mirror of
https://github.com/facebook/sapling.git
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106983607a
Now, 'dirstate.write(tr)' delays writing in-memory changes out, if a transaction is running. This may cause treating this revision as "the first bad one" at bisecting in some cases using external hook process inside transaction scope, because some external hooks and editor process are still invoked without HG_PENDING and pending changes aren't visible to them. 'dirstate.write()' callers below in localrepo.py explicitly use 'None' as 'tr', because they can assume that no transaction is running: - just before starting transaction - at closing transaction, or - at unlocking wlock
223 lines
8.3 KiB
Python
223 lines
8.3 KiB
Python
"""strip changesets and their descendants from history
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This extension allows you to strip changesets and all their descendants from the
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repository. See the command help for details.
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"""
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from mercurial.i18n import _
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from mercurial.node import nullid
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from mercurial.lock import release
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from mercurial import cmdutil, hg, scmutil, util, error
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from mercurial import repair, bookmarks, merge
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cmdtable = {}
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command = cmdutil.command(cmdtable)
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# Note for extension authors: ONLY specify testedwith = 'internal' for
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# extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
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# be specifying the version(s) of Mercurial they are tested with, or
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# leave the attribute unspecified.
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testedwith = 'internal'
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def checksubstate(repo, baserev=None):
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'''return list of subrepos at a different revision than substate.
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Abort if any subrepos have uncommitted changes.'''
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inclsubs = []
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wctx = repo[None]
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if baserev:
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bctx = repo[baserev]
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else:
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bctx = wctx.parents()[0]
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for s in sorted(wctx.substate):
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wctx.sub(s).bailifchanged(True)
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if s not in bctx.substate or bctx.sub(s).dirty():
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inclsubs.append(s)
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return inclsubs
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def checklocalchanges(repo, force=False, excsuffix=''):
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cmdutil.checkunfinished(repo)
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s = repo.status()
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if not force:
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if s.modified or s.added or s.removed or s.deleted:
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_("local changes found") # i18n tool detection
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raise error.Abort(_("local changes found" + excsuffix))
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if checksubstate(repo):
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_("local changed subrepos found") # i18n tool detection
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raise error.Abort(_("local changed subrepos found" + excsuffix))
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return s
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def strip(ui, repo, revs, update=True, backup=True, force=None, bookmark=None):
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wlock = lock = None
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try:
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wlock = repo.wlock()
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lock = repo.lock()
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if update:
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checklocalchanges(repo, force=force)
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urev, p2 = repo.changelog.parents(revs[0])
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if (util.safehasattr(repo, 'mq') and
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p2 != nullid
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and p2 in [x.node for x in repo.mq.applied]):
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urev = p2
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hg.clean(repo, urev)
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repo.dirstate.write(repo.currenttransaction())
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repair.strip(ui, repo, revs, backup)
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marks = repo._bookmarks
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if bookmark:
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if bookmark == repo._activebookmark:
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bookmarks.deactivate(repo)
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del marks[bookmark]
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marks.write()
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ui.write(_("bookmark '%s' deleted\n") % bookmark)
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finally:
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release(lock, wlock)
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@command("strip",
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[
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('r', 'rev', [], _('strip specified revision (optional, '
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'can specify revisions without this '
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'option)'), _('REV')),
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('f', 'force', None, _('force removal of changesets, discard '
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'uncommitted changes (no backup)')),
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('', 'no-backup', None, _('no backups')),
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('', 'nobackup', None, _('no backups (DEPRECATED)')),
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('n', '', None, _('ignored (DEPRECATED)')),
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('k', 'keep', None, _("do not modify working directory during "
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"strip")),
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('B', 'bookmark', '', _("remove revs only reachable from given"
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" bookmark"))],
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_('hg strip [-k] [-f] [-n] [-B bookmark] [-r] REV...'))
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def stripcmd(ui, repo, *revs, **opts):
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"""strip changesets and all their descendants from the repository
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The strip command removes the specified changesets and all their
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descendants. If the working directory has uncommitted changes, the
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operation is aborted unless the --force flag is supplied, in which
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case changes will be discarded.
