Source code for asc.cs

using System;

namespace RobvanderWoude

{

	class Asc

	{

		static readonly string progver = "1.02";

		static int Main( string[] args )

		{

			if ( args.Length != 1 || ( args.Length == 1 && args[0] == "/?" ) || ( args.Length == 1 && Console.IsInputRedirected ) )

			{

				return ShowHelp( string.Empty );

			}

			string input;

			if ( Console.IsInputRedirected )

			{

				input = Console.In.ReadToEnd( ).Substring( 0, 1 );

			}

			else

			{

				input = args[0].Substring( 0, 1 );

			}

			try

			{

				int result = Convert.ToInt32( Convert.ToByte( Convert.ToChar( input ) ) );

				Console.WriteLine( "{0}", result );

				return result;

			}

			catch ( Exception e )

			{

				return ShowHelp( e.Message );

			}

		}

		public static int ShowHelp( string errorMessage = "" )

		{

			/*

			Asc,  Version 1.02

			Return the decimal character code for the specified ASCII character

			Usage:  ASC  character

			   or:  some_program | ASC

			Where:  character      ASCII character

			        some_program   program generating an ASCII charachter

			Notes:  Only the first character is processed, any characters

			        following the first one will be ignored.

			        The result will be displayed on screen and returned as exit

			        code ("errorlevel"); in case of errors, exit code will be 0.

			        This version of ASC requires .NET framework 4.5.

			Written by Rob van der Woude

			https://www.robvanderwoude.com

			*/

			if ( !string.IsNullOrWhiteSpace( errorMessage ) )

			{

				Console.Error.WriteLine( );

				Console.ForegroundColor = ConsoleColor.Red;

				Console.Error.Write( "ERROR: " );

				Console.ForegroundColor = ConsoleColor.White;

				Console.Error.WriteLine( errorMessage );

				Console.ResetColor( );

			}

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "Asc,  Version {0}", progver );

			Console.Error.WriteLine( "Return the decimal character code for the specified ASCII character" );

			Console.Error.WriteLine( );

			Console.Error.Write( "Usage:  " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.WriteLine( "ASC  character" );

			Console.ResetColor( );

			Console.Error.WriteLine( );

			Console.Error.Write( "   or:  " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.WriteLine( "some_program | ASC" );

			Console.ResetColor( );

			Console.Error.WriteLine( );

			Console.Error.Write( "Where:  " );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "character" );

			Console.ResetColor( );

			Console.Error.WriteLine( "      ASCII character" );

			Console.ForegroundColor = ConsoleColor.White;

			Console.Error.Write( "        some_program" );

			Console.ResetColor( );

			Console.Error.WriteLine( "   program generating an ASCII charachter" );

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "Notes:  Only the first character is processed, any characters" );

			Console.Error.WriteLine( "        following the first one will be ignored." );

			Console.Error.WriteLine( "        The result will be displayed on screen and returned as exit" );

			Console.Error.WriteLine( "        code (\"errorlevel\"); in case of errors, exit code will be 0." );

			Console.Error.WriteLine( "        This version of ASC requires .NET framework 4.5." );

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "Written by Rob van der Woude" );

			Console.Error.WriteLine( "https://www.robvanderwoude.com" );

			return 0;

		}

	}

}