Mercurial > hg
view mercurial/txnutil.py @ 48893:895085109842
archival: remove check for Python 2
Differential Revision: https://phab.mercurial-scm.org/D12296
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Mon, 21 Feb 2022 10:31:00 -0700 |
parents | 6000f5b25c9b |
children | 2e726c934fcd |
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. 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)