1
# Copyright (C) 2005, 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
18
# XXX: Can we do any better about making interrupted commits change
21
# TODO: Separate 'prepare' phase where we find a list of potentially
22
# committed files. We then can then pause the commit to prompt for a
23
# commit message, knowing the summary will be the same as what's
24
# actually used for the commit. (But perhaps simpler to simply get
25
# the tree status, then use that for a selective commit?)
27
# The newly committed revision is going to have a shape corresponding
28
# to that of the working inventory. Files that are not in the
29
# working tree and that were in the predecessor are reported as
30
# removed --- this can include files that were either removed from the
31
# inventory or deleted in the working tree. If they were only
32
# deleted from disk, they are removed from the working inventory.
34
# We then consider the remaining entries, which will be in the new
35
# version. Directory entries are simply copied across. File entries
36
# must be checked to see if a new version of the file should be
37
# recorded. For each parent revision inventory, we check to see what
38
# version of the file was present. If the file was present in at
39
# least one tree, and if it was the same version in all the trees,
40
# then we can just refer to that version. Otherwise, a new version
41
# representing the merger of the file versions must be added.
43
# TODO: Update hashcache before and after - or does the WorkingTree
46
# TODO: Rather than mashing together the ancestry and storing it back,
47
# perhaps the weave should have single method which does it all in one
48
# go, avoiding a lot of redundant work.
50
# TODO: Perhaps give a warning if one of the revisions marked as
51
# merged is already in the ancestry, and then don't record it as a
54
# TODO: If the file is newly merged but unchanged from the version it
55
# merges from, then it should still be reported as newly added
56
# relative to the basis revision.
58
# TODO: Do checks that the tree can be committed *before* running the
59
# editor; this should include checks for a pointless commit and for
60
# unknown or missing files.
62
# TODO: If commit fails, leave the message in a file somewhere.
64
# TODO: Change the parameter 'rev_id' to 'revision_id' to be consistent with
65
# the rest of the code; add a deprecation of the old name.
72
from cStringIO import StringIO
79
from bzrlib.errors import (BzrError, PointlessCommit,
83
from bzrlib.osutils import (kind_marker, isdir,isfile, is_inside_any,
84
is_inside_or_parent_of_any,
85
quotefn, sha_file, split_lines)
86
from bzrlib.testament import Testament
87
from bzrlib.trace import mutter, note, warning
88
from bzrlib.xml5 import serializer_v5
89
from bzrlib.inventory import Inventory, ROOT_ID, InventoryEntry
90
from bzrlib import symbol_versioning
91
from bzrlib.symbol_versioning import (deprecated_passed,
94
from bzrlib.workingtree import WorkingTree
97
class NullCommitReporter(object):
98
"""I report on progress of a commit."""
100
def snapshot_change(self, change, path):
103
def completed(self, revno, rev_id):
106
def deleted(self, file_id):
109
def escaped(self, escape_count, message):
112
def missing(self, path):
115
def renamed(self, change, old_path, new_path):
119
class ReportCommitToLog(NullCommitReporter):
121
# this may be more useful if 'note' was replaced by an overridable
122
# method on self, which would allow more trivial subclassing.
123
# alternative, a callable could be passed in, allowing really trivial
124
# reuse for some uis. RBC 20060511
126
def snapshot_change(self, change, path):
127
if change == 'unchanged':
129
note("%s %s", change, path)
131
def completed(self, revno, rev_id):
132
note('Committed revision %d.', revno)
134
def deleted(self, file_id):
135
note('deleted %s', file_id)
137
def escaped(self, escape_count, message):
138
note("replaced %d control characters in message", escape_count)
140
def missing(self, path):
141
note('missing %s', path)
143
def renamed(self, change, old_path, new_path):
144
note('%s %s => %s', change, old_path, new_path)
147
class Commit(object):
148
"""Task of committing a new revision.
150
This is a MethodObject: it accumulates state as the commit is
151
prepared, and then it is discarded. It doesn't represent
152
historical revisions, just the act of recording a new one.
155
Modified to hold a list of files that have been deleted from
156
the working directory; these should be removed from the
162
if reporter is not None:
163
self.reporter = reporter
165
self.reporter = NullCommitReporter()
166
if config is not None:
172
branch=DEPRECATED_PARAMETER, message=None,
178
allow_pointless=True,
186
"""Commit working copy as a new revision.
