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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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# 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: 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, INVENTORY_FILEID, ANCESTRY_FILEID
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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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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, 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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if change == 'added' and path == '':
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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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message_callback=None):
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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 (it or message_callback is required)
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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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if message_callback is None:
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if message is not None:
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if isinstance(message, str):
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message = message.decode(bzrlib.user_encoding)
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message_callback = lambda x: message
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raise BzrError("The message or message_callback keyword"
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" 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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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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if specific_files is not None:
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# Ensure specified files are versioned
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# (We don't actually need the ids here)
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tree.find_ids_across_trees(specific_files,
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[self.basis_tree, self.work_tree])
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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 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 len(self.parents) != 1):
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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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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._record_ancestry()
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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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message = message_callback(self)
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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.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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rev_tree = self.builder.revision_tree()
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self.work_tree.set_parent_trees([(self.rev_id, rev_tree)])
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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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"""Store the inventory for the new revision."""
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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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inv_lines = inv_tmp.readlines()
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self.branch.weave_store.add_text(INVENTORY_FILEID, self.rev_id,
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inv_lines, self.parents)
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def _record_ancestry(self):
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"""Append merged revision ancestry to the ancestry file."""
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def _any_real_changes(self):
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"""Are there real changes between new_inventory and basis?
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For trees without rich roots, inv.root.revision changes every commit.
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But if that is the only change, we want to treat it as though there
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new_entries = self.builder.new_inventory.iter_entries()
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basis_entries = self.basis_inv.iter_entries()
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new_path, new_root_ie = new_entries.next()
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basis_path, basis_root_ie = basis_entries.next()
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# This is a copy of InventoryEntry.__eq__ only leaving out .revision
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def ie_equal_no_revision(this, other):
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return ((this.file_id == other.file_id)
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and (this.name == other.name)
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and (this.symlink_target == other.symlink_target)
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and (this.text_sha1 == other.text_sha1)
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and (this.text_size == other.text_size)
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and (this.text_id == other.text_id)
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and (this.parent_id == other.parent_id)
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and (this.kind == other.kind)
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and (this.executable == other.executable)
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if not ie_equal_no_revision(new_root_ie, basis_root_ie):
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for new_ie, basis_ie in zip(new_entries, basis_entries):
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if new_ie != basis_ie:
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# No actual changes present
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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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raise NotImplementedError("sorry, can't commit merges yet")
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w = self.branch.weave_store.get_weave_or_empty(ANCESTRY_FILEID)
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lines = w.get(w.lookup(self.parents[0]))
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lines.append(self.rev_id + '\n')
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parent_idxs = map(w.lookup, self.parents)
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w.add(self.rev_id, parent_idxs, lines)
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self.branch.weave_store.put_weave(ANCESTRY_FILEID, w)
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# work around the fact that a newly-initted tree does differ from its
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if len(self.basis_inv) == 0 and len(self.builder.new_inventory) == 1:
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raise PointlessCommit()
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# Shortcut, if the number of entries changes, then we obviously have
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if len(self.builder.new_inventory) != len(self.basis_inv):
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# If length == 1, then we only have the root entry. Which means
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# that there is no real difference (only the root could be different)
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if (len(self.builder.new_inventory) != 1 and self._any_real_changes()):
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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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pending_merges = self.branch.pending_merges()
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raise NotImplementedError("sorry, can't commit merges to the weave format yet")
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precursor_id = self.branch.last_patch()
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self.parents.append(precursor_id)
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self.parents += pending_merges
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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 = map(RevisionReference, self.parents)
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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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"""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
318
ie = self.new_inv[file_id]
319
assert ie.file_id == file_id
320
assert file_id in self.basis_inv
321
assert self.basis_inv[file_id].kind == 'file'
322
old_version = self.basis_inv[file_id].text_version
323
file_parents = [old_version]
324
else: # new in this revision
325
ie = self.work_inv[file_id].copy()
327
assert file_id not in self.basis_inv
329
assert ie.kind == 'file'
330
self._add_text_to_weave(file_id, new_lines, file_parents)
331
# make a new inventory entry for this file, using whatever
332
# it had in the working copy, plus details on the new text
333
ie.text_sha1 = _sha_strings(new_lines)
334
ie.text_size = sum(map(len, new_lines))
335
ie.text_version = self.rev_id
336
ie.entry_version = self.rev_id
339
def _add_text_to_weave(self, file_id, new_lines, parents):
340
if file_id.startswith('__'):
341
raise ValueError('illegal file-id %r for text file' % file_id)
342
self.branch.weave_store.add_text(file_id, self.rev_id, new_lines, parents)
345
def _gen_revision_id(branch, when):
346
"""Return new revision-id."""
