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- Committer: Aaron Bentley
- Date: 2005-09-19 02:33:09 UTC
- mfrom: (1185.3.27)
- mto: (1185.1.29)
- mto: This revision was merged to the branch mainline in revision 1390.
- Revision ID: aaron.bentley@utoronto.ca-20050919023309-24e8871f7f8b31cf
Merged latest from mpool
- files added:
- bzrlib/meta_store.py
- files removed:
- NEWS.developers
- bzrlib/store
- bzrlib/transport
- files renamed:
- contrib/newinventory.py => bzrlib/newinventory.py
- bzrlib/store/__init__.py => bzrlib/store.py
- bzrlib/upgrade.py => tools/history2weaves.py
- bzrlib/selftest/test_weave.py => tools/testweave.py
- files modified:
- .bzrignore
added
removed
bzrlib/commit.py
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# Copyright (C) 2005 Canonical Ltd
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#
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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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#
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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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#
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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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# nothing? Perhaps the best approach is to integrate commit of
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# AtomicFiles with releasing the lock on the Branch.
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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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# look after that?
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# This code requires all merge parents to be present in the branch.
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# We could relax this but for the sake of simplicity the constraint is
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# here for now. It's not totally clear to me how we'd know which file
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# need new text versions if some parents are absent. -- mbp 20050915
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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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# distinct parent.
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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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import os
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import re
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import sys
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import time
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import pdb
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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_strings, sha_file, isdir, isfile,
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split_lines)
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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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HistoryMissing,
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)
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from bzrlib.revision import Revision
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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.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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"""
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## XXX: Remove this in favor of Branch.commit?
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Commit().commit(*args, **kwargs)
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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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pass
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def removed(self, path):
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pass
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def renamed(self, old_path, new_path):
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pass
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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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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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missing_ids
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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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working inventory.
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"""
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def __init__(self,
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reporter=None):
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if reporter is not None:
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self.reporter = reporter
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else:
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self.reporter = NullCommitReporter()
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def commit(self,
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branch, message,
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timestamp=None,
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timezone=None,
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committer=None,
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specific_files=None,
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rev_id=None,
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allow_pointless=True,
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verbose=False):
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"""Commit working copy as a new revision.
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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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"""
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mutter('preparing to commit')
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self.branch = branch
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self.weave_store = branch.weave_store
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self.rev_id = rev_id
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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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else:
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self.timestamp = long(timestamp)
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def commit(branch, message,
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timestamp=None,
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timezone=None,
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committer=None,
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verbose=True,
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specific_files=None,
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rev_id=None,
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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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specific_files
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If true, commit only those files.
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rev_id
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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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"""
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import time, tempfile, re
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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 serializer_v4
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branch.lock_write()
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try:
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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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# working inventory.
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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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if verbose:
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# note('looking for changes...')
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# print 'looking for changes...'
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# disabled; should be done at a higher level
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pass
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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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work_tree,
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work_inv,
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basis_inv,
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specific_files,
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verbose)
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if not (any_changes or allow_pointless or pending_merges):
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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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# have to test.
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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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if rev_id is None:
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self.rev_id = _gen_revision_id(self.branch, self.timestamp)
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else:
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self.rev_id = rev_id
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if committer is None:
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self.committer = username(self.branch)
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else:
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assert isinstance(committer, basestring), type(committer)
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self.committer = committer
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if timezone is None:
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self.timezone = local_time_offset()
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else:
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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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self._escape_commit_message()
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self.branch.lock_write()
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try:
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self.work_tree = self.branch.working_tree()
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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_inv = self.basis_tree.inventory
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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')
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self._check_parents_present()
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self._remove_deleted()
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self._populate_new_inv()
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self._store_snapshot()
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self._report_deletes()
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if not (self.allow_pointless
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or len(self.parents) > 1
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or self.new_inv != self.basis_inv):
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raise PointlessCommit()
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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('committed r%d {%s}', (self.branch.revno() + 1),
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self.rev_id)
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self.branch.append_revision(self.rev_id)
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self.branch.set_pending_merges([])
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finally:
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self.branch.unlock()
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def _record_inventory(self):
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"""Store the inventory for the new revision."""
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inv_text = serializer_v5.write_inventory_to_string(self.new_inv)
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self.inv_sha1 = sha_string(inv_text)
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s = self.branch.control_weaves
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s.add_text('inventory', self.rev_id,
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split_lines(inv_text), self.present_parents)
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def _escape_commit_message(self):
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"""Replace xml-incompatible control characters."""
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rev_id = _gen_revision_id(branch, time.time())
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inv_id = rev_id
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inv_tmp = tempfile.TemporaryFile()
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serializer_v4.write_inventory(new_inv, inv_tmp)
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inv_tmp.seek(0)
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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(branch)
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if timezone == None:
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timezone = local_time_offset()
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mutter("building commit log message")
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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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if isinstance(self.message, unicode):
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if isinstance(message, unicode):
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char_pattern = u'[^\x09\x0A\x0D\u0020-\uD7FF\uE000-\uFFFD]'
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else:
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# Use a regular 'str' as pattern to avoid having re.subn
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# return 'unicode' results.
