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# Copyright (C) 2005 Canonical Ltd
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# Copyright (C) 2005, 2006 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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## XXX: Can we do any better about making interrupted commits change
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## XXX: If we merged two versions of a file then we still need to
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## create a new version representing that merge, even if it didn't
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## change from the parent.
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## TODO: Read back the just-generated changeset, and make sure it
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## applies and recreates the right state.
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# XXX: Can we do any better about making interrupted commits change
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# TODO: Separate 'prepare' phase where we find a list of potentially
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# committed files. We then can then pause the commit to prompt for a
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# commit message, knowing the summary will be the same as what's
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# actually used for the commit. (But perhaps simpler to simply get
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# the tree status, then use that for a selective commit?)
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# The newly committed revision is going to have a shape corresponding
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# to that of the working inventory. Files that are not in the
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# working tree and that were in the predecessor are reported as
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# removed --- this can include files that were either removed from the
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# inventory or deleted in the working tree. If they were only
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# deleted from disk, they are removed from the working inventory.
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# We then consider the remaining entries, which will be in the new
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# version. Directory entries are simply copied across. File entries
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# must be checked to see if a new version of the file should be
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# recorded. For each parent revision inventory, we check to see what
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# version of the file was present. If the file was present in at
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# least one tree, and if it was the same version in all the trees,
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# then we can just refer to that version. Otherwise, a new version
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# representing the merger of the file versions must be added.
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# TODO: Update hashcache before and after - or does the WorkingTree
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# TODO: Rather than mashing together the ancestry and storing it back,
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# perhaps the weave should have single method which does it all in one
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# go, avoiding a lot of redundant work.
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# TODO: Perhaps give a warning if one of the revisions marked as
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# merged is already in the ancestry, and then don't record it as a
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# TODO: If the file is newly merged but unchanged from the version it
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# merges from, then it should still be reported as newly added
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# relative to the basis revision.
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# TODO: Do checks that the tree can be committed *before* running the
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# editor; this should include checks for a pointless commit and for
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# unknown or missing files.
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# TODO: If commit fails, leave the message in a file somewhere.
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# TODO: Change the parameter 'rev_id' to 'revision_id' to be consistent with
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# the rest of the code; add a deprecation of the old name.
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from binascii import hexlify
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from cStringIO import StringIO
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from bzrlib.osutils import (local_time_offset, username,
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rand_bytes, compact_date, user_email,
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kind_marker, is_inside_any, quotefn,
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sha_string, sha_file, isdir, isfile)
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from bzrlib.branch import gen_file_id
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from bzrlib.errors import BzrError, PointlessCommit
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from bzrlib.revision import Revision, RevisionReference
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from bzrlib.trace import mutter, note
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import bzrlib.errors as errors
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from bzrlib.errors import (BzrError, PointlessCommit,
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from bzrlib.osutils import (kind_marker, isdir,isfile, is_inside_any,
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is_inside_or_parent_of_any,
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quotefn, sha_file, split_lines)
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from bzrlib.testament import Testament
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from bzrlib.trace import mutter, note, warning
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from bzrlib.xml5 import serializer_v5
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from bzrlib.inventory import Inventory
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from bzrlib.delta import compare_trees
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from bzrlib.weave import Weave
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from bzrlib.weavefile import read_weave, write_weave_v5
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from bzrlib.atomicfile import AtomicFile
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def commit(*args, **kwargs):
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"""Commit a new revision to a branch.
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Function-style interface for convenience of old callers.
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New code should use the Commit class instead.
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Commit().commit(*args, **kwargs)
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from bzrlib.inventory import Inventory, ROOT_ID, InventoryEntry
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from bzrlib import symbol_versioning
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from bzrlib.symbol_versioning import (deprecated_passed,
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from bzrlib.workingtree import WorkingTree
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class NullCommitReporter(object):
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"""I report on progress of a commit."""
