Add namespace generator to SDK (#1092)

* Add namespace generator to SDK

* "" should be office 2007

* fix reflection using

Author: twsouthwick

gen/DocumentFormat.OpenXml.Generator/Data/namespaces.json

@@ -7,6 +7,10 @@
     <IncludeInitShim>true</IncludeInitShim>
   </PropertyGroup>
 
+  <ItemGroup>
+    <EmbeddedResource Include="Data\*.json" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.3" PrivateAssets="all" />

gen/DocumentFormat.OpenXml.Generator/DocumentFormat.OpenXml.Generator.csproj

@@ -0,0 +1,13 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+namespace DocumentFormat.OpenXml.Generator.Models;
+
+public class NamespaceInfo
+{
+    public string Prefix { get; set; } = null!;
+
+    public string Uri { get; set; } = null!;
+
+    public OfficeVersion Version { get; set; }
+}

gen/DocumentFormat.OpenXml.Generator/Models/NamespaceInfo.cs

@@ -0,0 +1,14 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+namespace DocumentFormat.OpenXml.Generator.Models;
+
+public enum OfficeVersion
+{
+    Office2007 = 0,
+    Office2010 = 1,
+    Office2013 = 2,
+    Office2016 = 3,
+    Office2019 = 4,
+    Office2021 = 5,
+}

gen/DocumentFormat.OpenXml.Generator/Models/OfficeVersion.cs

@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using Microsoft.CodeAnalysis;
+using System;
+
+namespace DocumentFormat.OpenXml.Generator.NamespaceGeneration;
+
+[Generator]
+internal class NamespaceGenerator : ISourceGenerator
+{
+    public void Execute(GeneratorExecutionContext context)
+    {
+        if (string.Equals(context.Compilation.AssemblyName, "DocumentFormat.OpenXml", StringComparison.Ordinal))
+        {
+            context.AddSource("Namespaces", OpenXmlGeneratorContext.Shared.Namespaces.Generate());
+        }
+    }
+
+    public void Initialize(GeneratorInitializationContext context)
+    {
+    }
+}

gen/DocumentFormat.OpenXml.Generator/NamespaceGeneration/NamespaceGenerator.cs

@@ -0,0 +1,67 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using DocumentFormat.OpenXml.Generator.Models;
+using System.CodeDom.Compiler;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace DocumentFormat.OpenXml.Generator.NamespaceGeneration;
+
+internal static class NamespaceGeneratorExtensions
+{
+    public static string Generate(this IEnumerable<NamespaceInfo> namespaces)
+    {
+        var sb = new StringWriter();
+        var writer = new IndentedTextWriter(sb);
+
+        writer.WriteFileHeader();
+        writer.WriteLine("using System.Collections.Generic;");
+        writer.WriteLine();
+        writer.WriteLine("namespace DocumentFormat.OpenXml.Features;");
+        writer.WriteLine();
+        writer.WriteLine("internal partial class OpenXmlNamespaceResolver");
+
+        using (writer.AddBlock())
+        {
+            writer.WriteLine("private readonly Dictionary<string, string> _urlToPrefix = new()");
+
+            using (writer.AddBlock(includeSemiColon: true))
+            {
+                foreach (var ns in namespaces)
+                {
+                    writer.WriteList(ns.Uri, ns.Prefix);
+                    writer.WriteLine(",");
+                }
+            }
+
+            writer.WriteLineNoTabs();
+            writer.WriteLine("private readonly Dictionary<string, string> _prefixToUrl = new()");
+
+            using (writer.AddBlock(includeSemiColon: true))
+            {
+                foreach (var ns in namespaces)
+                {
+                    writer.WriteList(ns.Prefix, ns.Uri);
+                    writer.WriteLine(",");
+                }
+            }
+
+            writer.WriteLineNoTabs();
+            writer.WriteLine("private readonly Dictionary<string, FileFormatVersions> _prefixToVersion = new()");
+
+            using (writer.AddBlock(includeSemiColon: true))
+            {
+                foreach (var ns in namespaces)
+                {
+                    writer.WriteList(ns.Prefix, ns.Version);
+
+                    writer.WriteLine(",");
+                }
+            }
+        }
+
+        return sb.ToString();
+    }
+}

gen/DocumentFormat.OpenXml.Generator/NamespaceGeneration/NamespaceGeneratorExtensions.cs

