#!/bin/bash

_ak_fs_return_hash_path(){
    hashpath="$(echo -n "$1" |sed 's/./&\//g;s/\/$//g')"
    echo -n "$hashpath"
}

_ak_fs_return_hash_dir(){
    hashdir="$(echo -n "$1" | sed -e 's/./&\//g' | grep '\(./\)\{128\}' | sed -e 's/..$//')"
    echo -n "$hashdir"
}

_ak_fs_verify_input_is_hash(){
    if [ ! -z "$1" ] && echo "$1" | grep '[0123456789abcdef]\{128\}' > /dev/null 2>&1
    then
        return 0
    else
        echo "no hash?!" >&2
        exit 1
    fi
}

_ak_fs_create_dir_for_hash(){
    _ak_fs_verify_input_is_hash $2
    if [ ! -z $1 ] && [ ! -z $2 ] && [ -n "$1" ] && [ -n "$2" ]
    then
        mkdir -p "$1/$(_ak_fs_return_hash_dir $2)"
    fi
}