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char_pattern = '[^x09\x0A\x0D\x20-\xFF]'
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self.message, escape_count = re.subn(
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message, escape_count = re.subn(
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char_pattern,
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lambda match: match.group(0).encode('unicode_escape'),
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self.message)
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message)
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if escape_count:
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note("replaced %d control characters in message", escape_count)
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def _record_ancestry(self):
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"""Append merged revision ancestry to the ancestry file.
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This should be the merged ancestry of all parents, plus the
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new revision id."""
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s = self.branch.control_weaves
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w = s.get_weave_or_empty('ancestry')
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lines = self._make_ancestry(w)
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w.add(self.rev_id, self.present_parents, lines)
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s.put_weave('ancestry', w)
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def _make_ancestry(self, ancestry_weave):
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"""Return merged ancestry lines.
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The lines are revision-ids followed by newlines."""
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parent_ancestries = [ancestry_weave.get(p) for p in self.present_parents]
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new_lines = merge_ancestry_lines(self.rev_id, parent_ancestries)
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mutter('merged ancestry of {%s}:\n%s', self.rev_id, ''.join(new_lines))
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return new_lines
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def _gather_parents(self):
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"""Record the parents of a merge for merge detection."""
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pending_merges = self.branch.pending_merges()
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self.parents = []
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self.parent_trees = []
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self.present_parents = []
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precursor_id = self.branch.last_revision()
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rev = Revision(timestamp=timestamp,
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timezone=timezone,
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committer=committer,
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message = message,
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inventory_id=inv_id,
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inventory_sha1=inv_sha1,
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revision_id=rev_id)
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rev.parents = []
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precursor_id = branch.last_patch()
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if precursor_id:
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self.parents.append(precursor_id)
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self.parents += pending_merges
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for revision in self.parents:
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if self.branch.has_revision(revision):
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self.parent_trees.append(self.branch.revision_tree(revision))
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self.present_parents.append(revision)
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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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def _check_parents_present(self):
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for parent_id in self.parents:
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mutter('commit parent revision {%s}', parent_id)
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if not self.branch.has_revision(parent_id):
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if parent_id == self.branch.last_revision():
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warning("parent is pissing %r", parent_id)
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raise HistoryMissing(self.branch, 'revision', parent_id)
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else:
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mutter("commit will ghost revision %r", parent_id)
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def _make_revision(self):
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"""Record a new revision object for this commit."""
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self.rev = Revision(timestamp=self.timestamp,
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timezone=self.timezone,
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committer=self.committer,
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message=self.message,
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inventory_sha1=self.inv_sha1,
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revision_id=self.rev_id)
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self.rev.parent_ids = self.parents
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rev_tmp = StringIO()
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serializer_v5.write_revision(self.rev, rev_tmp)
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rev_tmp = tempfile.TemporaryFile()
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serializer_v4.write_revision(rev, rev_tmp)
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rev_tmp.seek(0)
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self.branch.revision_store.add(rev_tmp, self.rev_id)
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mutter('new revision_id is {%s}', self.rev_id)
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def _remove_deleted(self):
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"""Remove deleted files from the working inventories.
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This is done prior to taking the working inventory as the
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basis for the new committed inventory.
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This returns true if any files
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*that existed in the basis inventory* were deleted.
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Files that were added and deleted
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in the working copy don't matter.
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"""
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specific = self.specific_files
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deleted_ids = []
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for path, ie in self.work_inv.iter_entries():
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if specific and not is_inside_any(specific, path):
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continue
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if not self.work_tree.has_filename(path):
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note('missing %s', path)
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deleted_ids.append(ie.file_id)
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if deleted_ids:
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for file_id in deleted_ids:
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if file_id in self.work_inv:
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del self.work_inv[file_id]
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self.branch._write_inventory(self.work_inv)
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def _find_entry_parents(self, file_id):
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"""Return the text versions and hashes for all file parents.
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Returned as a map from text version to inventory entry.
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This is a set containing the file versions in all parents
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revisions containing the file. If the file is new, the set
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will be empty."""
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r = {}
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for tree in self.parent_trees:
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if file_id in tree.inventory:
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ie = tree.inventory[file_id]
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assert ie.file_id == file_id
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if ie.revision in r:
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assert r[ie.revision] == ie
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else:
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r[ie.revision] = ie
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return r
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def _store_snapshot(self):
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"""Pass over inventory and record a snapshot.
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Entries get a new revision when they are modified in
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any way, which includes a merge with a new set of
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parents that have the same entry. Currently we do not
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check for that set being ancestors of each other - and
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we should - only parallel children should count for this
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test see find_entry_parents to correct this. FIXME <---
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I.e. if we are merging in revision FOO, and our
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copy of file id BAR is identical to FOO.BAR, we should
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generate a new revision of BAR IF and only IF FOO is
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neither a child of our current tip, nor an ancestor of
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our tip. The presence of FOO in our store should not
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affect this logic UNLESS we are doing a merge of FOO,
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or a child of FOO.
