute path
282
drive = _nt_splitdrive(path)[0]
283
if drive == '' and path[:2] not in('//','\\\\'):
285
# we cannot simply os.path.join cwd and path
286
# because os.path.join('C:','/path') produce '/path'
287
# and this is incorrect
288
if path[:1] in ('/','\\'):
289
cwd = _nt_splitdrive(cwd)[0]
291
path = cwd + '\\' + path
292
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
295
def _win32_realpath(path):
296
# Real _nt_realpath doesn't have a problem with a unicode cwd
297
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
300
def _win32_pathjoin(*args):
301
return _nt_join(*args).replace('\\', '/')
304
def _win32_normpath(path):
305
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
309
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
312
def _win32_mkdtemp(*args, **kwargs):
313
return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
316
def _win32_rename(old, new):
317
"""We expect to be able to atomically replace 'new' with old.
319
On win32, if new exists, it must be moved out of the way first,
323
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
325
if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
326
# If we try to rename a non-existant file onto cwd, we get
327
# EPERM or EACCES instead of ENOENT, this will raise ENOENT
328
# if the old path doesn't exist, sometimes we get EACCES
329
# On Linux, we seem to get EBUSY, on Mac we get EINVAL
335
return unicodedata.normalize('NFC', os.getcwdu())
338
# Default is to just use the python builtins, but these can be rebound on
339
# particular platforms.
340
abspath = _posix_abspath
341
realpath = _posix_realpath
176
342
pathjoin = os.path.join
177
343
normpath = os.path.normpath
178
344
getcwd = os.getcwdu
179
mkdtemp = tempfile.mkdtemp
180
345
rename = os.rename
181
346
dirname = os.path.dirname
182
347
basename = os.path.basename
184
if os.name == "posix":
185
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
186
# choke on a Unicode string containing a relative path if
187
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
189
_fs_enc = sys.getfilesystemencoding()
191
return os.path.abspath(path.encode(_fs_enc)).decode(_fs_enc)
194
return os.path.realpath(path.encode(_fs_enc)).decode(_fs_enc)
348
split = os.path.split
349
splitext = os.path.splitext
350
# These were already imported into local scope
351
# mkdtemp = tempfile.mkdtemp
352
# rmtree = shutil.rmtree
354
MIN_ABS_PATHLENGTH = 1
196
357
if sys.platform == 'win32':
197
# We need to use the Unicode-aware os.path.abspath and
198
# os.path.realpath on Windows systems.
200
return os.path.abspath(path).replace('\\', '/')
203
return os.path.realpath(path).replace('\\', '/')
206
return os.path.join(*args).replace('\\', '/')
209
return os.path.normpath(path).replace('\\', '/')
212
return os.getcwdu().replace('\\', '/')
214
def mkdtemp(*args, **kwargs):
215
return tempfile.mkdtemp(*args, **kwargs).replace('\\', '/')
217
def rename(old, new):
218
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
358
if win32utils.winver == 'Windows 98':
359
abspath = _win98_abspath
361
abspath = _win32_abspath
362
realpath = _win32_realpath
363
pathjoin = _win32_pathjoin
364
normpath = _win32_normpath
365
getcwd = _win32_getcwd
366
mkdtemp = _win32_mkdtemp
367
rename = _win32_rename
369
MIN_ABS_PATHLENGTH = 3
371
def _win32_delete_readonly(function, path, excinfo):
372
"""Error handler for shutil.rmtree function [for win32]
373
Helps to remove files and dirs marked as read-only.
375
exception = excinfo[1]
376
if function in (os.remove, os.rmdir) \
377
and isinstance(exception, OSError) \
378
and exception.errno == errno.EACCES:
384
def rmtree(path, ignore_errors=False, onerror=_win32_delete_readonly):
385
"""Replacer for shutil.rmtree: could remove readonly dirs/files"""
386
return shutil.rmtree(path, ignore_errors, onerror)
387
elif sys.platform == 'darwin':
391
def get_terminal_encoding():
392
"""Find the best encoding for printing to the screen.
