1
# Copyright (C) 2006 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
17
"""Implementation of Transport that adapts another transport to be readonly."""
19
from bzrlib.errors import TransportNotPossible, NoSmartServer, NoSmartMedium
20
from bzrlib.transport.decorator import TransportDecorator, DecoratorServer
23
class ReadonlyTransportDecorator(TransportDecorator):
24
"""A decorator that can convert any transport to be readonly.
26
This is requested via the 'readonly+' prefix to get_transport().
29
def append_file(self, relpath, f, mode=None):
30
"""See Transport.append_file()."""
31
raise TransportNotPossible('readonly transport')
33
def append_bytes(self, relpath, bytes, mode=None):
34
"""See Transport.append_bytes()."""
35
raise TransportNotPossible('readonly transport')
38
def _get_url_prefix(self):
39
"""Readonly transport decorators are invoked via 'readonly+'"""
42
def delete(self, relpath):
43
"""See Transport.delete()."""
44
raise TransportNotPossible('readonly transport')
46
def delete_tree(self, relpath):
47
"""See Transport.delete_tree()."""
48
raise TransportNotPossible('readonly transport')
50
def put_file(self, relpath, f, mode=None):
51
"""See Transport.put_file()."""
52
raise TransportNotPossible('readonly transport')
54
def put_bytes(self, relpath, bytes, mode=None):
55
"""See Transport.put_bytes()."""
56
raise TransportNotPossible('readonly transport')
58
def mkdir(self, relpath, mode=None):
59
"""See Transport.mkdir()."""
60
raise TransportNotPossible('readonly transport')
62
def is_readonly(self):
63
"""See Transport.is_readonly."""
66
def rmdir(self, relpath):
67
"""See Transport.rmdir."""
68
raise TransportNotPossible('readonly transport')
70
def lock_write(self, relpath):
71
"""See Transport.lock_write."""
72
raise TransportNotPossible('readonly transport')
74
def get_smart_client(self):
75
raise NoSmartServer(self.base)
77
def get_smart_medium(self):
78
raise NoSmartMedium(self)
82
class ReadonlyServer(DecoratorServer):
83
"""Server for the ReadonlyTransportDecorator for testing with."""
85
def get_decorator_class(self):
86
return ReadonlyTransportDecorator
89
def get_test_permutations():
90
"""Return the permutations to be used in testing."""
91
return [(ReadonlyTransportDecorator, ReadonlyServer),