Fix in YAML to JSON involving boolean conversion (#579)

src/dev/impl/DevToys/DevToys.csproj

@@ -30,6 +30,7 @@
     <Compile Include="Core\OOP\AppService.cs" />
     <Compile Include="Core\QueueWorkerViewModelBase.cs" />
     <Compile Include="Core\Threading\AsyncLazy.cs" />
+    <Compile Include="Helpers\JsonYaml\Core\BooleanYamlTypeResolver.cs" />
     <Compile Include="Helpers\StorageFileHelper.cs" />
     <Compile Include="Helpers\ImageHelper.cs" />
     <Compile Include="Helpers\ColorBlindnessSimulatorHelper.cs" />

src/dev/impl/DevToys/Helpers/JsonYaml/Core/BooleanYamlTypeResolver.cs

@@ -0,0 +1,30 @@
+#nullable enable
+
+using System;
+using YamlDotNet.Core;
+using YamlDotNet.Core.Events;
+using YamlDotNet.Serialization;
+
+namespace DevToys.Helpers.JsonYaml.Core
+{
+    internal class BooleanYamlTypeResolver : INodeTypeResolver
+    {
+        public bool Resolve(NodeEvent? nodeEvent, ref Type currentType)
+        {
+            if (nodeEvent is Scalar scalar)
+            {
+                // avoid unnecessary parsing attempts
+                bool couldBeBoolean
+                    = scalar.Style is ScalarStyle.Plain
+                    && (string.Equals(scalar.Value, bool.FalseString, StringComparison.OrdinalIgnoreCase) || string.Equals(scalar.Value, bool.TrueString, StringComparison.OrdinalIgnoreCase));
+
+                if (couldBeBoolean && bool.TryParse(scalar.Value, out _))
+                {
+                    currentType = typeof(bool);
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+}

src/dev/impl/DevToys/Helpers/JsonYaml/JsonHelper.cs

@@ -146,6 +146,7 @@ internal static string Format(string? input, Indentation indentationMode, bool s
 
                 IDeserializer deserializer = new DeserializerBuilder()
                     .WithNodeTypeResolver(new DecimalYamlTypeResolver())
+                    .WithNodeTypeResolver(new BooleanYamlTypeResolver())
                     .Build();
 
                 object? yamlObject = deserializer.Deserialize(stringReader);