private static void Main(string[] args)
{
try
{
var workMode = new ArgumentsParser().Parse(args);
var transformer = new EquationTransformer();
if (workMode == ApplicationWorkMode.File)
{
MakeEquationCanonicalFromFile(args, transformer);
return;
}
MakeEquationCanonicalFromConsole(transformer);
}
catch (ArgumentException exception)
{
Console.WriteLine("Error occurred in command line arguments: {0}", exception);
}
catch (FileNotFoundException exception)
{
Console.WriteLine("Input file was not found: {0}", exception);
}
catch (Exception exception)
{
Console.WriteLine("Unexpected error occured: {0}", exception);
}
}
private static void MakeEquationCanonicalFromConsole(EquationTransformer transformer)
{
while (true)
{
Console.WriteLine("Input equation");
var equation = Console.ReadLine();
if (equation == null)
{
return;
}
var canonicalEquation = transformer.MakeCanonical(equation);
Console.WriteLine(canonicalEquation);
}
}
private static void MakeEquationCanonicalFromFile(string[] args, EquationTransformer transformer)
{
if (!File.Exists(args[1]))
{
throw new FileNotFoundException();
}
var outputFileName = $"{args[1]}.out";
var equations = File.ReadAllLines(args[1]);
using (var outputStream = new StreamWriter(outputFileName))
{
foreach (var equation in equations)
{
var canonicalEquation = transformer.MakeCanonical(equation);
outputStream.WriteLine(canonicalEquation);
}
}
Console.WriteLine("Equations were successfully processed and written into {0}", outputFileName);
}
