#!/bin/bash

set -e

if [ ! "${3}" ]; then 
 printf "$0 xorriso_cmd dir_in image_out [--clean]\n"
 exit 1;
fi

XOR=${1}
DIR=${2}
IMG=${3}
RES="${IMG}.iso ${IMG}.new ${IMG}.md5 ${IMG}.jigdo ${IMG}.template"

# remove cruft from previous runs
# rm -f ${RES}

jigdo-gen-md5-list ${DIR} > ${IMG}.md5

${XOR} \
   -as mkisofs \
   -o ${IMG}.iso \
   -R -V 'ISO_JIGDO' \
   -partition_offset 16 \
   -J -joliet-long \
   \
   -jigdo-template-compress gzip \
   -checksum_algorithm_iso md5,sha1,sha256,sha512 \
   -checksum_algorithm_template md5,sha1,sha256,sha512 \
   -jigdo-jigdo ${IMG}.jigdo \
   -jigdo-template ${IMG}.template \
   -jigdo-map Debian=${DIR} \
   -md5-list  ${IMG}.md5 \
   -jigdo-min-file-size 1024 \
   \
   ${DIR}

jigit-mkimage \
   -t ${IMG}.template \
   -j ${IMG}.jigdo \
   -m Debian=${DIR} \
   -o ${IMG}.new

diff ${IMG}.iso ${IMG}.new

# sort out the cruft
if [ "${4}" == "--clean" ]; then
 rm -f ${RES}
 printf "removed: %s\n" ${RES}
else
 printf "left: %s\n" ${RES}
fi