394
This attempts to check both sys.stdout and sys.stdin to see
395
what encoding they are in, and if that fails it falls back to
396
osutils.get_user_encoding().
397
The problem is that on Windows, locale.getpreferredencoding()
398
is not the same encoding as that used by the console:
399
http://mail.python.org/pipermail/python-list/2003-May/162357.html
401
On my standard US Windows XP, the preferred encoding is
402
cp1252, but the console is cp437
404
from bzrlib.trace import mutter
405
output_encoding = getattr(sys.stdout, 'encoding', None)
406
if not output_encoding:
407
input_encoding = getattr(sys.stdin, 'encoding', None)
408
if not input_encoding:
409
output_encoding = get_user_encoding()
410
mutter('encoding stdout as osutils.get_user_encoding() %r',
413
output_encoding = input_encoding
414
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
416
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
417
if output_encoding == 'cp0':
418
# invalid encoding (cp0 means 'no codepage' on Windows)
419
output_encoding = get_user_encoding()
420
mutter('cp0 is invalid encoding.'
421
' encoding stdout as osutils.get_user_encoding() %r',
425
codecs.lookup(output_encoding)
427
sys.stderr.write('bzr: warning:'
428
' unknown terminal encoding %s.\n'
429
' Using encoding %s instead.\n'
430
% (output_encoding, get_user_encoding())
432
output_encoding = get_user_encoding()
434
return output_encoding
221
437
def normalizepath(f):
222
if hasattr(os.path, 'realpath'):
438
if getattr(os.path, 'realpath', None) is not None:
992
def _cicp_canonical_relpath(base, path):
993
"""Return the canonical path relative to base.
995
Like relpath, but on case-insensitive-case-preserving file-systems, this
996
will return the relpath as stored on the file-system rather than in the
997
case specified in the input string, for all existing portions of the path.
999
This will cause O(N) behaviour if called for every path in a tree; if you
1000
have a number of paths to convert, you should use canonical_relpaths().
1002
# TODO: it should be possible to optimize this for Windows by using the
1003
# win32 API FindFiles function to look for the specified name - but using
1004
# os.listdir() still gives us the correct, platform agnostic semantics in
1007
rel = relpath(base, path)
1008
# '.' will have been turned into ''
1012
abs_base = abspath(base)
1014
_listdir = os.listdir
1016
# use an explicit iterator so we can easily consume the rest on early exit.
1017
bit_iter = iter(rel.split('/'))
1018
for bit in bit_iter:
1020
for look in _listdir(current):
1021
if lbit == look.lower():
1022
current = pathjoin(current, look)
1025
# got to the end, nothing matched, so we just return the
1026
# non-existing bits as they were specified (the filename may be
1027
# the target of a move, for example).
1028
current = pathjoin(current, bit, *list(bit_iter))
1030
return current[len(abs_base)+1:]
1032
# XXX - TODO - we need better detection/integration of case-insensitive
1033
# file-systems; Linux often sees FAT32 devices (or NFS-mounted OSX
1034
# filesystems), for example, so could probably benefit from the same basic
1035
# support there. For now though, only Windows and OSX get that support, and
1036
# they get it for *all* file-systems!
1037
if sys.platform in ('win32', 'darwin'):
1038
canonical_relpath = _cicp_canonical_relpath
1040
canonical_relpath = relpath
1042
def canonical_relpaths(base, paths):
1043
"""Create an iterable to canonicalize a sequence of relative paths.
1045
The intent is for this implementation to use a cache, vastly speeding
1046
up multiple transformations in the same directory.
1048
# but for now, we haven't optimized...
1049
return [canonical_relpath(base, p) for p in paths]
625
1051
def safe_unicode(unicode_or_utf8_string):
626
1052
"""Coerce unicode_or_utf8_string into unicode.
628
1054
If it is unicode, it is returned.
