Mercurial > public > mercurial-scm > hg

annotate mercurial/txnutil.py @ 45625:c11099cc1de4

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log: map --removed to walkopts.force_changelog_traversal This is the flag to forcibly enable the slowpath. I'm not sure if the slowpath parameter should be merged with this flag, so let's keep it as an immutable flag for now. I'll add another flag to support "grep --all-files". These two will be the flags which aren't directly mapped from the command-line options.
author Yuya Nishihara <yuya@tcha.org>
date Sat, 12 Sep 2020 21:54:58 +0900
parents 687b865b95ad
children 89a2afe31e82
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1 # txnutil.py - transaction related utilities
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2 #
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3 # Copyright FUJIWARA Katsunori <foozy@lares.dti.ne.jp> and others
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 from __future__ import absolute_import
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9
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10 import errno
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11
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12 from . import encoding
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13
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14
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15 def mayhavepending(root):
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16 '''return whether 'root' may have pending changes, which are
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17 visible to this process.
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18 '''
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19 return root == encoding.environ.get(b'HG_PENDING')
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20
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22 def trypending(root, vfs, filename, **kwargs):
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23 '''Open file to be read according to HG_PENDING environment variable
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24
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25 This opens '.pending' of specified 'filename' only when HG_PENDING
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26 is equal to 'root'.
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27
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28 This returns '(fp, is_pending_opened)' tuple.
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29 '''
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30 if mayhavepending(root):
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31 try:
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32 return (vfs(b'%s.pending' % filename, **kwargs), True)
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33 except IOError as inst:
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34 if inst.errno != errno.ENOENT:
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35 raise
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36 return (vfs(filename, **kwargs), False)