Support string enumerables in LogReplacedAttribute (#127)

Author: sungam3r

README.md

@@ -345,6 +345,8 @@ __Available properties__:
  - **Options:** The [RegexOptions](https://docs.microsoft.com/en-us/dotnet/api/system.text.regularexpressions.regexoptions?view=netcore-3.1) that will be applied. Defaults to __RegexOptions.None__.
  - **Timeout:** A time-out interval to evaluate regular expression. Defaults to __Regex.InfiniteMatchTimeout__.
 
+Note that replacement also works for properties of type `IEnumerable<string>` or derived from it, for example, `string[]` or `List<string>`.
+
 ### Examples
 
 <!-- snippet: WithRegex -->

src/Destructurama.Attributed.Tests/ReplacedAttributeTests.cs

@@ -38,6 +38,12 @@ public class CustomizedRegexLogs
     /// </summary>
     [LogReplaced("does not matter", "does not matter")]
     public int RegexReplaceForInt { get; set; }
+
+    /// <summary>
+    /// 123|456|789 results in "***|456|****"
+    /// </summary>
+    [LogReplaced(REGEX_WITH_VERTICAL_BARS, "***|$2|****")]
+    public List<string>? RegexForCollection { get; set; }
 }
 
 [TestFixture]
@@ -156,4 +162,25 @@ public void LogReplacedAttribute_Should_Work_Only_For_String_Properties()
 
         props.ContainsKey("RegexReplaceForInt").ShouldBeFalse();
     }
+
+    [Test]
+    public void LogReplacedAttribute_Should_Work_For_Collection_Of_String_Properties()
+    {
+        var customized = new CustomizedRegexLogs
+        {
+            RegexForCollection = ["123|456|789", "abc|def|ghi"]
+        };
+
+        var evt = DelegatingSink.Execute(customized);
+
+        var sv = (StructureValue)evt.Properties["Customized"];
+        var props = sv.Properties.ToDictionary(p => p.Name, p => p.Value);
+
+        props.ContainsKey("RegexForCollection").ShouldBeTrue();
+        var seq = props["RegexForCollection"].ShouldBeOfType<SequenceValue>();
+        seq.Elements.Count.ShouldBe(2);
+        seq.Elements[0].LiteralValue().ShouldBe("***|456|****");
+        seq.Elements[1].LiteralValue().ShouldBe("***|def|****");
+    }
+
 }

src/Destructurama.Attributed/Attributed/LogReplacedAttribute.cs

@@ -60,9 +60,13 @@ public bool TryCreateLogEventProperty(string name, object? value, ILogEventPrope
 
         if (value is string s)
         {
-            var replacement = Regex.Replace(s, _pattern, _replacement, Options, Timeout);
+            property = new(name, new ScalarValue(Regex.Replace(s, _pattern, _replacement, Options, Timeout)));
+            return true;
+        }
 
-            property = new(name, new ScalarValue(replacement));
+        if (value is IEnumerable<string> collection)
+        {
+            property = new(name, new SequenceValue(collection.Select(s => new ScalarValue(Regex.Replace(s, _pattern, _replacement, Options, Timeout)))));
             return true;
         }