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- Committer: Martin Pool
- Date: 2005-10-13 07:30:57 UTC
- mto: (1185.41.1 bzr.sftp) (1464.1.1) (1534.1.1 integration) (1495.1.4) (1505.1.16 bzr-bound-branch) (1508.1.15) (1526.1.3 run_tests_twice_for_i18n) (1540.1.3 bzr.dev (Main development branch)) (1685.1.1 bzr-encoding) (1553.5.1 bzr.dev (Main development branch)) (1608.2.1 bzr.mbp.escape-stores)
- mto: This revision was merged to the branch mainline in revision 1455.
- Revision ID: mbp@sourcefrog.net-20051013073057-05ad152a07fc4278
- stub for revision properties
- files added:
- NEWS.developers
- bzrlib/store
- bzrlib/transport
- files removed:
- bzrlib/meta_store.py
- files renamed:
- tools/testweave.py => bzrlib/selftest/test_weave.py
- bzrlib/store.py => bzrlib/store/__init__.py
- tools/history2weaves.py => bzrlib/upgrade.py
- bzrlib/newinventory.py => contrib/newinventory.py
- files modified:
- .bzrignore
- bzr *
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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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
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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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# 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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# 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,
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rand_bytes, compact_date,
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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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import bzrlib.config
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from bzrlib.errors import (BzrError, PointlessCommit,
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HistoryMissing,
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ConflictsInTree
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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, ROOT_ID
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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 snapshot_change(self, change, path):
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pass
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def completed(self, revno, rev_id):
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pass
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def deleted(self, file_id):
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pass
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def escaped(self, escape_count, message):
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pass
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def missing(self, path):
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pass
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class ReportCommitToLog(NullCommitReporter):
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def snapshot_change(self, change, 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 r%d {%s}', revno, rev_id)
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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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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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revprops=None):
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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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revprops -- Properties for new revision
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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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self.revprops = revprops
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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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if rev_id is None:
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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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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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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 = bzrlib.config.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):
237
raise PointlessCommit()
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if len(list(self.work_tree.iter_conflicts()))>0:
240
raise ConflictsInTree
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self._record_inventory()
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self._make_revision()
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self.reporter.completed(self.branch.revno()+1, 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:
248
self.branch.unlock()
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def _record_inventory(self):
251
"""Store the inventory for the new revision."""
252
inv_text = serializer_v5.write_inventory_to_string(self.new_inv)
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self.inv_sha1 = sha_string(inv_text)
254
s = self.branch.control_weaves
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s.add_text('inventory', self.rev_id,
256
split_lines(inv_text), self.present_parents,
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self.branch.get_transaction())
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def _escape_commit_message(self):
260
"""Replace xml-incompatible control characters."""
261
# Python strings can include characters that can't be
262
# represented in well-formed XML; escape characters that
263
# aren't listed in the XML specification
264
# (http://www.w3.org/TR/REC-xml/#NT-Char).
265
if isinstance(self.message, unicode):
266
char_pattern = u'[^\x09\x0A\x0D\u0020-\uD7FF\uE000-\uFFFD]'
267
else:
268
# Use a regular 'str' as pattern to avoid having re.subn
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# return 'unicode' results.
270
char_pattern = '[^x09\x0A\x0D\x20-\xFF]'
271
self.message, escape_count = re.subn(
272
char_pattern,
273
lambda match: match.group(0).encode('unicode_escape'),
274
self.message)
275
if escape_count:
276
self.reporter.escaped(escape_count, self.message)
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def _gather_parents(self):
279
"""Record the parents of a merge for merge detection."""
280
pending_merges = self.branch.pending_merges()
281
self.parents = []
282
self.parent_invs = []
283
self.present_parents = []
284
precursor_id = self.branch.last_revision()
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285
if precursor_id:
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precursor_sha1 = branch.get_revision_sha1(precursor_id)
159
rev.parents.append(RevisionReference(precursor_id, precursor_sha1))
160
for merge_rev in pending_merges:
161
rev.parents.append(RevisionReference(merge_rev))
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self.parents.append(precursor_id)
287
self.parents += pending_merges
288
for revision in self.parents:
289
if self.branch.has_revision(revision):
290
self.parent_invs.append(self.branch.get_inventory(revision))
291
self.present_parents.append(revision)
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292
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rev_tmp = tempfile.TemporaryFile()
164
serializer_v4.write_revision(rev, rev_tmp)
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def _check_parents_present(self):
294
for parent_id in self.parents:
295
mutter('commit parent revision {%s}', parent_id)
296
if not self.branch.has_revision(parent_id):
297
if parent_id == self.branch.last_revision():
298
warning("parent is missing %r", parent_id)
299
raise HistoryMissing(self.branch, 'revision', parent_id)
300
else:
301
mutter("commit will ghost revision %r", parent_id)
302
303
def _make_revision(self):
304
"""Record a new revision object for this commit."""
305
self.rev = Revision(timestamp=self.timestamp,
306
timezone=self.timezone,
307
committer=self.committer,
308
message=self.message,
309
inventory_sha1=self.inv_sha1,
310
revision_id=self.rev_id,
311
properties=self.revprops)
312
self.rev.parent_ids = self.parents
313
rev_tmp = StringIO()
314
serializer_v5.write_revision(self.rev, rev_tmp)
165
315
rev_tmp.seek(0)
166
branch.revision_store.add(rev_tmp, rev_id)
167
mutter("new revision_id is {%s}" % rev_id)
168
169
## XXX: Everything up to here can simply be orphaned if we abort
170
## the commit; it will leave junk files behind but that doesn't
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## matter.
