Include files for bash scripts

color

#!/bin/bash

# check if stdout is a terminal
if [ -t 1 ]; then
  # see if it supports colors
  ncolors=$(tput colors)

  if [[ -n "$ncolors" && $ncolors -ge 8 ]]; then
    bold="$(tput bold)"
    underline="$(tput smul)"
    standout="$(tput smso)"
    normal="$(tput sgr0)"
    black="$(tput setaf 0)"
    red="$(tput setaf 1)"
    green="$(tput setaf 2)"
    yellow="$(tput setaf 3)"
    blue="$(tput setaf 4)"
    magenta="$(tput setaf 5)"
    cyan="$(tput setaf 6)"
    white="$(tput setaf 7)"
  fi
fi

error

#!/bin/bash

# place this file within the main directory containing other bash
# scripts, or in a child directory of the main directory, and
# add the following line to those scripts:
#   source "${BASH_SOURCE%/*}/path/to/this/file"
#
# if the color script exists in the same directory as this file it will
# automatically be sourced and color output will be used
#
# Function := error
# Usage := error "This is the error reason."
# @param: <optional>
# @Stdout: "! Aborting. This is the error reason."
#
# if no parameter is sent when error is called, "No reason provided."
# will be used as the default reason reported to stdout

if [ -f "${BASH_SOURCE%/*}/color" ]; then
  source "${BASH_SOURCE%/*}/color"
fi

function error {
  reason=$1
  if [ -z "$reason" ]; then
    reason="No reason provided."
  fi

  echo -e "${bold}${red}${standout}!${normal} ${bold}${red}Aborting.${normal} ${bold}$reason${normal}" >&2
  exit 1
}