230
171
rename_func(tmp_name, new)
233
# In Python 2.4.2 and older, os.path.abspath and os.path.realpath
234
# choke on a Unicode string containing a relative path if
235
# os.getcwd() returns a non-sys.getdefaultencoding()-encoded
237
_fs_enc = sys.getfilesystemencoding() or 'utf-8'
238
def _posix_abspath(path):
239
# jam 20060426 rather than encoding to fsencoding
240
# copy posixpath.abspath, but use os.getcwdu instead
241
if not posixpath.isabs(path):
242
path = posixpath.join(getcwd(), path)
243
return posixpath.normpath(path)
246
def _posix_realpath(path):
247
return posixpath.realpath(path.encode(_fs_enc)).decode(_fs_enc)
250
def _win32_fixdrive(path):
251
"""Force drive letters to be consistent.
253
win32 is inconsistent whether it returns lower or upper case
254
and even if it was consistent the user might type the other
255
so we force it to uppercase
256
running python.exe under cmd.exe return capital C:\\
257
running win32 python inside a cygwin shell returns lowercase c:\\
259
drive, path = _nt_splitdrive(path)
260
return drive.upper() + path
263
def _win32_abspath(path):
264
# Real _nt_abspath doesn't have a problem with a unicode cwd
265
return _win32_fixdrive(_nt_abspath(unicode(path)).replace('\\', '/'))
268
def _win98_abspath(path):
269
"""Return the absolute version of a path.
270
Windows 98 safe implementation (python reimplementation
271
of Win32 API function GetFullPathNameW)
276
# \\HOST\path => //HOST/path
277
# //HOST/path => //HOST/path
278
# path => C:/cwd/path
281
# check for absolute path
282
drive = _nt_splitdrive(path)[0]
283
if drive == '' and path[:2] not in('//','\\\\'):
285
# we cannot simply os.path.join cwd and path
286
# because os.path.join('C:','/path') produce '/path'
287
# and this is incorrect
288
if path[:1] in ('/','\\'):
289
cwd = _nt_splitdrive(cwd)[0]
291
path = cwd + '\\' + path
292
return _win32_fixdrive(_nt_normpath(path).replace('\\', '/'))
295
def _win32_realpath(path):
296
# Real _nt_realpath doesn't have a problem with a unicode cwd
297
return _win32_fixdrive(_nt_realpath(unicode(path)).replace('\\', '/'))
300
def _win32_pathjoin(*args):
301
return _nt_join(*args).replace('\\', '/')
304
def _win32_normpath(path):
305
return _win32_fixdrive(_nt_normpath(unicode(path)).replace('\\', '/'))
309
return _win32_fixdrive(os.getcwdu().replace('\\', '/'))
312
def _win32_mkdtemp(*args, **kwargs):
313
return _win32_fixdrive(tempfile.mkdtemp(*args, **kwargs).replace('\\', '/'))
316
def _win32_rename(old, new):
317
"""We expect to be able to atomically replace 'new' with old.
319
On win32, if new exists, it must be moved out of the way first,
323
fancy_rename(old, new, rename_func=os.rename, unlink_func=os.unlink)
325
if e.errno in (errno.EPERM, errno.EACCES, errno.EBUSY, errno.EINVAL):
326
# If we try to rename a non-existant file onto cwd, we get
327
# EPERM or EACCES instead of ENOENT, this will raise ENOENT
328
# if the old path doesn't exist, sometimes we get EACCES
329
# On Linux, we seem to get EBUSY, on Mac we get EINVAL
335
return unicodedata.normalize('NFC', os.getcwdu())
