Import StringSplitExtensions (#226)

src/Tingle.Extensions.Primitives/Extensions/StringProtectionExtensions.cs

@@ -21,7 +21,7 @@ public enum StringProtectionPosition
     End,
 }
 
-/// <summary>Extension methods for <see cref="string"/>.</summary>
+/// <summary>Extension methods for <see cref="string"/> for protection.</summary>
 public static partial class StringProtectionExtensions
 {
     /// <summary>

src/Tingle.Extensions.Primitives/Extensions/StringSplitExtensions.cs

@@ -0,0 +1,23 @@
+using System.Text.RegularExpressions;
+
+namespace System;
+
+/// <summary>Extension methods for <see cref="string"/> for splitting.</summary>
+public static partial class StringSplitExtensions
+{
+    /// <summary>
+    /// Split a string in Pascal casing into multiple words by adding the specified <paramref name="separator"/>.
+    /// </summary>
+    /// <param name="source"></param>
+    /// <param name="separator"></param>
+    /// <returns></returns>
+    public static string PascalSplit(this string source, string separator = " ")
+    {
+        ArgumentNullException.ThrowIfNull(source);
+
+        return GetPascalSplitFormat().Replace(source, separator);
+    }
+
+    [GeneratedRegex(@"(?<=[A-Za-z])(?=[A-Z][a-z])|(?<=[a-z0-9])(?=[0-9]?[A-Z])")]
+    private static partial Regex GetPascalSplitFormat();
+}

tests/Tingle.Extensions.Primitives.Tests/Extensions/StringSplitExtensionsTests.cs

@@ -0,0 +1,14 @@
+namespace Tingle.Extensions.Modeling.Tests;
+
+public class StringSplitExtensionsTests
+{
+    [Theory]
+    [InlineData("HomeAndAway", " ", "Home And Away")]
+    [InlineData("HomeAndAway", "_", "Home_And_Away")]
+    [InlineData("Chickensoup", " ", "Chickensoup")]
+    public void PascalSplit_works(string original, string separator, string expected)
+    {
+        var actual = original.PascalSplit(separator);
+        Assert.Equal(expected, actual);
+    }
+}