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If a parent of the working directory is stripped, then the working
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directory will automatically be updated to the most recent
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available ancestor of the stripped parent after the operation
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completes.
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Any stripped changesets are stored in ``.hg/strip-backup`` as a
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bundle (see :hg:`help bundle` and :hg:`help unbundle`). They can
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be restored by running :hg:`unbundle .hg/strip-backup/BUNDLE`,
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where BUNDLE is the bundle file created by the strip. Note that
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the local revision numbers will in general be different after the
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restore.
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Use the --no-backup option to discard the backup bundle once the
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operation completes.
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Strip is not a history-rewriting operation and can be used on
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changesets in the public phase. But if the stripped changesets have
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been pushed to a remote repository you will likely pull them again.
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Return 0 on success.
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"""
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backup = True
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if opts.get('no_backup') or opts.get('nobackup'):
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backup = False
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cl = repo.changelog
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revs = list(revs) + opts.get('rev')
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revs = set(scmutil.revrange(repo, revs))
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wlock = repo.wlock()
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try:
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if opts.get('bookmark'):
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mark = opts.get('bookmark')
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marks = repo._bookmarks
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if mark not in marks:
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raise error.Abort(_("bookmark '%s' not found") % mark)
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# If the requested bookmark is not the only one pointing to a
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# a revision we have to only delete the bookmark and not strip
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# anything. revsets cannot detect that case.
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uniquebm = True
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for m, n in marks.iteritems():
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if m != mark and n == repo[mark].node():
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uniquebm = False
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break
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if uniquebm:
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rsrevs = repair.stripbmrevset(repo, mark)
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revs.update(set(rsrevs))
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if not revs:
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del marks[mark]
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marks.write()
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ui.write(_("bookmark '%s' deleted\n") % mark)
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if not revs:
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raise error.Abort(_('empty revision set'))
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descendants = set(cl.descendants(revs))
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strippedrevs = revs.union(descendants)
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roots = revs.difference(descendants)
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update = False
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# if one of the wdir parent is stripped we'll need
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# to update away to an earlier revision
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for p in repo.dirstate.parents():
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if p != nullid and cl.rev(p) in strippedrevs:
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update = True
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break
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rootnodes = set(cl.node(r) for r in roots)
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q = getattr(repo, 'mq', None)
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if q is not None and q.applied:
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# refresh queue state if we're about to strip
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# applied patches
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if cl.rev(repo.lookup('qtip')) in strippedrevs:
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q.applieddirty = True
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start = 0
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end = len(q.applied)
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for i, statusentry in enumerate(q.applied):
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if statusentry.node in rootnodes:
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# if one of the stripped roots is an applied
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# patch, only part of the queue is stripped
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start = i
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break
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del q.applied[start:end]
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q.savedirty()
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revs = sorted(rootnodes)
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if update and opts.get('keep'):
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urev, p2 = repo.changelog.parents(revs[0])
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if (util.safehasattr(repo, 'mq') and p2 != nullid
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and p2 in [x.node for x in repo.mq.applied]):
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urev = p2
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uctx = repo[urev]
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# only reset the dirstate for files that would actually change
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# between the working context and uctx
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descendantrevs = repo.revs("%s::." % uctx.rev())
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changedfiles = []
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for rev in descendantrevs:
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# blindly reset the files, regardless of what actually changed
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changedfiles.extend(repo[rev].files())
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# reset files that only changed in the dirstate too
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dirstate = repo.dirstate
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dirchanges = [f for f in dirstate if dirstate[f] != 'n']
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changedfiles.extend(dirchanges)
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repo.dirstate.rebuild(urev, uctx.manifest(), changedfiles)
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repo.dirstate.write(repo.currenttransaction())
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# clear resolve state
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ms = merge.mergestate(repo)
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ms.reset(repo['.'].node())
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update = False
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strip(ui, repo, revs, backup=backup, update=update,
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force=opts.get('force'), bookmark=opts.get('bookmark'))
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finally:
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wlock.release()
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return 0
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