338
# Default is to just use the python builtins, but these can be rebound on
339
# particular platforms.
340
abspath = _posix_abspath
341
realpath = _posix_realpath
173
# Default is to just use the python builtins
174
abspath = os.path.abspath
175
realpath = os.path.realpath
342
176
pathjoin = os.path.join
343
177
normpath = os.path.normpath
344
178
getcwd = os.getcwdu
179
mkdtemp = tempfile.mkdtemp
345
180
rename = os.rename
346
181
dirname = os.path.dirname
347
182
basename = os.path.basename
348
split = os.path.split
349
splitext = os.path.splitext
350
# These were already imported into local scope
351
# mkdtemp = tempfile.mkdtemp
352
# rmtree = shutil.rmtree
354
MIN_ABS_PATHLENGTH = 1
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)
357
196
if sys.platform == 'win32':
358
if win32utils.winver == 'Windows 98':
359
abspath = _win98_abspath
361
abspath = _win32_abspath
362
realpath = _win32_realpath
363
pathjoin = _win32_pathjoin
364
normpath = _win32_normpath
365
getcwd = _win32_getcwd
366
mkdtemp = _win32_mkdtemp
367
rename = _win32_rename
369
MIN_ABS_PATHLENGTH = 3
371
def _win32_delete_readonly(function, path, excinfo):
372
"""Error handler for shutil.rmtree function [for win32]
373
Helps to remove files and dirs marked as read-only.
375
exception = excinfo[1]
376
if function in (os.remove, os.rmdir) \
377
and isinstance(exception, OSError) \
378
and exception.errno == errno.EACCES:
384
def rmtree(path, ignore_errors=False, onerror=_win32_delete_readonly):
385
"""Replacer for shutil.rmtree: could remove readonly dirs/files"""
386
return shutil.rmtree(path, ignore_errors, onerror)
387
elif sys.platform == 'darwin':
391
def get_terminal_encoding():
392
"""Find the best encoding for printing to the screen.
394
This attempts to check both sys.stdout and sys.stdin to see
395
what encoding they are in, and if that fails it falls back to
396
osutils.get_user_encoding().
397
The problem is that on Windows, locale.getpreferredencoding()
398
is not the same encoding as that used by the console:
399
http://mail.python.org/pipermail/python-list/2003-May/162357.html
401
On my standard US Windows XP, the preferred encoding is
402
cp1252, but the console is cp437
404
from bzrlib.trace import mutter
405
output_encoding = getattr(sys.stdout, 'encoding', None)
406
if not output_encoding:
407
input_encoding = getattr(sys.stdin, 'encoding', None)
408
if not input_encoding:
409
output_encoding = get_user_encoding()
410
mutter('encoding stdout as osutils.get_user_encoding() %r',
413
output_encoding = input_encoding
414
mutter('encoding stdout as sys.stdin encoding %r', output_encoding)
416
mutter('encoding stdout as sys.stdout encoding %r', output_encoding)
417
if output_encoding == 'cp0':
418
# invalid encoding (cp0 means 'no codepage' on Windows)
419
output_encoding = get_user_encoding()
420
mutter('cp0 is invalid encoding.'
421
' encoding stdout as osutils.get_user_encoding() %r',
425
codecs.lookup(output_encoding)
427
sys.stderr.write('bzr: warning:'
428
' unknown terminal encoding %s.\n'
429
' Using encoding %s instead.\n'
430
% (output_encoding, get_user_encoding())
432
output_encoding = get_user_encoding()
434
return output_encoding
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)
437
221
def normalizepath(f):
438
if getattr(os.path, 'realpath', None) is not None:
222
if hasattr(os.path, 'realpath'):
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, for example, so could
1034
# probably benefit from the same basic support there. For now though, only
1035
# Windows gets that support, and it gets it for *all* file-systems!
1036
if sys.platform == "win32":
1037
canonical_relpath = _cicp_canonical_relpath
1039
canonical_relpath = relpath
1041
def canonical_relpaths(base, paths):
1042
"""Create an iterable to canonicalize a sequence of relative paths.
1044
The intent is for this implementation to use a cache, vastly speeding
1045
up multiple transformations in the same directory.
1047
# but for now, we haven't optimized...
1048
return [canonical_relpath(base, p) for p in paths]
1050
593
def safe_unicode(unicode_or_utf8_string):
1051
594
"""Coerce unicode_or_utf8_string into unicode.
1053
596
If it is unicode, it is returned.
1054
Otherwise it is decoded from utf-8. If decoding fails, the exception is
1055
wrapped in a BzrBadParameterNotUnicode exception.
