#!/bin/bash -e

# License for THIS FILE ONLY: CC0 Public Domain Dedication
# http://creativecommons.org/publicdomain/zero/1.0/

# Get the directory containing to the symlink target of the script.
if script=$(readlink -e "$0" 2>/dev/null) && [[ "$script" -ef "$0" ]]; then
    scriptdir=$(dirname "$script")
elif script=$(realpath "$0" 2>/dev/null) && [[ "$script" -ef "$0" ]]; then
    scriptdir=$(dirname "$script")
elif script=$(greadlink -e "$0" 2>/dev/null) && [[ "$script" -ef "$0" ]]; then
    scriptdir=$(dirname "$script")
else
    scriptdir=$(
        d=$(dirname "$0")
        b=$(basename "$0")
        cd "$d"
        if l=$(readlink "$b"); then
            ld=$(dirname "$l")
            cd "$ld"
        fi
        pwd
    )
fi

PATH="$scriptdir:$PATH"

if [[ -t 1 ]] && type -p diff-colorize >/dev/null; then
    diff -u "$@" | diff-colorize
else
    diff -u "$@"
fi