629
Otherwise it is decoded from utf-8. If a decoding error
630
occurs, it is wrapped as a If the decoding fails, the exception is wrapped
631
as a BzrBadParameter exception.
1055
Otherwise it is decoded from utf-8. If decoding fails, the exception is
1056
wrapped in a BzrBadParameterNotUnicode exception.
633
1058
if isinstance(unicode_or_utf8_string, unicode):
634
1059
return unicode_or_utf8_string
636
1061
return unicode_or_utf8_string.decode('utf8')
637
1062
except UnicodeDecodeError:
638
raise BzrBadParameterNotUnicode(unicode_or_utf8_string)
1063
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
1066
def safe_utf8(unicode_or_utf8_string):
1067
"""Coerce unicode_or_utf8_string to a utf8 string.
1069
If it is a str, it is returned.
1070
If it is Unicode, it is encoded into a utf-8 string.
1072
if isinstance(unicode_or_utf8_string, str):
1073
# TODO: jam 20070209 This is overkill, and probably has an impact on
1074
# performance if we are dealing with lots of apis that want a
1077
# Make sure it is a valid utf-8 string
1078
unicode_or_utf8_string.decode('utf-8')
1079
except UnicodeDecodeError:
1080
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
1081
return unicode_or_utf8_string
1082
return unicode_or_utf8_string.encode('utf-8')
1085
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
1086
' Revision id generators should be creating utf8'
1090
def safe_revision_id(unicode_or_utf8_string, warn=True):
1091
"""Revision ids should now be utf8, but at one point they were unicode.
1093
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
1095
:param warn: Functions that are sanitizing user data can set warn=False
1096
:return: None or a utf8 revision id.
1098
if (unicode_or_utf8_string is None
1099
or unicode_or_utf8_string.__class__ == str):
1100
return unicode_or_utf8_string
1102
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
1104
return cache_utf8.encode(unicode_or_utf8_string)
1107
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
1108
' generators should be creating utf8 file ids.')
1111
def safe_file_id(unicode_or_utf8_string, warn=True):
1112
"""File ids should now be utf8, but at one point they were unicode.
1114
This is the same as safe_utf8, except it uses the cached encode functions
1115
to save a little bit of performance.
1117
:param unicode_or_utf8_string: A possibly Unicode file_id. (can also be
1119
:param warn: Functions that are sanitizing user data can set warn=False
1120
:return: None or a utf8 file id.
1122
if (unicode_or_utf8_string is None
1123
or unicode_or_utf8_string.__class__ == str):
1124
return unicode_or_utf8_string
1126
symbol_versioning.warn(_file_id_warning, DeprecationWarning,
1128
return cache_utf8.encode(unicode_or_utf8_string)
1131
_platform_normalizes_filenames = False
1132
if sys.platform == 'darwin':
1133
_platform_normalizes_filenames = True
1136
def normalizes_filenames():
1137
"""Return True if this platform normalizes unicode filenames.
1139
Mac OSX does, Windows/Linux do not.
1141
return _platform_normalizes_filenames
1144
def _accessible_normalized_filename(path):
1145
"""Get the unicode normalized path, and if you can access the file.
1147
On platforms where the system normalizes filenames (Mac OSX),
1148
you can access a file by any path which will normalize correctly.
1149
On platforms where the system does not normalize filenames
1150
(Windows, Linux), you have to access a file by its exact path.
1152
Internally, bzr only supports NFC normalization, since that is
1153
the standard for XML documents.
1155
So return the normalized path, and a flag indicating if the file
1156
can be accessed by that path.
1159
return unicodedata.normalize('NFC', unicode(path)), True
1162
def _inaccessible_normalized_filename(path):
1163
__doc__ = _accessible_normalized_filename.__doc__
1165
normalized = unicodedata.normalize('NFC', unicode(path))
1166
return normalized, normalized == path
1169
if _platform_normalizes_filenames:
1170
normalized_filename = _accessible_normalized_filename
1172
normalized_filename = _inaccessible_normalized_filename
641
1175
def terminal_width():
642
1176
"""Return estimated terminal width."""
