public static void Main()
{
while (true)
{
string readCommand = Console.ReadLine();
if (readCommand == PhoneNumber.EndString || readCommand == null)
{
break;
}
int indexOfOpeningParenthesis = readCommand.IndexOf(OpeningParenthesisSymbol);
if (indexOfOpeningParenthesis == -1)
{
throw new IndexOutOfRangeException("Fatal error in the program!!! Index of opening parenthesisis is equal to -1.");
}
string command = readCommand.Substring(0, indexOfOpeningParenthesis);
if (!readCommand.EndsWith(PhoneNumber.ClosingParenthesis))
{
Main();
}
string stringOfCommandParameteres =
readCommand.Substring(indexOfOpeningParenthesis + 1, readCommand.Length - indexOfOpeningParenthesis - 2);
string[] commandParameters = stringOfCommandParameteres.Split(CommaSeparatorSymbol);
for (int currentIndex = 0; currentIndex < commandParameters.Length; currentIndex++)
{
commandParameters[currentIndex] = commandParameters[currentIndex].Trim();
}
if (command.StartsWith(PhoneNumber.AddPhoneString) && commandParameters.Length >= 2)
{
PhoneNumber.Command(PhoneNumber.AddPhoneString, commandParameters);
}
else if ((command == PhoneNumber.ChangePhoneString) && (commandParameters.Length == 2))
{
PhoneNumber.Command(PhoneNumber.ChangePhoneString, commandParameters);
}
else if ((command == PhoneNumber.ListString) && (commandParameters.Length == 2))
{
PhoneNumber.Command(PhoneNumber.ListString, commandParameters);
}
else
{
throw new ArgumentOutOfRangeException("Count of parameters of the command is not correct.");
}
PhoneNumber.Print(OutputMessage.ToString());
}
}