188
branch -- the deprecated branch to commit to. New callers should pass in
191
message -- the commit message, a mandatory parameter
193
timestamp -- if not None, seconds-since-epoch for a
194
postdated/predated commit.
196
specific_files -- If true, commit only those files.
198
rev_id -- If set, use this as the new revision id.
199
Useful for test or import commands that need to tightly
200
control what revisions are assigned. If you duplicate
201
a revision id that exists elsewhere it is your own fault.
202
If null (default), a time/random revision id is generated.
204
allow_pointless -- If true (default), commit even if nothing
205
has changed and no merges are recorded.
207
strict -- If true, don't allow a commit if the working tree
208
contains unknown files.
210
revprops -- Properties for new revision
211
:param local: Perform a local only commit.
213
mutter('preparing to commit')
215
if deprecated_passed(branch):
216
symbol_versioning.warn("Commit.commit (branch, ...): The branch parameter is "
217
"deprecated as of bzr 0.8. Please use working_tree= instead.",
218
DeprecationWarning, stacklevel=2)
220
self.work_tree = self.branch.bzrdir.open_workingtree()
221
elif working_tree is None:
222
raise BzrError("One of branch and working_tree must be passed into commit().")
224
self.work_tree = working_tree
225
self.branch = self.work_tree.branch
227
raise BzrError("The message keyword parameter is required for commit().")
229
self.bound_branch = None
231
self.master_branch = None
232
self.master_locked = False
234
self.specific_files = specific_files
235
self.allow_pointless = allow_pointless
237
if reporter is None and self.reporter is None:
238
self.reporter = NullCommitReporter()
239
elif reporter is not None:
240
self.reporter = reporter
242
self.work_tree.lock_write()
243
self.pb = bzrlib.ui.ui_factory.nested_progress_bar()
245
# Cannot commit with conflicts present.
246
if len(self.work_tree.conflicts())>0:
247
raise ConflictsInTree
249
# setup the bound branch variables as needed.
250
self._check_bound_branch()
252
# check for out of date working trees
254
first_tree_parent = self.work_tree.get_parent_ids()[0]
256
# if there are no parents, treat our parent as 'None'
257
# this is so that we still consier the master branch
258
# - in a checkout scenario the tree may have no
259
# parents but the branch may do.
260
first_tree_parent = None
261
master_last = self.master_branch.last_revision()
262
if (master_last is not None and
263
master_last != first_tree_parent):
264
raise errors.OutOfDateTree(self.work_tree)
267
# raise an exception as soon as we find a single unknown.
268
for unknown in self.work_tree.unknowns():
269
raise StrictCommitFailed()
271
if self.config is None:
272
self.config = self.branch.get_config()
274
if isinstance(message, str):
275
message = message.decode(bzrlib.user_encoding)
276
assert isinstance(message, unicode), type(message)
277
self.message = message
278
self._escape_commit_message()
280
self.work_inv = self.work_tree.inventory
281
self.basis_tree = self.work_tree.basis_tree()
282
self.basis_inv = self.basis_tree.inventory
283
if specific_files is not None:
284
# Ensure specified files are versioned
285
# (We don't actually need the ids here)
286
tree.find_ids_across_trees(specific_files,
287
[self.basis_tree, self.work_tree])
288
# one to finish, one for rev and inventory, and one for each
289
# inventory entry, and the same for the new inventory.
290
# note that this estimate is too long when we do a partial tree
291
# commit which excludes some new files from being considered.
292
# The estimate is corrected when we populate the new inv.
293
self.pb_total = len(self.work_inv) + 5
296
self._gather_parents()
297
if len(self.parents) > 1 and self.specific_files:
298
raise NotImplementedError('selected-file commit of merges is not supported yet: files %r',
301
self.builder = self.branch.get_commit_builder(self.parents,
302
self.config, timestamp, timezone, committer, revprops, rev_id)
304
self._remove_deleted()
305
self._populate_new_inv()
306
self._report_deletes()
308
self._check_pointless()
310
self._emit_progress_update()
311
# TODO: Now the new inventory is known, check for conflicts and
312
# prompt the user for a commit message.
313
# ADHB 2006-08-08: If this is done, populate_new_inv should not add
314
# weave lines, because nothing should be recorded until it is known
315
# that commit will succeed.
316
self.builder.finish_inventory()
317
self._emit_progress_update()
318
self.rev_id = self.builder.commit(self.message)
319
self._emit_progress_update()
