Bash function to vertically/horizontally center text

center_func.sh

#!/bin/bash

##
# Horizontaly centers a line of text
#
# @method hcenter
# @param string $text - splat of text
#
##
function hcenter {

  text=$@

  cols=`tput cols`

  IFS=$'\n'$'\r'
  for line in $(echo -e $text); do

    line_length=`echo $line | sed -r "s/\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]//g" | wc -c`
    half_of_line_length=`expr $line_length / 2`
    is_odd=`expr $line_length % 2 == 1`
    half_of_line_length=`expr $half_of_line_length + $is_odd`
    center=`expr \( $cols / 2 \) - $half_of_line_length`

    spaces=""
    for ((i=0; i < $center; i++)) {
      spaces+=" "
    }

    echo "$spaces$line"

  done

}

##
# Vertically centers a line of text
#
# @method vcenter
# @param string $text - splat of text
#
##
function vcenter {

  text=$@

  rows=`tput lines`

  text_length=`echo -e $text | wc -l`
  half_of_text_length=`expr $text_length / 2`

  center=`expr \( $rows / 2 \) - $half_of_text_length`

  lines=""

  for ((i=0; i < $center; i++)) {
    lines+="\n"
  }

  echo -e "$lines$text$lines"
}

##
# Horizontally and Verticallly centers a line of text
#
# @method center
# @param string $text - splat of text
#
##
function center {
  text=$@
  vcenter "`hcenter $text`"
}

example.sh

#!/bin/bash

source center_func.sh

center "oh\n yea\n dude\n this\n is\n crazy\n and\n this\n is\n crazier"

how can i pass output of figlet command .
BTW very nice script.

how can i pass output of figlet command . BTW very nice script.

figlet probably won't work as intended - but something like this may work

$ hcenter `figlet -c cowsay test`

It's been a very long time since I worked with these fucntions