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98 lines
2.2 KiB
98 lines
2.2 KiB
2 years ago
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#!/bin/bash
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# Author: Nils Gerstner
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# Last revision: 15 nov 2022 18:00
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# Version: v0.1
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# Description:
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#=== VARIABLES ================================================================#
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declare -r SCRIPT_NAME=$(basename "$BASH_SOURCE" .sh)
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declare -r HELP_MSG="Usage: $SCRIPT_NAME [OPTION]... [ARG]...
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-h display this help and exit
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"
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#=== FUNCTIONS ================================================================#
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## Print colored messages
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_cmsg() {
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case "$1" in
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black) COLOR="\033[0;30m" ;;
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white) COLOR="\033[1;37m" ;;
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grey) COLOR="\033[1;30m" ;;
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lgrey) COLOR="\033[0;37m" ;;
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red) COLOR="\033[0;31m" ;;
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lred) COLOR="\033[1;31m" ;;
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green) COLOR="\033[0;32m" ;;
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lgreen) COLOR="\033[1;32m" ;;
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brown) COLOR="\033[0;33m" ;;
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yelow) COLOR="\033[1;33m" ;;
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blue) COLOR="\033[0;34m" ;;
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lblue) COLOR="\033[1;34m" ;;
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purple) COLOR="\033[0;35m" ;;
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lpurple) COLOR="\033[1;35m" ;;
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cyan) COLOR="\033[0;36m" ;;
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lcyan) COLOR="\033[1;36m" ;;
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nocolor) COLOR="\033[0m" ;;
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esac
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printf "${COLOR}${2}\33[0m\n"
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}
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## exit the shell(default status code: 1) after printing the message to stderr
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_bail() {
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echo -ne "$1" >&2
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exit ${2-1}
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}
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## print the usage and exit the shell(default status code: 2)
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_usage() {
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local status=2
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if [[ "$1" =~ ^[0-9]+$ ]]; then
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status=$1
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shift
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fi
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_bail "${1}$HELP_MSG" $status
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}
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_failure() {
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local lineno=$1
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local msg=$2
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echo "Failed at $lineno: $msg"
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}
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#=== SET ENVIRONMENT AND EXIT CONDITIONS ======================================#
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# -e Exit immediately on error
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# -E ERR trap is inherited by shell functions
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set -eE -o functrace
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trap '_failure ${LINENO} "$BASH_COMMAND"' ERR
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#=== HANDLE ARGUMENTS =========================================================#
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while getopts ":hie:" opt; do
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case $opt in
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i)
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# Do something
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#(for ex. execute a function or set a switch variable)
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;;
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e)
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# Option with argument
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e_argument=${OPTARG}
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;;
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h)
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_usage 0
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;;
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\?)
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_usage "Invalid option: -$OPTARG \n"
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;;
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esac
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done
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shift $OPTIND
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[[ "$#" -lt 1 ]] && usage "Too few arguments\n"
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#=== MAIN CODE BELOW ==========================================================#
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echo "Start!"
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