New Commands & piped interpreter!

TermEngine/Core/CommandInterpreter.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using TermApp.Commands;
+
+
+
+namespace TermApp.Core
+{
+
+    public class CommandInterpreter
+    {
+        public readonly Dictionary<string, ICommand> _commands = new();
+
+        public CommandInterpreter()
+        {
+
+            RegisterCommand(new GreetCommand());
+            RegisterCommand(new HelpCommand(this));
+            RegisterCommand(new AddCommand());
+            RegisterCommand(new EchoCommand());
+            RegisterCommand(new ClearCommand());
+
+        }
+        public void RegisterCommand(ICommand command)
+        {
+
+            _commands[command.Name.ToLower()] = command;
+
+        }
+
+        public void Execute(string input)
+        {
+
+            string[] pipedCommands = input.Split("|", StringSplitOptions.RemoveEmptyEntries);
+            string pipedOutput = null;
+
+            foreach (var cmdInput in pipedCommands)
+            {
+
+                string trimmed = cmdInput.Trim();
+
+                string[] parts = input.Split(" ", StringSplitOptions.RemoveEmptyEntries);
+                if (parts.Length == 0) continue;
+                string commandName = parts[0].ToLower();
+                string[] args = parts.Length > 1 ? parts[1..] : new string[0];
+
+
+
+                if (_commands.TryGetValue(commandName, out var command))
+                {
+
+                    command.Execute(args);
+
+                }
+                else
+                {
+                    Console.WriteLine($"Err - uknown Command : '{commandName}'. Type help For a list of commands");
+                    return;
+                }
+
+
+            }
+
+
+            if (!string.IsNullOrWhiteSpace(pipedOutput))
+            {
+
+                Console.WriteLine(pipedOutput);
+
+            }
+
+        }
+
+
+
+
+
+
+
+        public IEnumerable<ICommand> GetAllCommands()
+        {
+
+            return _commands.Values;
+
+        }
+
+
+    }
+}
+