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def added(self, path):
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def removed(self, path):
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def renamed(self, old_path, new_path):
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def snapshot_change(self, change, path):
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def completed(self, revno, rev_id):
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def deleted(self, file_id):
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def escaped(self, escape_count, message):
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def missing(self, path):
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def renamed(self, change, old_path, new_path):
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class ReportCommitToLog(NullCommitReporter):
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def added(self, path):
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note('added %s', path)
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def removed(self, path):
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note('removed %s', path)
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def renamed(self, old_path, new_path):
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note('renamed %s => %s', old_path, new_path)
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# this may be more useful if 'note' was replaced by an overridable
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# method on self, which would allow more trivial subclassing.
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# alternative, a callable could be passed in, allowing really trivial
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# reuse for some uis. RBC 20060511
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def snapshot_change(self, change, path):
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if change == 'unchanged':
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note("%s %s", change, path)
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def completed(self, revno, rev_id):
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note('Committed revision %d.', revno)
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def deleted(self, file_id):
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note('deleted %s', file_id)
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def escaped(self, escape_count, message):
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note("replaced %d control characters in message", escape_count)
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def missing(self, path):
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note('missing %s', path)
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def renamed(self, change, old_path, new_path):
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note('%s %s => %s', change, old_path, new_path)
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class Commit(object):
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working inventory.
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def __init__(self,
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if reporter is not None:
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self.reporter = reporter
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self.reporter = NullCommitReporter()
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if config is not None:
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branch=DEPRECATED_PARAMETER, message=None,
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specific_files=None,
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allow_pointless=True):
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allow_pointless=True,
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"""Commit working copy as a new revision.
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The basic approach is to add all the file texts into the
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store, then the inventory, then make a new revision pointing
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to that inventory and store that.
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This is not quite safe if the working copy changes during the
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commit; for the moment that is simply not allowed. A better
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approach is to make a temporary copy of the files before
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computing their hashes, and then add those hashes in turn to
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the inventory. This should mean at least that there are no
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broken hash pointers. There is no way we can get a snapshot
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of the whole directory at an instant. This would also have to
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be robust against files disappearing, moving, etc. So the
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whole thing is a bit hard.
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This raises PointlessCommit if there are no changes, no new merges,
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and allow_pointless is false.
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branch -- the deprecated branch to commit to. New callers should pass in
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message -- the commit message, a mandatory parameter
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timestamp -- if not None, seconds-since-epoch for a
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postdated/predated commit.
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If true, commit only those files.
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specific_files -- If true, commit only those files.
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If set, use this as the new revision id.
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rev_id -- If set, use this as the new revision id.
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Useful for test or import commands that need to tightly
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control what revisions are assigned. If you duplicate
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a revision id that exists elsewhere it is your own fault.
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If null (default), a time/random revision id is generated.
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allow_pointless -- If true (default), commit even if nothing
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has changed and no merges are recorded.
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strict -- If true, don't allow a commit if the working tree
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contains unknown files.
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revprops -- Properties for new revision
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:param local: Perform a local only commit.
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self.branch.lock_write()
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mutter('preparing to commit')
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if deprecated_passed(branch):
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symbol_versioning.warn("Commit.commit (branch, ...): The branch parameter is "
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"deprecated as of bzr 0.8. Please use working_tree= instead.",
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DeprecationWarning, stacklevel=2)
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self.work_tree = self.branch.bzrdir.open_workingtree()
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elif working_tree is None:
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raise BzrError("One of branch and working_tree must be passed into commit().")
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self.work_tree = working_tree
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self.branch = self.work_tree.branch
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raise BzrError("The message keyword parameter is required for commit().")
