#!/usr/bin/bash
# Quick hack to convert $1 (PDF file) to CBZ.
function die() {
    local rc=$?; shift; echo "$@" 1>&2; exit $rc
}
f="${1}"
test -f "$f" || die $? "File not found: $f"
p=0
base="${f%%.pdf}"
cbz="${base}.cbz"
fmt=${IMGEXT-jpg}
density=${IMGDENSITY-200}
echo -n "[$f] ==> [${cbz}] "
rm -f [0-9][0-9][0-9][0-9].${fmt}
while true; do
    n=$(printf '%04d' $p)
    out="${n}.${fmt}"
    echo -n "$n "
    convert -density ${density} -flatten "${f}[$p]" -quality 95 $n.${fmt} || break
    p=$((p + 1))
done
echo
ls -1 [0-9][0-9][0-9][0-9].${fmt} | sort | zip -q0@ "${cbz}" || die $? "zip failed"
rm -f [0-9][0-9][0-9][0-9].${fmt}
ls -la ${cbz}