-#!/bin/bash
-# Desc: Checks if arg is an integer
-
-#==BEGIN Define script parameters==
-#===BEGIN Declare local script functions===
-yell() { echo "$0: $*" >&2; } # print script path and all args to stderr
-die() { yell "$*"; exit 111; } # same as yell() but non-zero exit status
-try() { "$@" || die "cannot $*"; } # runs args as command, reports args if command fails
-checkInt() {
- # Desc: Checks if arg is integer
- # Usage: checkInt arg
- # Input: arg: integer
- # Output: - return code 0 (if arg is integer)
- # - return code 1 (if arg is not integer)
- # Example: if ! checkInt $arg; then echo "not int"; fi;
- # Version: 0.0.1
- local returnState
-
- #===Process Arg===
- if [[ $# -ne 1 ]]; then
- die "ERROR:Invalid number of arguments:$#";
- fi;
-
- RETEST1='^[0-9]+$'; # Regular Expression to test
- if [[ ! $1 =~ $RETEST1 ]] ; then
- returnState="false";
- else
- returnState="true";
- fi;
-
- #===Determine function return code===
- if [ "$returnState" = "true" ]; then
- return 0;
- else
- return 1;
- fi;
-} # Checks if arg is integer
-
-#===END Declare local script functions===
-#==END Define script parameters==
-
-#==BEGIN test code==
-if checkInt 4; then yell "success"; fi;
-sleep 1;
-if checkInt "foo"; then yell "success"; else yell "fail"; fi;
-sleep 1;
-if checkInt "foo" "bar" "baz" 1; then yell "success"; else yell "fail"; fi;
-sleep 1;
-if checkInt; then yell "success"; else yell "fail"; fi;
-#==END test code==
-
-# Author: Steven Baltakatei Sandoval
-# License: GPLv3+