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