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
|
# Copyright (C) 2008 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from bzrlib import (
merge3,
osutils,
pack,
transform,
)
class ShelfCreator(object):
"""Create a transform to shelve objects and its inverse."""
def __init__(self, work_tree, target_tree, file_list=None):
"""Constructor.
:param work_tree: The working tree to apply changes to
:param target_tree: The tree to make the working tree more similar to.
:param file_list: The files to make more similar to the target.
"""
self.work_tree = work_tree
self.work_transform = transform.TreeTransform(work_tree)
self.target_tree = target_tree
self.shelf_transform = transform.TransformPreview(self.target_tree)
self.renames = {}
self.creation = {}
self.deletion = {}
self.iter_changes = work_tree.iter_changes(self.target_tree,
specific_files=file_list)
def iter_shelvable(self):
"""Iterable of tuples describing shelvable changes.
As well as generating the tuples, this updates several members.
Tuples may be:
('add file', file_id, work_kind, work_path)
('delete file', file_id, target_kind, target_path)
('rename', file_id, target_path, work_path)
('change kind', file_id, target_kind, work_kind, target_path)
('modify text', file_id)
"""
for (file_id, paths, changed, versioned, parents, names, kind,
executable) in self.iter_changes:
if kind[0] is None or versioned[0] == False:
self.creation[file_id] = (kind[1], names[1], parents[1],
versioned)
yield ('add file', file_id, kind[1], paths[1])
elif kind[1] is None or versioned[0] == False:
self.deletion[file_id] = (kind[0], names[0], parents[0],
versioned)
yield ('delete file', file_id, kind[0], paths[0])
else:
if names[0] != names[1] or parents[0] != parents[1]:
self.renames[file_id] = (names, parents)
yield ('rename', file_id) + paths
if kind[0] != kind [1]:
yield ('change kind', file_id, kind[0], kind[1], paths[0])
elif changed:
yield ('modify text', file_id)
def shelve_rename(self, file_id):
"""Shelve a file rename.
:param file_id: The file id of the file to shelve the renaming of.
"""
names, parents = self.renames[file_id]
w_trans_id = self.work_transform.trans_id_file_id(file_id)
work_parent = self.work_transform.trans_id_file_id(parents[0])
self.work_transform.adjust_path(names[0], work_parent, w_trans_id)
s_trans_id = self.shelf_transform.trans_id_file_id(file_id)
shelf_parent = self.shelf_transform.trans_id_file_id(parents[1])
self.shelf_transform.adjust_path(names[1], shelf_parent, s_trans_id)
def shelve_lines(self, file_id, new_lines):
"""Shelve text changes to a file, using provided lines.
:param file_id: The file id of the file to shelve the text of.
:param new_lines: The lines that the file should have due to shelving.
"""
w_trans_id = self.work_transform.trans_id_file_id(file_id)
self.work_transform.delete_contents(w_trans_id)
self.work_transform.create_file(new_lines, w_trans_id)
s_trans_id = self.shelf_transform.trans_id_file_id(file_id)
self.shelf_transform.delete_contents(s_trans_id)
inverse_lines = self._inverse_lines(new_lines, file_id)
self.shelf_transform.create_file(inverse_lines, s_trans_id)
@staticmethod
def _content_from_tree(tt, tree, file_id):
trans_id = tt.trans_id_file_id(file_id)
tt.delete_contents(trans_id)
transform.create_from_tree(tt, trans_id, tree, file_id)
def shelve_content_change(self, file_id):
"""Shelve a kind change or binary file content change.
:param file_id: The file id of the file to shelve the content change
of.
"""
self._content_from_tree(self.work_transform, self.target_tree, file_id)
self._content_from_tree(self.shelf_transform, self.work_tree, file_id)
def shelve_creation(self, file_id):
"""Shelve creation of a file.
This handles content and inventory id.
:param file_id: The file_id of the file to shelve creation of.
"""
kind, name, parent, versioned = self.creation[file_id]
version = not versioned[0]
self._shelve_creation(self.work_tree, file_id, self.work_transform,
self.shelf_transform, kind, name, parent,
version)
def shelve_deletion(self, file_id):
"""Shelve deletion of a file.
This handles content and inventory id.
:param file_id: The file_id of the file to shelve deletion of.
"""
kind, name, parent, versioned = self.deletion[file_id]
existing_path = self.target_tree.id2path(file_id)
if not self.work_tree.has_filename(existing_path):
existing_path = None
version = not versioned[1]
self._shelve_creation(self.target_tree, file_id, self.shelf_transform,
self.work_transform, kind, name, parent,
version, existing_path=existing_path)
def _shelve_creation(self, tree, file_id, from_transform, to_transform,
kind, name, parent, version, existing_path=None):
w_trans_id = from_transform.trans_id_file_id(file_id)
if parent is not None and kind is not None:
from_transform.delete_contents(w_trans_id)
from_transform.unversion_file(w_trans_id)
if existing_path is not None:
s_trans_id = to_transform.trans_id_tree_path(existing_path)
else:
s_trans_id = to_transform.trans_id_file_id(file_id)
if parent is not None:
s_parent_id = to_transform.trans_id_file_id(parent)
to_transform.adjust_path(name, s_parent_id, s_trans_id)
if existing_path is None:
if kind is None:
to_transform.create_file('', s_trans_id)
else:
transform.create_from_tree(to_transform, s_trans_id,
tree, file_id)
if version:
to_transform.version_file(file_id, s_trans_id)
def read_tree_lines(self, tree, file_id):
"""Read text lines from a tree.
(Tree.get_file_lines is not an official API)
"""
return osutils.split_lines(tree.get_file_text(file_id))
def _inverse_lines(self, new_lines, file_id):
"""Produce a version with only those changes removed from new_lines."""
target_lines = self.target_tree.get_file_lines(file_id)
work_lines = self.read_tree_lines(self.work_tree, file_id)
return merge3.Merge3(new_lines, target_lines, work_lines).merge_lines()
def finalize(self):
"""Release all resources used by this ShelfCreator."""
self.work_transform.finalize()
self.shelf_transform.finalize()
def transform(self):
"""Shelve changes from working tree."""
self.work_transform.apply()
def make_shelf_filename(self):
"""Generate a filename for a shelf."""
transport = self.work_tree.bzrdir.root_transport.clone('.shelf2')
transport.ensure_base()
return transport.local_abspath('01')
def write_shelf(self):
"""Serialize the shelved changes to a file.
:return: the filename of the written file.
"""
filename = self.make_shelf_filename()
shelf_file = open(filename, 'wb')
try:
serializer = pack.ContainerSerialiser()
shelf_file.write(serializer.begin())
for bytes in self.shelf_transform.serialize(serializer):
shelf_file.write(bytes)
shelf_file.write(serializer.end())
finally:
shelf_file.close()
return filename
|