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self.bound_branch = None
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self.master_branch = None
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self.master_locked = False
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self.specific_files = specific_files
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self.allow_pointless = allow_pointless
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if timestamp is None:
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self.timestamp = time.time()
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self.timestamp = long(timestamp)
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if committer is None:
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self.committer = username(self.branch)
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assert isinstance(committer, basestring), type(committer)
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self.committer = committer
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self.timezone = local_time_offset()
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self.timezone = int(timezone)
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assert isinstance(message, basestring), type(message)
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self.message = message
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if reporter is None and self.reporter is None:
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self.reporter = NullCommitReporter()
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elif reporter is not None:
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self.reporter = reporter
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self.work_tree.lock_write()
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self.pb = bzrlib.ui.ui_factory.nested_progress_bar()
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# First walk over the working inventory; and both update that
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# and also build a new revision inventory. The revision
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# inventory needs to hold the text-id, sha1 and size of the
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# actual file versions committed in the revision. (These are
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# not present in the working inventory.) We also need to
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# detect missing/deleted files, and remove them from the
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self.work_tree = self.branch.working_tree()
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# Cannot commit with conflicts present.
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if len(self.work_tree.conflicts())>0:
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raise ConflictsInTree
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# setup the bound branch variables as needed.
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self._check_bound_branch()
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# check for out of date working trees
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first_tree_parent = self.work_tree.get_parent_ids()[0]
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# if there are no parents, treat our parent as 'None'
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# this is so that we still consier the master branch
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# - in a checkout scenario the tree may have no
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# parents but the branch may do.
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first_tree_parent = None
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master_last = self.master_branch.last_revision()
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if (master_last is not None and
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master_last != first_tree_parent):
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raise errors.OutOfDateTree(self.work_tree)
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# raise an exception as soon as we find a single unknown.
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for unknown in self.work_tree.unknowns():
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raise StrictCommitFailed()
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if self.config is None:
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self.config = self.branch.get_config()
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if isinstance(message, str):
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message = message.decode(bzrlib.user_encoding)
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assert isinstance(message, unicode), type(message)
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self.message = message
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self._escape_commit_message()
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self.work_inv = self.work_tree.inventory
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self.basis_tree = self.branch.basis_tree()
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self.basis_tree = self.work_tree.basis_tree()
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self.basis_inv = self.basis_tree.inventory
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self.pending_merges = self.branch.pending_merges()
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if self.pending_merges:
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raise NotImplementedError("sorry, can't commit merges to the weave format yet")
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if self.rev_id is None:
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self.rev_id = _gen_revision_id(self.branch, time.time())
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# todo: update hashcache
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self.delta = compare_trees(self.basis_tree, self.work_tree,
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specific_files=self.specific_files)
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if not (self.delta.has_changed()
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or self.allow_pointless
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or self.pending_merges):
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raise PointlessCommit()
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self.new_inv = self.basis_inv.copy()
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self.delta.show(sys.stdout)
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# one to finish, one for rev and inventory, and one for each
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# inventory entry, and the same for the new inventory.
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# note that this estimate is too long when we do a partial tree
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# commit which excludes some new files from being considered.
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# The estimate is corrected when we populate the new inv.
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self.pb_total = len(self.work_inv) + 5
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self._gather_parents()
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if len(self.parents) > 1 and self.specific_files:
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raise NotImplementedError('selected-file commit of merges is not supported yet: files %r',
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self.builder = self.branch.get_commit_builder(self.parents,
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self.config, timestamp, timezone, committer, revprops, rev_id)
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self._remove_deleted()
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self.branch._write_inventory(self.work_inv)
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self._record_inventory()
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self._make_revision()
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note('committted r%d {%s}', (self.branch.revno() + 1),
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self._populate_new_inv()
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self._report_deletes()
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self._check_pointless()
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self._emit_progress_update()
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# TODO: Now the new inventory is known, check for conflicts and
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# prompt the user for a commit message.
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# ADHB 2006-08-08: If this is done, populate_new_inv should not add
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# weave lines, because nothing should be recorded until it is known
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# that commit will succeed.
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self.builder.finish_inventory()
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self._emit_progress_update()
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self.rev_id = self.builder.commit(self.message)
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self._emit_progress_update()
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# revision data is in the local branch now.
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# upload revision data to the master.
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# this will propagate merged revisions too if needed.
