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Viewing changes to bzrlib/reconfigure.py

  • Committer: Ian Clatworthy
  • Date: 2007-12-11 02:07:30 UTC
  • mto: (3119.1.1 ianc-integration)
  • mto: This revision was merged to the branch mainline in revision 3120.
  • Revision ID: ian.clatworthy@internode.on.net-20071211020730-sdj4kj794dw0628e
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bzrlib/reconfigure.py
1
 
# Copyright (C) 2007-2010 Canonical Ltd
 
1
# Copyright (C) 2007 Canonical Ltd
2
2
#
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
12
12
#
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16
 
 
17
 
"""Reconfigure a bzrdir into a new tree/branch/repository layout.
18
 
 
19
 
Various types of reconfiguration operation are available either by
20
 
constructing a class or using a factory method on Reconfigure.
21
 
"""
22
 
 
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
16
 
 
17
"""Reconfigure a bzrdir into a new tree/branch/repository layout"""
23
18
 
24
19
from bzrlib import (
25
20
    branch,
26
 
    bzrdir,
27
21
    errors,
28
 
    trace,
29
 
    ui,
30
 
    urlutils,
31
22
    )
32
23
 
33
 
 
34
 
# TODO: common base class for all reconfigure operations, making no
35
 
# assumptions about what kind of change will be done.
36
 
 
37
 
 
38
 
class ReconfigureStackedOn(object):
39
 
    """Reconfigures a branch to be stacked on another branch."""
40
 
 
41
 
    def apply(self, bzrdir, stacked_on_url):
42
 
        branch = bzrdir.open_branch()
43
 
        # it may be a path relative to the cwd or a url; the branch wants
44
 
        # a path relative to itself...
45
 
        on_url = urlutils.relative_url(branch.base,
46
 
            urlutils.normalize_url(stacked_on_url))
47
 
        branch.lock_write()
48
 
        try:
49
 
            branch.set_stacked_on_url(on_url)
50
 
            if not trace.is_quiet():
51
 
                ui.ui_factory.note(
52
 
                    "%s is now stacked on %s\n"
53
 
                    % (branch.base, branch.get_stacked_on_url()))
54
 
        finally:
55
 
            branch.unlock()
56
 
 
57
 
 
58
 
class ReconfigureUnstacked(object):
59
 
 
60
 
    def apply(self, bzrdir):
61
 
        branch = bzrdir.open_branch()
62
 
        branch.lock_write()
63
 
        try:
64
 
            branch.set_stacked_on_url(None)
65
 
            if not trace.is_quiet():
66
 
                ui.ui_factory.note(
67
 
                    "%s is now not stacked\n"
68
 
                    % (branch.base,))
69
 
        finally:
70
 
            branch.unlock()
71
 
 
72
 
 
73
24
class Reconfigure(object):
74
25
 
75
26
    def __init__(self, bzrdir, new_bound_location=None):
76
27
        self.bzrdir = bzrdir
77
28
        self.new_bound_location = new_bound_location
78
 
        self.local_repository = None
79
29
        try:
80
30
            self.repository = self.bzrdir.find_repository()
81
31
        except errors.NoRepositoryPresent:
82
32
            self.repository = None
83
 
            self.local_repository = None
84
 
        else:
85
 
            if (self.repository.user_url == self.bzrdir.user_url):
86
 
                self.local_repository = self.repository
87
 
            else:
88
 
                self.local_repository = None
89
33
        try:
90
34
            branch = self.bzrdir.open_branch()
91
 
            if branch.user_url == bzrdir.user_url:
 
35
            if branch.bzrdir.root_transport.base == bzrdir.root_transport.base:
92
36
                self.local_branch = branch
93
37
                self.referenced_branch = None
94
38
            else:
111
55
        self._create_tree = False
112
56
        self._create_repository = False
113
57
        self._destroy_repository = False
114
 
        self._repository_trees = None
115
58
 
116
59
    @staticmethod
117
60
    def to_branch(bzrdir):
119
62
 
120
63
        :param bzrdir: The bzrdir to reconfigure
121
64
        :raise errors.AlreadyBranch: if bzrdir is already a branch
 
65
        :raise errors.ReconfigurationNotSupported: if bzrdir does not contain
 
66
            a branch or branch reference
122
67
        """
123
68
        reconfiguration = Reconfigure(bzrdir)
124
69
        reconfiguration._plan_changes(want_tree=False, want_branch=True,
133
78
 
134
79
        :param bzrdir: The bzrdir to reconfigure
135
80
        :raise errors.AlreadyTree: if bzrdir is already a tree
 
