sapling/edenscm/hgext/p4fastimport/lfs.py
Jun Wu 9dc21f8d0b codemod: import from the edenscm package
Summary:
D13853115 adds `edenscm/` to `sys.path` and code still uses `import mercurial`.
That has nasty problems if both `import mercurial` and
`import edenscm.mercurial` are used, because Python would think `mercurial.foo`
and `edenscm.mercurial.foo` are different modules so code like
`try: ... except mercurial.error.Foo: ...`, or `isinstance(x, mercurial.foo.Bar)`
would fail to handle the `edenscm.mercurial` version. There are also some
module-level states (ex. `extensions._extensions`) that would cause trouble if
they have multiple versions in a single process.

Change imports to use the `edenscm` so ideally the `mercurial` is no longer
imported at all. Add checks in extensions.py to catch unexpected extensions
importing modules from the old (wrong) locations when running tests.

Reviewed By: phillco

Differential Revision: D13868981

fbshipit-source-id: f4e2513766957fd81d85407994f7521a08e4de48
2019-01-29 17:25:32 -08:00

28 lines
669 B
Python

# Copyright 2018 Facebook, Inc.
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
# (c) 2017-present Facebook Inc.
from __future__ import absolute_import
from edenscm.mercurial import extensions
lfsext = None
try:
lfsext = extensions.find("lfs")
except KeyError:
pass
def getlfsinfo(hgfilelog, node):
if lfsext is None:
return False, None
islfs = lfsext.wrapper._islfs(hgfilelog, node)
oid = None
if islfs:
lfspointer = lfsext.pointer.deserialize(hgfilelog.revision(node, raw=True))
oid = lfspointer.oid()
return islfs, oid