1
1
# Copyright (C) 2005, 2006 Canonical Ltd
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
5
5
# the Free Software Foundation; either version 2 of the License, or
6
6
# (at your option) any later version.
8
8
# This program is distributed in the hope that it will be useful,
9
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
11
# GNU General Public License for more details.
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
17
"""Transport for the local filesystem.
19
This is a fairly thin wrapper on regular file IO."""
19
This is a fairly thin wrapper on regular file IO.
23
from stat import ST_MODE, S_ISDIR, ST_SIZE, S_IMODE
26
from bzrlib.lazy_import import lazy_import
27
lazy_import(globals(), """
24
from stat import ST_MODE, S_ISDIR, ST_SIZE
28
38
from bzrlib.trace import mutter
39
from bzrlib.transport import LateReadError
29
42
from bzrlib.transport import Transport, Server
30
from bzrlib.osutils import (abspath, realpath, normpath, pathjoin, rename,
31
check_legal_path, rmtree)
45
_append_flags = os.O_CREAT | os.O_APPEND | os.O_WRONLY | osutils.O_BINARY
46
_put_non_atomic_flags = os.O_CREAT | os.O_TRUNC | os.O_WRONLY | osutils.O_BINARY
34
49
class LocalTransport(Transport):
37
52
def __init__(self, base):
38
53
"""Set the base path where files will be stored."""
39
if base.startswith('file://'):
40
base = base[len('file://'):]
41
# realpath is incompatible with symlinks. When we traverse
42
# up we might be able to normpath stuff. RBC 20051003
43
base = normpath(abspath(base))
54
if not base.startswith('file://'):
55
symbol_versioning.warn(
56
"Instantiating LocalTransport with a filesystem path"
57
" is deprecated as of bzr 0.8."
58
" Please use bzrlib.transport.get_transport()"
59
" or pass in a file:// url.",
63
base = urlutils.local_path_to_url(base)
44
64
if base[-1] != '/':
67
# Special case : windows has no "root", but does have
68
# multiple lettered drives inside it. #240910
69
if sys.platform == 'win32' and base == 'file:///':
72
super(LocalTransport, self).__init__(base)
46
75
super(LocalTransport, self).__init__(base)
48
def should_cache(self):
76
self._local_base = urlutils.local_path_from_url(base)
51
78
def clone(self, offset=None):
52
79
"""Return a new LocalTransport with root at self.base + offset
53
Because the local filesystem does not require a connection,
80
Because the local filesystem does not require a connection,
54
81
we can just return a new object.
57
84
return LocalTransport(self.base)
59
return LocalTransport(self.abspath(offset))
86
abspath = self.abspath(offset)
87
if abspath == 'file://':
88
# fix upwalk for UNC path
89
# when clone from //HOST/path updir recursively
90
# we should stop at least at //HOST part
92
return LocalTransport(abspath)
94
def _abspath(self, relative_reference):
95
"""Return a path for use in os calls.
97
Several assumptions are made:
98
- relative_reference does not contain '..'
99
- relative_reference is url escaped.
101
if relative_reference in ('.', ''):
102
return self._local_base
103
return self._local_base + urlutils.unescape(relative_reference)
61
105
def abspath(self, relpath):
62
106
"""Return the full url to the given relative URL."""
63
assert isinstance(relpath, basestring), (type(relpath), relpath)
64
result = normpath(pathjoin(self.base, urllib.unquote(relpath)))
65
#if result[-1] != '/':
107
# TODO: url escape the result. RBC 20060523.
108
# jam 20060426 Using normpath on the real path, because that ensures
109
# proper handling of stuff like
110
path = osutils.normpath(osutils.pathjoin(
111
self._local_base, urlutils.unescape(relpath)))
112
# on windows, our _local_base may or may not have a drive specified
113
# (ie, it may be "/" or "c:/foo").
114
# If 'relpath' is '/' we *always* get back an abspath without
115
# the drive letter - but if our transport already has a drive letter,
116
# we want our abspaths to have a drive letter too - so handle that
118
if (sys.platform == "win32" and self._local_base[1:2] == ":"
120
path = self._local_base[:3]
122
return urlutils.local_path_to_url(path)
124
def local_abspath(self, relpath):
125
"""Transform the given relative path URL into the actual path on disk
127
This function only exists for the LocalTransport, since it is
128
the only one that has direct local access.
