75 lines
3.0 KiB
C#
75 lines
3.0 KiB
C#
using System.Text;
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namespace Server;
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public static class CommandHandler {
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public delegate Response Handler(string[] args);
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public static Dictionary<string, Handler> Handlers = new Dictionary<string, Handler>();
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static CommandHandler() {
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RegisterCommand("help", _ => $"Valid commands: {string.Join(", ", Handlers.Keys)}");
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}
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public static void RegisterCommand(string name, Handler handler) {
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Handlers[name] = handler;
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}
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public static void RegisterCommandAliases(Handler handler, params string[] names) {
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foreach (string name in names) {
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Handlers.Add(name, handler);
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}
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}
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/// <summary>
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/// Modified by <b>TheUbMunster</b>
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/// </summary>
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public static Response GetResult(string input)
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{
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try {
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string[] args = input.Split(' ');
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if (args.Length == 0) return "No command entered, see help command for valid commands";
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//this part is to allow single arguments that contain spaces (since the game seems to be able to handle usernames with spaces, we need to as well)
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List<string> newArgs = new List<string>();
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newArgs.Add(args[0]);
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for (int i = 1; i < args.Length; i++) {
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if (args[i].Length == 0) continue; //empty string (>1 whitespace between arguments).
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else if (args[i][0] == '\"') {
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//concatenate args until a string ends with a quote
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StringBuilder sb = new StringBuilder();
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i--; //fix off-by-one issue
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do
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{
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i++;
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sb.Append(args[i] + " "); //add space back removed by the string.Split(' ')
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if (i >= args.Length) {
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return "Unmatching quotes, make sure that whenever quotes are used, another quote is present to close it (no action was performed).";
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}
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} while (args[i][^1] != '\"');
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newArgs.Add(sb.ToString(1, sb.Length - 3)); //remove quotes and extra space at the end.
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}
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else
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{
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newArgs.Add(args[i]);
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}
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}
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args = newArgs.ToArray();
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string commandName = args[0];
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return Handlers.TryGetValue(commandName, out Handler? handler) ? handler(args[1..]) : $"Invalid command {args[0]}, see help command for valid commands";
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}
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catch (Exception e) {
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return $"An error occured while trying to process your command: {e}";
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}
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}
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public class Response {
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public string[] ReturnStrings = null!;
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private Response(){}
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public static implicit operator Response(string value) => new Response {
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ReturnStrings = value.Split('\n')
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};
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public static implicit operator Response(string[] values) => new Response {
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ReturnStrings = values
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};
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}
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} |