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"""
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# XXX: Need to think more here about when the user has
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# made a specific decision on a particular value -- c.f.
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# mark-merge.
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for path, ie in self.new_inv.iter_entries():
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previous_entries = self._find_entry_parents(ie. file_id)
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if ie.revision is None:
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change = ie.snapshot(self.rev_id, path, previous_entries,
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self.work_tree, self.weave_store)
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else:
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change = "unchanged"
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note("%s %s", change, path)
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def _populate_new_inv(self):
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"""Build revision inventory.
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This creates a new empty inventory. Depending on
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which files are selected for commit, and what is present in the
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current tree, the new inventory is populated. inventory entries
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which are candidates for modification have their revision set to
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None; inventory entries that are carried over untouched have their
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revision set to their prior value.
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"""
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mutter("Selecting files for commit with filter %s", self.specific_files)
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self.new_inv = Inventory()
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for path, new_ie in self.work_inv.iter_entries():
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file_id = new_ie.file_id
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mutter('check %s {%s}', path, new_ie.file_id)
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if self.specific_files:
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if not is_inside_any(self.specific_files, path):
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mutter('%s not selected for commit', path)
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self._carry_file(file_id)
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continue
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mutter('%s selected for commit', path)
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ie = new_ie.copy()
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ie.revision = None
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self.new_inv.add(ie)
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def _carry_file(self, file_id):
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"""Carry the file unchanged from the basis revision."""
425
if self.basis_inv.has_id(file_id):
426
self.new_inv.add(self.basis_inv[file_id].copy())
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def _report_deletes(self):
429
for file_id in self.basis_inv:
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if file_id not in self.new_inv:
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note('deleted %s', self.basis_inv.id2path(file_id))
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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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## matter.
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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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if verbose:
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# disabled; should go through logging
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# note("commited r%d" % branch.revno())
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# print ("commited r%d" % branch.revno())
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pass
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finally:
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branch.unlock()
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def _gen_revision_id(branch, when):
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"""Return new revision-id."""
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from binascii import hexlify
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from bzrlib.osutils import rand_bytes, compact_date, user_email
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437
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s = '%s-%s-' % (user_email(branch), compact_date(when))
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s += hexlify(rand_bytes(8))
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return s
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def merge_ancestry_lines(rev_id, ancestries):
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"""Return merged ancestry lines.
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rev_id -- id of the new revision
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ancestries -- a sequence of ancestries for parent revisions,
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as newline-terminated line lists.
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def _gather_commit(branch, work_tree, work_inv, basis_inv, specific_files,
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verbose):
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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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missing_ids
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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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working inventory.
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"""
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if len(ancestries) == 0:
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return [rev_id + '\n']
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seen = set(ancestries[0])
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ancs = ancestries[0][:]
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for parent_ancestry in ancestries[1:]:
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for line in parent_ancestry:
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assert line[-1] == '\n'
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if line not in seen:
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ancs.append(line)
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seen.add(line)
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r = rev_id + '\n'
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assert r not in seen
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ancs.append(r)
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return ancs
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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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any_changes = False
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inv = Inventory(work_inv.root.file_id)
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missing_ids = []
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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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else:
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# omit this from committed inventory
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pass
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continue
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if not work_tree.has_id(file_id):
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if verbose:
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print('deleted %s%s' % (path, kind_marker(entry.kind)))
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any_changes = True
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mutter(" file is missing, removing from inventory")
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missing_ids.append(file_id)
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continue
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# this is present in the new inventory; may be new, modified or
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# unchanged.
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old_ie = basis_inv.has_id(file_id) and basis_inv[file_id]
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entry = entry.copy()
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inv.add(entry)
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if old_ie:
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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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if not isdir(p):
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raise BzrError("%s is entered as directory but not a directory"
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% quotefn(p))
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elif entry.kind == 'file':
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if not isfile(p):
291
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)
294
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if (old_ie
296
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
299
entry.text_sha1 = new_sha1
300
entry.text_size = old_ie.text_size
301
mutter(' unchanged from previous text_id {%s}' %
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entry.text_id)
303
else:
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content = file(p, 'rb').read()
305
306
# calculate the sha again, just in case the file contents
307
# changed since we updated the cache
308
entry.text_sha1 = sha_string(content)
309
entry.text_size = len(content)
310
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entry.text_id = gen_file_id(entry.name)
312
branch.text_store.add(content, entry.text_id)
313
mutter(' stored with text_id {%s}' % entry.text_id)
314
315
if verbose:
316
marked = path + kind_marker(entry.kind)
317
if not old_ie:
318
print 'added', marked
319
any_changes = True
320
elif old_ie == entry:
321
pass # unchanged
322
elif (old_ie.name == entry.name
323
and old_ie.parent_id == entry.parent_id):
324
print 'modified', marked
325
any_changes = True
326
else:
327
print 'renamed', marked
328
any_changes = True
329
elif old_ie != entry:
330
any_changes = True
331
332
return missing_ids, inv, any_changes
333
334
Loggerhead is a web-based interface for Breezy
Version: 2.0.1