Mercurial > hg
view hgext/automv.py @ 37947:3ea3c96ada54
encoding: introduce tagging type for non-lossy non-ASCII string
This fixes the weird behavior of toutf8b(), which would convert a local
string back to UTF-8 *only if* it was lossy in the system encoding.
Before b7b26e54e37a "encoding: avoid localstr when a string can be encoded
losslessly (issue2763)", all local strings were wrapped by the localstr
class. I think this would justify the round-trip behavior of toutf8b().
ASCII strings are special-cased, so the cost of wrapping with safelocalstr
is negligible.
(with mercurial repo)
$ export HGRCPATH=/dev/null HGPLAIN= HGENCODING=latin-1
$ hg log --time --config experimental.evolution=all > /dev/null
(original)
time: real 11.340 secs (user 11.290+0.000 sys 0.060+0.000)
time: real 11.390 secs (user 11.300+0.000 sys 0.080+0.000)
time: real 11.430 secs (user 11.360+0.000 sys 0.070+0.000)
(this patch)
time: real 11.200 secs (user 11.100+0.000 sys 0.100+0.000)
time: real 11.370 secs (user 11.300+0.000 sys 0.070+0.000)
time: real 11.190 secs (user 11.130+0.000 sys 0.060+0.000)
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Sun, 23 Apr 2017 13:15:30 +0900 |
parents | 38637dd39cfd |
children | f89aad980025 |
line wrap: on
line source
# automv.py # # Copyright 2013-2016 Facebook, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. """check for unrecorded moves at commit time (EXPERIMENTAL) This extension checks at commit/amend time if any of the committed files comes from an unrecorded mv. The threshold at which a file is considered a move can be set with the ``automv.similarity`` config option. This option takes a percentage between 0 (disabled) and 100 (files must be identical), the default is 95. """ # Using 95 as a default similarity is based on an analysis of the mercurial # repositories of the cpython, mozilla-central & mercurial repositories, as # well as 2 very large facebook repositories. At 95 50% of all potential # missed moves would be caught, as well as correspond with 87% of all # explicitly marked moves. Together, 80% of moved files are 95% similar or # more. # # See http://markmail.org/thread/5pxnljesvufvom57 for context. from __future__ import absolute_import from mercurial.i18n import _ from mercurial import ( commands, copies, error, extensions, pycompat, registrar, scmutil, similar ) configtable = {} configitem = registrar.configitem(configtable) configitem('automv', 'similarity', default=95, ) def extsetup(ui): entry = extensions.wrapcommand( commands.table, 'commit', mvcheck) entry[1].append( ('', 'no-automv', None, _('disable automatic file move detection'))) def mvcheck(orig, ui, repo, *pats, **opts): """Hook to check for moves at commit time""" opts = pycompat.byteskwargs(opts) renames = None disabled = opts.pop('no_automv', False) if not disabled: threshold = ui.configint('automv', 'similarity') if not 0 <= threshold <= 100: raise error.Abort(_('automv.similarity must be between 0 and 100')) if threshold > 0: match = scmutil.match(repo[None], pats, opts) added, removed = _interestingfiles(repo, match) renames = _findrenames(repo, match, added, removed, threshold / 100.0) with repo.wlock(): if renames is not None: scmutil._markchanges(repo, (), (), renames) return orig(ui, repo, *pats, **pycompat.strkwargs(opts)) def _interestingfiles(repo, matcher): """Find what files were added or removed in this commit. Returns a tuple of two lists: (added, removed). Only files not *already* marked as moved are included in the added list. """ stat = repo.status(match=matcher) added = stat[1] removed = stat[2] copy = copies._forwardcopies(repo['.'], repo[None], matcher) # remove the copy files for which we already have copy info added = [f for f in added if f not in copy] return added, removed def _findrenames(repo, matcher, added, removed, similarity): """Find what files in added are really moved files. Any file named in removed that is at least similarity% similar to a file in added is seen as a rename. """ renames = {} if similarity > 0: for src, dst, score in similar.findrenames( repo, added, removed, similarity): if repo.ui.verbose: repo.ui.status( _('detected move of %s as %s (%d%% similar)\n') % ( matcher.rel(src), matcher.rel(dst), score * 100)) renames[dst] = src if renames: repo.ui.status(_('detected move of %d files\n') % len(renames)) return renames