@@ -0,0 +1,48 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using DocumentFormat.OpenXml.Generator.Models;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace DocumentFormat.OpenXml.Generator;
+
+public record OpenXmlGeneratorContext
+{
+    private static readonly JsonSerializer _serializer = JsonSerializer.Create(new()
+    {
+        Converters = new[]
+        {
+            new StringEnumConverter(),
+        },
+    });
+
+    public static OpenXmlGeneratorContext Shared { get; } = Load();
+
+    public IEnumerable<NamespaceInfo> Namespaces { get; init; } = Enumerable.Empty<NamespaceInfo>();
+
+    public static OpenXmlGeneratorContext Load()
+        => new()
+        {
+            Namespaces = Load<NamespaceInfo[]>("namespaces.json"),
+        };
+
+    private static T Load<T>(string name)
+    {
+        using var stream = typeof(OpenXmlGeneratorContext).Assembly.GetManifestResourceStream(typeof(OpenXmlGeneratorContext), $"Data.{name}");
+
+        if (stream is null)
+        {
+            throw new InvalidOperationException($"Could not find stream '{name}'");
+        }
+
+        using var text = new StreamReader(stream);
+        using var reader = new JsonTextReader(text);
+
+        return _serializer.Deserialize<T>(reader)!;
+    }
+}

gen/DocumentFormat.OpenXml.Generator/OpenXmlGeneratorContext.cs

@@ -1,6 +1,7 @@
 // Copyright (c) Microsoft. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+using DocumentFormat.OpenXml.Generator.Models;
 using System;
 using System.CodeDom.Compiler;
 using System.IO;
@@ -42,11 +43,59 @@ public static void WriteEnum<T>(this TextWriter writer, string typeName, T value
         writer.Write(value.ToString());
     }
 
+    public static void WriteList<T1, T2>(this TextWriter writer, T1 item1, T2 item2)
+    {
+        writer.Write("{ ");
+        writer.WriteItem(item1);
+        writer.Write(", ");
+        writer.WriteItem(item2);
+        writer.Write(" ");
+        writer.Write("}");
+    }
+
+    public static void WriteList<T1, T2, T3>(this TextWriter writer, T1 item1, T2 item2, T3 item3)
+    {
+        writer.Write("{ ");
+        writer.WriteItem(item1);
+        writer.Write(", ");
+        writer.WriteItem(item2);
+        writer.Write(", ");
+        writer.WriteItem(item3);
+        writer.Write(" ");
+        writer.Write("}");
+    }
+
+    public static void WriteItem<T>(this TextWriter writer, T item)
+    {
+        if (item is null)
+        {
+            writer.WriteNull();
+        }
+        else if (typeof(T) == typeof(Verbatim))
+        {
+            writer.Write(((Verbatim)(object)item).Value);
+        }
+        else if (typeof(T) == typeof(OfficeVersion))
+        {
+            writer.WriteEnum("FileFormatVersions", (OfficeVersion)(object)item);
+        }
+        else if (typeof(T) == typeof(string))
+        {
+            writer.WriteString((string)(object)item);
+        }
+        else
+        {
+            writer.Write(item.ToString());
+        }
+    }
+
+    public static void WriteNull(this TextWriter writer) => writer.Write("null");
+
     public static void WriteString(this TextWriter writer, string input)
     {
         if (input is null)
         {
-            writer.Write("null");
+            writer.WriteNull();
         }
         else if (input.Length == 0)
         {

gen/DocumentFormat.OpenXml.Generator/TextWriterExtensions.cs

@@ -0,0 +1,14 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+namespace DocumentFormat.OpenXml.Generator;
+
+internal readonly struct Verbatim
+{
+    public Verbatim(string value)
+    {
+        Value = value;
+    }
+
+    public string Value { get; }
+}

gen/DocumentFormat.OpenXml.Generator/Verbatim.cs

@@ -17,6 +17,8 @@ internal partial class DefaultFeatures : IFeatureCollection
 
         [KnownFeature(typeof(IRootElementFactory), typeof(ReflectionBasedRootElementFactory))]
         [KnownFeature(typeof(IPartMetadataFeature), typeof(CachedPartMetadataProvider))]
+        [KnownFeature(typeof(IOpenXmlNamespaceResolver), typeof(OpenXmlNamespaceResolver))]
+        [KnownFeature(typeof(IOpenXmlNamespaceIdResolver), typeof(OpenXmlNamespaceIdResolver))]
         public partial TFeature? Get<TFeature>();
 
         public void Set<TFeature>(TFeature? instance)