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if self.bound_branch:
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self.master_branch.repository.fetch(self.branch.repository,
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revision_id=self.rev_id)
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# now the master has the revision data
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# 'commit' to the master first so a timeout here causes the local
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# branch to be out of date
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self.master_branch.append_revision(self.rev_id)
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# and now do the commit locally.
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self.branch.append_revision(self.rev_id)
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self.branch.set_pending_merges([])
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# if the builder gave us the revisiontree it created back, we
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# could use it straight away here.
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# TODO: implement this.
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self.work_tree.set_parent_trees([(self.rev_id,
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self.branch.repository.revision_tree(self.rev_id))])
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# now the work tree is up to date with the branch
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self.reporter.completed(self.branch.revno(), self.rev_id)
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if self.config.post_commit() is not None:
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hooks = self.config.post_commit().split(' ')
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# this would be nicer with twisted.python.reflect.namedAny
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result = eval(hook + '(branch, rev_id)',
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{'branch':self.branch,
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'rev_id':self.rev_id})
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self._emit_progress_update()
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def _record_inventory(self):
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serializer_v5.write_inventory(self.new_inv, inv_tmp)
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self.inv_sha1 = sha_string(inv_tmp.getvalue())
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self.branch.inventory_store.add(inv_tmp, self.rev_id)
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def _make_revision(self):
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"""Record a new revision object for this commit."""
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self.rev = Revision(timestamp=self.timestamp,
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timezone=self.timezone,
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committer=self.committer,
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message=self.message,
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inventory_sha1=self.inv_sha1,
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revision_id=self.rev_id)
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self.rev.parents = []
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precursor_id = self.branch.last_patch()
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self.rev.parents.append(RevisionReference(precursor_id))
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for merge_rev in self.pending_merges:
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rev.parents.append(RevisionReference(merge_rev))
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rev_tmp = tempfile.TemporaryFile()
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serializer_v5.write_revision(self.rev, rev_tmp)
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self.branch.revision_store.add(rev_tmp, self.rev_id)
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mutter('new revision_id is {%s}', self.rev_id)
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def _check_pointless(self):
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if self.allow_pointless:
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# A merge with no effect on files
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if len(self.parents) > 1:
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# work around the fact that a newly-initted tree does differ from its
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if len(self.builder.new_inventory) != len(self.basis_inv):
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if (len(self.builder.new_inventory) != 1 and
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self.builder.new_inventory != self.basis_inv):
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raise PointlessCommit()
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def _check_bound_branch(self):
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"""Check to see if the local branch is bound.
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If it is bound, then most of the commit will actually be
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done using the remote branch as the target branch.
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Only at the end will the local branch be updated.
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if self.local and not self.branch.get_bound_location():
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raise errors.LocalRequiresBoundBranch()
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self.master_branch = self.branch.get_master_branch()
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if not self.master_branch:
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# make this branch the reference branch for out of date checks.
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self.master_branch = self.branch
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# If the master branch is bound, we must fail
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master_bound_location = self.master_branch.get_bound_location()
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if master_bound_location:
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raise errors.CommitToDoubleBoundBranch(self.branch,
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self.master_branch, master_bound_location)
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# TODO: jam 20051230 We could automatically push local
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# commits to the remote branch if they would fit.
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# But for now, just require remote to be identical
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# Make sure the local branch is identical to the master
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master_rh = self.master_branch.revision_history()
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local_rh = self.branch.revision_history()
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if local_rh != master_rh:
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raise errors.BoundBranchOutOfDate(self.branch,
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# Now things are ready to change the master branch
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self.bound_branch = self.branch
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self.master_branch.lock_write()
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self.master_locked = True
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"""Cleanup any open locks, progress bars etc."""
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cleanups = [self._cleanup_bound_branch,
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self.work_tree.unlock,
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found_exception = None
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for cleanup in cleanups:
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# we want every cleanup to run no matter what.
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# so we have a catchall here, but we will raise the
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# last encountered exception up the stack: and
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# typically this will be useful enough.
