Open file name in CLI app passed as -input argument in Swift 5.x

CLI_open_file_passed_as_argument.swift

if(CommandLine.arguments.count >= 1) {
for argument in CommandLine.arguments {
		if argument.contains("-input") {
			let fileInput = CommandLine.arguments.firstIndex(of: "-input")
			let fileName = CommandLine.arguments[fileInput! + 1]
			// print(fileName)
			// do something with fileName here 
		}
}