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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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# FIXME: "bzr commit doc/format" commits doc/format.txt!
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def commit(branch, message,
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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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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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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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# 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 cStringIO import StringIO
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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, 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 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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# 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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"""Task of committing a new revision.
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This is a MethodObject: it accumulates state as the commit is
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prepared, and then it is discarded. It doesn't represent
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historical revisions, just the act of recording a new one.
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Modified to hold a list of files that have been deleted from
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the working directory; these should be removed from the
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from bzrlib.osutils import local_time_offset, username
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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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from bzrlib.xml import pack_xml
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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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work_tree = branch.working_tree()
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work_inv = work_tree.inventory
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basis = branch.basis_tree()
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basis_inv = basis.inventory
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note('looking for changes...')
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pending_merges = branch.pending_merges()
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missing_ids, new_inv, any_changes = \
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_gather_commit(branch,
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if not (any_changes or allow_pointless or pending_merges):
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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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allow_pointless=True,
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"""Commit working copy as a new revision.
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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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specific_files -- If true, commit only those files.
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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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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 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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# 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.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 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._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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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 _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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# 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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for file_id in missing_ids:
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# Any files that have been deleted are now removed from the
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# working inventory. Files that were not selected for commit
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# are left as they were in the working inventory and ommitted
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# from the revision inventory.
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# have to do this later so we don't mess up the iterator.
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# since parents may be removed before their children we
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# FIXME: There's probably a better way to do this; perhaps
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# the workingtree should know how to filter itbranch.
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if work_inv.has_id(file_id):
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del work_inv[file_id]
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rev_id = _gen_revision_id(time.time())
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inv_tmp = tempfile.TemporaryFile()
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pack_xml(new_inv, inv_tmp)
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branch.inventory_store.add(inv_tmp, inv_id)
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mutter('new inventory_id is {%s}' % inv_id)
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# We could also just sha hash the inv_tmp file
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# however, in the case that branch.inventory_store.add()
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# ever actually does anything special
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inv_sha1 = branch.get_inventory_sha1(inv_id)
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branch._write_inventory(work_inv)
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if timestamp == None:
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timestamp = time.time()
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if committer == None:
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committer = username()
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timezone = local_time_offset()
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mutter("building commit log message")
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rev = Revision(timestamp=timestamp,
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inventory_sha1=inv_sha1,
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precursor_id = branch.last_patch()
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precursor_sha1 = branch.get_revision_sha1(precursor_id)
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rev.parents.append(RevisionReference(precursor_id, precursor_sha1))
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for merge_rev in pending_merges:
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rev.parents.append(RevisionReference(merge_rev))
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rev_tmp = tempfile.TemporaryFile()
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pack_xml(rev, rev_tmp)
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branch.revision_store.add(rev_tmp, rev_id)
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mutter("new revision_id is {%s}" % rev_id)
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## XXX: Everything up to here can simply be orphaned if we abort
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## the commit; it will leave junk files behind but that doesn't
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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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## TODO: Also calculate and store the inventory SHA1
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mutter("committing patch r%d" % (branch.revno() + 1))
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branch.append_revision(rev_id)
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branch.set_pending_merges([])
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note("commited r%d" % branch.revno())
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def _gen_revision_id(when):
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"""Return new revision-id."""
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from binascii import hexlify
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from osutils import rand_bytes, compact_date, user_email
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s = '%s-%s-' % (user_email(), compact_date(when))
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s += hexlify(rand_bytes(8))
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def _gather_commit(branch, work_tree, work_inv, basis_inv, specific_files,
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"""Build inventory preparatory to commit.
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Returns missing_ids, new_inv, any_changes.
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This adds any changed files into the text store, and sets their
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test-id, sha and size in the returned inventory appropriately.
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Modified to hold a list of files that have been deleted from
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the working directory; these should be removed from the
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from bzrlib.inventory import Inventory
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from bzrlib.osutils import isdir, isfile, sha_string, quotefn, \
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local_time_offset, username, kind_marker, is_inside_any
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from bzrlib.branch import gen_file_id
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from bzrlib.errors import BzrError
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from bzrlib.revision import Revision
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from bzrlib.trace import mutter, note
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inv = Inventory(work_inv.root.file_id)
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for path, entry in work_inv.iter_entries():
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## TODO: Check that the file kind has not changed from the previous
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## revision of this file (if any).
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p = branch.abspath(path)
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file_id = entry.file_id
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mutter('commit prep file %s, id %r ' % (p, file_id))
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if specific_files and not is_inside_any(specific_files, path):
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mutter(' skipping file excluded from commit')
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if basis_inv.has_id(file_id):
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# carry over with previous state
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inv.add(basis_inv[file_id].copy())
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# omit this from committed inventory
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if not work_tree.has_id(file_id):
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print('deleted %s%s' % (path, kind_marker(entry.kind)))
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mutter(" file is missing, removing from inventory")
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missing_ids.append(file_id)
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# this is present in the new inventory; may be new, modified or
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old_ie = basis_inv.has_id(file_id) and basis_inv[file_id]
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old_kind = old_ie.kind
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if old_kind != entry.kind:
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raise BzrError("entry %r changed kind from %r to %r"
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% (file_id, old_kind, entry.kind))
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if entry.kind == 'directory':
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raise BzrError("%s is entered as directory but not a directory"
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elif entry.kind == 'file':
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raise BzrError("%s is entered as file but is not a file" % quotefn(p))
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new_sha1 = work_tree.get_file_sha1(file_id)
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and old_ie.text_sha1 == new_sha1):
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## assert content == basis.get_file(file_id).read()
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entry.text_id = old_ie.text_id
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entry.text_sha1 = new_sha1
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entry.text_size = old_ie.text_size
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mutter(' unchanged from previous text_id {%s}' %
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content = file(p, 'rb').read()
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# calculate the sha again, just in case the file contents
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# changed since we updated the cache
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entry.text_sha1 = sha_string(content)
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entry.text_size = len(content)
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entry.text_id = gen_file_id(entry.name)
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branch.text_store.add(content, entry.text_id)
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mutter(' stored with text_id {%s}' % entry.text_id)
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marked = path + kind_marker(entry.kind)
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print 'added', marked
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elif old_ie == entry:
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elif (old_ie.name == entry.name
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and old_ie.parent_id == entry.parent_id):
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print 'modified', marked
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print 'renamed', marked
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return missing_ids, inv, any_changes
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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:
484
if self.master_locked:
