grep: extract main search loop as searcher method
Still displayer part is in commands.grep(), the core grep logic is now
reusable. I'll revisit the displayer stuff later since it will be another
long series.
# bruterebase.py - brute force rebase testing
#
# Copyright 2017 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.
from __future__ import absolute_import
from mercurial import (
error,
registrar,
revsetlang,
)
from hgext import rebase
try:
xrange
except NameError:
xrange = range
cmdtable = {}
command = registrar.command(cmdtable)
@command(b'debugbruterebase')
def debugbruterebase(ui, repo, source, dest):
"""for every non-empty subset of source, run rebase -r subset -d dest
Print one line summary for each subset. Assume obsstore is enabled.
"""
srevs = list(repo.revs(source))
with repo.wlock(), repo.lock():
repolen = len(repo)
cl = repo.changelog
def getdesc(rev):
result = cl.changelogrevision(rev).description
if rev >= repolen:
result += b"'"
return result
for i in xrange(1, 2 ** len(srevs)):
subset = [rev for j, rev in enumerate(srevs) if i & (1 << j) != 0]
spec = revsetlang.formatspec(b'%ld', subset)
tr = repo.transaction(b'rebase')
tr._report = lambda x: 0 # hide "transaction abort"
ui.pushbuffer()
try:
rebase.rebase(ui, repo, dest=dest, rev=[spec])
except error.Abort as ex:
summary = b'ABORT: %s' % ex.message
except Exception as ex:
summary = b'CRASH: %s' % ex
else:
# short summary about new nodes
cl = repo.changelog
descs = []
for rev in xrange(repolen, len(repo)):
desc = b'%s:' % getdesc(rev)
for prev in cl.parentrevs(rev):
if prev > -1:
desc += getdesc(prev)
descs.append(desc)
descs.sort()
summary = b' '.join(descs)
ui.popbuffer()
repo.vfs.tryunlink(b'rebasestate')
subsetdesc = b''.join(getdesc(rev) for rev in subset)
ui.write(b'%s: %s\n' % (subsetdesc.rjust(len(srevs)), summary))
tr.abort()