597
Otherwise it is decoded from utf-8. If a decoding error
598
occurs, it is wrapped as a If the decoding fails, the exception is wrapped
599
as a BzrBadParameter exception.
1057
601
if isinstance(unicode_or_utf8_string, unicode):
1058
602
return unicode_or_utf8_string
1060
604
return unicode_or_utf8_string.decode('utf8')
1061
605
except UnicodeDecodeError:
1062
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
1065
def safe_utf8(unicode_or_utf8_string):
1066
"""Coerce unicode_or_utf8_string to a utf8 string.
1068
If it is a str, it is returned.
1069
If it is Unicode, it is encoded into a utf-8 string.
1071
if isinstance(unicode_or_utf8_string, str):
1072
# TODO: jam 20070209 This is overkill, and probably has an impact on
1073
# performance if we are dealing with lots of apis that want a
1076
# Make sure it is a valid utf-8 string
1077
unicode_or_utf8_string.decode('utf-8')
1078
except UnicodeDecodeError:
1079
raise errors.BzrBadParameterNotUnicode(unicode_or_utf8_string)
1080
return unicode_or_utf8_string
1081
return unicode_or_utf8_string.encode('utf-8')
1084
_revision_id_warning = ('Unicode revision ids were deprecated in bzr 0.15.'
1085
' Revision id generators should be creating utf8'
1089
def safe_revision_id(unicode_or_utf8_string, warn=True):
1090
"""Revision ids should now be utf8, but at one point they were unicode.
1092
:param unicode_or_utf8_string: A possibly Unicode revision_id. (can also be
1094
:param warn: Functions that are sanitizing user data can set warn=False
1095
:return: None or a utf8 revision id.
1097
if (unicode_or_utf8_string is None
1098
or unicode_or_utf8_string.__class__ == str):
1099
return unicode_or_utf8_string
1101
symbol_versioning.warn(_revision_id_warning, DeprecationWarning,
1103
return cache_utf8.encode(unicode_or_utf8_string)
1106
_file_id_warning = ('Unicode file ids were deprecated in bzr 0.15. File id'
1107
' generators should be creating utf8 file ids.')
1110
def safe_file_id(unicode_or_utf8_string, warn=True):
1111
"""File ids should now be utf8, but at one point they were unicode.
1113
This is the same as safe_utf8, except it uses the cached encode functions
1114
to save a little bit of performance.
1116
:param unicode_or_utf8_string: A possibly Unicode file_id. (can also be
1118
:param warn: Functions that are sanitizing user data can set warn=False
1119
:return: None or a utf8 file id.
1121
if (unicode_or_utf8_string is None
1122
or unicode_or_utf8_string.__class__ == str):
1123
return unicode_or_utf8_string
1125
symbol_versioning.warn(_file_id_warning, DeprecationWarning,
1127
return cache_utf8.encode(unicode_or_utf8_string)
1130
_platform_normalizes_filenames = False
1131
if sys.platform == 'darwin':
1132
_platform_normalizes_filenames = True
1135
def normalizes_filenames():
1136
"""Return True if this platform normalizes unicode filenames.
1138
Mac OSX does, Windows/Linux do not.
1140
return _platform_normalizes_filenames
1143
def _accessible_normalized_filename(path):
1144
"""Get the unicode normalized path, and if you can access the file.
1146
On platforms where the system normalizes filenames (Mac OSX),
1147
you can access a file by any path which will normalize correctly.
1148
On platforms where the system does not normalize filenames
1149
(Windows, Linux), you have to access a file by its exact path.
1151
Internally, bzr only supports NFC normalization, since that is
1152
the standard for XML documents.
1154
So return the normalized path, and a flag indicating if the file
1155
can be accessed by that path.
1158
return unicodedata.normalize('NFC', unicode(path)), True
1161
def _inaccessible_normalized_filename(path):
1162
__doc__ = _accessible_normalized_filename.__doc__
1164
normalized = unicodedata.normalize('NFC', unicode(path))
1165
return normalized, normalized == path
1168
if _platform_normalizes_filenames:
1169
normalized_filename = _accessible_normalized_filename
1171
normalized_filename = _inaccessible_normalized_filename
606
raise BzrBadParameterNotUnicode(unicode_or_utf8_string)
1174
609
def terminal_width():
1175
610
"""Return estimated terminal width."""
