#!/bin/bash

# formatdir--Outputs a directory listing in a friendly and useful formatdir

# Note that you need to ensure "scriptbc" (Script #9) is in your current path
# because it's invoked within the script more than once.

scriptbc=$(which scriptbc)

# Function to format sizes in KB to KB, MB, or GB for more readable output

readablesize()
{
    if [ $1 -ge 1048576 ] ; then
        echo "$($scriptbc -p 2 $1 / 1048576)GB"
    elif [ $1 -ge 1024 ] ; then
        echo "$($scriptbc -p 2 $1 / 1024)MB"
    else
        echo "${1}KB"
    fi
}

################
## MAIN CODE

if [ $# -gt 1 ] ; then
    echo "Usage: $0 [dirname]" >&2
    exit 1
elif [ $# -eq 1 ] ; then # Specified a directory other than the current one?
    cd "$@" # Then let's change to that one.
    if [ $? -ne 0 ] ; then # Or quit if the directory doesn't exist.
        exit 1
    fi
fi

for file in *
do
    if [ -d "$file" ] ; then
        size=$(ls "$file" | wc -l | sed 's/[^[:digit:]]//g')
        if [ $size -eq 1 ] ; then
            echo "$file ($size entry)|"
        else
            echo "$file ($size entries)|"
        fi
    else
        size="$(ls -sk "$file" | awk '{print $1}')"
        echo "$file ($(readablesize $size))"
    fi
done | \
    sed 's/ /^^^/g'  | \
    xargs -n 2
    sed 's/\^\^\^/ /g' | \
    awk -F\| '{ printf "%-39s %-39s\n", $1, $2 }'

exit 0