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#nullable enable
using System;
using System.Runtime.InteropServices;
namespace IPA.Logging.Printers
{
/// <summary>
/// Prints a pretty message to the console.
/// </summary>
public class ColoredConsolePrinter : LogPrinter
{
private Logger.LogLevel filter = Logger.LogLevel.All;
/// <summary>
/// A filter for this specific printer.
/// </summary>
/// <value>the filter to apply to this printer</value>
public override Logger.LogLevel Filter { get => filter; set => filter = value; }
/// <summary>
/// The color to print messages as.
/// </summary>
/// <value>the color to print this message as</value>
// Initializer calls this function because Unity's .NET 3.5 doesn't have the color properties on Console
public ConsoleColor Color { get; set; } = GetConsoleColor(WinConsole.OutHandle);
private static ConsoleColor GetDarkenedColor(ConsoleColor color)
=> color switch
{
ConsoleColor.Gray => ConsoleColor.DarkGray,
ConsoleColor.Blue => ConsoleColor.DarkBlue,
ConsoleColor.Green => ConsoleColor.DarkGreen,
ConsoleColor.Cyan => ConsoleColor.DarkCyan,
ConsoleColor.Red => ConsoleColor.DarkRed,
ConsoleColor.Magenta => ConsoleColor.DarkMagenta,
ConsoleColor.Yellow => ConsoleColor.DarkYellow,
ConsoleColor.White => ConsoleColor.Gray,
_ => color,
};
private readonly bool darkenSetManually;
private readonly bool darkenMessages;
public ColoredConsolePrinter() : this(Config.SelfConfig.Debug_.DarkenMessages_)
{
darkenSetManually = false;
}
public ColoredConsolePrinter(bool darkenMessages)
{
darkenSetManually = true;
this.darkenMessages = darkenMessages;
}
/// <summary>
/// Prints an entry to the console window.
/// </summary>
/// <param name="level">the <see cref="Logger.Level"/> of the message</param>
/// <param name="time">the <see cref="DateTime"/> the message was recorded at</param>
/// <param name="logName">the name of the log that sent the message</param>
/// <param name="message">the message to print</param>
public override void Print(Logger.Level level, DateTime time, string logName, string message)
{
if (((byte)level & (byte)StandardLogger.PrintFilter) == 0) return;
EnsureDefaultsPopulated(WinConsole.OutHandle);
SetColor(Color, WinConsole.OutHandle);
var prefixStr = "";
if ((darkenSetManually && darkenMessages) || (!darkenSetManually && Config.SelfConfig.Debug_.DarkenMessages_))
{
prefixStr = StdoutInterceptor.ConsoleColorToForegroundSet(GetDarkenedColor(Color));
}
foreach (var line in message.Split(new[] { "\n", Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries))
WinConsole.ConOut.WriteLine(Logger.LogFormat, prefixStr + line, logName, time, level.ToString().ToUpperInvariant());
ResetColor(WinConsole.OutHandle);
}
private static bool _haveReadDefaultColors;
private static short _defaultColors;
private static void EnsureDefaultsPopulated(IntPtr handle, bool force = false)
{
if (!_haveReadDefaultColors | force)
{
_ = GetConsoleScreenBufferInfo(handle, out var info);
_defaultColors = (short)(info.Attribute & ~15);
_haveReadDefaultColors = true;
}
}
private static void ResetColor(IntPtr handle)
{
_ = GetConsoleScreenBufferInfo(handle, out var info);
var otherAttrs = (short)(info.Attribute & ~15);
_ = SetConsoleTextAttribute(handle, (short)(otherAttrs | _defaultColors));
}
private static void SetColor(ConsoleColor col, IntPtr handle)
{
_ = GetConsoleScreenBufferInfo(handle, out var info);
var attr = GetAttrForeground(info.Attribute, col);
_ = SetConsoleTextAttribute(handle, attr);
}
private static short GetAttrForeground(int attr, ConsoleColor color)
{
attr &= ~15;
return (short)(attr | (int)color);
}
private static ConsoleColor GetConsoleColor(IntPtr handle)
{
_ = GetConsoleScreenBufferInfo(handle, out var info);
return (ConsoleColor)(info.Attribute & 15);
}
// ReSharper disable NotAccessedField.Local
#pragma warning disable 649
private struct Coordinate
{
public short X;
public short Y;
}
private struct SmallRect
{
public short Left;
public short Top;
public short Right;
public short Bottom;
}
private struct ConsoleScreenBufferInfo
{
public Coordinate Size;
public Coordinate CursorPosition;
public short Attribute;
public SmallRect Window;
public Coordinate MaxWindowSize;
}
#pragma warning restore 649
// ReSharper restore NotAccessedField.Local
[DllImport("kernel32.dll", EntryPoint = "GetConsoleScreenBufferInfo", SetLastError = true, CharSet = CharSet.Unicode)]
private static extern bool GetConsoleScreenBufferInfo(IntPtr handle, out ConsoleScreenBufferInfo info);
[DllImport("kernel32.dll", EntryPoint = "SetConsoleTextAttribute", SetLastError = true, CharSet = CharSet.Unicode)]
private static extern bool SetConsoleTextAttribute(IntPtr handle, short attribute);
}
}