320
# revision data is in the local branch now.
322
# upload revision data to the master.
323
# this will propagate merged revisions too if needed.
324
if self.bound_branch:
325
self.master_branch.repository.fetch(self.branch.repository,
326
revision_id=self.rev_id)
327
# now the master has the revision data
328
# 'commit' to the master first so a timeout here causes the local
329
# branch to be out of date
330
self.master_branch.append_revision(self.rev_id)
332
# and now do the commit locally.
333
self.branch.append_revision(self.rev_id)
335
rev_tree = self.builder.revision_tree()
336
self.work_tree.set_parent_trees([(self.rev_id, rev_tree)])
337
# now the work tree is up to date with the branch
339
self.reporter.completed(self.branch.revno(), self.rev_id)
340
if self.config.post_commit() is not None:
341
hooks = self.config.post_commit().split(' ')
342
# this would be nicer with twisted.python.reflect.namedAny
344
result = eval(hook + '(branch, rev_id)',
345
{'branch':self.branch,
347
'rev_id':self.rev_id})
348
self._emit_progress_update()
353
def _check_pointless(self):
354
if self.allow_pointless:
356
# A merge with no effect on files
357
if len(self.parents) > 1:
359
# work around the fact that a newly-initted tree does differ from its
361
if len(self.builder.new_inventory) != len(self.basis_inv):
363
if (len(self.builder.new_inventory) != 1 and
364
self.builder.new_inventory != self.basis_inv):
366
raise PointlessCommit()
368
def _check_bound_branch(self):
369
"""Check to see if the local branch is bound.
371
If it is bound, then most of the commit will actually be
372
done using the remote branch as the target branch.
373
Only at the end will the local branch be updated.
375
if self.local and not self.branch.get_bound_location():
376
raise errors.LocalRequiresBoundBranch()
379
self.master_branch = self.branch.get_master_branch()
381
if not self.master_branch:
382
# make this branch the reference branch for out of date checks.
383
self.master_branch = self.branch
386
# If the master branch is bound, we must fail
387
master_bound_location = self.master_branch.get_bound_location()
388
if master_bound_location:
389
raise errors.CommitToDoubleBoundBranch(self.branch,
390
self.master_branch, master_bound_location)
392
# TODO: jam 20051230 We could automatically push local
393
# commits to the remote branch if they would fit.
394
# But for now, just require remote to be identical
397
# Make sure the local branch is identical to the master
398
master_rh = self.master_branch.revision_history()
399
local_rh = self.branch.revision_history()
400
if local_rh != master_rh:
401
raise errors.BoundBranchOutOfDate(self.branch,
404
# Now things are ready to change the master branch
406
self.bound_branch = self.branch
407
self.master_branch.lock_write()
408
self.master_locked = True
411
"""Cleanup any open locks, progress bars etc."""
412
cleanups = [self._cleanup_bound_branch,
413
self.work_tree.unlock,
415
found_exception = None
416
for cleanup in cleanups:
419
# we want every cleanup to run no matter what.
420
# so we have a catchall here, but we will raise the
421
# last encountered exception up the stack: and
422
# typically this will be useful enough.
425
if found_exception is not None:
426
# don't do a plan raise, because the last exception may have been
427
# trashed, e is our sure-to-work exception even though it loses the
428
# full traceback. XXX: RBC 20060421 perhaps we could check the
429
# exc_info and if its the same one do a plain raise otherwise
430
# 'raise e' as we do now.
433
def _cleanup_bound_branch(self):
434
"""Executed at the end of a try/finally to cleanup a bound branch.
436
If the branch wasn't bound, this is a no-op.
437
If it was, it resents self.branch to the local branch, instead
440
if not self.bound_branch:
442
if self.master_locked:
443
self.master_branch.unlock()
445
def _escape_commit_message(self):
446
"""Replace xml-incompatible control characters."""
447
# FIXME: RBC 20060419 this should be done by the revision
448
# serialiser not by commit. Then we can also add an unescaper
449
# in the deserializer and start roundtripping revision messages
450
# precisely. See repository_implementations/test_repository.py
452
# Python strings can include characters that can't be
453
# represented in well-formed XML; escape characters that
454
# aren't listed in the XML specification
455
# (http://www.w3.org/TR/REC-xml/#NT-Char).
456
self.message, escape_count = re.subn(
457
u'[^\x09\x0A\x0D\u0020-\uD7FF\uE000-\uFFFD]+',
458
lambda match: match.group(0).encode('unicode_escape'),
461
self.reporter.escaped(escape_count, self.message)
463
def _gather_parents(self):
464
"""Record the parents of a merge for merge detection."""
