utils - Some bash Utility Functions

#!/bin/bash
help_text="
NAME
  utils - One line description.

USAGE
  utils [options] <parameters>

OPTIONS
  -x
    Description...

  -h|--help
    Show help text.

DESCRIPTION
  Description description description description.

AUTHOR
  mjnurse.dev - 2020
"
help_line="Some bash Utility Functions"
web_desc_line="Some bash Utility Functions"

colour_default="\e[39m"
colour_black="\e[30m"
colour_red="\e[31m"
colour_green="\e[32m"
colour_yellow="\e[33m"
colour_blue="\e[34m"
colour_magenta="\e[35m"
colour_cyan="\e[36m"
colour_dark_gray="\e[90m"
colour_light_gray="\e[37m"
colour_light_red="\e[91m"
colour_light_green="\e[92m"
colour_light_yellow="\e[93m"
colour_light_blue="\e[94m"
colour_light_magenta="\e[95m"
colour_light_cyan="\e[96m"
colour_white="\e[97m"

ls="${colour_white}"
le="${colour_white}"


function set_colour() {
  while [[ "$1" != "" ]]; do
    case $1 in
      -red)
        ls="${colour_red}"
        ;;
      -lred)
        ls="${colour_light_red}"
        ;;
      -default)
        ls="${colour_default}"
        ;;
      -black)
        ls="${colour_black}"
        ;;
      -red)
        ls="${colour_red}"
        ;;
      -green)
        ls="${colour_green}"
        ;;
      -yellow)
        ls="${colour_yellow}"
        ;;
      -blue)
        ls="${colour_blue}"
        ;;
      -magenta)
        ls="${colour_magenta}"
        ;;
      -cyan)
        ls="${colour_cyan}"
        ;;
      -dark_gray)
        ls="${colour_dark_gray}"
        ;;
      -light_gray|-lgray)
        ls="${colour_light_gray}"
        ;;
      -light_red|-lred)
        ls="${colour_light_red}"
        ;;
      -light_green|-lgreen)
        ls="${colour_light_green}"
        ;;
      -light_yellow|-lyellow)
        ls="${colour_light_yellow}"
        ;;
      -light_blue|-lblue)
        ls="${colour_light_blue}"
        ;;
      -light_magenta|-lmagenta)
        ls="${colour_light_magenta}"
        ;;
      -light_cyan|-lcyan)
        ls="${colour_light_cyan}"
        ;;
      -white)
        ls="${colour_white}"
        ;;
      *)
        break
        ;;
    esac
     shift
  done
}

function reset_colour() {
  ls="${colour_white}"
  le="${colour_white}"
}

# 
function echo_line() {
  if [[ "$1" == "-r" ]]; then
    shift
    str="$*"
    underline="$(echo "$str" | sed "s/./-/g")"
    echo -e "${ls}${underline}${le}"
  else
    char="${2:--}"
    echo $(printf "%0.s${char}" $(seq 1 $1))
  fi
}

function echo_h1() {
  if [[ "$1" =~ -.* ]]; then
    set_colour $1
    shift
  fi
  heading="$*"
  echo -e "${ls}${heading^^}${le}"
  echo_line -r "${heading}"
  echo ""
  reset_colour
}

function echo_h2() {
  if [[ "$1" =~ -.* ]]; then
    set_colour $1
    shift
  fi
  heading="$*"
  echo -e "${ls}${heading}${le}"
  echo_line -r "${heading}"
}