#!/usr/bin/env bash
# Prints the size of a file + gzipped size

human_print(){
while read B dummy; do
  [ $B -lt 1024 ] && echo ${B} bytes && break
  KB=$(((B+512)/1024))
  [ $KB -lt 1024 ] && echo ${KB} kilobytes && break
  MB=$(((KB+512)/1024))
  [ $MB -lt 1024 ] && echo ${MB} megabytes && break
  GB=$(((MB+512)/1024))
  [ $GB -lt 1024 ] && echo ${GB} gigabytes && break
  echo $(((GB+512)/1024)) terabytes
done
}

export FILE_NAME=$1

export UNCOMPRESSED_FILE_SIZE=`wc -c < $FILE_NAME`
export GZIPPED_FILE_SIZE=`gzip -c < $FILE_NAME | wc -c`

echo "File size: $(echo $UNCOMPRESSED_FILE_SIZE | human_print)"
echo "gzipped size: $(echo $GZIPPED_FILE_SIZE | human_print)"
echo
echo "Machine readable:"
echo "FILE_SIZE: $UNCOMPRESSED_FILE_SIZE,$GZIPPED_FILE_SIZE"