static void Main(string[] args)
{
while (true)
{
var newCalc = new CalculatePostfix();
Console.WriteLine("Please choose the mode \n " +
"c - input from console \n " +
"f - input from the file \n " +
"e - exit");
string mode;
do
{
mode = Console.ReadLine();
if (string.IsNullOrEmpty(mode))
{
Console.WriteLine("Empty input, please try again");
}
} while (string.IsNullOrEmpty(mode));
if (mode == "c")
{
Console.WriteLine("Please enter an expression:");
while (true)
{
string inputStr;
do
{
inputStr = Console.ReadLine();
if (string.IsNullOrEmpty(inputStr))
{
Console.WriteLine("Empty input, please try again");
}
} while (string.IsNullOrEmpty(inputStr));
var stringToPostfix = newCalc.GetExpression(inputStr);
if (stringToPostfix == null)
{
Console.WriteLine("Invalid Input! Please enter an expression without letters!");
}
else
{
var calcString = newCalc.Counting(stringToPostfix);
Console.WriteLine(calcString);
}
}
}
else if (mode == "f")
{
Console.WriteLine("Please enter a path to the source file");
string inputStr;
do
{
inputStr = Console.ReadLine();
if (string.IsNullOrEmpty(inputStr))
{
Console.WriteLine("Empty input, please try again");
}
} while (string.IsNullOrEmpty(inputStr));
List <string> filePath = File.ReadAllLines(inputStr).ToList();
List <string> output = new List <string>();
foreach (var item in filePath)
{
var stringToPostfix = newCalc.GetExpression(item);
if (stringToPostfix == null)
{
output.Add("Invalid Input!");
}
else
{
var calcString = newCalc.Counting(stringToPostfix);
string resultToStr = calcString.ToString();
output.Add(resultToStr);
}
}
Console.WriteLine("Please enter a path for the result file");
string path = Console.ReadLine();
var newList = filePath.Join(output, s => filePath.IndexOf(s), i => output.IndexOf(i), (s, i) => new { sv = s, iv = i }).ToList();
using (TextWriter tw = new StreamWriter(path))
{
foreach (var item in newList)
{
tw.WriteLine(string.Format("{0} = {1}", item.sv, item.iv));
}
}
Console.WriteLine("Result has been successfully added to the file!");
}
else if (mode == "e")
{
break;
}
else
{
Console.WriteLine("Invalid input, please select one of the options provided!");
}
}
}