1176
if sys.platform == 'win32':
1177
return win32utils.get_console_size()[0]
612
# TODO: Do something smart on Windows?
614
# TODO: Is there anything that gets a better update when the window
615
# is resized while the program is running? We could use the Python termcap
1180
import struct, fcntl, termios
1181
s = struct.pack('HHHH', 0, 0, 0, 0)
1182
x = fcntl.ioctl(1, termios.TIOCGWINSZ, s)
1183
width = struct.unpack('HHHH', x)[1]
1188
width = int(os.environ['COLUMNS'])
618
return int(os.environ['COLUMNS'])
619
except (IndexError, KeyError, ValueError):
1197
622
def supports_executable():
1198
return sys.platform != "win32"
1201
def supports_posix_readonly():
1202
"""Return True if 'readonly' has POSIX semantics, False otherwise.
1204
Notably, a win32 readonly file cannot be deleted, unlike POSIX where the
1205
directory controls creation/deletion, etc.
1207
And under win32, readonly means that the directory itself cannot be
1208
deleted. The contents of a readonly directory can be changed, unlike POSIX
1209
where files in readonly directories cannot be added, deleted or renamed.
1211
return sys.platform != "win32"
1214
def set_or_unset_env(env_variable, value):
1215
"""Modify the environment, setting or removing the env_variable.
1217
:param env_variable: The environment variable in question
1218
:param value: The value to set the environment to. If None, then
1219
the variable will be removed.
1220
:return: The original value of the environment variable.
1222
orig_val = os.environ.get(env_variable)
1224
if orig_val is not None:
1225
del os.environ[env_variable]
1227
if isinstance(value, unicode):
1228
value = value.encode(get_user_encoding())
1229
os.environ[env_variable] = value
1233
_validWin32PathRE = re.compile(r'^([A-Za-z]:[/\\])?[^:<>*"?\|]*$')
1236
def check_legal_path(path):
1237
"""Check whether the supplied path is legal.
1238
This is only required on Windows, so we don't test on other platforms
1241
if sys.platform != "win32":
1243
if _validWin32PathRE.match(path) is None:
1244
raise errors.IllegalPath(path)
1247
_WIN32_ERROR_DIRECTORY = 267 # Similar to errno.ENOTDIR
1249
def _is_error_enotdir(e):
1250
"""Check if this exception represents ENOTDIR.
1252
Unfortunately, python is very inconsistent about the exception
1253
here. The cases are:
1254
1) Linux, Mac OSX all versions seem to set errno == ENOTDIR
1255
2) Windows, Python2.4, uses errno == ERROR_DIRECTORY (267)
1256
which is the windows error code.
1257
3) Windows, Python2.5 uses errno == EINVAL and
1258
winerror == ERROR_DIRECTORY
1260
:param e: An Exception object (expected to be OSError with an errno
1261
attribute, but we should be able to cope with anything)
1262
:return: True if this represents an ENOTDIR error. False otherwise.
1264
en = getattr(e, 'errno', None)
1265
if (en == errno.ENOTDIR
1266
or (sys.platform == 'win32'
1267
and (en == _WIN32_ERROR_DIRECTORY
1268
or (en == errno.EINVAL
1269
and getattr(e, 'winerror', None) == _WIN32_ERROR_DIRECTORY)
1275
def walkdirs(top, prefix=""):
1276
"""Yield data about all the directories in a tree.
1278
This yields all the data about the contents of a directory at a time.
1279
After each directory has been yielded, if the caller has mutated the list
1280
to exclude some directories, they are then not descended into.
1282
The data yielded is of the form:
1283
((directory-relpath, directory-path-from-top),
1284
[(relpath, basename, kind, lstat, path-from-top), ...]),
1285
- directory-relpath is the relative path of the directory being returned
1286
with respect to top. prefix is prepended to this.
1287
- directory-path-from-root is the path including top for this directory.
1288
It is suitable for use with os functions.
1289
- relpath is the relative path within the subtree being walked.