81
        :raise errors.ReconfigurationNotSupported: if bzrdir does not contain
 
82
            a branch or branch reference
136
83
        """
137
84
        reconfiguration = Reconfigure(bzrdir)
138
85
        reconfiguration._plan_changes(want_tree=True, want_branch=True,
148
95
        :param bzrdir: The bzrdir to reconfigure
149
96
        :param bound_location: The location the checkout should be bound to.
150
97
        :raise errors.AlreadyCheckout: if bzrdir is already a checkout
 
98
        :raise errors.ReconfigurationNotSupported: if bzrdir does not contain
 
99
            a branch or branch reference
151
100
        """
152
101
        reconfiguration = Reconfigure(bzrdir, bound_location)
153
102
        reconfiguration._plan_changes(want_tree=True, want_branch=True,
164
113
        :param bound_location: The location the checkout should be bound to.
165
114
        :raise errors.AlreadyLightweightCheckout: if bzrdir is already a
166
115
            lightweight checkout
 
116
        :raise errors.ReconfigurationNotSupported: if bzrdir does not contain
 
117
            a branch or branch reference
167
118
        """
168
119
        reconfiguration = klass(bzrdir, reference_location)
169
120
        reconfiguration._plan_changes(want_tree=True, want_branch=False,
172
123
            raise errors.AlreadyLightweightCheckout(bzrdir)
173
124
        return reconfiguration
174
125
 
175
 
    @classmethod
176
 
    def to_use_shared(klass, bzrdir):
177
 
        """Convert a standalone branch into a repository branch"""
178
 
        reconfiguration = klass(bzrdir)
179
 
        reconfiguration._set_use_shared(use_shared=True)
180
 
        if not reconfiguration.changes_planned():
181
 
            raise errors.AlreadyUsingShared(bzrdir)
182
 
        return reconfiguration
183
 
 
184
 
    @classmethod
185
 
    def to_standalone(klass, bzrdir):
186
 
        """Convert a repository branch into a standalone branch"""
187
 
        reconfiguration = klass(bzrdir)
188
 
        reconfiguration._set_use_shared(use_shared=False)
189
 
        if not reconfiguration.changes_planned():
190
 
            raise errors.AlreadyStandalone(bzrdir)
191
 
        return reconfiguration
192
 
 
193
 
    @classmethod
194
 
    def set_repository_trees(klass, bzrdir, with_trees):
195
 
        """Adjust a repository's working tree presence default"""
196
 
        reconfiguration = klass(bzrdir)
197
 
        if not reconfiguration.repository.is_shared():
198
 
            raise errors.ReconfigurationNotSupported(reconfiguration.bzrdir)
199
 
        if with_trees and reconfiguration.repository.make_working_trees():
200
 
            raise errors.AlreadyWithTrees(bzrdir)
201
 
        elif (not with_trees
202
 
              and not reconfiguration.repository.make_working_trees()):
203
 
            raise errors.AlreadyWithNoTrees(bzrdir)
204
 
        else:
205
 
            reconfiguration._repository_trees = with_trees
206
 
        return reconfiguration
207
 
 
208
126
    def _plan_changes(self, want_tree, want_branch, want_bound,
209
127
                      want_reference):
210
128
        """Determine which changes are needed to assume the configuration"""
212
130
            raise errors.ReconfigurationNotSupported(self.bzrdir)
213
131
        if want_branch and want_reference:
214
132
            raise errors.ReconfigurationNotSupported(self.bzrdir)
 
133
        if (want_branch or want_reference) and (self.local_branch is None and
 
134
                                                self.referenced_branch
 
135
                                                is None):
 
136
            raise errors.ReconfigurationNotSupported(self.bzrdir)
215
137
        if self.repository is None:
216
138
            if not want_reference:
217
139
                self._create_repository = True
218
140
        else:
219
 
            if want_reference and (
220
 
                self.repository.user_url == self.bzrdir.user_url):
221
 
                if not self.repository.is_shared():
222
 
                    self._destroy_repository = True
 
141
            if want_reference and (self.repository.bzrdir.root_transport.base
 
142
                                   == self.bzrdir.root_transport.base):
 
143
                self._destroy_repository = True
223
144
        if self.referenced_branch is None:
224
145
            if want_reference:
225
146
                self._create_reference = True
226
 
                if self.local_branch is not None:
227
 
                    self._destroy_branch = True
228
147
        else:
229
148
            if not want_reference:
230
149
                self._destroy_reference = True
245
164
        if want_tree and self.tree is None:
246
165
            self._create_tree = True
247
166
 
248
 
    def _set_use_shared(self, use_shared=None):
249
 
        if use_shared is None:
250
 
            return
251
 
        if use_shared:
252
 
            if self.local_repository is not None:
253
 
                self._destroy_repository = True
254
 
        else:
255
 
            if self.local_repository is None:
256
 
                self._create_repository = True
257
 
 
258
167
    def changes_planned(self):
259
168
        """Return True if changes are planned, False otherwise"""
260
169
        return (self._unbind or self._bind or self._destroy_tree
261
170
                or self._create_tree or self._destroy_reference
262
 
                or self._create_branch or self._create_repository
263
 
                or self._create_reference or self._destroy_repository)
 