644
# TODO: Do something smart on Windows?
646
# TODO: Is there anything that gets a better update when the window
647
# is resized while the program is running? We could use the Python termcap
1177
if sys.platform == 'win32':
1178
return win32utils.get_console_size()[0]
650
return int(os.environ['COLUMNS'])
651
except (IndexError, KeyError, ValueError):
1181
import struct, fcntl, termios
1182
s = struct.pack('HHHH', 0, 0, 0, 0)
1183
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1184
width = struct.unpack('HHHH', x)[1]
1189
width = int(os.environ['COLUMNS'])
654
1198
def supports_executable():
655
1199
return sys.platform != "win32"
1202
def supports_posix_readonly():
1203
"""Return True if 'readonly' has POSIX semantics, False otherwise.
1205
Notably, a win32 readonly file cannot be deleted, unlike POSIX where the
1206
directory controls creation/deletion, etc.
1208
And under win32, readonly means that the directory itself cannot be
1209
deleted. The contents of a readonly directory can be changed, unlike POSIX
1210
where files in readonly directories cannot be added, deleted or renamed.
1212
return sys.platform != "win32"
1215
def set_or_unset_env(env_variable, value):
1216
"""Modify the environment, setting or removing the env_variable.
1218
:param env_variable: The environment variable in question
1219
:param value: The value to set the environment to. If None, then
1220
the variable will be removed.
1221
:return: The original value of the environment variable.
1223
orig_val = os.environ.get(env_variable)
1225
if orig_val is not None:
1226
del os.environ[env_variable]
1228
if isinstance(value, unicode):
1229
value = value.encode(get_user_encoding())
1230
os.environ[env_variable] = value
1234
_validWin32PathRE = re.compile(r'^([A-Za-z]:[/\\])?[^:<>*"?\|]*$')
1237
def check_legal_path(path):
1238
"""Check whether the supplied path is legal.
1239
This is only required on Windows, so we don't test on other platforms
1242
if sys.platform != "win32":
1244
if _validWin32PathRE.match(path) is None:
1245
raise errors.IllegalPath(path)
1248
_WIN32_ERROR_DIRECTORY = 267 # Similar to errno.ENOTDIR
1250
def _is_error_enotdir(e):
1251
"""Check if this exception represents ENOTDIR.
1253
Unfortunately, python is very inconsistent about the exception
1254
here. The cases are:
1255
1) Linux, Mac OSX all versions seem to set errno == ENOTDIR
1256
2) Windows, Python2.4, uses errno == ERROR_DIRECTORY (267)
1257
which is the windows error code.
1258
3) Windows, Python2.5 uses errno == EINVAL and
1259
winerror == ERROR_DIRECTORY
1261
:param e: An Exception object (expected to be OSError with an errno
1262
attribute, but we should be able to cope with anything)
1263
:return: True if this represents an ENOTDIR error. False otherwise.
1265
en = getattr(e, 'errno', None)
1266
if (en == errno.ENOTDIR
1267
or (sys.platform == 'win32'
1268
and (en == _WIN32_ERROR_DIRECTORY
1269
or (en == errno.EINVAL
1270
and getattr(e, 'winerror', None) == _WIN32_ERROR_DIRECTORY)
1276
def walkdirs(top, prefix=""):
1277
"""Yield data about all the directories in a tree.
1279
This yields all the data about the contents of a directory at a time.
1280
After each directory has been yielded, if the caller has mutated the list
1281
to exclude some directories, they are then not descended into.
1283
The data yielded is of the form:
1284
((directory-relpath, directory-path-from-top),
1285
[(relpath, basename, kind, lstat, path-from-top), ...]),
1286
- directory-relpath is the relative path of the directory being returned
1287
with respect to top. prefix is prepended to this.
1288
- directory-path-from-root is the path including top for this directory.