1290
- basename is the basename of the path
1291
- kind is the kind of the file now. If unknown then the file is not
1292
present within the tree - but it may be recorded as versioned. See
1294
- lstat is the stat data *if* the file was statted.
1295
- planned, not implemented:
1296
path_from_tree_root is the path from the root of the tree.
1298
:param prefix: Prefix the relpaths that are yielded with 'prefix'. This
1299
allows one to walk a subtree but get paths that are relative to a tree
1301
:return: an iterator over the dirs.
1303
#TODO there is a bit of a smell where the results of the directory-
1304
# summary in this, and the path from the root, may not agree
1305
# depending on top and prefix - i.e. ./foo and foo as a pair leads to
1306
# potentially confusing output. We should make this more robust - but
1307
# not at a speed cost. RBC 20060731
1309
_directory = _directory_kind
1310
_listdir = os.listdir
1311
_kind_from_mode = file_kind_from_stat_mode
1312
pending = [(safe_unicode(prefix), "", _directory, None, safe_unicode(top))]
1314
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1315
relroot, _, _, _, top = pending.pop()
1317
relprefix = relroot + u'/'
1320
top_slash = top + u'/'
1323
append = dirblock.append
1325
names = sorted(_listdir(top))
1327
if not _is_error_enotdir(e):
1331
abspath = top_slash + name
1332
statvalue = _lstat(abspath)
1333
kind = _kind_from_mode(statvalue.st_mode)
1334
append((relprefix + name, name, kind, statvalue, abspath))
1335
yield (relroot, top), dirblock
1337
# push the user specified dirs from dirblock
1338
pending.extend(d for d in reversed(dirblock) if d[2] == _directory)
1341
class DirReader(object):
1342
"""An interface for reading directories."""
1344
def top_prefix_to_starting_dir(self, top, prefix=""):
1345
"""Converts top and prefix to a starting dir entry
1347
:param top: A utf8 path
1348
:param prefix: An optional utf8 path to prefix output relative paths
1350
:return: A tuple starting with prefix, and ending with the native
1353
raise NotImplementedError(self.top_prefix_to_starting_dir)
1355
def read_dir(self, prefix, top):
1356
"""Read a specific dir.
1358
:param prefix: A utf8 prefix to be preprended to the path basenames.
1359
:param top: A natively encoded path to read.
1360
:return: A list of the directories contents. Each item contains:
1361
(utf8_relpath, utf8_name, kind, lstatvalue, native_abspath)
1363
raise NotImplementedError(self.read_dir)
1366
_selected_dir_reader = None
1369
def _walkdirs_utf8(top, prefix=""):
1370
"""Yield data about all the directories in a tree.
1372
This yields the same information as walkdirs() only each entry is yielded
1373
in utf-8. On platforms which have a filesystem encoding of utf8 the paths
1374
are returned as exact byte-strings.
1376
:return: yields a tuple of (dir_info, [file_info])
1377
dir_info is (utf8_relpath, path-from-top)
1378
file_info is (utf8_relpath, utf8_name, kind, lstat, path-from-top)
1379
if top is an absolute path, path-from-top is also an absolute path.
