view hgext/narrow/narrowwirepeer.py @ 38618:c829749e7639

shelve: directly handle the initial parent alignment

Shelve is currently sub-contracting some of its work to the rebase extension.
In order to make shelve more independent and flexible we would like shelve to
handle the parent alignment directly.

After this change, we no longer need to use rebase in shelve.

Differential Revision: https://phab.mercurial-scm.org/D3693

# narrowwirepeer.py - passes narrow spec with unbundle command
#
# Copyright 2017 Google, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from __future__ import absolute_import

from mercurial.i18n import _
from mercurial import (
    error,
    extensions,
    hg,
    narrowspec,
    node,
)

def uisetup():
    def peersetup(ui, peer):
        # We must set up the expansion before reposetup below, since it's used
        # at clone time before we have a repo.
        class expandingpeer(peer.__class__):
            def expandnarrow(self, narrow_include, narrow_exclude, nodes):
                ui.status(_("expanding narrowspec\n"))
                if not self.capable('exp-expandnarrow'):
                    raise error.Abort(
                        'peer does not support expanding narrowspecs')

                hex_nodes = (node.hex(n) for n in nodes)
                new_narrowspec = self._call(
                    'expandnarrow',
                    includepats=','.join(narrow_include),
                    excludepats=','.join(narrow_exclude),
                    nodes=','.join(hex_nodes))

                return narrowspec.parseserverpatterns(new_narrowspec)
        peer.__class__ = expandingpeer
    hg.wirepeersetupfuncs.append(peersetup)

def reposetup(repo):
    def wirereposetup(ui, peer):
        def wrapped(orig, cmd, *args, **kwargs):
            if cmd == 'unbundle':
                # TODO: don't blindly add include/exclude wireproto
                # arguments to unbundle.
                include, exclude = repo.narrowpats
                kwargs[r"includepats"] = ','.join(include)
                kwargs[r"excludepats"] = ','.join(exclude)
            return orig(cmd, *args, **kwargs)
        extensions.wrapfunction(peer, '_calltwowaystream', wrapped)
    hg.wirepeersetupfuncs.append(wirereposetup)