#!/usr/bin/env bash 

set -eu

synopsis() {
	cat << EOF
Usage : `basename $0` var value
EOF
}

help() {
	cat << EOF

`basename $0` fixe la variable dans ~/.vdnrc.

`synopsis`

-h	: affiche cette aide

EOF
}

usage() {
	synopsis
	exit 1
}

args() {
	local opt
	while getopts "hr" opt; do
		case $opt in
			h) help; exit 0;;
			?) usage;;
		esac
	done
	shift $(($OPTIND - 1))

	[ $# != 2 ] && usage

	VAR=$1
	VALUE=$2

}


# Programme principal

VDN_PATH=$(readlink -f $(dirname $0)/..); . $VDN_PATH/bin/functions.sh

args "$@"

f=$HOME/.vdnrc

[ ! -e $f ] && touch $f

if cat $f | grep -q "^$VAR="; then
	sed -i -re "s,$VAR=.*$,$VAR=\"$VALUE\"," $f || echo "Error"
else
	echo "$VAR=\"$VALUE\"" >> $f
fi