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using System;
using System.Collections.Generic;
using System.Linq;
using StardewModdingAPI.Events;
using StardewModdingAPI.Framework;
namespace StardewModdingAPI
{
/// <summary>A command that can be submitted through the SMAPI console to interact with SMAPI.</summary>
public class Command
{
/*********
** Properties
*********/
/****
** SMAPI
****/
/// <summary>The commands registered with SMAPI.</summary>
internal static List<Command> RegisteredCommands = new List<Command>();
/// <summary>The event raised when this command is submitted through the console.</summary>
public event EventHandler<EventArgsCommand> CommandFired;
/****
** Command
****/
/// <summary>The name of the command.</summary>
public string CommandName;
/// <summary>A human-readable description of what the command does.</summary>
public string CommandDesc;
/// <summary>A human-readable list of accepted arguments.</summary>
public string[] CommandArgs;
/// <summary>The actual submitted argument values.</summary>
public string[] CalledArgs;
/*********
** Public methods
*********/
/****
** Command
****/
/// <summary>Construct an instance.</summary>
/// <param name="name">The name of the command.</param>
/// <param name="description">A human-readable description of what the command does.</param>
/// <param name="args">A human-readable list of accepted arguments.</param>
public Command(string name, string description, string[] args = null)
{
this.CommandName = name;
this.CommandDesc = description;
if (args == null)
args = new string[0];
this.CommandArgs = args;
}
/// <summary>Trigger this command.</summary>
public void Fire()
{
if (this.CommandFired == null)
throw new InvalidOperationException($"Can't run command '{this.CommandName}' because it has no registered handler.");
this.CommandFired.Invoke(this, new EventArgsCommand(this));
}
/****
** SMAPI
****/
/// <summary>Parse a command string and invoke it if valid.</summary>
/// <param name="input">The command to run, including the command name and any arguments.</param>
/// <param name="monitor">Encapsulates monitoring and logging.</param>
public static void CallCommand(string input, IMonitor monitor)
{
// normalise input
input = input?.Trim();
if (string.IsNullOrWhiteSpace(input))
return;
// tokenise input
string[] args = input.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
string commandName = args[0];
args = args.Skip(1).ToArray();
// get command
Command command = Command.FindCommand(commandName);
if (command == null)
{
monitor.Log("Unknown command", LogLevel.Error);
return;
}
// fire command
command.CalledArgs = args;
command.Fire();
}
/// <summary>Register a command with SMAPI.</summary>
/// <param name="name">The name of the command.</param>
/// <param name="description">A human-readable description of what the command does.</param>
/// <param name="args">A human-readable list of accepted arguments.</param>
public static Command RegisterCommand(string name, string description, string[] args = null)
{
var command = new Command(name, description, args);
if (Command.RegisteredCommands.Contains(command))
throw new InvalidOperationException($"The '{command.CommandName}' command is already registered!");
Command.RegisteredCommands.Add(command);
return command;
}
/// <summary>Find a command with the given name.</summary>
/// <param name="name">The command name to find.</param>
public static Command FindCommand(string name)
{
return Command.RegisteredCommands.Find(x => x.CommandName.Equals(name));
}
}
}
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