#!/bin/sh

if [ $# -lt 1 ]; then
	echo "usage: update-rt <kernel-version> [starting-number]"
	exit
fi

ver=$1

shift

let x=1
if [ $# -gt 0 ]; then
	let x=$1
fi

if [ ! -d ".git" ]; then
	echo "must run in a git directory"
	exit -1;
fi

rev="v${ver}"
rtrev="${rev}-rt"

if [ ! -f ".git/refs/tags/${rev}" ]; then
	echo "version ${ver} must be tagged already"
	exit -1;
fi

if [ ! -f ".git/refs/heads/${rtrev}" ]; then
	echo "git-branch $rtrev $rev"
	git-branch $rtrev $rev || exit -1
fi

echo "git-checkout -f ${rtrev}"
git-checkout -f ${rtrev} || exit -1

echo "git-clean -d"
git-clean -d || exit -1

while : ; do
	t="${ver}-rt$x"
	rt="${rtrev}$x"
	let x=$x+1
	if [ -f .git/refs/tags/${rt} ]; then
		echo "skipping $rt"
		continue
	fi
	echo "trying $t"
	ketchup -w "/usr/bin/wget -q" -q $t || exit 0
	echo "git-add"
	git-add || exit -1
	echo "git-commit -a -m $t realtime patch"
	git-commit -a -m "$t realtime patch" || exit -1
	echo "git-tag $rt"
	git-tag $rt || exit 1
done