129
This is mostly for stuff like WorkingTree which needs to know
130
the local working directory. The returned path will always contain
131
forward slashes as the path separator, regardless of the platform.
133
This function is quite expensive: it calls realpath which resolves
136
absurl = self.abspath(relpath)
137
# mutter(u'relpath %s => base: %s, absurl %s', relpath, self.base, absurl)
138
return urlutils.local_path_from_url(absurl)
69
140
def relpath(self, abspath):
70
141
"""Return the local path portion from a given absolute path.
72
from bzrlib.osutils import relpath, strip_trailing_slash
73
143
if abspath is None:
76
return relpath(strip_trailing_slash(self.base),
77
strip_trailing_slash(abspath))
146
return urlutils.file_relpath(
147
urlutils.strip_trailing_slash(self.base),
148
urlutils.strip_trailing_slash(abspath))
79
150
def has(self, relpath):
80
return os.access(self.abspath(relpath), os.F_OK)
151
return os.access(self._abspath(relpath), os.F_OK)
82
153
def get(self, relpath):
83
154
"""Get the file at the given relative path.
85
156
:param relpath: The relative path to the file
158
canonical_url = self.abspath(relpath)
159
if canonical_url in transport._file_streams:
160
transport._file_streams[canonical_url].flush()
88
path = self.abspath(relpath)
162
path = self._abspath(relpath)
89
163
return open(path, 'rb')
90
164
except (IOError, OSError),e:
91
self._translate_error(e, path)
93
def put(self, relpath, f, mode=None):
94
"""Copy the file-like or string object into the location.
96
:param relpath: Location to put the contents, relative to base.
97
:param f: File-like or string object.
99
from bzrlib.atomicfile import AtomicFile
103
path = self.abspath(relpath)
104
check_legal_path(path)
105
fp = AtomicFile(path, 'wb', new_mode=mode)
106
except (IOError, OSError),e:
107
self._translate_error(e, path)
165
if e.errno == errno.EISDIR:
166
return LateReadError(relpath)
167
self._translate_error(e, path)
169
def put_file(self, relpath, f, mode=None):
170
"""Copy the file-like object into the location.
172
:param relpath: Location to put the contents, relative to base.
173
:param f: File-like object.
174
:param mode: The mode for the newly created file,
175
None means just use the default
180
path = self._abspath(relpath)
181
osutils.check_legal_path(path)
182
fp = atomicfile.AtomicFile(path, 'wb', new_mode=mode)
183
except (IOError, OSError),e:
184
self._translate_error(e, path)
186
length = self._pump(f, fp)
192
def put_bytes(self, relpath, bytes, mode=None):
193
"""Copy the string into the location.
195
:param relpath: Location to put the contents, relative to base.
201
path = self._abspath(relpath)
202
osutils.check_legal_path(path)
203
fp = atomicfile.AtomicFile(path, 'wb', new_mode=mode)
204
except (IOError, OSError),e:
205
self._translate_error(e, path)
213
def _put_non_atomic_helper(self, relpath, writer,
215
create_parent_dir=False,
217
"""Common functionality information for the put_*_non_atomic.
219
This tracks all the create_parent_dir stuff.
221
:param relpath: the path we are putting to.
222
:param writer: A function that takes an os level file descriptor
223
and writes whatever data it needs to write there.
224
:param mode: The final file mode.
