Mercurial > hg
view mercurial/txnutil.py @ 43027:041f042afcc5
copies: move file input processsing early
If we are to store the same kind of data outside of extra, we need to explicitly
prepare them before that.
On the long run, other storage (eg: sidedata) might use a different encoding to store this
information, since the constraint from extra does not apply to it.
Differential Revision: https://phab.mercurial-scm.org/D6937
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Wed, 25 Sep 2019 03:58:46 +0200 |
parents | 206532700213 |
children | 2372284d9457 |
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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('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)