mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 16:57:49 +03:00
ab3a7cb21f
Summary: In preparation for merging fb-mercurial sources to the Eden repository, move everything from the top-level directory into an `eden/scm` subdirectory.
63 lines
2.0 KiB
Python
63 lines
2.0 KiB
Python
# Portions Copyright (c) Facebook, Inc. and its affiliates.
|
|
#
|
|
# This software may be used and distributed according to the terms of the
|
|
# GNU General Public License version 2.
|
|
|
|
# txnutil.py - transaction related utilities
|
|
#
|
|
# Copyright FUJIWARA Katsunori <foozy@lares.dti.ne.jp> and others
|
|
#
|
|
# 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
|
|
|
|
import errno
|
|
|
|
from . import encoding
|
|
|
|
|
|
def mayhavepending(root):
|
|
"""return whether 'root' may have pending changes, which are
|
|
visible to this process.
|
|
"""
|
|
localispending = root == encoding.environ.get("HG_PENDING")
|
|
localissharedpending = root == encoding.environ.get("HG_SHAREDPENDING")
|
|
return localispending or localissharedpending
|
|
|
|
|
|
def mayhavesharedpending(root, sharedroot):
|
|
"""return whether 'root' or 'sharedroot' may have pending changes, which
|
|
are visible to this process.
|
|
"""
|
|
localispending = root == encoding.environ.get("HG_PENDING")
|
|
sharedissharedpending = sharedroot == encoding.environ.get("HG_SHAREDPENDING")
|
|
return localispending or sharedissharedpending
|
|
|
|
|
|
def trypending(root, vfs, filename, **kwargs):
|
|
"""Open a file to be read according to the HG_PENDING environment variable.
|
|
|
|
This opens '.pending' of specified 'filename' only when HG_PENDING
|
|
is equal to 'root'.
|
|
|
|
This returns '(fp, is_pending_opened)' tuple.
|
|
"""
|
|
if mayhavepending(root):
|
|
try:
|
|
return (vfs("%s.pending" % filename, **kwargs), True)
|
|
except IOError as inst:
|
|
if inst.errno != errno.ENOENT:
|
|
raise
|
|
return (vfs(filename, **kwargs), False)
|
|
|
|
|
|
def trysharedpending(root, sharedroot, vfs, filename, **kwargs):
|
|
if mayhavesharedpending(root, sharedroot):
|
|
try:
|
|
return (vfs("%s.pending" % filename, **kwargs), True)
|
|
except IOError as inst:
|
|
if inst.errno != errno.ENOENT:
|
|
raise
|
|
return (vfs(filename, **kwargs), False)
|