baseline: OpenMU upstream b5a0961 (fresh source)

src/Network/NumberConversionExtensions.cs

@@ -0,0 +1,88 @@
+// <copyright file="NumberConversionExtensions.cs" company="MUnique">
+// Licensed under the MIT License. See LICENSE file in the project root for full license information.
+// </copyright>
+
+namespace MUnique.OpenMU.Network;
+
+/// <summary>
+/// Number conversion extensions.
+/// </summary>
+public static class NumberConversionExtensions
+{
+    /// <summary>
+    /// Converts 4 bytes to an 32bit unsigned Integer.
+    /// </summary>
+    /// <param name="lowest">The lowest.</param>
+    /// <param name="lower">The lower.</param>
+    /// <param name="higher">The higher.</param>
+    /// <param name="highest">The highest.</param>
+    /// <returns>
+    /// The unsigned integer.
+    /// </returns>
+    public static uint MakeDword(byte lowest, byte lower, byte higher, byte highest)
+    {
+        return (uint)(MakeWord(lowest, lower) + (MakeWord(higher, highest) << 0x10));
+    }
+
+    /// <summary>
+    /// Converts 2 bytes to one 16bit unsigned short.
+    /// </summary>
+    /// <param name="lowByte">The low byte.</param>
+    /// <param name="highByte">The high byte.</param>
+    /// <returns>The unsigned short.</returns>
+    public static ushort MakeWord(byte lowByte, byte highByte)
+    {
+        return (ushort)(lowByte + ((highByte << 8) & 0xFF00));
+    }
+
+    /// <summary>
+    /// Gets the high byte.
+    /// </summary>
+    /// <param name="value">The value.</param>
+    /// <returns>The high byte.</returns>
+    public static byte GetHighByte(this ushort value)
+    {
+        return (byte)(value >> 8 & 0xFF);
+    }
+
+    /// <summary>
+    /// Gets the low byte.
+    /// </summary>
+    /// <param name="value">The value.</param>
+    /// <returns>The low byte.</returns>
+    public static byte GetLowByte(this ushort value)
+    {
+        return (byte)(value & 0xFF);
+    }
+
+    /// <summary>
+    /// Converts the signed short to an unsigned short.
+    /// </summary>
+    /// <param name="value">The signed value.</param>
+    /// <returns>The unsigned value.</returns>
+    public static ushort ToUnsigned(this short value)
+    {
+        return unchecked((ushort)value);
+    }
+
+    /// <summary>
+    /// Converts the unsigned short to a signed short.
+    /// </summary>
+    /// <param name="value">The usigned value.</param>
+    /// <returns>The signed value.</returns>
+    public static short ToSigned(this ushort value)
+    {
+        return unchecked((short)value);
+    }
+
+    /// <summary>
+    /// Gets the byte of an integer at a specific index position.
+    /// </summary>
+    /// <param name="value">The value.</param>
+    /// <param name="index">The index.</param>
+    /// <returns>The byte of the integer at the specific index position.</returns>
+    public static byte GetByte(this uint value, int index)
+    {
+        return (byte)((value >> (8 * index)) & 0xFF);
+    }
+}