1289
It is suitable for use with os functions.
1290
- relpath is the relative path within the subtree being walked.
1291
- basename is the basename of the path
1292
- kind is the kind of the file now. If unknown then the file is not
1293
present within the tree - but it may be recorded as versioned. See
1295
- lstat is the stat data *if* the file was statted.
1296
- planned, not implemented:
1297
path_from_tree_root is the path from the root of the tree.
1299
:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
1300
allows one to walk a subtree but get paths that are relative to a tree
1302
:return: an iterator over the dirs.
1304
#TODO there is a bit of a smell where the results of the directory-
1305
# summary in this, and the path from the root, may not agree
1306
# depending on top and prefix - i.e. ./foo and foo as a pair leads to
1307
# potentially confusing output. We should make this more robust - but
1308
# not at a speed cost. RBC 20060731
1310
_directory = _directory_kind
1311
_listdir = os.listdir
1312
_kind_from_mode = file_kind_from_stat_mode
1313
pending = [(safe_unicode(prefix), "", _directory, None, safe_unicode(top))]
1315
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1316
relroot, _, _, _, top = pending.pop()
1318
relprefix = relroot + u'/'
1321
top_slash = top + u'/'
1324
append = dirblock.append
1326
names = sorted(_listdir(top))
1328
if not _is_error_enotdir(e):
1332
abspath = top_slash + name
1333
statvalue = _lstat(abspath)
1334
kind = _kind_from_mode(statvalue.st_mode)
1335
append((relprefix + name, name, kind, statvalue, abspath))
1336
yield (relroot, top), dirblock
1338
# push the user specified dirs from dirblock
1339
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1342
class DirReader(object):
1343
"""An interface for reading directories."""
1345
def top_prefix_to_starting_dir(self, top, prefix=""):
1346
"""Converts top and prefix to a starting dir entry
1348
:param top: A utf8 path
1349
:param prefix: An optional utf8 path to prefix output relative paths
1351
:return: A tuple starting with prefix, and ending with the native
1354
raise NotImplementedError(self.top_prefix_to_starting_dir)
1356
def read_dir(self, prefix, top):
1357
"""Read a specific dir.
1359
:param prefix: A utf8 prefix to be preprended to the path basenames.
1360
:param top: A natively encoded path to read.
1361
:return: A list of the directories contents. Each item contains:
1362
(utf8_relpath, utf8_name, kind, lstatvalue, native_abspath)
1364
raise NotImplementedError(self.read_dir)
1367
_selected_dir_reader = None
1370
def _walkdirs_utf8(top, prefix=""):
1371
"""Yield data about all the directories in a tree.
1373
This yields the same information as walkdirs() only each entry is yielded
1374
in utf-8. On platforms which have a filesystem encoding of utf8 the paths
1375
are returned as exact byte-strings.
1377
:return: yields a tuple of (dir_info, [file_info])
1378
dir_info is (utf8_relpath, path-from-top)
1379
file_info is (utf8_relpath, utf8_name, kind, lstat, path-from-top)
1380
if top is an absolute path, path-from-top is also an absolute path.