225
:param create_parent_dir: Should we be creating the parent directory
228
abspath = self._abspath(relpath)
230
# os.open() will automatically use the umask
235
fd = os.open(abspath, _put_non_atomic_flags, local_mode)
236
except (IOError, OSError),e:
237
# We couldn't create the file, maybe we need to create
238
# the parent directory, and try again
239
if (not create_parent_dir
240
or e.errno not in (errno.ENOENT,errno.ENOTDIR)):
241
self._translate_error(e, relpath)
242
parent_dir = os.path.dirname(abspath)
244
self._translate_error(e, relpath)
245
self._mkdir(parent_dir, mode=dir_mode)
246
# We created the parent directory, lets try to open the
249
fd = os.open(abspath, _put_non_atomic_flags, local_mode)
250
except (IOError, OSError), e:
251
self._translate_error(e, relpath)
254
if mode is not None and mode != S_IMODE(st.st_mode):
255
# Because of umask, we may still need to chmod the file.
256
# But in the general case, we won't have to
257
os.chmod(abspath, mode)
262
def put_file_non_atomic(self, relpath, f, mode=None,
263
create_parent_dir=False,
265
"""Copy the file-like object into the target location.
267
This function is not strictly safe to use. It is only meant to
268
be used when you already know that the target does not exist.
269
It is not safe, because it will open and truncate the remote
270
file. So there may be a time when the file has invalid contents.
272
:param relpath: The remote location to put the contents.
273
:param f: File-like object.
274
:param mode: Possible access permissions for new file.
275
None means do not set remote permissions.
276
:param create_parent_dir: If we cannot create the target file because
277
the parent directory does not exist, go ahead and
278
create it, and then try again.
281
self._pump_to_fd(f, fd)
282
self._put_non_atomic_helper(relpath, writer, mode=mode,
283
create_parent_dir=create_parent_dir,
286
def put_bytes_non_atomic(self, relpath, bytes, mode=None,
287
create_parent_dir=False, dir_mode=None):
291
self._put_non_atomic_helper(relpath, writer, mode=mode,
292
create_parent_dir=create_parent_dir,
114
295
def iter_files_recursive(self):
115
296
"""Iter the relative paths of files in the transports sub-tree."""
307
def _mkdir(self, abspath, mode=None):
308
"""Create a real directory, filtering through mode"""
310
# os.mkdir() will filter through umask
315
os.mkdir(abspath, local_mode)
317
# It is probably faster to just do the chmod, rather than
318
# doing a stat, and then trying to compare
319
os.chmod(abspath, mode)
320
except (IOError, OSError),e:
321
self._translate_error(e, abspath)
126
323
def mkdir(self, relpath, mode=None):
127
324
"""Create a directory at the given path."""
130
path = self.abspath(relpath)
134
except (IOError, OSError),e:
135
self._translate_error(e, path)
137
def append(self, relpath, f, mode=None):
138
"""Append the text in the file-like object into the final
142
fp = open(self.abspath(relpath), 'ab')
144
os.chmod(self.abspath(relpath), mode)
325
self._mkdir(self._abspath(relpath), mode=mode)
327
def open_write_stream(self, relpath, mode=None):
328
"""See Transport.open_write_stream."""
329
# initialise the file
330
self.put_bytes_non_atomic(relpath, "", mode=mode)
331
abspath = self._abspath(relpath)
332
handle = open(abspath, 'wb')
334
self._check_mode_and_size(abspath, handle.fileno(), mode)
335
transport._file_streams[self.abspath(relpath)] = handle
336
return transport.FileFileStream(self, relpath, handle)
338
def _get_append_file(self, relpath, mode=None):
339
"""Call os.open() for the given relpath"""
340
file_abspath = self._abspath(relpath)
342
# os.open() will automatically use the umask
347
return file_abspath, os.open(file_abspath, _append_flags, local_mode)
145
348
except (IOError, OSError),e:
146
349
self._translate_error(e, relpath)
147
# win32 workaround (tell on an unwritten file returns 0)
351
def _check_mode_and_size(self, file_abspath, fd, mode=None):
352
"""Check the mode of the file, and return the current size"""
354
if mode is not None and mode != S_IMODE(st.st_mode):
355
# Because of umask, we may still need to chmod the file.
356
# But in the general case, we won't have to
357
os.chmod(file_abspath, mode)
360
def append_file(self, relpath, f, mode=None):
361
"""Append the text in the file-like object into the final location."""
