Add ability to overwrite templates multiple times using templateFolder

src/NJsonSchema.CodeGeneration.Tests/NJsonSchema.CodeGeneration.Tests.csproj

@@ -29,6 +29,7 @@
 
     <ItemGroup>
         <None Update="Templates\*.liquid" CopyToOutputDirectory="PreserveNewest" />
+        <None Update="Templates2\*.liquid" CopyToOutputDirectory="PreserveNewest" />
     </ItemGroup>
 
 </Project>

src/NJsonSchema.CodeGeneration.Tests/TemplateFactoryTests.cs

@@ -25,4 +25,35 @@ public void Can_customize_liquid_parser()
 
         Assert.Equal("WELCOME TO THE LIQUID TAG", templateResult);
     }
+
+    [Theory]
+    [InlineData("Templates", "sample-1", "sample-1-in-templates")]
+    [InlineData("Templates", "sample-2", "sample-2-in-templates")]
+    [InlineData("Templates2", "sample-2", "sample-2-in-templates-2")]
+    [InlineData("Templates2", "sample-3", "sample-3-in-templates-2")]
+    [InlineData("Templates2;Templates", "sample-1", "sample-1-in-templates")]
+    [InlineData("Templates2;Templates", "sample-2", "sample-2-in-templates-2")]
+    [InlineData("Templates2;Templates", "sample-3", "sample-3-in-templates-2")]
+    [InlineData("Templates;Templates2", "sample-1", "sample-1-in-templates")]
+    [InlineData("Templates;Templates2", "sample-2", "sample-2-in-templates")]
+    [InlineData("Templates;Templates2", "sample-3", "sample-3-in-templates-2")]
+    public void Can_override_templates(string templateDirectory, string templateName, string expectedResult)
+    {
+        var generatorSettings = new CSharpGeneratorSettings
+        {
+            TemplateDirectory = templateDirectory,
+        };
+
+        var factory = new DefaultTemplateFactory(generatorSettings, [typeof(CSharpGeneratorSettings).Assembly])
+        {
+            FluidParser = new LiquidParser(new FluidParserOptions { AllowLiquidTag = true }),
+        };
+        generatorSettings.TemplateFactory = factory;
+
+        var template = factory.CreateTemplate("csharp", templateName, new { });
+
+        var templateResult = template.Render();
+
+        Assert.Equal(expectedResult, templateResult);
+    }
 }

src/NJsonSchema.CodeGeneration.Tests/Templates/sample-1.liquid

@@ -0,0 +1,3 @@
+{% if true %}
+sample-1-in-templates
+{% endif %}

src/NJsonSchema.CodeGeneration.Tests/Templates/sample-2.liquid

@@ -0,0 +1,3 @@
+{% if true %}
+sample-2-in-templates
+{% endif %}

src/NJsonSchema.CodeGeneration.Tests/Templates2/sample-2.liquid

@@ -0,0 +1,3 @@
+{% if true %}
+sample-2-in-templates-2
+{% endif %}

src/NJsonSchema.CodeGeneration.Tests/Templates2/sample-3.liquid

@@ -0,0 +1,3 @@
+{% if true %}
+sample-3-in-templates-2
+{% endif %}

src/NJsonSchema.CodeGeneration/DefaultTemplateFactory.cs

@@ -121,10 +121,13 @@ private string GetLiquidTemplate(string language, string template, string templa
         {
             if (!template.EndsWith('!') && !string.IsNullOrEmpty(templateDirectory))
             {
-                var templateFilePath = Path.Combine(templateDirectory, template + ".liquid");
-                if (File.Exists(templateFilePath))
+                foreach (var directory in templateDirectory.Split([';'], StringSplitOptions.RemoveEmptyEntries))
                 {
-                    return File.ReadAllText(templateFilePath);
+                    var templateFilePath = Path.Combine(directory, template + ".liquid");
+                    if (File.Exists(templateFilePath))
+                    {
+                        return File.ReadAllText(templateFilePath);
+                    }
                 }
             }