1381
path-from-top might be unicode or utf8, but it is the correct path to
1382
pass to os functions to affect the file in question. (such as os.lstat)
1384
global _selected_dir_reader
1385
if _selected_dir_reader is None:
1386
fs_encoding = _fs_enc.upper()
1387
if sys.platform == "win32" and win32utils.winver == 'Windows NT':
1388
# Win98 doesn't have unicode apis like FindFirstFileW
1389
# TODO: We possibly could support Win98 by falling back to the
1390
# original FindFirstFile, and using TCHAR instead of WCHAR,
1391
# but that gets a bit tricky, and requires custom compiling
1394
from bzrlib._walkdirs_win32 import Win32ReadDir
1396
_selected_dir_reader = UnicodeDirReader()
1398
_selected_dir_reader = Win32ReadDir()
1399
elif fs_encoding not in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1400
# ANSI_X3.4-1968 is a form of ASCII
1401
_selected_dir_reader = UnicodeDirReader()
1404
from bzrlib._readdir_pyx import UTF8DirReader
1406
# No optimised code path
1407
_selected_dir_reader = UnicodeDirReader()
1409
_selected_dir_reader = UTF8DirReader()
1410
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1411
# But we don't actually uses 1-3 in pending, so set them to None
1412
pending = [[_selected_dir_reader.top_prefix_to_starting_dir(top, prefix)]]
1413
read_dir = _selected_dir_reader.read_dir
1414
_directory = _directory_kind
1416
relroot, _, _, _, top = pending[-1].pop()
1419
dirblock = sorted(read_dir(relroot, top))
1420
yield (relroot, top), dirblock
1421
# push the user specified dirs from dirblock
1422
next = [d for d in reversed(dirblock) if d[2] == _directory]
1424
pending.append(next)
1427
class UnicodeDirReader(DirReader):
1428
"""A dir reader for non-utf8 file systems, which transcodes."""
1430
__slots__ = ['_utf8_encode']
1433
self._utf8_encode = codecs.getencoder('utf8')
1435
def top_prefix_to_starting_dir(self, top, prefix=""):
1436
"""See DirReader.top_prefix_to_starting_dir."""
1437
return (safe_utf8(prefix), None, None, None, safe_unicode(top))
1439
def read_dir(self, prefix, top):
1440
"""Read a single directory from a non-utf8 file system.
1442
top, and the abspath element in the output are unicode, all other paths
1443
are utf8. Local disk IO is done via unicode calls to listdir etc.
1445
This is currently the fallback code path when the filesystem encoding is
1446
not UTF-8. It may be better to implement an alternative so that we can
1447
safely handle paths that are not properly decodable in the current
1450
See DirReader.read_dir for details.
1452
_utf8_encode = self._utf8_encode
1454
_listdir = os.listdir
1455
_kind_from_mode = file_kind_from_stat_mode
1458
relprefix = prefix + '/'
1461
top_slash = top + u'/'
1464
append = dirblock.append
1465
for name in sorted(_listdir(top)):
1467
name_utf8 = _utf8_encode(name)[0]
1468
except UnicodeDecodeError:
1469
raise errors.BadFilenameEncoding(
1470
_utf8_encode(relprefix)[0] + name, _fs_enc)
1471
abspath = top_slash + name
1472
statvalue = _lstat(abspath)
1473
kind = _kind_from_mode(statvalue.st_mode)
1474
append((relprefix + name_utf8, name_utf8, kind, statvalue, abspath))
1478
def copy_tree(from_path, to_path, handlers={}):
1479
"""Copy all of the entries in from_path into to_path.
1481
:param from_path: The base directory to copy.
1482
:param to_path: The target directory. If it does not exist, it will
1484
:param handlers: A dictionary of functions, which takes a source and
1485
destinations for files, directories, etc.
1486
It is keyed on the file kind, such as 'directory', 'symlink', or 'file'
1487
'file', 'directory', and 'symlink' should always exist.
1488
If they are missing, they will be replaced with 'os.mkdir()',
1489
'os.readlink() + os.symlink()', and 'shutil.copy2()', respectively.
1491
# Now, just copy the existing cached tree to the new location
1492
# We use a cheap trick here.
1493
# Absolute paths are prefixed with the first parameter
1494
# relative paths are prefixed with the second.
1495
# So we can get both the source and target returned
1496
# without any extra work.
1498
def copy_dir(source, dest):
1501
def copy_link(source, dest):
1502
"""Copy the contents of a symlink"""
1503
link_to = os.readlink(source)
1504
os.symlink(link_to, dest)
1506
real_handlers = {'file':shutil.copy2,
1507
'symlink':copy_link,
1508
'directory':copy_dir,
1510
real_handlers.update(handlers)
1512
if not os.path.exists(to_path):
1513
real_handlers['directory'](from_path, to_path)
1515
for dir_info, entries in walkdirs(from_path, prefix=to_path):
1516
for relpath, name, kind, st, abspath in entries:
1517
real_handlers[kind](abspath, relpath)
1520
def path_prefix_key(path):
1521
"""Generate a prefix-order path key for path.
