/// <summary>
/// Gets a valid file with valid contents from the user
/// </summary>
/// <param name="outputPrinter">Instance of the printer class</param>
/// <returns>List of integers from entered file</returns>
private static List <int> GetValidFileContentsFromUser(OutputPrinter outputPrinter)
{
var inputReader = new InputReader();
var fileReader = new ReadFile();
var validFile = false;
var inputList = new List <int>();
while (!validFile)
{
try
{
var file = inputReader.GetUserInput("Please input a file to parse. Type exit to exit program");
if (file.ToLower().Equals("exit"))
{
ExitProgram(outputPrinter);
}
inputList = fileReader.ParseFile(file);
validFile = true;
}
catch (FileNotFoundException)
{
outputPrinter.PrintLines("The file does not exist. Please try again");
}
catch (FormatException)
{
outputPrinter.PrintLines("The file contains contents that are not integers.");
}
}
return(inputList);
}
/// <summary>
/// Main runner for the program
/// </summary>
/// <param name="args"><param>
public static void Main(string[] args)
{
var printer = new OutputPrinter();
var calculator = new PrimeFactorCalculator();
var inputList = GetValidFileContentsFromUser(printer);
printer.PrintLines("Prime factors for each number are:");
foreach (var input in inputList)
{
printer.PrintLines($"{input}: " + string.Join(",", calculator.GetPrimeFactors(input)));
}
ExitProgram(printer);
}
/// <summary>
/// Exits the program when the user is done
/// </summary>
/// <param name="printer">Instance of the printer clas</param>
private static void ExitProgram(OutputPrinter printer)
{
printer.PrintLines("Program is done. Press Enter to exit");
Console.ReadLine();
Environment.Exit(0);
}
/// <summary>
/// Print a prompt out and read user's input
/// </summary>
/// <param name="prompt">String to print out to user</param>
/// <returns>User's entered input</returns>
public string GetUserInput(string prompt)
{
print.PrintLines(prompt);
return(Console.ReadLine());
}