Mercurial > hg
view tests/autodiff.py @ 39594:bdb41eaa8b59
snapshot: fix line order when skipping over empty deltas
The code movement in 37957e07138c introduced an error.
Since 8f83a953dddf, we discarded some revisions because they are identical to
their delta base (and use that delta base instead). That logic is good,
however, in 37957e07138c we mixed up the order of two line, adding the "new"
revision to the set of already tested one, instead of the discarded one. So in
practice, we were never investigating any revisions in a chain starting with
an empty delta. Creating significantly worst delta chain (eg: Mercurial's
manifest move goes from about 60MB up to about 80MB).
author | Boris Feld <boris.feld@octobus.net> |
---|---|
date | Mon, 10 Sep 2018 10:11:21 +0200 |
parents | cdccfe20eed7 |
children | 2372284d9457 |
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# Extension dedicated to test patch.diff() upgrade modes from __future__ import absolute_import from mercurial import ( error, patch, pycompat, registrar, scmutil, ) cmdtable = {} command = registrar.command(cmdtable) @command(b'autodiff', [(b'', b'git', b'', b'git upgrade mode (yes/no/auto/warn/abort)')], b'[OPTION]... [FILE]...') def autodiff(ui, repo, *pats, **opts): opts = pycompat.byteskwargs(opts) diffopts = patch.difffeatureopts(ui, opts) git = opts.get(b'git', b'no') brokenfiles = set() losedatafn = None if git in (b'yes', b'no'): diffopts.git = git == b'yes' diffopts.upgrade = False elif git == b'auto': diffopts.git = False diffopts.upgrade = True elif git == b'warn': diffopts.git = False diffopts.upgrade = True def losedatafn(fn=None, **kwargs): brokenfiles.add(fn) return True elif git == b'abort': diffopts.git = False diffopts.upgrade = True def losedatafn(fn=None, **kwargs): raise error.Abort(b'losing data for %s' % fn) else: raise error.Abort(b'--git must be yes, no or auto') ctx1, ctx2 = scmutil.revpair(repo, []) m = scmutil.match(ctx2, pats, opts) it = patch.diff(repo, ctx1.node(), ctx2.node(), match=m, opts=diffopts, losedatafn=losedatafn) for chunk in it: ui.write(chunk) for fn in sorted(brokenfiles): ui.write((b'data lost for: %s\n' % fn))