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"""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
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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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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 util.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 util.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()
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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._bookmarkcurrent:
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bookmarks.unsetcurrent(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 util.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 = repo.revs("ancestors(bookmark(%s)) - "
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"ancestors(head() and not bookmark(%s)) - "
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"ancestors(bookmark() and not bookmark(%s))",
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mark, mark, 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 util.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()
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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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