RobustToolbox/Robust.Shared/Configuration/ConfigurationCommands.cs

using System;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using Robust.Shared.Console;

namespace Robust.Shared.Configuration
{
    [SuppressMessage("ReSharper", "StringLiteralTypo")]
    internal abstract class SharedCVarCommand : ICommand
    {
        public string Command => "cvar";
        public string Description => "Gets or sets a CVar.";

        public string Help => @"cvar <name> [value]
If a value is passed, the value is parsed and stored as the new value of the CVar.
If not, the current value of the CVar is displayed.";

        protected static object ParseObject(Type type, string input)
        {
            if (type == typeof(bool))
            {
                if(bool.TryParse(input, out var val))
                    return val;

                if (int.TryParse(input, out var intVal))
                {
                    if (intVal == 0) return false;
                    if (intVal == 1) return true;
                }

                throw new FormatException($"Could not parse bool value: {input}");
            }

            if (type == typeof(string))
            {
                return input;
            }

            if (type == typeof(int))
            {
                return int.Parse(input, CultureInfo.InvariantCulture);
            }

            if (type == typeof(float))
            {
                return float.Parse(input, CultureInfo.InvariantCulture);
            }

            throw new NotImplementedException();
        }
    }
}