manifest: add getstorage() to manifestlog and use it globally
It is a common pattern to obtain a directory manifest storage instance
(a manifestrevlog) by going through manifestlog._revlog.dirlog().
Why access to storage and caching of other manifests is done through
manifestrevlog instead of manifestlog, I don't know.
This commit establishes a getstorage(tree) API on manifestlog and
imanifestlog that provides a public API for accessing manifest storage.
All consumers previously using private attributes have been updated
to use this new method.
.. api:: manifestlog now has a getstorage(tree) method
It should be used for obtaining an object representing the
manifest's storage implementation. Accessing
manifestlog._revlog should be avoided.
Differential Revision: https://phab.mercurial-scm.org/D4277
# narrowdirstate.py - extensions to mercurial dirstate to support narrow clones
#
# 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,
match as matchmod,
)
def wrapdirstate(repo, dirstate):
"""Add narrow spec dirstate ignore, block changes outside narrow spec."""
def _editfunc(fn):
def _wrapper(self, *args):
dirstate = repo.dirstate
narrowmatch = repo.narrowmatch()
for f in args:
if f is not None and not narrowmatch(f) and f not in dirstate:
raise error.Abort(_("cannot track '%s' - it is outside " +
"the narrow clone") % f)
return fn(self, *args)
return _wrapper
class narrowdirstate(dirstate.__class__):
def walk(self, match, subrepos, unknown, ignored, full=True,
narrowonly=True):
if narrowonly:
# hack to not exclude explicitly-specified paths so that they
# can be warned later on e.g. dirstate.add()
em = matchmod.exact(match._root, match._cwd, match.files())
nm = matchmod.unionmatcher([repo.narrowmatch(), em])
match = matchmod.intersectmatchers(match, nm)
return super(narrowdirstate, self).walk(match, subrepos, unknown,
ignored, full)
# Prevent adding/editing/copying/deleting files that are outside the
# sparse checkout
@_editfunc
def normal(self, *args):
return super(narrowdirstate, self).normal(*args)
@_editfunc
def add(self, *args):
return super(narrowdirstate, self).add(*args)
@_editfunc
def normallookup(self, *args):
return super(narrowdirstate, self).normallookup(*args)
@_editfunc
def copy(self, *args):
return super(narrowdirstate, self).copy(*args)
@_editfunc
def remove(self, *args):
return super(narrowdirstate, self).remove(*args)
@_editfunc
def merge(self, *args):
return super(narrowdirstate, self).merge(*args)
def rebuild(self, parent, allfiles, changedfiles=None):
if changedfiles is None:
# Rebuilding entire dirstate, let's filter allfiles to match the
# narrowspec.
allfiles = [f for f in allfiles if repo.narrowmatch()(f)]
super(narrowdirstate, self).rebuild(parent, allfiles, changedfiles)
dirstate.__class__ = narrowdirstate
return dirstate