Mercurial > hg
diff contrib/shrink-revlog.py @ 10622:bc81f126139f
shrink-revlog: add --sort option for user-selectable toposort algorithm.
author | Greg Ward <greg-hg@gerg.ca> |
---|---|
date | Thu, 25 Feb 2010 09:16:39 -0500 |
parents | c93f0a23f381 |
children | 64e286c22f29 |
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--- a/contrib/shrink-revlog.py Tue Mar 09 21:30:19 2010 -0500 +++ b/contrib/shrink-revlog.py Thu Feb 25 09:16:39 2010 -0500 @@ -24,7 +24,7 @@ from mercurial import changegroup from mercurial.i18n import _ -def toposort(ui, rl): +def toposort_branchsort(ui, rl): children = {} root = [] @@ -130,9 +130,18 @@ % (shrink_percent, shrink_factor)) def shrink(ui, repo, **opts): + """shrink a revlog by reordering revisions + + Rewrites all the entries in some revlog of the current repository + (by default, the manifest log) to save space. + + Different sort algorithms have different performance + characteristics. Use ``--sort`` to select a sort algorithm so you + can determine which works best for your data. The default + algorithm, ``branchsort``, works well for workflows with lots of + active (unmerged) branches, but not so well when all branches have + been merged and there is only one repository head. """ - Shrink revlog by re-ordering revisions. Will operate on manifest for - the given repository if no other revlog is specified.""" if not repo.local(): raise util.Abort(_('not a local repository: %s') % repo.root) @@ -151,6 +160,12 @@ raise util.Abort(_('--revlog option must specify a revlog in %s, ' 'not %s') % (store, indexfn)) + sortname = opts['sort'] + try: + toposort = globals()['toposort_' + sortname] + except KeyError: + raise util.Abort(_('no such toposort algorithm: %s') % sortname) + if not os.path.exists(indexfn): raise util.Abort(_('no such file: %s') % indexfn) if '00changelog' in indexfn: @@ -241,6 +256,7 @@ 'shrink': (shrink, [('', 'revlog', '', _('index (.i) file of the revlog to shrink')), ('n', 'dry-run', None, _('do not shrink, simulate only')), + ('', 'sort', 'branchsort', 'name of sort algorithm to use'), ], _('hg shrink [--revlog PATH]')) }