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# __init__.py - narrowhg extension
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#
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# Copyright 2017 Google, Inc.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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'''create clones which fetch history data for subset of files (EXPERIMENTAL)'''
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from __future__ import absolute_import
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# Note for extension authors: ONLY specify testedwith = 'ships-with-hg-core' 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 = 'ships-with-hg-core'
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from mercurial import (
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extensions,
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hg,
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localrepo,
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registrar,
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verify as verifymod,
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)
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from . import (
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narrowbundle2,
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narrowchangegroup,
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narrowcommands,
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narrowcopies,
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narrowdirstate,
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narrowmerge,
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narrowpatch,
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narrowrepo,
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narrowrevlog,
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narrowtemplates,
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narrowwirepeer,
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)
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configtable = {}
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configitem = registrar.configitem(configtable)
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# Narrowhg *has* support for serving ellipsis nodes (which are used at
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# least by Google's internal server), but that support is pretty
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# fragile and has a lot of problems on real-world repositories that
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# have complex graph topologies. This could probably be corrected, but
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# absent someone needing the full support for ellipsis nodes in
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# repositories with merges, it's unlikely this work will get done. As
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# of this writining in late 2017, all repositories large enough for
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# ellipsis nodes to be a hard requirement also enforce strictly linear
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# history for other scaling reasons.
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configitem('experimental', 'narrowservebrokenellipses',
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default=False,
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alias=[('narrow', 'serveellipses')],
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)
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# Export the commands table for Mercurial to see.
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cmdtable = narrowcommands.table
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localrepo.localrepository._basesupported.add(narrowrepo.REQUIREMENT)
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def uisetup(ui):
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"""Wraps user-facing mercurial commands with narrow-aware versions."""
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narrowrevlog.setup()
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narrowbundle2.setup()
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narrowmerge.setup()
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narrowtemplates.setup()
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narrowcommands.setup()
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narrowchangegroup.setup()
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narrowwirepeer.uisetup()
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def reposetup(ui, repo):
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"""Wraps local repositories with narrow repo support."""
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if not isinstance(repo, localrepo.localrepository):
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return
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if narrowrepo.REQUIREMENT in repo.requirements:
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narrowrepo.wraprepo(repo, True)
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narrowcopies.setup(repo)
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narrowdirstate.setup(repo)
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narrowpatch.setup(repo)
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narrowwirepeer.reposetup(repo)
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def _verifierinit(orig, self, repo, matcher=None):
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# The verifier's matcher argument was desgined for narrowhg, so it should
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# be None from core. If another extension passes a matcher (unlikely),
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# we'll have to fail until matchers can be composed more easily.
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assert matcher is None
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matcher = getattr(repo, 'narrowmatch', lambda: None)()
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orig(self, repo, matcher)
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def extsetup(ui):
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extensions.wrapfunction(verifymod.verifier, '__init__', _verifierinit)
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extensions.wrapfunction(hg, 'postshare', narrowrepo.wrappostshare)
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extensions.wrapfunction(hg, 'copystore', narrowrepo.unsharenarrowspec)
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