sparse: move resolving of sparse patterns for rev into core
This method is reasonably well-contained and simple to move.
As part of the move, some light formatting was performed.
A "working copy" reference in an error message was changed to
"working directory."
The biggest change was to _refreshoncommit() in sparse.py. It
was previously checking for the existence of an attribute on
the repo instance. Since the moved function now returns empty
data if sparse isn't enabled, we unconditionally call the
new function. However, we do have to protect another method
call in that function. This will all be unhacked eventually.
# dirstateguard.py - class to allow restoring dirstate after failure
#
# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
#
# 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 .i18n import _
from . import (
error,
)
class dirstateguard(object):
'''Restore dirstate at unexpected failure.
At the construction, this class does:
- write current ``repo.dirstate`` out, and
- save ``.hg/dirstate`` into the backup file
This restores ``.hg/dirstate`` from backup file, if ``release()``
is invoked before ``close()``.
This just removes the backup file at ``close()`` before ``release()``.
'''
def __init__(self, repo, name):
self._repo = repo
self._active = False
self._closed = False
self._suffix = '.backup.%s.%d' % (name, id(self))
repo.dirstate.savebackup(repo.currenttransaction(), self._suffix)
self._active = True
def __del__(self):
if self._active: # still active
# this may occur, even if this class is used correctly:
# for example, releasing other resources like transaction
# may raise exception before ``dirstateguard.release`` in
# ``release(tr, ....)``.
self._abort()
def close(self):
if not self._active: # already inactivated
msg = (_("can't close already inactivated backup: dirstate%s")
% self._suffix)
raise error.Abort(msg)
self._repo.dirstate.clearbackup(self._repo.currenttransaction(),
self._suffix)
self._active = False
self._closed = True
def _abort(self):
self._repo.dirstate.restorebackup(self._repo.currenttransaction(),
self._suffix)
self._active = False
def release(self):
if not self._closed:
if not self._active: # already inactivated
msg = (_("can't release already inactivated backup:"
" dirstate%s")
% self._suffix)
raise error.Abort(msg)
self._abort()