Mercurial > hg
view mercurial/txnutil.py @ 46719:0732a7264226
configitems: add TODOs blocking the move out of experimental for revlogv2
These are the todos so far, we probably will have more, but we might as well
list them while they're fresh in our minds.
Differential Revision: https://phab.mercurial-scm.org/D10216
author | Raphaël Gomès <rgomes@octobus.net> |
---|---|
date | Mon, 15 Mar 2021 10:57:02 +0100 |
parents | 89a2afe31e82 |
children | 6000f5b25c9b |
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# 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. """ return root == encoding.environ.get(b'HG_PENDING') def trypending(root, vfs, filename, **kwargs): """Open file to be read according to 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(b'%s.pending' % filename, **kwargs), True) except IOError as inst: if inst.errno != errno.ENOENT: raise return (vfs(filename, **kwargs), False)