465
# TODO: Make sure that this list doesn't contain duplicate
466
# entries and the order is preserved when doing this.
467
self.parents = self.work_tree.get_parent_ids()
468
self.parent_invs = []
469
for revision in self.parents:
470
if self.branch.repository.has_revision(revision):
471
mutter('commit parent revision {%s}', revision)
472
inventory = self.branch.repository.get_inventory(revision)
473
self.parent_invs.append(inventory)
475
mutter('commit parent ghost revision {%s}', revision)
477
def _remove_deleted(self):
478
"""Remove deleted files from the working inventories.
480
This is done prior to taking the working inventory as the
481
basis for the new committed inventory.
483
This returns true if any files
484
*that existed in the basis inventory* were deleted.
485
Files that were added and deleted
486
in the working copy don't matter.
488
specific = self.specific_files
490
deleted_paths = set()
491
for path, ie in self.work_inv.iter_entries():
492
if is_inside_any(deleted_paths, path):
493
# The tree will delete the required ids recursively.
495
if specific and not is_inside_any(specific, path):
497
if not self.work_tree.has_filename(path):
498
deleted_paths.add(path)
499
self.reporter.missing(path)
500
deleted_ids.append(ie.file_id)
501
self.work_tree.unversion(deleted_ids)
503
def _populate_new_inv(self):
504
"""Build revision inventory.
506
This creates a new empty inventory. Depending on
507
which files are selected for commit, and what is present in the
508
current tree, the new inventory is populated. inventory entries
509
which are candidates for modification have their revision set to
510
None; inventory entries that are carried over untouched have their
511
revision set to their prior value.
513
# ESEPARATIONOFCONCERNS: this function is diffing and using the diff
514
# results to create a new inventory at the same time, which results
515
# in bugs like #46635. Any reason not to use/enhance Tree.changes_from?
517
mutter("Selecting files for commit with filter %s", self.specific_files)
518
entries = self.work_inv.iter_entries()
519
if not self.builder.record_root_entry:
520
symbol_versioning.warn('CommitBuilders should support recording'
521
' the root entry as of bzr 0.10.', DeprecationWarning,
523
self.builder.new_inventory.add(self.basis_inv.root.copy())
525
self._emit_progress_update()
526
for path, new_ie in entries:
527
self._emit_progress_update()
528
file_id = new_ie.file_id
529
# mutter('check %s {%s}', path, file_id)
530
if (not self.specific_files or
531
is_inside_or_parent_of_any(self.specific_files, path)):
532
# mutter('%s selected for commit', path)
536
# mutter('%s not selected for commit', path)
537
if self.basis_inv.has_id(file_id):
538
ie = self.basis_inv[file_id].copy()
540
# this entry is new and not being committed
543
self.builder.record_entry_contents(ie, self.parent_invs,
544
path, self.work_tree)
545
# describe the nature of the change that has occurred relative to
546
# the basis inventory.
547
if (self.basis_inv.has_id(ie.file_id)):
548
basis_ie = self.basis_inv[ie.file_id]
551
change = ie.describe_change(basis_ie, ie)
552
if change in (InventoryEntry.RENAMED,
553
InventoryEntry.MODIFIED_AND_RENAMED):
554
old_path = self.basis_inv.id2path(ie.file_id)
555
self.reporter.renamed(change, old_path, path)
557
self.reporter.snapshot_change(change, path)
559
if not self.specific_files:
562
# ignore removals that don't match filespec
563
for path, new_ie in self.basis_inv.iter_entries():
564
if new_ie.file_id in self.work_inv:
566
if is_inside_any(self.specific_files, path):
570
self.builder.record_entry_contents(ie, self.parent_invs, path,
573
def _emit_progress_update(self):
574
"""Emit an update to the progress bar."""
575
self.pb.update("Committing", self.pb_count, self.pb_total)
578
def _report_deletes(self):
579
for path, ie in self.basis_inv.iter_entries():
580
if ie.file_id not in self.builder.new_inventory:
581
self.reporter.deleted(path)
added
removed
bzrlib/commit.py