1380
path-from-top might be unicode or utf8, but it is the correct path to
1381
pass to os functions to affect the file in question. (such as os.lstat)
1383
global _selected_dir_reader
1384
if _selected_dir_reader is None:
1385
fs_encoding = _fs_enc.upper()
1386
if sys.platform == "win32" and win32utils.winver == 'Windows NT':
1387
# Win98 doesn't have unicode apis like FindFirstFileW
1388
# TODO: We possibly could support Win98 by falling back to the
1389
# original FindFirstFile, and using TCHAR instead of WCHAR,
1390
# but that gets a bit tricky, and requires custom compiling
1393
from bzrlib._walkdirs_win32 import Win32ReadDir
1395
_selected_dir_reader = UnicodeDirReader()
1397
_selected_dir_reader = Win32ReadDir()
1398
elif fs_encoding not in ('UTF-8', 'US-ASCII', 'ANSI_X3.4-1968'):
1399
# ANSI_X3.4-1968 is a form of ASCII
1400
_selected_dir_reader = UnicodeDirReader()
1403
from bzrlib._readdir_pyx import UTF8DirReader
1405
# No optimised code path
1406
_selected_dir_reader = UnicodeDirReader()
1408
_selected_dir_reader = UTF8DirReader()
1409
# 0 - relpath, 1- basename, 2- kind, 3- stat, 4-toppath
1410
# But we don't actually uses 1-3 in pending, so set them to None
1411
pending = [[_selected_dir_reader.top_prefix_to_starting_dir(top, prefix)]]
1412
read_dir = _selected_dir_reader.read_dir
1413
_directory = _directory_kind
1415
relroot, _, _, _, top = pending[-1].pop()
1418
dirblock = sorted(read_dir(relroot, top))
1419
yield (relroot, top), dirblock
1420
# push the user specified dirs from dirblock
1421
next = [d for d in reversed(dirblock) if d[2] == _directory]
1423
pending.append(next)
1426
class UnicodeDirReader(DirReader):
1427
"""A dir reader for non-utf8 file systems, which transcodes."""
1429
__slots__ = ['_utf8_encode']
1432
self._utf8_encode = codecs.getencoder('utf8')
1434
def top_prefix_to_starting_dir(self, top, prefix=""):
1435
"""See DirReader.top_prefix_to_starting_dir."""
1436
return (safe_utf8(prefix), None, None, None, safe_unicode(top))
1438
def read_dir(self, prefix, top):
1439
"""Read a single directory from a non-utf8 file system.
1441
top, and the abspath element in the output are unicode, all other paths
1442
are utf8. Local disk IO is done via unicode calls to listdir etc.
1444
This is currently the fallback code path when the filesystem encoding is
1445
not UTF-8. It may be better to implement an alternative so that we can
1446
safely handle paths that are not properly decodable in the current
1449
See DirReader.read_dir for details.
1451
_utf8_encode = self._utf8_encode
1453
_listdir = os.listdir
1454
_kind_from_mode = file_kind_from_stat_mode
1457
relprefix = prefix + '/'
1460
top_slash = top + u'/'
1463
append = dirblock.append
1464
for name in sorted(_listdir(top)):
1466
name_utf8 = _utf8_encode(name)[0]
1467
except UnicodeDecodeError:
1468
raise errors.BadFilenameEncoding(
1469
_utf8_encode(relprefix)[0] + name, _fs_enc)
1470
abspath = top_slash + name
1471
statvalue = _lstat(abspath)
1472
kind = _kind_from_mode(statvalue.st_mode)
1473
append((relprefix + name_utf8, name_utf8, kind, statvalue, abspath))
1477
def copy_tree(from_path, to_path, handlers={}):
1478
"""Copy all of the entries in from_path into to_path.
1480
:param from_path: The base directory to copy.
1481
:param to_path: The target directory. If it does not exist, it will
1483
:param handlers: A dictionary of functions, which takes a source and
1484
destinations for files, directories, etc.
1485
It is keyed on the file kind, such as 'directory', 'symlink', or 'file'
1486
'file', 'directory', and 'symlink' should always exist.
1487
If they are missing, they will be replaced with 'os.mkdir()',
1488
'os.readlink() + os.symlink()', and 'shutil.copy2()', respectively.
1490
# Now, just copy the existing cached tree to the new location
1491
# We use a cheap trick here.
1492
# Absolute paths are prefixed with the first parameter
1493
# relative paths are prefixed with the second.
1494
# So we can get both the source and target returned
1495
# without any extra work.
1497
def copy_dir(source, dest):
1500
def copy_link(source, dest):
1501
"""Copy the contents of a symlink"""
1502
link_to = os.readlink(source)
1503
os.symlink(link_to, dest)
1505
real_handlers = {'file':shutil.copy2,
1506
'symlink':copy_link,
1507
'directory':copy_dir,
1509
real_handlers.update(handlers)
1511
if not os.path.exists(to_path):
1512
real_handlers['directory'](from_path, to_path)
1514
for dir_info, entries in walkdirs(from_path, prefix=to_path):
1515
for relpath, name, kind, st, abspath in entries:
1516
real_handlers[kind](abspath, relpath)
1519
def path_prefix_key(path):
1520
"""Generate a prefix-order path key for path.
