initial commit

Crysome.Server/Crysome.Server.Converters/FlagConverter.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using System.Windows;
+using System.Windows.Data;
+using System.Windows.Media.Imaging;
+
+namespace Crysome.Server.Converters;
+
+public class FlagConverter : IValueConverter
+{
+	private static readonly Dictionary<string, BitmapImage> Cache = new Dictionary<string, BitmapImage>(StringComparer.OrdinalIgnoreCase);
+
+	private static bool _loaded;
+
+	public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+	{
+		if (value == null)
+		{
+			return null;
+		}
+		string text = value.ToString().Trim().ToUpperInvariant();
+		if (string.IsNullOrEmpty(text))
+		{
+			return null;
+		}
+		if (!_loaded)
+		{
+			LoadAll();
+		}
+		if (Cache.TryGetValue(text, out var value2))
+		{
+			return value2;
+		}
+		return null;
+	}
+
+	public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+	{
+		return DependencyProperty.UnsetValue;
+	}
+
+	private static void LoadAll()
+	{
+		_loaded = true;
+		string baseDirectory = AppDomain.CurrentDomain.BaseDirectory;
+		string[] array = new string[2]
+		{
+			Path.Combine(baseDirectory, "flags"),
+			baseDirectory
+		};
+		foreach (string path in array)
+		{
+			if (!Directory.Exists(path))
+			{
+				continue;
+			}
+			string[] files = Directory.GetFiles(path, "*.png");
+			foreach (string text in files)
+			{
+				try
+				{
+					string text2 = Path.GetFileNameWithoutExtension(text).ToUpperInvariant();
+					if (!text2.Contains("@") && text2.Length == 2 && !Cache.ContainsKey(text2))
+					{
+						BitmapImage bitmapImage = new BitmapImage();
+						bitmapImage.BeginInit();
+						bitmapImage.UriSource = new Uri(text);
+						bitmapImage.DecodePixelHeight = 16;
+						bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
+						bitmapImage.EndInit();
+						((Freezable)bitmapImage).Freeze();
+						Cache[text2] = bitmapImage;
+					}
+				}
+				catch
+				{
+				}
+			}
+		}
+	}
+}