comparison hgext/evolve.py @ 1685:4fd0db2f6d84

commands: introduce a new command to edit commit metadata

This patch introduces metaedit, a command to metadata of a set of revisions
without updating the working copy. This is particularly relevant for
repositories where changing the parent of the working copy is time-consuming.
We could add more stack manipulation operations to metaedit in the future.

1684:40d7b0c4abb1

        if repo['.'].rev() in revs:
            hg.update(repo, newid)
    finally:
        lockmod.release(lock, wlock)

def _foldcheck(repo, revs):
    roots = repo.revs('roots(%ld)', revs)
    if len(roots) > 1:
        raise error.Abort(_("cannot fold non-linear revisions "
                           "(multiple roots given)"))

1685:4fd0db2f6d84

        if repo['.'].rev() in revs:
            hg.update(repo, newid)
    finally:
        lockmod.release(lock, wlock)

@command('^metaedit',
         [('r', 'rev', [], _("revision to edit")),
         ] + commitopts + commitopts2,
         _('hg metaedit [OPTION]... [-r] [REV]'))
def metaedit(ui, repo, *revs, **opts):
    """edit commit information

    Edits the commit information for the specified revision. By default, edits
    commit information for the working directory parent.

    .. container:: verbose

     Some examples:

     - Edit the commit message for the working directory parent::

         hg metaedit

     - Change the username for the working directory parent::

         hg metaedit --user 'New User <[e-mail]>'

    """
    revs = list(revs)
    revs.extend(opts['rev'])
    if not revs:
        revs = ['.']

    wlock = lock = None
    try:
        wlock = repo.wlock()
        lock = repo.lock()

        revs = scmutil.revrange(repo, revs)
        if len(revs) > 1:
            # TODO: handle multiple revisions. This is somewhat tricky because
            # if we want to edit a series of commits:
            #
            #   a ---- b ---- c
            #
            # we need to rewrite a first, then directly rewrite b on top of the
            # new a, then rewrite c on top of the new b. So we need to handle
            # revisions in topological order.
            raise error.Abort(_('editing multiple revisions is not '
                                'currently supported'))

        newunstable = _disallowednewunstable(repo, revs)
        if newunstable:
            raise error.Abort(
                _('cannot edit commit information in the middle of a stack'),
                hint=_('%s will be affected') % repo[newunstable.first()])
        if repo.revs("%ld and public()", revs):
            raise error.Abort(_('cannot edit commit information for public '
                                'revisions'))
        root = head = repo[revs.first()]

        wctx = repo[None]
        p1 = wctx.p1()
        tr = repo.transaction('metaedit')
        newp1 = None
        try:
            commitopts = opts.copy()
            allctx = [repo[r] for r in revs]
            targetphase = max(c.phase() for c in allctx)

            if commitopts.get('message') or commitopts.get('logfile'):
                commitopts['edit'] = False
            else:
                msgs = [head.description()]
                commitopts['message'] =  "\n".join(msgs)
                commitopts['edit'] = True

            # TODO: if the author and message are the same, don't create a new
            # hash. Right now we create a new hash because the date can be
            # different.
            newid, created = rewrite(repo, root, allctx, head,
                                     [root.p1().node(), root.p2().node()],
                                     commitopts=commitopts)
            if created:
                if p1.rev() in revs:
                    newp1 = newid
                phases.retractboundary(repo, tr, targetphase, [newid])
                obsolete.createmarkers(repo, [(ctx, (repo[newid],))
                                              for ctx in allctx])
            else:
                ui.status(_("nothing changed\n"))
            tr.close()
        finally:
            tr.release()

        if newp1 is not None:
            hg.update(repo, newp1)
    finally:
        lockmod.release(lock, wlock)

def _foldcheck(repo, revs):
    roots = repo.revs('roots(%ld)', revs)
    if len(roots) > 1:
        raise error.Abort(_("cannot fold non-linear revisions "
                           "(multiple roots given)"))