1522
This can be used to sort paths in the same way that walkdirs does.
1524
return (dirname(path) , path)
1527
def compare_paths_prefix_order(path_a, path_b):
1528
"""Compare path_a and path_b to generate the same order walkdirs uses."""
1529
key_a = path_prefix_key(path_a)
1530
key_b = path_prefix_key(path_b)
1531
return cmp(key_a, key_b)
1534
_cached_user_encoding = None
1537
def get_user_encoding(use_cache=True):
1538
"""Find out what the preferred user encoding is.
1540
This is generally the encoding that is used for command line parameters
1541
and file contents. This may be different from the terminal encoding
1542
or the filesystem encoding.
1544
:param use_cache: Enable cache for detected encoding.
1545
(This parameter is turned on by default,
1546
and required only for selftesting)
1548
:return: A string defining the preferred user encoding
1550
global _cached_user_encoding
1551
if _cached_user_encoding is not None and use_cache:
1552
return _cached_user_encoding
1554
if sys.platform == 'darwin':
1555
# python locale.getpreferredencoding() always return
1556
# 'mac-roman' on darwin. That's a lie.
1557
sys.platform = 'posix'
1559
if os.environ.get('LANG', None) is None:
1560
# If LANG is not set, we end up with 'ascii', which is bad
1561
# ('mac-roman' is more than ascii), so we set a default which
1562
# will give us UTF-8 (which appears to work in all cases on
1563
# OSX). Users are still free to override LANG of course, as
1564
# long as it give us something meaningful. This work-around
1565
# *may* not be needed with python 3k and/or OSX 10.5, but will
1566
# work with them too -- vila 20080908
1567
os.environ['LANG'] = 'en_US.UTF-8'
1570
sys.platform = 'darwin'
1575
user_encoding = locale.getpreferredencoding()
1576
except locale.Error, e:
1577
sys.stderr.write('bzr: warning: %s\n'
1578
' Could not determine what text encoding to use.\n'
1579
' This error usually means your Python interpreter\n'
1580
' doesn\'t support the locale set by $LANG (%s)\n'
1581
" Continuing with ascii encoding.\n"
1582
% (e, os.environ.get('LANG')))
1583
user_encoding = 'ascii'
1585
# Windows returns 'cp0' to indicate there is no code page. So we'll just
1586
# treat that as ASCII, and not support printing unicode characters to the
1589
# For python scripts run under vim, we get '', so also treat that as ASCII
1590
if user_encoding in (None, 'cp0', ''):
1591
user_encoding = 'ascii'
1595
codecs.lookup(user_encoding)
1597
sys.stderr.write('bzr: warning:'
1598
' unknown encoding %s.'
1599
' Continuing with ascii encoding.\n'
1602
user_encoding = 'ascii'
1605
_cached_user_encoding = user_encoding
1607
return user_encoding
1610
def get_host_name():
1611
"""Return the current unicode host name.
1613
This is meant to be used in place of socket.gethostname() because that
1614
behaves inconsistently on different platforms.
1616
if sys.platform == "win32":
1618
return win32utils.get_host_name()
1621
return socket.gethostname().decode(get_user_encoding())
1624
def recv_all(socket, bytes):
1625
"""Receive an exact number of bytes.
1627
Regular Socket.recv() may return less than the requested number of bytes,
1628
dependning on what's in the OS buffer. MSG_WAITALL is not available
1629
on all platforms, but this should work everywhere. This will return
1630
less than the requested amount if the remote end closes.
1632
This isn't optimized and is intended mostly for use in testing.
1635
while len(b) < bytes:
1636
new = until_no_eintr(socket.recv, bytes - len(b))
1643
def send_all(socket, bytes, report_activity=None):
1644
"""Send all bytes on a socket.
1646
Regular socket.sendall() can give socket error 10053 on Windows. This
1647
implementation sends no more than 64k at a time, which avoids this problem.
