#!/usr/bin/env bash
# Common functions for the lab scripts
# Copyright 2021 Bryan C. Roessler

# Don't run this script directly
[[ "${BASH_SOURCE[0]}" == "${0}" ]] && exit 0


ask_ok() {
    read -r -p "$* [y/N]" response
    response=${response,,}
    [[ ! "$response" =~ ^(yes|y)$ ]] && return 1
    return 0
}


is_root() {
    user=$(whoami)
    [[ $user != "root" ]] && echo "Script must be run with sudo rights!" && exit 1
}


if ! type -t readarray >/dev/null; then
  readarray() {
    local cmd opt t v=MAPFILE
    while [ -n "$1" ]; do
      case "$1" in
      -h|--help) echo "minimal substitute readarray for older bash"; exit; ;;
      -r) shift; opt="$opt -r"; ;;
      -t) shift; t=1; ;;
      -u) 
          shift; 
          if [ -n "$1" ]; then
            opt="$opt -u $1"; 
            shift
          fi
          ;;
      *)
          if [[ "$1" =~ ^[A-Za-z_]+$ ]]; then
            v="$1"
            shift
          else
            echo -en "${C_BOLD}${C_RED}Error: ${C_RESET}Unknown option: '$1'\n" 1>&2
            exit
          fi
          ;;
      esac
    done
    cmd="read $opt"
    eval "$v=()"
    while IFS= eval "$cmd line"; do      
      line=$(echo "$line" | sed -e "s#\([\"\`]\)#\\\\\1#g" )
      eval "${v}+=(\"$line\")"
    done
  }
fi