1523
This can be used to sort paths in the same way that walkdirs does.
1525
return (dirname(path) , path)
1528
def compare_paths_prefix_order(path_a, path_b):
1529
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1530
key_a = path_prefix_key(path_a)
1531
key_b = path_prefix_key(path_b)
1532
return cmp(key_a, key_b)
1535
_cached_user_encoding = None
1538
def get_user_encoding(use_cache=True):
1539
"""Find out what the preferred user encoding is.
1541
This is generally the encoding that is used for command line parameters
1542
and file contents. This may be different from the terminal encoding
1543
or the filesystem encoding.
1545
:param use_cache: Enable cache for detected encoding.
1546
(This parameter is turned on by default,
1547
and required only for selftesting)
1549
:return: A string defining the preferred user encoding
1551
global _cached_user_encoding
1552
if _cached_user_encoding is not None and use_cache:
1553
return _cached_user_encoding
1555
if sys.platform == 'darwin':
1556
# python locale.getpreferredencoding() always return
1557
# 'mac-roman' on darwin. That's a lie.
1558
sys.platform = 'posix'
1560
if os.environ.get('LANG', None) is None:
1561
# If LANG is not set, we end up with 'ascii', which is bad
1562
# ('mac-roman' is more than ascii), so we set a default which
1563
# will give us UTF-8 (which appears to work in all cases on
1564
# OSX). Users are still free to override LANG of course, as
1565
# long as it give us something meaningful. This work-around
1566
# *may* not be needed with python 3k and/or OSX 10.5, but will
1567
# work with them too -- vila 20080908
1568
os.environ['LANG'] = 'en_US.UTF-8'
1571
sys.platform = 'darwin'
1576
user_encoding = locale.getpreferredencoding()
1577
except locale.Error, e:
1578
sys.stderr.write('bzr: warning: %s\n'
1579
' Could not determine what text encoding to use.\n'
1580
' This error usually means your Python interpreter\n'
1581
' doesn\'t support the locale set by $LANG (%s)\n'
1582
" Continuing with ascii encoding.\n"
1583
% (e, os.environ.get('LANG')))
1584
user_encoding = 'ascii'
1586
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1587
# treat that as ASCII, and not support printing unicode characters to the
1590
# For python scripts run under vim, we get '', so also treat that as ASCII
1591
if user_encoding in (None, 'cp0', ''):
1592
user_encoding = 'ascii'
1596
codecs.lookup(user_encoding)
1598
sys.stderr.write('bzr: warning:'
1599
' unknown encoding %s.'
1600
' Continuing with ascii encoding.\n'
1603
user_encoding = 'ascii'
1606
_cached_user_encoding = user_encoding
1608
return user_encoding
1611
def get_host_name():
1612
"""Return the current unicode host name.
1614
This is meant to be used in place of socket.gethostname() because that
1615
behaves inconsistently on different platforms.
1617
if sys.platform == "win32":
1619
return win32utils.get_host_name()
1622
return socket.gethostname().decode(get_user_encoding())
1625
def recv_all(socket, bytes):
1626
"""Receive an exact number of bytes.
1628
Regular Socket.recv() may return less than the requested number of bytes,
1629
dependning on what's in the OS buffer. MSG_WAITALL is not available
1630
on all platforms, but this should work everywhere. This will return
1631
less than the requested amount if the remote end closes.
1633
This isn't optimized and is intended mostly for use in testing.
1636
while len(b) < bytes:
1637
new = until_no_eintr(socket.recv, bytes - len(b))
1644
def send_all(socket, bytes, report_activity=None):
1645
"""Send all bytes on a socket.
