A Bash script for drawing CLI boxes

box.sh

box_width=$(tput cols)

function create_line() {
    input_width=$(($(echo "$*" | wc -c) - 1))
    if [ $# -lt 1 ]; then
	   input_width=0
    fi
    half_width=$(($(($box_width - $input_width)) / 2))
    for i in `seq 1 $half_width`; do
	   echo -n '-'
    done
    echo -n $*
    half_width=$(($box_width - $half_width - $input_width))
    for i in `seq 1 $half_width`; do
	   echo -n '-'
    done
    echo
}

function box_output() {
    echo -n '| ' "$*"
    input_length=$(echo  $* | wc -c)
    for i in `seq 1 $(($box_width - $input_length - 4))`; do
	   echo -n ' '
    done
    echo ' |'
}

function create_divider() {
    echo -n '|'
    for i in `seq 1 $(($box_width - 2))`; do
	   echo -n '-'
    done
    echo -n '|'
}