347
s = '%s-%s-' % (user_email(branch), compact_date(when))
348
s += hexlify(rand_bytes(8))
352
def _sha_strings(strings):
353
"""Return the sha-1 of concatenation of strings"""
355
map(s.update, strings)
511
"""Remove deleted files from the working inventories.
513
This is done prior to taking the working inventory as the
514
basis for the new committed inventory.
516
This returns true if any files
517
*that existed in the basis inventory* were deleted.
518
Files that were added and deleted
519
in the working copy don't matter.
521
specific = self.specific_files
523
deleted_paths = set()
524
for path, ie in self.work_inv.iter_entries():
525
if is_inside_any(deleted_paths, path):
526
# The tree will delete the required ids recursively.
528
if specific and not is_inside_any(specific, path):
530
if not self.work_tree.has_filename(path):
531
deleted_paths.add(path)
532
self.reporter.missing(path)
533
deleted_ids.append(ie.file_id)
534
self.work_tree.unversion(deleted_ids)
536
def _populate_new_inv(self):
537
"""Build revision inventory.
539
This creates a new empty inventory. Depending on
540
which files are selected for commit, and what is present in the
541
current tree, the new inventory is populated. inventory entries
542
which are candidates for modification have their revision set to
543
None; inventory entries that are carried over untouched have their
544
revision set to their prior value.
546
# ESEPARATIONOFCONCERNS: this function is diffing and using the diff
547
# results to create a new inventory at the same time, which results
548
# in bugs like #46635. Any reason not to use/enhance Tree.changes_from?
550
mutter("Selecting files for commit with filter %s", self.specific_files)
551
assert self.work_inv.root is not None
552
entries = self.work_inv.iter_entries()
553
if not self.builder.record_root_entry:
554
symbol_versioning.warn('CommitBuilders should support recording'
555
' the root entry as of bzr 0.10.', DeprecationWarning,
557
self.builder.new_inventory.add(self.basis_inv.root.copy())
559
self._emit_progress_update()
560
for path, new_ie in entries:
561
self._emit_progress_update()
562
file_id = new_ie.file_id
563
# mutter('check %s {%s}', path, file_id)
564
if (not self.specific_files or
565
is_inside_or_parent_of_any(self.specific_files, path)):
566
# mutter('%s selected for commit', path)
570
# mutter('%s not selected for commit', path)
571
if self.basis_inv.has_id(file_id):
572
ie = self.basis_inv[file_id].copy()
574
# this entry is new and not being committed
576
self.builder.record_entry_contents(ie, self.parent_invs,
577
path, self.work_tree)
578
# describe the nature of the change that has occurred relative to
579
# the basis inventory.
580
if (self.basis_inv.has_id(ie.file_id)):
581
basis_ie = self.basis_inv[ie.file_id]
584
change = ie.describe_change(basis_ie, ie)
585
if change in (InventoryEntry.RENAMED,
586
InventoryEntry.MODIFIED_AND_RENAMED):
587
old_path = self.basis_inv.id2path(ie.file_id)
588
self.reporter.renamed(change, old_path, path)
590
self.reporter.snapshot_change(change, path)
592
if not self.specific_files:
595
# ignore removals that don't match filespec
596
for path, new_ie in self.basis_inv.iter_entries():
597
if new_ie.file_id in self.work_inv:
599
if is_inside_any(self.specific_files, path):
603
self.builder.record_entry_contents(ie, self.parent_invs, path,
606
def _emit_progress_update(self):
607
"""Emit an update to the progress bar."""
608
self.pb.update("Committing", self.pb_count, self.pb_total)
611
def _report_deletes(self):
612
for path, ie in self.basis_inv.iter_entries():
613
if ie.file_id not in self.builder.new_inventory:
614
self.reporter.deleted(path)
added
removed
bzrlib/commit.py
