Mercurial > hg
view mercurial/txnutil.py @ 51099:eba138890c64
revlog: move entry writing in the inner object
This is the second big piece of API we want to live on the inner object. With
this the inner object have freedom it needs to implement things internally.
(except for the delayed write feature of the changelog, that will be migrated in coming changesets)
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Thu, 19 Oct 2023 05:19:55 +0200 |
parents | 2e726c934fcd |
children |
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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 . 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 FileNotFoundError: pass return (vfs(filename, **kwargs), False)