bepin/BepInEx/ConsoleUtil/SafeConsole.cs

// --------------------------------------------------
// UnityInjector - SafeConsole.cs
// Copyright (c) Usagirei 2015 - 2015
// --------------------------------------------------

using System;
using System.Reflection;

namespace UnityInjector.ConsoleUtil
{
    public static class SafeConsole
    {
        private static GetColorDelegate _getBackgroundColor;
        private static GetColorDelegate _getForegroundColor;
        private static SetColorDelegate _setBackgroundColor;
        private static SetColorDelegate _setForegroundColor;

        public static ConsoleColor BackgroundColor
        {
            get { return _getBackgroundColor(); }
            set { _setBackgroundColor(value); }
        }

        public static ConsoleColor ForegroundColor
        {
            get { return _getForegroundColor(); }
            set { _setForegroundColor(value); }
        }

        static SafeConsole()
        {
            var tConsole = typeof(Console);
            InitColors(tConsole);
        }

        private static void InitColors(Type tConsole)
        {
            const BindingFlags BINDING_FLAGS = BindingFlags.Public | BindingFlags.Static;

            var sfc = tConsole.GetMethod("set_ForegroundColor", BINDING_FLAGS);
            var sbc = tConsole.GetMethod("set_BackgroundColor", BINDING_FLAGS);
            var gfc = tConsole.GetMethod("get_ForegroundColor", BINDING_FLAGS);
            var gbc = tConsole.GetMethod("get_BackgroundColor", BINDING_FLAGS);

            _setForegroundColor = sfc != null
                                      ? (SetColorDelegate) Delegate.CreateDelegate(typeof(SetColorDelegate), sfc)
                                      : (value => {});

            _setBackgroundColor = sbc != null
                                      ? (SetColorDelegate) Delegate.CreateDelegate(typeof(SetColorDelegate), sbc)
                                      : (value => {});

            _getForegroundColor = gfc != null
                                      ? (GetColorDelegate) Delegate.CreateDelegate(typeof(GetColorDelegate), gfc)
                                      : (() => ConsoleColor.Gray);

            _getBackgroundColor = gbc != null
                                      ? (GetColorDelegate) Delegate.CreateDelegate(typeof(GetColorDelegate), gbc)
                                      : (() => ConsoleColor.Black);
        }

        private delegate ConsoleColor GetColorDelegate();

        private delegate void SetColorDelegate(ConsoleColor value);
    }
}