static void Main(string[] args)
{
if (args.Length > 0)
{
var formatter = new InputFormatter();
var calc = new Calculator();
var inputString = string.Empty;
var customDelim = string.Empty;
for (var i = 0; i < args.Length; i++)
{
if ("+-/*".Contains(args[i]))
{
calc.Operation = args[i][0];
}
else if (args[i].StartsWith("-"))
{
try
{
switch (args[i])
{
case "-d":
customDelim = Regex.Escape(args[i + 1]);
Console.WriteLine($"Custom delimiter: {args[i + 1]}");
break;
case "-n":
calc.AllowNegative = Boolean.Parse(args[i + 1]);
Console.WriteLine($"Allow negative numbers: {args[i + 1]}");
break;
case "-u":
calc.MaxValue = Int32.Parse(args[i + 1]);
Console.WriteLine($"Upper limit: {args[i + 1]}");
break;
}
}
catch (Exception)
{
throw new InvalidOptionException();
}
}
else
{
inputString = GetOrCreateInputStringFromArgs(args[i], customDelim);
}
}
ProcessInput(inputString, formatter, calc);
}
}
public static void ProcessInput(string inputString, InputFormatter formatter, Calculator calc)
{
while (!string.IsNullOrWhiteSpace(inputString))
{
var nums = formatter.GetNumListFromString(inputString);
calc.ParseList(nums);
Console.WriteLine($"Formula: {calc.GetFormula()}");
Console.WriteLine($"Result: {calc.GetResult()}");
Console.WriteLine("Enter another list or Ctrl+C to exit:");
inputString = Console.ReadLine();
}
}
