shrink-revlog: improve performance: use changegroup instead of revisions
Before:
real 0m23.971s
Now:
real 0m4.229s
The only case where the output would be different is if the newer hg was using
a different diff algorithm than used originally.
#!/bin/sh
CONTRIBDIR=$TESTDIR/../contrib
echo % prepare repo-a
mkdir repo-a
cd repo-a
hg init
echo this is file a > a
hg add a
hg commit -m first
echo adding to file a >> a
hg commit -m second
echo adding more to file a >> a
hg commit -m third
hg verify
echo
echo % dumping revlog of file a to stdout
python $CONTRIBDIR/dumprevlog .hg/store/data/a.i
echo % dumprevlog done
echo
echo % dump all revlogs to file repo.dump
find .hg/store -name "*.i" | sort | xargs python $CONTRIBDIR/dumprevlog > ../repo.dump
cd ..
mkdir repo-b
cd repo-b
hg init
echo
echo % undumping into repo-b
python $CONTRIBDIR/undumprevlog < ../repo.dump
echo % undumping done
cd ..
echo
echo % clone --pull repo-b repo-c to rebuild fncache
hg clone --pull -U repo-b repo-c
cd repo-c
echo
echo % verify repo-c
hg verify
cd ..
echo
echo % comparing repos
hg -R repo-c incoming repo-a
hg -R repo-a incoming repo-c
exit 0