#!/bin/sh

setglobal QEMU_IMAGE = 'linuxkit/qemu:4563d58e97958f4941fbef9e74cabc08bd402144@sha256:b2db0b13ba1cbb6b48218f088fe0a4d860e1db2c4c6381b5416536f48a612230'

# if not interactive
if test ! -t 0 -a -z $1
{
	# non interactive, tarball input
	docker run -i --rm $QEMU_IMAGE
	exit $?
}

setglobal FILE = $1
setglobal FILE2 = $2
setglobal CMDLINE = $3
test -z $FILE && setglobal FILE = ""$PWD/moby""

setglobal BASE = $[basename $FILE]
setglobal DIR = $[dirname $FILE]
if test ! -f $FILE -a -f $DIR/$BASE-initrd.img -a -f $DIR/$BASE-bzImage
{
	setglobal FILE = "$DIR/$BASE-initrd.img"
	setglobal FILE2 = "$DIR/$BASE-bzImage"
}

echo $FILE | grep -q '^/' || setglobal FILE = ""$PWD/$FILE""
if test ! -z $FILE2
{
	echo $FILE2 | grep -q '^/' || setglobal FILE2 = ""$PWD/$FILE2""
}
if test ! -z $CMDLINE
{
	echo $CMDLINE | grep -q '^/' || setglobal CMDLINE = ""$PWD/$CMDLINE""
}

if test -c "/dev/kvm"  {
    setglobal DEVKVM = '"--device=/dev/kvm'"
}
setglobal BASE = $[basename $FILE]
setglobal MOUNTS = ""-v $FILE:/tmp/$BASE""
setglobal BASE2 = $[basename $FILE2]
setglobal BASE3 = $[basename $CMDLINE]

test ! -z $FILE2 && setglobal MOUNTS = ""$MOUNTS -v $FILE2:/tmp/$BASE2""
test ! -z $CMDLINE && setglobal MOUNTS = ""$MOUNTS -v $CMDLINE:/tmp/$BASE3""

docker run -it --rm $MOUNTS $DEVKVM $QEMU_IMAGE