171
                or self._create_branch or self._create_repository)
264
172
 
265
173
    def _check(self):
266
174
        """Raise if reconfiguration would destroy local changes"""
267
 
        if self._destroy_tree and self.tree.has_changes():
 
175
        if self._destroy_tree:
 
176
            changes = self.tree.changes_from(self.tree.basis_tree())
 
177
            if changes.has_changed():
268
178
                raise errors.UncommittedChanges(self.tree)
269
 
        if self._create_reference and self.local_branch is not None:
270
 
            reference_branch = branch.Branch.open(self._select_bind_location())
271
 
            if (reference_branch.last_revision() !=
272
 
                self.local_branch.last_revision()):
273
 
                raise errors.UnsyncedBranches(self.bzrdir, reference_branch)
274
179
 
275
180
    def _select_bind_location(self):
276
181
        """Select a location to bind or create a reference to.
315
220
        if not force:
316
221
            self._check()
317
222
        if self._create_repository:
318
 
            if self.local_branch and not self._destroy_branch:
319
 
                old_repo = self.local_branch.repository
320
 
            elif self._create_branch and self.referenced_branch is not None:
321
 
                old_repo = self.referenced_branch.repository
322
 
            else:
323
 
                old_repo = None
324
 
            if old_repo is not None:
325
 
                repository_format = old_repo._format
326
 
            else:
327
 
                repository_format = None
328
 
            if repository_format is not None:
329
 
                repo = repository_format.initialize(self.bzrdir)
330
 
            else:
331
 
                repo = self.bzrdir.create_repository()
332
 
            if self.local_branch and not self._destroy_branch:
333
 
                repo.fetch(self.local_branch.repository,
334
 
                           self.local_branch.last_revision())
 
223
            repo = self.bzrdir.create_repository()
335
224
        else:
336
225
            repo = self.repository
337
 
        if self._create_branch and self.referenced_branch is not None:
 
226
        if self._create_branch:
338
227
            repo.fetch(self.referenced_branch.repository,
339
228
                       self.referenced_branch.last_revision())
340
 
        if self._create_reference:
341
 
            reference_branch = branch.Branch.open(self._select_bind_location())
342
 
        if self._destroy_repository:
343
 
            if self._create_reference:
344
 
                reference_branch.repository.fetch(self.repository)
345
 
            elif self.local_branch is not None and not self._destroy_branch:
346
 
                up = self.local_branch.user_transport.clone('..')
347
 
                up_bzrdir = bzrdir.BzrDir.open_containing_from_transport(up)[0]
348
 
                new_repo = up_bzrdir.find_repository()
349
 
                new_repo.fetch(self.repository)
350
 
        last_revision_info = None
351
229
        if self._destroy_reference:
352
 
            last_revision_info = self.referenced_branch.last_revision_info()
 
230
            reference_info = self.referenced_branch.last_revision_info()
353
231
            self.bzrdir.destroy_branch()
354
232
        if self._destroy_branch:
355
 
            last_revision_info = self.local_branch.last_revision_info()
356
 
            if self._create_reference:
357
 
                self.local_branch.tags.merge_to(reference_branch.tags)
 
233
            reference_info = self.local_branch.last_revision_info()
358
234
            self.bzrdir.destroy_branch()
359
235
        if self._create_branch:
360
236
            local_branch = self.bzrdir.create_branch()
361
 
            if last_revision_info is not None:
362
 
                local_branch.set_last_revision_info(*last_revision_info)
363
 
            if self._destroy_reference:
364
 
                self.referenced_branch.tags.merge_to(local_branch.tags)
365
 
                self.referenced_branch.update_references(local_branch)
 
237
            local_branch.set_last_revision_info(*reference_info)
366
238
        else:
367
239
            local_branch = self.local_branch
368
240
        if self._create_reference:
 
241
            reference_branch = branch.Branch.open(self._select_bind_location())
369
242
            format = branch.BranchReferenceFormat().initialize(self.bzrdir,
370
 
                target_branch=reference_branch)
 
243
                reference_branch)
371
244
        if self._destroy_tree:
372
245
            self.bzrdir.destroy_workingtree()
373
246
        if self._create_tree:
378
251
            bind_location = self._select_bind_location()
379
252
            local_branch.bind(branch.Branch.open(bind_location))
380
253
        if self._destroy_repository:
 
254
            if self._create_reference:
 
255
                reference_branch.repository.fetch(self.repository)
381
256
            self.bzrdir.destroy_repository()
382
 
        if self._repository_trees is not None:
383
 
            repo.set_make_working_trees(self._repository_trees)