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225 lines
7.1 KiB
225 lines
7.1 KiB
using IPA.Config;
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using IPA.Logging.Printers;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Threading;
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namespace IPA.Logging
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{
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/// <summary>
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/// The default <see cref="Logger"/> implementation.
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/// </summary>
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public class StandardLogger : Logger
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{
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private static readonly IReadOnlyList<LogPrinter> defaultPrinters = new List<LogPrinter>()
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{
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new ColoredConsolePrinter()
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{
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Filter = LogLevel.DebugOnly,
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Color = ConsoleColor.Green,
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},
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new ColoredConsolePrinter()
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{
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Filter = LogLevel.InfoOnly,
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Color = ConsoleColor.White,
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},
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new ColoredConsolePrinter()
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{
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Filter = LogLevel.WarningOnly,
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Color = ConsoleColor.Yellow,
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},
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new ColoredConsolePrinter()
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{
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Filter = LogLevel.ErrorOnly,
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Color = ConsoleColor.Red,
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},
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new ColoredConsolePrinter()
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{
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Filter = LogLevel.CriticalOnly,
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Color = ConsoleColor.Magenta,
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},
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new GlobalLogFilePrinter()
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};
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private readonly string logName;
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private static readonly bool showSourceClass;
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/// <summary>
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/// All levels defined by this filter will be sent to loggers. All others will be ignored.
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/// </summary>
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public static LogLevel PrintFilter { get; set; }
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private List<LogPrinter> printers = new List<LogPrinter>(defaultPrinters);
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private Dictionary<string, StandardLogger> children = new Dictionary<string, StandardLogger>();
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static StandardLogger()
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{
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showSourceClass = ModPrefs.GetBool("IPA", "DebugShowCallSource", false, true);
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PrintFilter = ModPrefs.GetBool("IPA", "PrintDebug", false, true) ? LogLevel.All : LogLevel.InfoUp;
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}
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private StandardLogger(string mainName, string subName, params LogPrinter[] inherited)
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{
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logName = $"{mainName}/{subName}";
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printers = new List<LogPrinter>(inherited)
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{
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new PluginSubLogPrinter(mainName, subName)
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};
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if (_logThread == null || !_logThread.IsAlive)
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{
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_logThread = new Thread(LogThread);
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_logThread.Start();
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}
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}
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internal StandardLogger(string name)
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{
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logName = name;
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printers.Add(new PluginLogFilePrinter(name));
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if (_logThread == null || !_logThread.IsAlive)
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{
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_logThread = new Thread(LogThread);
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_logThread.Start();
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}
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}
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internal StandardLogger GetChild(string name)
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{
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if (!children.TryGetValue(name, out StandardLogger chld))
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{
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chld = new StandardLogger(logName, name, printers.ToArray());
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children.Add(name, chld);
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}
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return chld;
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}
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/// <summary>
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/// Adds a log printer to the logger.
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/// </summary>
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/// <param name="printer">the printer to add</param>
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public void AddPrinter(LogPrinter printer)
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{
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printers.Add(printer);
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}
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/// <summary>
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/// Logs a specific message at a given level.
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/// </summary>
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/// <param name="level">the message level</param>
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/// <param name="message">the message to log</param>
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public override void Log(Level level, string message)
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{
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_logQueue.Add(new LogMessage
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{
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Level = level,
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Message = message,
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Logger = this,
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Time = DateTime.Now
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});
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}
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/// <inheritdoc />
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/// <summary>
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/// An override to <see cref="M:IPA.Logging.Logger.Debug(System.String)" /> which shows the method that called it.
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/// </summary>
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/// <param name="message">the message to log</param>
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public override void Debug(string message)
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{
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// add source to message
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var stackFrame = new StackTrace().GetFrame(1).GetMethod();
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base.Debug(showSourceClass
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? $"{{{stackFrame.DeclaringType?.FullName}::{stackFrame.Name}}} {message}"
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: message);
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}
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private struct LogMessage
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{
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public Level Level;
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public StandardLogger Logger;
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public string Message;
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public DateTime Time;
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}
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private static BlockingCollection<LogMessage> _logQueue = new BlockingCollection<LogMessage>();
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private static Thread _logThread;
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private static void LogThread()
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{
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HashSet<LogPrinter> started = new HashSet<LogPrinter>();
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while (_logQueue.TryTake(out LogMessage msg, Timeout.Infinite)) {
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foreach (var printer in msg.Logger.printers)
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{
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try
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{
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if (((byte)msg.Level & (byte)printer.Filter) != 0)
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{
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if (!started.Contains(printer))
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{
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printer.StartPrint();
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started.Add(printer);
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}
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printer.Print(msg.Level, msg.Time, msg.Logger.logName, msg.Message);
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}
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}
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catch (Exception e)
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{
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Console.WriteLine($"printer errored {e}");
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}
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}
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if (_logQueue.Count == 0)
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{
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foreach (var printer in started)
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{
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try
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{
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printer.EndPrint();
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}
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catch (Exception e)
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{
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Console.WriteLine($"printer errored {e}");
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}
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}
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started.Clear();
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}
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}
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}
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internal static void StopLogThread()
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{
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_logQueue.CompleteAdding();
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_logThread.Join();
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}
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}
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/// <summary>
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/// A class providing extensions for various loggers.
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/// </summary>
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public static class LoggerExtensions
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{
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/// <summary>
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/// Gets a child logger, if supported.
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/// </summary>
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/// <param name="logger">the parent <see cref="Logger"/></param>
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/// <param name="name">the name of the child</param>
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/// <returns>the child logger</returns>
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public static Logger GetChildLogger(this Logger logger, string name)
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{
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if (logger is StandardLogger)
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{
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return (logger as StandardLogger).GetChild(name);
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}
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else
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{
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throw new InvalidOperationException();
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}
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}
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}
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}
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