1
# Copyright (C) 2005 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
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
16
"""Implementation of Transport for the local filesystem.
22
from stat import ST_MODE, S_ISDIR, ST_SIZE
25
from bzrlib.trace import mutter
26
from bzrlib.transport import Transport, register_transport, \
27
TransportError, NoSuchFile, FileExists
30
class LocalTransportError(TransportError):
34
class LocalTransport(Transport):
35
"""This is the transport agent for local filesystem access."""
37
def __init__(self, base):
38
"""Set the base path where files will be stored."""
39
if base.startswith('file://'):
41
# realpath is incompatible with symlinks. When we traverse
42
# up we might be able to normpath stuff. RBC 20051003
43
super(LocalTransport, self).__init__(
44
os.path.normpath(os.path.abspath(base)))
46
def should_cache(self):
49
def clone(self, offset=None):
50
"""Return a new LocalTransport with root at self.base + offset
51
Because the local filesystem does not require a connection,
52
we can just return a new object.
55
return LocalTransport(self.base)
57
return LocalTransport(self.abspath(offset))
59
def abspath(self, relpath):
60
"""Return the full url to the given relative path.
61
This can be supplied with a string or a list
63
if isinstance(relpath, basestring):
65
return os.path.join(self.base, *relpath)
67
def relpath(self, abspath):
68
"""Return the local path portion from a given absolute path.
70
from bzrlib.branch import _relpath
71
return _relpath(self.base, abspath)
73
def has(self, relpath):
74
return os.access(self.abspath(relpath), os.F_OK)
76
def get(self, relpath):
77
"""Get the file at the given relative path.
79
:param relpath: The relative path to the file
82
path = self.abspath(relpath)
83
return open(path, 'rb')
85
if e.errno in (errno.ENOENT, errno.ENOTDIR):
86
raise NoSuchFile('File or directory %r does not exist' % path, orig_error=e)
87
raise LocalTransportError(orig_error=e)
89
def put(self, relpath, f):
90
"""Copy the file-like or string object into the location.
92
:param relpath: Location to put the contents, relative to base.
93
:param f: File-like or string object.
95
from bzrlib.atomicfile import AtomicFile
98
path = self.abspath(relpath)
99
fp = AtomicFile(path, 'wb')
101
if e.errno == errno.ENOENT:
102
raise NoSuchFile('File %r does not exist' % path, orig_error=e)
103
raise LocalTransportError(orig_error=e)
110
def iter_files_recursive(self):
111
"""Iter the relative paths of files in the transports sub-tree."""
112
queue = list(self.list_dir('.'))
114
relpath = queue.pop(0)
115
st = self.stat(relpath)
116
if S_ISDIR(st[ST_MODE]):
117
for i, basename in enumerate(self.list_dir(relpath)):
118
queue.insert(i, relpath+'/'+basename)
122
def mkdir(self, relpath):
123
"""Create a directory at the given path."""
125
os.mkdir(self.abspath(relpath))
127
if e.errno == errno.EEXIST:
128
raise FileExists(orig_error=e)
129
elif e.errno == errno.ENOENT:
130
raise NoSuchFile(orig_error=e)
131
raise LocalTransportError(orig_error=e)
133
def append(self, relpath, f):
134
"""Append the text in the file-like object into the final
137
fp = open(self.abspath(relpath), 'ab')
140
def copy(self, rel_from, rel_to):
141
"""Copy the item at rel_from to the location at rel_to"""
143
path_from = self.abspath(rel_from)
144
path_to = self.abspath(rel_to)
146
shutil.copy(path_from, path_to)
148
raise LocalTransportError(orig_error=e)
150
def move(self, rel_from, rel_to):
151
"""Move the item at rel_from to the location at rel_to"""
152
path_from = self.abspath(rel_from)
153
path_to = self.abspath(rel_to)
156
os.rename(path_from, path_to)
158
raise LocalTransportError(orig_error=e)
160
def delete(self, relpath):
161
"""Delete the item at relpath"""
163
os.remove(self.abspath(relpath))
165
raise LocalTransportError(orig_error=e)
167
def copy_to(self, relpaths, other, pb=None):
168
"""Copy a set of entries from self into another Transport.
170
:param relpaths: A list/generator of entries to be copied.
172
if isinstance(other, LocalTransport):
173
# Both from & to are on the local filesystem
174
# Unfortunately, I can't think of anything faster than just
175
# copying them across, one by one :(
178
total = self._get_total(relpaths)
180
for path in relpaths:
181
self._update_pb(pb, 'copy-to', count, total)
182
shutil.copy(self.abspath(path), other.abspath(path))
186
return super(LocalTransport, self).copy_to(relpaths, other, pb=pb)
189
"""See Transport.listable."""
192
def list_dir(self, relpath):
193
"""Return a list of all files at the given location.
194
WARNING: many transports do not support this, so trying avoid using
195
it if at all possible.
198
return os.listdir(self.abspath(relpath))
200
raise LocalTransportError(orig_error=e)
202
def stat(self, relpath):
203
"""Return the stat information for a file.
206
return os.stat(self.abspath(relpath))
208
raise LocalTransportError(orig_error=e)
210
def lock_read(self, relpath):
211
"""Lock the given file for shared (read) access.
212
:return: A lock object, which should be passed to Transport.unlock()
214
from bzrlib.lock import ReadLock
215
return ReadLock(self.abspath(relpath))
217
def lock_write(self, relpath):
218
"""Lock the given file for exclusive (write) access.
219
WARNING: many transports do not support this, so trying avoid using it
221
:return: A lock object, which should be passed to Transport.unlock()
223
from bzrlib.lock import WriteLock
224
return WriteLock(self.abspath(relpath))
227
class ScratchTransport(LocalTransport):
228
"""A transport that works in a temporary dir and cleans up after itself.
230
The dir only exists for the lifetime of the Python object.
231
Obviously you should not put anything precious in it.
234
def __init__(self, base=None):
236
base = tempfile.mkdtemp()
237
super(ScratchTransport, self).__init__(base)
240
shutil.rmtree(self.base, ignore_errors=True)
241
mutter("%r destroyed" % self)
243
# If nothing else matches, try the LocalTransport
244
register_transport(None, LocalTransport)
245
register_transport('file://', LocalTransport)
added
removed
bzrlib/transport/local.py
