A script to clean-up cbz and cbr files

cbzclean

#!/bin/bash

#TODO: evaluate using --store option for recompression
#TODO: fix case-sensitive match in basename (not an issue for me)

shopt -s nocaseglob

suffix='(clean)'
maxjobs=16

function shrink
{
	chmod -R 755 ./*
	rm -rf "__MACOSX"
	rm -rf ".DS_Store"
#	flatten directories
	find . -mindepth 2 -type f -exec mv -t . -i '{}' +
#	optimize any pngs
	optipng -q -clobber -fix ./*.png
#	optimize any jpegs
	jpegoptim -q --all-progressive ./*.jpg
	jpegoptim -q --all-progressive ./*.jpeg

}

function open_cbz
{
	echo "Cleaning $1..."
	local bkname=$(basename "$1" '.cbz')
	local parent=$(pwd)
	local bkpath="/dev/shm/$bkname"
	unzip -q "$1" -d "$bkpath"
	cd "$bkpath"
	shrink
	zip -qrj "$parent/$bkname$suffix.cbz" .
	cd "$parent"
	rm -rf "$bkpath"
}

function open_cbr
{
	echo "Cleaning $1..."
	local bkname=$(basename "$1" '.cbr')
	local parent=$(pwd)
	local bkpath="/dev/shm/$bkname(rar)"
	mkdir "$bkpath"
	unrar x -idq "$1" "$bkpath"
	cd "$bkpath"
	shrink
	zip -qrj "$parent/$bkname$suffix(rar).cbz" .
	cd "$parent"
	rm -rf "$bkpath"
}

for book in *.cbz *.cbr
do
	while [[ $(jobs | wc -l) -ge $maxjobs ]]
	do
		sleep 2
	done
	if [[ "$book" = *.cbz ]]
	then
		open_cbz "$book" &
	elif [[ "$book" = *.cbr ]]
	then
		open_cbr "$book" &
	fi
done

wait