362
file_abspath, fd = self._get_append_file(relpath, mode=mode)
364
result = self._check_mode_and_size(file_abspath, fd, mode=mode)
365
self._pump_to_fd(f, fd)
370
def append_bytes(self, relpath, bytes, mode=None):
371
"""Append the text in the string into the final location."""
372
file_abspath, fd = self._get_append_file(relpath, mode=mode)
374
result = self._check_mode_and_size(file_abspath, fd, mode=mode)
381
def _pump_to_fd(self, fromfile, to_fd):
382
"""Copy contents of one file to another."""
385
b = fromfile.read(BUFSIZE)
153
390
def copy(self, rel_from, rel_to):
154
391
"""Copy the item at rel_from to the location at rel_to"""
155
path_from = self.abspath(rel_from)
156
path_to = self.abspath(rel_to)
392
path_from = self._abspath(rel_from)
393
path_to = self._abspath(rel_to)
158
395
shutil.copy(path_from, path_to)
159
396
except (IOError, OSError),e:
284
class ScratchTransport(LocalTransport):
285
"""A transport that works in a temporary dir and cleans up after itself.
287
The dir only exists for the lifetime of the Python object.
288
Obviously you should not put anything precious in it.
526
class EmulatedWin32LocalTransport(LocalTransport):
527
"""Special transport for testing Win32 [UNC] paths on non-windows"""
529
def __init__(self, base):
532
super(LocalTransport, self).__init__(base)
533
self._local_base = urlutils._win32_local_path_from_url(base)
535
def abspath(self, relpath):
536
path = osutils.normpath(osutils.pathjoin(
537
self._local_base, urlutils.unescape(relpath)))
538
return urlutils._win32_local_path_to_url(path)
540
def clone(self, offset=None):
541
"""Return a new LocalTransport with root at self.base + offset
542
Because the local filesystem does not require a connection,
543
we can just return a new object.
546
return EmulatedWin32LocalTransport(self.base)
548
abspath = self.abspath(offset)
549
if abspath == 'file://':
550
# fix upwalk for UNC path
551
# when clone from //HOST/path updir recursively
552
# we should stop at least at //HOST part
554
return EmulatedWin32LocalTransport(abspath)
557
class LocalURLServer(Server):
558
"""A pretend server for local transports, using file:// urls.
560
Of course no actual server is required to access the local filesystem, so
561
this just exists to tell the test code how to get to it.
291
def __init__(self, base=None):
293
base = tempfile.mkdtemp()
294
super(ScratchTransport, self).__init__(base)
297
rmtree(self.base, ignore_errors=True)
298
mutter("%r destroyed" % self)
301
class LocalRelpathServer(Server):
302
"""A pretend server for local transports, using relpaths."""
305
"""See Transport.Server.get_url."""
309
class LocalAbspathServer(Server):
310
"""A pretend server for local transports, using absolute paths."""
313
"""See Transport.Server.get_url."""
314
return os.path.abspath("")
317
class LocalURLServer(Server):
318
"""A pretend server for local transports, using file:// urls."""
321
"""See Transport.Server.get_url."""
322
# FIXME: \ to / on windows
323
return "file://%s" % os.path.abspath("")
564
def start_server(self):
568
"""See Transport.Server.get_url."""
569
return urlutils.local_path_to_url('')
326
572
def get_test_permutations():
327
573
"""Return the permutations to be used in testing."""
328
return [(LocalTransport, LocalRelpathServer),
329
(LocalTransport, LocalAbspathServer),
330
575
(LocalTransport, LocalURLServer),
added
removed
bzrlib/transport/local.py
