branchcache: add a "pure topological head" fast path
In a narrow but actually quick common case, all topological heads are all on
the same branch and all open. In this case, computing the branch map is very
simple. We can quickly detect situation where this situation will not change.
So we update the V3 format to be able to express this situation and upgrade the
update code to detect we remains in that mode.
The branch cache is populated with the actual value when the branch map is
accessed, but the update_disk method can do the update without needing to
populate it.
#!/bin/sh -e
#
# Build a Mercurial debian package from the current repo
#
# Tested on Jessie (stable as of original script authoring.)
. $(dirname $0)/packagelib.sh
ROOTDIR=$(cd $(dirname $0)/../.. > /dev/null; pwd)
BUILD=1
CLEANUP=1
DISTID=`(lsb_release -is 2> /dev/null | tr '[:upper:]' '[:lower:]') || echo debian`
CODENAME=`lsb_release -cs 2> /dev/null || echo unknown`
DEBFLAGS=-b
cleanup() {
if [ "$CLEANUP" ]; then
rm -r "$ROOTDIR/debian";
fi
}
while [ "$1" ]; do
case "$1" in
--distid )
shift
DISTID="$1"
shift
;;
--codename )
shift
CODENAME="$1"
shift
;;
--cleanup )
shift
BUILD=
;;
--build )
shift
CLEANUP=
;;
--source-only )
shift
DEBFLAGS=-S
;;
* )
echo "Invalid parameter $1!" 1>&2
exit 1
;;
esac
done
cd "$ROOTDIR"
trap 'cleanup' EXIT
set -u
if [ ! -d .hg ]; then
printf "You are inside %s, which is not the root of a Mercurial repository\n" $(pwd) 1>&2
exit 1
fi
gethgversion
debver="$version"
if [ -n "$type" ] ; then
debver="$debver~$type"
fi
if [ -n "$distance" ] ; then
debver="$debver+$distance-$CODENAME-$node"
elif [ "$DEBFLAGS" = "-S" ] ; then
# for building a ppa (--source-only) for a release (distance == 0), we need
# to version the distroseries so that we can upload to launchpad
debver="$debver~${CODENAME}1"
fi
control=debian/control
changelog=debian/changelog
if [ "$BUILD" ]; then
if [ -d debian ] ; then
printf "Error! debian control directory already exists at %s/debian\n" $(pwd)
exit 1
fi
cp -r "$ROOTDIR"/contrib/packaging/debian debian
sed -i.tmp "s/__VERSION__/$debver/" $changelog
sed -i.tmp "s/__DATE__/$(date --rfc-2822)/" $changelog
sed -i.tmp "s/__CODENAME__/$CODENAME/" $changelog
rm $changelog.tmp
# remove the node from the version string
SRCFILE="mercurial_$(echo $debver | sed "s,-$node,,").orig.tar.gz"
"$ROOTDIR/hg" archive $SRCFILE
mv $SRCFILE ..
debuild -us -uc -i -I $DEBFLAGS
if [ $? != 0 ]; then
echo 'debuild failed!'
exit 1
fi
fi
if [ "$CLEANUP" ] ; then
echo
OUTPUTDIR=${OUTPUTDIR:=packages/$DISTID-$CODENAME}
mkdir -p "$OUTPUTDIR"
find ../mercurial*.deb ../mercurial_*.build* ../mercurial_*.changes \
../mercurial*.dsc ../mercurial*.gz \
-type f -newer $control -print0 2>/dev/null | \
xargs -Inarf -0 mv narf "$OUTPUTDIR"
echo "Built packages for $debver:"
find "$OUTPUTDIR" -type f -newer $control -name '*.deb'
fi