485
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
492
# precisely. See repository_implementations/test_repository.py
494
# Python strings can include characters that can't be
495
# represented in well-formed XML; escape characters that
496
# aren't listed in the XML specification
497
# (http://www.w3.org/TR/REC-xml/#NT-Char).
498
self.message, escape_count = re.subn(
499
u'[^\x09\x0A\x0D\u0020-\uD7FF\uE000-\uFFFD]+',
500
lambda match: match.group(0).encode('unicode_escape'),
503
self.reporter.escaped(escape_count, self.message)
505
def _gather_parents(self):
506
"""Record the parents of a merge for merge detection."""
507
# TODO: Make sure that this list doesn't contain duplicate
508
# entries and the order is preserved when doing this.
509
self.parents = self.work_tree.get_parent_ids()
510
self.parent_invs = []
511
for revision in self.parents:
512
if self.branch.repository.has_revision(revision):
513
mutter('commit parent revision {%s}', revision)
514
inventory = self.branch.repository.get_inventory(revision)
515
self.parent_invs.append(inventory)
517
mutter('commit parent ghost revision {%s}', revision)
519
def _remove_deleted(self):
520
"""Remove deleted files from the working inventories.
522
This is done prior to taking the working inventory as the
523
basis for the new committed inventory.
525
This returns true if any files
526
*that existed in the basis inventory* were deleted.
527
Files that were added and deleted
528
in the working copy don't matter.
530
specific = self.specific_files
532
deleted_paths = set()
533
for path, ie in self.work_inv.iter_entries():
534
if is_inside_any(deleted_paths, path):
535
# The tree will delete the required ids recursively.
537
if specific and not is_inside_any(specific, path):
539
if not self.work_tree.has_filename(path):
540
deleted_paths.add(path)
541
self.reporter.missing(path)
542
deleted_ids.append(ie.file_id)
543
self.work_tree.unversion(deleted_ids)
545
def _populate_new_inv(self):
546
"""Build revision inventory.
548
This creates a new empty inventory. Depending on
549
which files are selected for commit, and what is present in the
550
current tree, the new inventory is populated. inventory entries
551
which are candidates for modification have their revision set to
552
None; inventory entries that are carried over untouched have their
553
revision set to their prior value.
555
# ESEPARATIONOFCONCERNS: this function is diffing and using the diff
556
# results to create a new inventory at the same time, which results
557
# in bugs like #46635. Any reason not to use/enhance Tree.changes_from?
559
mutter("Selecting files for commit with filter %s", self.specific_files)
560
assert self.work_inv.root is not None
561
entries = self.work_inv.iter_entries()
562
if not self.builder.record_root_entry:
563
symbol_versioning.warn('CommitBuilders should support recording'
564
' the root entry as of bzr 0.10.', DeprecationWarning,
566
self.builder.new_inventory.add(self.basis_inv.root.copy())
568
self._emit_progress_update()
569
for path, new_ie in entries:
570
self._emit_progress_update()
571
file_id = new_ie.file_id
572
# mutter('check %s {%s}', path, file_id)
573
if (not self.specific_files or
574
is_inside_or_parent_of_any(self.specific_files, path)):
575
# mutter('%s selected for commit', path)
579
# mutter('%s not selected for commit', path)
580
if self.basis_inv.has_id(file_id):
581
ie = self.basis_inv[file_id].copy()
583
# this entry is new and not being committed
585
self.builder.record_entry_contents(ie, self.parent_invs,
586
path, self.work_tree)
587
# describe the nature of the change that has occurred relative to
588
# the basis inventory.
589
if (self.basis_inv.has_id(ie.file_id)):
590
basis_ie = self.basis_inv[ie.file_id]
593
change = ie.describe_change(basis_ie, ie)
594
if change in (InventoryEntry.RENAMED,
595
InventoryEntry.MODIFIED_AND_RENAMED):
596
old_path = self.basis_inv.id2path(ie.file_id)
597
self.reporter.renamed(change, old_path, path)
599
self.reporter.snapshot_change(change, path)
601
if not self.specific_files:
604
# ignore removals that don't match filespec
605
for path, new_ie in self.basis_inv.iter_entries():
606
if new_ie.file_id in self.work_inv:
608
if is_inside_any(self.specific_files, path):
612
self.builder.record_entry_contents(ie, self.parent_invs, path,
615
def _emit_progress_update(self):
616
"""Emit an update to the progress bar."""
617
self.pb.update("Committing", self.pb_count, self.pb_total)
620
def _report_deletes(self):
621
for path, ie in self.basis_inv.iter_entries():
622
if ie.file_id not in self.builder.new_inventory:
623
self.reporter.deleted(path)
added
removed
bzrlib/commit.py
