localrepo: move some vfs initialization out of __init__
In order to make repository types more dynamic, we'll need to move the
logic for determining repository behavior out of
localrepository.__init__ so we can influence behavior before the type
is instantiated.
This commit starts that process by moving working directory and .hg/
vfs initialization to our new standalone function for instantiating
local repositories.
Aside from API changes, behavior should be fully backwards compatible.
.. api::
localrepository.__init__ now does less work and accepts new args
Use ``hg.repository()``, ``localrepo.instance()``, or
``localrepo.makelocalrepository()`` to obtain a new local repository
instance instead of calling the ``localrepository`` constructor
directly.
Differential Revision: https://phab.mercurial-scm.org/D4564
from __future__ import absolute_import
import __builtin__
import os
from mercurial import (
util,
)
def lowerwrap(scope, funcname):
f = getattr(scope, funcname)
def wrap(fname, *args, **kwargs):
d, base = os.path.split(fname)
try:
files = os.listdir(d or '.')
except OSError:
files = []
if base in files:
return f(fname, *args, **kwargs)
for fn in files:
if fn.lower() == base.lower():
return f(os.path.join(d, fn), *args, **kwargs)
return f(fname, *args, **kwargs)
scope.__dict__[funcname] = wrap
def normcase(path):
return path.lower()
os.path.normcase = normcase
for f in 'file open'.split():
lowerwrap(__builtin__, f)
for f in "chmod chown open lstat stat remove unlink".split():
lowerwrap(os, f)
for f in "exists lexists".split():
lowerwrap(os.path, f)
lowerwrap(util, 'posixfile')