172
173
## TODO: Read back the just-generated changeset, and make sure it
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## applies and recreates the right state.
175
176
## TODO: Also calculate and store the inventory SHA1
177
mutter("committing patch r%d" % (branch.revno() + 1))
178
179
branch.append_revision(rev_id)
180
181
branch.set_pending_merges([])
182
183
if verbose:
184
# disabled; should go through logging
185
# note("commited r%d" % branch.revno())
186
# print ("commited r%d" % branch.revno())
187
pass
188
finally:
189
branch.unlock()
190
191
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self.branch.revision_store.add(rev_tmp, self.rev_id)
317
mutter('new revision_id is {%s}', self.rev_id)
318
319
def _remove_deleted(self):
320
"""Remove deleted files from the working inventories.
321
322
This is done prior to taking the working inventory as the
323
basis for the new committed inventory.
324
325
This returns true if any files
326
*that existed in the basis inventory* were deleted.
327
Files that were added and deleted
328
in the working copy don't matter.
329
"""
330
specific = self.specific_files
331
deleted_ids = []
332
for path, ie in self.work_inv.iter_entries():
333
if specific and not is_inside_any(specific, path):
334
continue
335
if not self.work_tree.has_filename(path):
336
self.reporter.missing(path)
337
deleted_ids.append((path, ie.file_id))
338
if deleted_ids:
339
deleted_ids.sort(reverse=True)
340
for path, file_id in deleted_ids:
341
del self.work_inv[file_id]
342
self.branch._write_inventory(self.work_inv)
343
344
def _store_snapshot(self):
345
"""Pass over inventory and record a snapshot.
346
347
Entries get a new revision when they are modified in
348
any way, which includes a merge with a new set of
349
parents that have the same entry.
350
"""
351
# XXX: Need to think more here about when the user has
352
# made a specific decision on a particular value -- c.f.
353
# mark-merge.
354
for path, ie in self.new_inv.iter_entries():
355
previous_entries = ie.find_previous_heads(
356
self.parent_invs,
357
self.weave_store.get_weave_or_empty(ie.file_id,
358
self.branch.get_transaction()))
359
if ie.revision is None:
360
change = ie.snapshot(self.rev_id, path, previous_entries,
361
self.work_tree, self.weave_store,
362
self.branch.get_transaction())
363
else:
364
change = "unchanged"
365
self.reporter.snapshot_change(change, path)
366
367
def _populate_new_inv(self):
368
"""Build revision inventory.
369
370
This creates a new empty inventory. Depending on
371
which files are selected for commit, and what is present in the
372
current tree, the new inventory is populated. inventory entries
373
which are candidates for modification have their revision set to
374
None; inventory entries that are carried over untouched have their
375
revision set to their prior value.
376
"""
377
mutter("Selecting files for commit with filter %s", self.specific_files)
378
self.new_inv = Inventory()
379
for path, new_ie in self.work_inv.iter_entries():
380
file_id = new_ie.file_id
381
mutter('check %s {%s}', path, new_ie.file_id)
382
if self.specific_files:
383
if not is_inside_any(self.specific_files, path):
384
mutter('%s not selected for commit', path)
385
self._carry_entry(file_id)
386
continue
387
else:
388
# this is selected, ensure its parents are too.
389
parent_id = new_ie.parent_id
390
while parent_id != ROOT_ID:
391
if not self.new_inv.has_id(parent_id):
392
ie = self._select_entry(self.work_inv[parent_id])
393
mutter('%s selected for commit because of %s',
394
self.new_inv.id2path(parent_id), path)
395
396
ie = self.new_inv[parent_id]
397
if ie.revision is not None:
398
ie.revision = None
399
mutter('%s selected for commit because of %s',
400
self.new_inv.id2path(parent_id), path)
401
parent_id = ie.parent_id
402
mutter('%s selected for commit', path)
403
self._select_entry(new_ie)
404
405
def _select_entry(self, new_ie):
406
"""Make new_ie be considered for committing."""
407
ie = new_ie.copy()
408
ie.revision = None
409
self.new_inv.add(ie)
410
return ie
411
412
def _carry_entry(self, file_id):
413
"""Carry the file unchanged from the basis revision."""
414
if self.basis_inv.has_id(file_id):
415
self.new_inv.add(self.basis_inv[file_id].copy())
416
417
def _report_deletes(self):
418
for file_id in self.basis_inv:
419
if file_id not in self.new_inv:
420
self.reporter.deleted(self.basis_inv.id2path(file_id))
192
421
193
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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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s = '%s-%s-' % (user_email(branch), compact_date(when))
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s = '%s-%s-' % (bzrlib.config.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 _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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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):
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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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if (old_ie
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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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entry.text_id)
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else:
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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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if verbose:
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marked = path + kind_marker(entry.kind)
301
if not old_ie:
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print 'added', marked
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any_changes = True
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elif old_ie == entry:
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pass # unchanged
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elif (old_ie.name == entry.name
307
and old_ie.parent_id == entry.parent_id):
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print 'modified', marked
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any_changes = True
310
else:
311
print 'renamed', marked
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any_changes = True
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return missing_ids, inv, any_changes
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Loggerhead is a web-based interface for Breezy
Version: 2.0.1