1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
# Copyright (C) 2005-2010 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Weave-era working tree objects."""
from cStringIO import StringIO
from bzrlib import (
conflicts as _mod_conflicts,
errors,
inventory,
osutils,
revision as _mod_revision,
transform,
xml5,
)
from bzrlib.decorators import needs_read_lock
from bzrlib.transport.local import LocalTransport
from bzrlib.workingtree import (
InventoryWorkingTree,
WorkingTreeFormat,
)
def get_conflicted_stem(path):
for suffix in _mod_conflicts.CONFLICT_SUFFIXES:
if path.endswith(suffix):
return path[:-len(suffix)]
class WorkingTreeFormat2(WorkingTreeFormat):
"""The second working tree format.
This format modified the hash cache from the format 1 hash cache.
"""
upgrade_recommended = True
requires_normalized_unicode_filenames = True
case_sensitive_filename = "Branch-FoRMaT"
missing_parent_conflicts = False
def get_format_description(self):
"""See WorkingTreeFormat.get_format_description()."""
return "Working tree format 2"
def _stub_initialize_on_transport(self, transport, file_mode):
"""Workaround: create control files for a remote working tree.
This ensures that it can later be updated and dealt with locally,
since BzrDirFormat6 and BzrDirFormat5 cannot represent dirs with
no working tree. (See bug #43064).
"""
sio = StringIO()
inv = inventory.Inventory()
xml5.serializer_v5.write_inventory(inv, sio, working=True)
sio.seek(0)
transport.put_file('inventory', sio, file_mode)
transport.put_bytes('pending-merges', '', file_mode)
def initialize(self, a_bzrdir, revision_id=None, from_branch=None,
accelerator_tree=None, hardlink=False):
"""See WorkingTreeFormat.initialize()."""
if not isinstance(a_bzrdir.transport, LocalTransport):
raise errors.NotLocalUrl(a_bzrdir.transport.base)
if from_branch is not None:
branch = from_branch
else:
branch = a_bzrdir.open_branch()
if revision_id is None:
revision_id = _mod_revision.ensure_null(branch.last_revision())
branch.lock_write()
try:
branch.generate_revision_history(revision_id)
finally:
branch.unlock()
inv = inventory.Inventory()
wt = WorkingTree2(a_bzrdir.root_transport.local_abspath('.'),
branch,
inv,
_internal=True,
_format=self,
_bzrdir=a_bzrdir,
_control_files=branch.control_files)
basis_tree = branch.repository.revision_tree(revision_id)
if basis_tree.inventory.root is not None:
wt.set_root_id(basis_tree.get_root_id())
# set the parent list and cache the basis tree.
if _mod_revision.is_null(revision_id):
parent_trees = []
else:
parent_trees = [(revision_id, basis_tree)]
wt.set_parent_trees(parent_trees)
transform.build_tree(basis_tree, wt)
return wt
def __init__(self):
super(WorkingTreeFormat2, self).__init__()
from bzrlib.plugins.weave_fmt.bzrdir import BzrDirFormat6
self._matchingbzrdir = BzrDirFormat6()
def open(self, a_bzrdir, _found=False):
"""Return the WorkingTree object for a_bzrdir
_found is a private parameter, do not use it. It is used to indicate
if format probing has already been done.
"""
if not _found:
# we are being called directly and must probe.
raise NotImplementedError
if not isinstance(a_bzrdir.transport, LocalTransport):
raise errors.NotLocalUrl(a_bzrdir.transport.base)
wt = WorkingTree2(a_bzrdir.root_transport.local_abspath('.'),
_internal=True,
_format=self,
_bzrdir=a_bzrdir,
_control_files=a_bzrdir.open_branch().control_files)
return wt
class WorkingTree2(InventoryWorkingTree):
"""This is the Format 2 working tree.
This was the first weave based working tree.
- uses os locks for locking.
- uses the branch last-revision.
"""
def __init__(self, *args, **kwargs):
super(WorkingTree2, self).__init__(*args, **kwargs)
# WorkingTree2 has more of a constraint that self._inventory must
# exist. Because this is an older format, we don't mind the overhead
# caused by the extra computation here.
# Newer WorkingTree's should only have self._inventory set when they
# have a read lock.
if self._inventory is None:
self.read_working_inventory()
def _get_check_refs(self):
"""Return the references needed to perform a check of this tree."""
return [('trees', self.last_revision())]
def lock_tree_write(self):
"""See WorkingTree.lock_tree_write().
In Format2 WorkingTrees we have a single lock for the branch and tree
so lock_tree_write() degrades to lock_write().
:return: An object with an unlock method which will release the lock
obtained.
"""
self.branch.lock_write()
try:
self._control_files.lock_write()
return self
except:
self.branch.unlock()
raise
def unlock(self):
# we share control files:
if self._control_files._lock_count == 3:
# do non-implementation specific cleanup
self._cleanup()
# _inventory_is_modified is always False during a read lock.
if self._inventory_is_modified:
self.flush()
self._write_hashcache_if_dirty()
# reverse order of locking.
try:
return self._control_files.unlock()
finally:
self.branch.unlock()
def _iter_conflicts(self):
conflicted = set()
for info in self.list_files():
path = info[0]
stem = get_conflicted_stem(path)
if stem is None:
continue
if stem not in conflicted:
conflicted.add(stem)
yield stem
@needs_read_lock
def conflicts(self):
conflicts = _mod_conflicts.ConflictList()
for conflicted in self._iter_conflicts():
text = True
try:
if osutils.file_kind(self.abspath(conflicted)) != "file":
text = False
except errors.NoSuchFile:
text = False
if text is True:
for suffix in ('.THIS', '.OTHER'):
try:
kind = osutils.file_kind(self.abspath(conflicted+suffix))
if kind != "file":
text = False
except errors.NoSuchFile:
text = False
if text == False:
break
ctype = {True: 'text conflict', False: 'contents conflict'}[text]
conflicts.append(_mod_conflicts.Conflict.factory(ctype,
path=conflicted,
file_id=self.path2id(conflicted)))
return conflicts
def set_conflicts(self, arg):
raise errors.UnsupportedOperation(self.set_conflicts, self)
def add_conflicts(self, arg):
raise errors.UnsupportedOperation(self.add_conflicts, self)
|