1647
Regular socket.sendall() can give socket error 10053 on Windows. This
1648
implementation sends no more than 64k at a time, which avoids this problem.
1650
:param report_activity: Call this as bytes are read, see
1651
Transport._report_activity
1654
for pos in xrange(0, len(bytes), chunk_size):
1655
block = bytes[pos:pos+chunk_size]
1656
if report_activity is not None:
1657
report_activity(len(block), 'write')
1658
until_no_eintr(socket.sendall, block)
1661
def dereference_path(path):
1662
"""Determine the real path to a file.
1664
All parent elements are dereferenced. But the file itself is not
1666
:param path: The original path. May be absolute or relative.
1667
:return: the real path *to* the file
1669
parent, base = os.path.split(path)
1670
# The pathjoin for '.' is a workaround for Python bug #1213894.
1671
# (initial path components aren't dereferenced)
1672
return pathjoin(realpath(pathjoin('.', parent)), base)
1675
def supports_mapi():
1676
"""Return True if we can use MAPI to launch a mail client."""
1677
return sys.platform == "win32"
1680
def resource_string(package, resource_name):
1681
"""Load a resource from a package and return it as a string.
1683
Note: Only packages that start with bzrlib are currently supported.
1685
This is designed to be a lightweight implementation of resource
1686
loading in a way which is API compatible with the same API from
1688
http://peak.telecommunity.com/DevCenter/PkgResources#basic-resource-access.
1689
If and when pkg_resources becomes a standard library, this routine
1692
# Check package name is within bzrlib
1693
if package == "bzrlib":
1694
resource_relpath = resource_name
1695
elif package.startswith("bzrlib."):
1696
package = package[len("bzrlib."):].replace('.', os.sep)
1697
resource_relpath = pathjoin(package, resource_name)
1699
raise errors.BzrError('resource package %s not in bzrlib' % package)
1701
# Map the resource to a file and read its contents
1702
base = dirname(bzrlib.__file__)
1703
if getattr(sys, 'frozen', None): # bzr.exe
1704
base = abspath(pathjoin(base, '..', '..'))
1705
filename = pathjoin(base, resource_relpath)
1706
return open(filename, 'rU').read()
1709
def file_kind_from_stat_mode_thunk(mode):
1710
global file_kind_from_stat_mode
1711
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
1713
from bzrlib._readdir_pyx import UTF8DirReader
1714
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
1716
from bzrlib._readdir_py import (
1717
_kind_from_mode as file_kind_from_stat_mode
1719
return file_kind_from_stat_mode(mode)
1720
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
1723
def file_kind(f, _lstat=os.lstat):
1725
return file_kind_from_stat_mode(_lstat(f).st_mode)
1727
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
1728
raise errors.NoSuchFile(f)
1732
def until_no_eintr(f, *a, **kw):
1733
"""Run f(*a, **kw), retrying if an EINTR error occurs."""
1734
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
1738
except (IOError, OSError), e:
1739
if e.errno == errno.EINTR:
1743
def re_compile_checked(re_string, flags=0, where=""):
1744
"""Return a compiled re, or raise a sensible error.
1746
This should only be used when compiling user-supplied REs.
1748
:param re_string: Text form of regular expression.
1749
:param flags: eg re.IGNORECASE
1750
:param where: Message explaining to the user the context where
1751
it occurred, eg 'log search filter'.
1753
# from https://bugs.launchpad.net/bzr/+bug/251352
1755
re_obj = re.compile(re_string, flags)
1760
where = ' in ' + where
1761
# despite the name 'error' is a type
1762
raise errors.BzrCommandError('Invalid regular expression%s: %r: %s'
1763
% (where, re_string, e))
1766
if sys.platform == "win32":
1769
return msvcrt.getch()
1774
fd = sys.stdin.fileno()
1775
settings = termios.tcgetattr(fd)
1778
ch = sys.stdin.read(1)
1780
termios.tcsetattr(fd, termios.TCSADRAIN, settings)