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if found_exception is not None:
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# don't do a plan raise, because the last exception may have been
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# trashed, e is our sure-to-work exception even though it loses the
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# full traceback. XXX: RBC 20060421 perhaps we could check the
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# exc_info and if its the same one do a plain raise otherwise
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# 'raise e' as we do now.
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def _cleanup_bound_branch(self):
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"""Executed at the end of a try/finally to cleanup a bound branch.
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If the branch wasn't bound, this is a no-op.
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If it was, it resents self.branch to the local branch, instead
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if not self.bound_branch:
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if self.master_locked:
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self.master_branch.unlock()
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def _escape_commit_message(self):
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"""Replace xml-incompatible control characters."""
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# FIXME: RBC 20060419 this should be done by the revision
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# serialiser not by commit. Then we can also add an unescaper
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# in the deserializer and start roundtripping revision messages
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# precisely. See repository_implementations/test_repository.py
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# Python strings can include characters that can't be
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# represented in well-formed XML; escape characters that
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# aren't listed in the XML specification
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# (http://www.w3.org/TR/REC-xml/#NT-Char).
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self.message, escape_count = re.subn(
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u'[^\x09\x0A\x0D\u0020-\uD7FF\uE000-\uFFFD]+',
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lambda match: match.group(0).encode('unicode_escape'),
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self.reporter.escaped(escape_count, self.message)
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def _gather_parents(self):
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"""Record the parents of a merge for merge detection."""
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# TODO: Make sure that this list doesn't contain duplicate
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# entries and the order is preserved when doing this.
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self.parents = self.work_tree.get_parent_ids()
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self.parent_invs = []
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for revision in self.parents:
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if self.branch.repository.has_revision(revision):
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mutter('commit parent revision {%s}', revision)
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inventory = self.branch.repository.get_inventory(revision)
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self.parent_invs.append(inventory)
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mutter('commit parent ghost revision {%s}', revision)
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def _remove_deleted(self):
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"""Remove deleted files from the working and stored inventories."""
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for path, id, kind in self.delta.removed:
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if self.work_inv.has_id(id):
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del self.work_inv[id]
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if self.new_inv.has_id(id):
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def _store_files(self):
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"""Store new texts of modified/added files."""
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# We must make sure that directories are added before anything
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# inside them is added. the files within the delta report are
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# sorted by path so we know the directory will come before its
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for path, file_id, kind in self.delta.added:
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ie = self.work_inv[file_id].copy()
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self._store_file_text(file_id)
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for path, file_id, kind in self.delta.modified:
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self._store_file_text(file_id)
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for old_path, new_path, file_id, kind, text_modified in self.delta.renamed:
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if not text_modified:
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self._store_file_text(file_id)
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def _store_file_text(self, file_id):
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"""Store updated text for one modified or added file."""
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note('store new text for {%s} in revision {%s}',
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file_id, self.rev_id)
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new_lines = self.work_tree.get_file(file_id).readlines()
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if file_id in self.new_inv: # was in basis inventory
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ie = self.new_inv[file_id]
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assert ie.file_id == file_id
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assert file_id in self.basis_inv
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assert self.basis_inv[file_id].kind == 'file'
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old_version = self.basis_inv[file_id].text_version
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file_parents = [old_version]
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else: # new in this revision
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ie = self.work_inv[file_id].copy()
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assert file_id not in self.basis_inv
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assert ie.kind == 'file'
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self._add_text_to_weave(file_id, new_lines, file_parents)
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# make a new inventory entry for this file, using whatever
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# it had in the working copy, plus details on the new text
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ie.text_sha1 = _sha_strings(new_lines)
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ie.text_size = sum(map(len, new_lines))
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ie.text_version = self.rev_id
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ie.entry_version = self.rev_id
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def _add_text_to_weave(self, file_id, new_lines, parents):
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weave_fn = self.branch.controlfilename(['weaves', file_id+'.weave'])
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if os.path.exists(weave_fn):
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w = read_weave(file(weave_fn, 'rb'))
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# XXX: Should set the appropriate parents by looking for this file_id
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# in all revision parents
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parent_idxs = map(w.lookup, parents)
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w.add(self.rev_id, parent_idxs, new_lines)
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af = AtomicFile(weave_fn)
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write_weave_v5(w, af)
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def _gen_revision_id(branch, when):
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"""Return new revision-id."""