1649
:param report_activity: Call this as bytes are read, see
1650
Transport._report_activity
1653
for pos in xrange(0, len(bytes), chunk_size):
1654
block = bytes[pos:pos+chunk_size]
1655
if report_activity is not None:
1656
report_activity(len(block), 'write')
1657
until_no_eintr(socket.sendall, block)
1660
def dereference_path(path):
1661
"""Determine the real path to a file.
1663
All parent elements are dereferenced. But the file itself is not
1665
:param path: The original path. May be absolute or relative.
1666
:return: the real path *to* the file
1668
parent, base = os.path.split(path)
1669
# The pathjoin for '.' is a workaround for Python bug #1213894.
1670
# (initial path components aren't dereferenced)
1671
return pathjoin(realpath(pathjoin('.', parent)), base)
1674
def supports_mapi():
1675
"""Return True if we can use MAPI to launch a mail client."""
1676
return sys.platform == "win32"
1679
def resource_string(package, resource_name):
1680
"""Load a resource from a package and return it as a string.
1682
Note: Only packages that start with bzrlib are currently supported.
1684
This is designed to be a lightweight implementation of resource
1685
loading in a way which is API compatible with the same API from
1687
http://peak.telecommunity.com/DevCenter/PkgResources#basic-resource-access.
1688
If and when pkg_resources becomes a standard library, this routine
1691
# Check package name is within bzrlib
1692
if package == "bzrlib":
1693
resource_relpath = resource_name
1694
elif package.startswith("bzrlib."):
1695
package = package[len("bzrlib."):].replace('.', os.sep)
1696
resource_relpath = pathjoin(package, resource_name)
1698
raise errors.BzrError('resource package %s not in bzrlib' % package)
1700
# Map the resource to a file and read its contents
1701
base = dirname(bzrlib.__file__)
1702
if getattr(sys, 'frozen', None): # bzr.exe
1703
base = abspath(pathjoin(base, '..', '..'))
1704
filename = pathjoin(base, resource_relpath)
1705
return open(filename, 'rU').read()
1708
def file_kind_from_stat_mode_thunk(mode):
1709
global file_kind_from_stat_mode
1710
if file_kind_from_stat_mode is file_kind_from_stat_mode_thunk:
1712
from bzrlib._readdir_pyx import UTF8DirReader
1713
file_kind_from_stat_mode = UTF8DirReader().kind_from_mode
1715
from bzrlib._readdir_py import (
1716
_kind_from_mode as file_kind_from_stat_mode
1718
return file_kind_from_stat_mode(mode)
1719
file_kind_from_stat_mode = file_kind_from_stat_mode_thunk
1722
def file_kind(f, _lstat=os.lstat):
1724
return file_kind_from_stat_mode(_lstat(f).st_mode)
1726
if getattr(e, 'errno', None) in (errno.ENOENT, errno.ENOTDIR):
1727
raise errors.NoSuchFile(f)
1731
def until_no_eintr(f, *a, **kw):
1732
"""Run f(*a, **kw), retrying if an EINTR error occurs."""
1733
# Borrowed from Twisted's twisted.python.util.untilConcludes function.
1737
except (IOError, OSError), e:
1738
if e.errno == errno.EINTR:
1742
def re_compile_checked(re_string, flags=0, where=""):
1743
"""Return a compiled re, or raise a sensible error.
1745
This should only be used when compiling user-supplied REs.
1747
:param re_string: Text form of regular expression.
1748
:param flags: eg re.IGNORECASE
1749
:param where: Message explaining to the user the context where
1750
it occurred, eg 'log search filter'.
1752
# from https://bugs.launchpad.net/bzr/+bug/251352
1754
re_obj = re.compile(re_string, flags)
1759
where = ' in ' + where
1760
# despite the name 'error' is a type
1761
raise errors.BzrCommandError('Invalid regular expression%s: %r: %s'
1762
% (where, re_string, e))
1765
if sys.platform == "win32":
1768
return msvcrt.getch()
1773
fd = sys.stdin.fileno()
1774
settings = termios.tcgetattr(fd)
1777
ch = sys.stdin.read(1)
1779
termios.tcsetattr(fd, termios.TCSADRAIN, settings)
623
return os.name != "nt"