baseline: OpenMU upstream b5a0961 (fresh source)

src/ChatServer/ExDbConnector/Settings.cs

@@ -0,0 +1,121 @@
+// <copyright file="Settings.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.ChatServer.ExDbConnector;
+
+using System.Globalization;
+using System.IO;
+
+/// <summary>
+/// A class which reads settings from a file.
+/// Line Format:
+/// [Key]=[Value]
+/// Line comments can be added by starting with "#".
+/// </summary>
+internal class Settings
+{
+    private readonly IDictionary<string, string> _settingsDictionary = new Dictionary<string, string>();
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Settings"/> class.
+    /// Reads the file contents in, if the file is available.
+    /// </summary>
+    /// <param name="file">The file.</param>
+    public Settings(string file)
+    {
+        if (!File.Exists(file))
+        {
+            return;
+        }
+
+        foreach (var line in File.ReadAllLines(file))
+        {
+            var elements = line.Split('=');
+            if (elements.Length > 1
+                && !elements[0].StartsWith("#", StringComparison.InvariantCulture)
+                && !this._settingsDictionary.ContainsKey(elements[0]))
+            {
+                this._settingsDictionary.Add(elements[0], elements[1]);
+            }
+        }
+    }
+
+    /// <summary>
+    /// Gets the configured chat server listener port.
+    /// </summary>
+    public int? ChatServerListenerPort
+    {
+        get
+        {
+            if (this["ChatServerListenerPort"] != null && int.TryParse(this["ChatServerListenerPort"], out var result))
+            {
+                return result;
+            }
+
+            return default;
+        }
+    }
+
+    /// <summary>
+    /// Gets the configured exDb server port.
+    /// </summary>
+    public int? ExDbPort
+    {
+        get
+        {
+            if (this["ExDbPort"] != null)
+            {
+                if (int.TryParse(this["ExDbPort"], out int result))
+                {
+                    return result;
+                }
+
+                return default;
+            }
+
+            return null;
+        }
+    }
+
+    /// <summary>
+    /// Gets the configured exDb server host.
+    /// </summary>
+    public string? ExDbHost => this["ExDbHost"];
+
+    /// <summary>
+    /// Gets the configured xor32 key.
+    /// </summary>
+    public byte[]? Xor32Key
+    {
+        get
+        {
+            if (this["Xor32Key"] != null)
+            {
+                var customXor32KeyList = new List<byte>();
+                var keyAsString = this["Xor32Key"];
+                if (keyAsString is not null)
+                {
+                    var bytesAsString = keyAsString.Split(' ');
+                    foreach (var byteString in bytesAsString)
+                    {
+                        customXor32KeyList.Add(byte.Parse(byteString, NumberStyles.HexNumber, CultureInfo.InvariantCulture));
+                    }
+                }
+
+                return customXor32KeyList.ToArray();
+            }
+
+            return null;
+        }
+    }
+
+    private string? this[string key]
+    {
+        get
+        {
+            this._settingsDictionary.TryGetValue(key, out var value);
+            return value;
+        }
+    }
+}