#!/bin/sh
# Nico Schottelius, 12019-11-25

set -e

echo "incomplete script: partition table, size"
exit 1

version=3.10.3
tmpdir=$(mktemp -d)

file=alpine-standard-${version}-x86_64.iso
url=http://dl-cdn.alpinelinux.org/alpine/v3.10/releases/x86_64/$file

uefifile=${file%.iso}.efi

# FIXME: get this from the ISO and round up a bit - size in MiB
uefisize=200

wget -c "$url"

# cretae the output file
dd if=/dev/zero of=${uefifile} bs=1M count=${uefisize}

mkdir "$tmpdir/iso"
mkdir "$tmpdir/efi"

mkfs.vfat -F32 ${uefifile}

mount -o loop "${file}" "$tmpdir/iso"
mount -o loop "${uefifile}" "$tmpdir/efi"

cd "$tmpdir/iso"
tar c . | ( cd  "$tmpdir/efi"; tar xv )

umount "$tmpdir/iso"  "$tmpdir/efi"

# FIXME: create partition!!