Mercurial > hg
view mercurial/txnutil.py @ 40267:9d5ddf55415b
revlog: allow flag processors to be applied via store options
This allows flag processors to be registered to specific repos in an extension
by wrapping localrepo.resolverevlogstorevfsoptions(). I wanted to add the
processors via a function on localrepo, but some of the places where the
processors are globally registered don't have a repository available. This
makes targeting specific repos in the wrapper awkward, but still manageable.
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Tue, 09 Oct 2018 21:53:21 -0400 |
parents | 206532700213 |
children | 2372284d9457 |
line wrap: on
line source
# 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('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('%s.pending' % filename, **kwargs), True) except IOError as inst: if inst.errno != errno.ENOENT: raise return (vfs(filename, **kwargs), False)