#!/bin/bash

# finds optimal --min-size value for bloc

target="blc"

# remove files on exit
trap 'rm -f "$file".bloc "$file".bloc."$target"; exit 0' EXIT SIGINT SIGTERM

if [ $# -eq 0 ]; then
	echo "Usage: $0 <file>"
	exit 1
fi

file=$1

function try {
	bloc --from-blc -i "$file" -o "$file".bloc -m "$1"
	blocade -i "$file".bloc -t "$target" -o "$file".bloc."$target"
	size="$(stat -c %s "$file".bloc."$target")"
}

low=5
high=100000
best=100000000000000000
while [ $low -lt $high ]; do
	mid=$(((low + high) / 2))
	try $mid
	echo "$mid: $size"
	if [ "$size" -le $best ]; then
		best=$size
		high=$((mid - 1))
	else
		low=$((mid + 1))
	fi
done