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s = '%s-%s-' % (user_email(branch), compact_date(when))
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s += hexlify(rand_bytes(8))
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def _sha_strings(strings):
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"""Return the sha-1 of concatenation of strings"""
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map(s.update, strings)
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"""Remove deleted files from the working inventories.
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This is done prior to taking the working inventory as the
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basis for the new committed inventory.
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This returns true if any files
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*that existed in the basis inventory* were deleted.
480
Files that were added and deleted
481
in the working copy don't matter.
483
specific = self.specific_files
485
deleted_paths = set()
486
for path, ie in self.work_inv.iter_entries():
487
if is_inside_any(deleted_paths, path):
488
# The tree will delete the required ids recursively.
490
if specific and not is_inside_any(specific, path):
492
if not self.work_tree.has_filename(path):
493
deleted_paths.add(path)
494
self.reporter.missing(path)
495
deleted_ids.append(ie.file_id)
496
self.work_tree.unversion(deleted_ids)
498
def _populate_new_inv(self):
499
"""Build revision inventory.
501
This creates a new empty inventory. Depending on
502
which files are selected for commit, and what is present in the
503
current tree, the new inventory is populated. inventory entries
504
which are candidates for modification have their revision set to
505
None; inventory entries that are carried over untouched have their
506
revision set to their prior value.
508
# ESEPARATIONOFCONCERNS: this function is diffing and using the diff
509
# results to create a new inventory at the same time, which results
510
# in bugs like #46635. Any reason not to use/enhance Tree.changes_from?
512
mutter("Selecting files for commit with filter %s", self.specific_files)
513
entries = self.work_inv.iter_entries()
514
if not self.builder.record_root_entry:
515
symbol_versioning.warn('CommitBuilders should support recording'
516
' the root entry as of bzr 0.10.', DeprecationWarning,
518
self.builder.new_inventory.add(self.basis_inv.root.copy())
520
self._emit_progress_update()
521
for path, new_ie in entries:
522
self._emit_progress_update()
523
file_id = new_ie.file_id
524
# mutter('check %s {%s}', path, file_id)
525
if (not self.specific_files or
526
is_inside_or_parent_of_any(self.specific_files, path)):
527
# mutter('%s selected for commit', path)
531
# mutter('%s not selected for commit', path)
532
if self.basis_inv.has_id(file_id):
533
ie = self.basis_inv[file_id].copy()
535
# this entry is new and not being committed
538
self.builder.record_entry_contents(ie, self.parent_invs,
539
path, self.work_tree)
540
# describe the nature of the change that has occurred relative to
541
# the basis inventory.
542
if (self.basis_inv.has_id(ie.file_id)):
543
basis_ie = self.basis_inv[ie.file_id]
546
change = ie.describe_change(basis_ie, ie)
547
if change in (InventoryEntry.RENAMED,
548
InventoryEntry.MODIFIED_AND_RENAMED):
549
old_path = self.basis_inv.id2path(ie.file_id)
550
self.reporter.renamed(change, old_path, path)
552
self.reporter.snapshot_change(change, path)
554
if not self.specific_files:
557
# ignore removals that don't match filespec
558
for path, new_ie in self.basis_inv.iter_entries():
559
if new_ie.file_id in self.work_inv:
561
if is_inside_any(self.specific_files, path):
565
self.builder.record_entry_contents(ie, self.parent_invs, path,
568
def _emit_progress_update(self):
569
"""Emit an update to the progress bar."""
570
self.pb.update("Committing", self.pb_count, self.pb_total)
573
def _report_deletes(self):
574
for path, ie in self.basis_inv.iter_entries():
575
if ie.file_id not in self.builder.new_inventory:
576
self.reporter.deleted(path)
added
removed
bzrlib/commit.py
