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Add localized strings generator (#13)
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‎FluentLauncher.Infra.LocalizedStrings.SourceGenerators/FluentLauncher.Infra.LocalizedStrings.SourceGenerators.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>netstandard2.0</TargetFramework>
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<EnforceExtendedAnalyzerRules>true</EnforceExtendedAnalyzerRules>
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<LangVersion>13.0</LangVersion>
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<Nullable>enable</Nullable>
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<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
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</PropertyGroup>
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<PropertyGroup>
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<!-- Ensure the source generator can be loaded on any architecture -->
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<PlatformTarget>AnyCPU</PlatformTarget>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0">
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<PrivateAssets>all</PrivateAssets>
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<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
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</PackageReference>
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<PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.12.0" />
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</ItemGroup>
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</Project>

‎FluentLauncher.Infra.LocalizedStrings.SourceGenerators/LocalizedStringsGenerator.cs‎

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using System;
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using System.Collections.Generic;
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using System.Collections.Immutable;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Resources;
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using System.Text;
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using System.Xml.Linq;
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using CommunityToolkit.Mvvm.SourceGenerators.Extensions;
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.CSharp.Syntax;
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using Microsoft.CodeAnalysis.Text;
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namespace FluentLauncher.Infra.Settings.SourceGenerators;
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internal record struct ClassInfo(string Namespace, string ClassName);
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internal record struct ReswFileInfo(string FilePath)
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{
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public string Filename => Path.GetFileNameWithoutExtension(FilePath);
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public string ResourceMapName => Filename.Split('.')[0];
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public string Qualifier => Filename.Substring(ResourceMapName.Length, Filename.Length - ResourceMapName.Length - ".resw".Length);
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}
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[Generator(LanguageNames.CSharp)]
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public class LocalizedStringsGenerator : IIncrementalGenerator
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{
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public LocalizedStringsGenerator()
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{
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#if DEBUG
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if (!Debugger.IsAttached)
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{
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//Debugger.Launch();
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}
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#endif
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}
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public void Initialize(IncrementalGeneratorInitializationContext context)
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{
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// Find all classes with the [GeneratedLocalizedStrings] attribute
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var classDeclarations = context.SyntaxProvider.ForAttributeWithMetadataName(
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"FluentLauncher.Infra.LocalizedStrings.GeneratedLocalizedStringsAttribute",
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static (node, _) => node is ClassDeclarationSyntax,
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static (ctx, token) =>
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{
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// Extract class info
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ITypeSymbol localizedStringClassSymbol = (ITypeSymbol)ctx.TargetSymbol;
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string containingNamespace = localizedStringClassSymbol.ContainingNamespace.ToDisplayString();
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string className = localizedStringClassSymbol.Name;
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return new ClassInfo(containingNamespace, className);
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})
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.Collect();
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// Find all .resw files, group by resource map name and keep the neutral one (or the first in alphabetical order)
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var reswFilesProvider = context.AdditionalTextsProvider
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// Find all .resw files
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.Where(file => file.Path.EndsWith(".resw", StringComparison.OrdinalIgnoreCase))
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.Select((file, token) =>
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{
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var reswFile = new ReswFileInfo(file.Path);
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return (reswFile.ResourceMapName, reswFile);
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})
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.GroupBy(
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static item => item.Left,
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static item => item.Right
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)
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.Select((group, token) => group.Right
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.ToList()
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.OrderBy(file => file.Filename)
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.First()
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)
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.Collect();
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context.RegisterSourceOutput(classDeclarations.Combine(reswFilesProvider), Execute);
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}
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private static void Execute(SourceProductionContext context, (ImmutableArray<ClassInfo> classInfos, ImmutableArray<ReswFileInfo> reswFiles) input)
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{
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var (classes, reswFiles) = input;
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if (classes.IsDefaultOrEmpty || reswFiles.IsDefaultOrEmpty)
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return;
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foreach (var classInfo in classes)
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{
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var namespaceName = classInfo.Namespace;
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var className = classInfo.ClassName;
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// Parse and generate properties for each .resw file
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IEnumerable<string> defaultStringIds = []; // Strings in Resources.resw
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var otherStringIds = new Dictionary<string, IEnumerable<string>>();
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foreach (var reswFile in reswFiles)
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{
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string resourceMapName = reswFile.ResourceMapName;
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if (reswFile.Filename.Equals("Resources", StringComparison.OrdinalIgnoreCase))
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defaultStringIds = ParseReswFile(reswFile);
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else
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otherStringIds[resourceMapName] = ParseReswFile(reswFile);
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}
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// Generate the class in the detected namespace
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string source = GenerateClass(namespaceName, className, defaultStringIds, otherStringIds);
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// Add the generated source to the compilation
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context.AddSource($"{namespaceName}.{className}.g.cs", SourceText.From(source, Encoding.UTF8));
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}
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}
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private static IEnumerable<string> ParseReswFile(ReswFileInfo reswFile)
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{
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using var reader = new StreamReader(reswFile.FilePath);
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IEnumerable<string>? stringIds = System.Xml.Linq.XDocument.Load(reader).Root?
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.Elements("data")
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.Select(node => node.Attribute("name")?.Value.Replace(".", "/"))
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.Where(name => !string.IsNullOrWhiteSpace(name))!;
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return stringIds ?? [];
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//properties.Add($"public static string {propertyName} => s_resourceMap.GetValue(\"{namespaceName}/{name}\").ValueAsString;");
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}
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private static string GenerateClass(
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string namespaceName,
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string className,
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IEnumerable<string> defaultStringIds,
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Dictionary<string, IEnumerable<string>> otherStringIds)
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{
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var propertyBuilder = new StringBuilder();
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propertyBuilder.AppendLine("// Default resource map (Resources.resw)");
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foreach (var id in defaultStringIds)
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{
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string propertyName = id.Replace('/', '_').Replace(' ', '_');
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propertyBuilder.AppendLine($" public static string {propertyName} => s_resourceMap.GetValue(\"/Resources/{id}\").ValueAsString;");
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}
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propertyBuilder.AppendLine("\n // Other resource maps");
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foreach (var item in otherStringIds)
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{
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string resourceMapName = item.Key;
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IEnumerable<string> stringIds = item.Value;
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propertyBuilder.AppendLine($" public static class {resourceMapName}")
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.AppendLine(" {");
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foreach (string id in stringIds)
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{
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string propertyName = id.Replace('/', '_').Replace(' ', '_');
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propertyBuilder.AppendLine($" public static string {propertyName} => s_resourceMap.GetValue(\"/{resourceMapName}/{id}\").ValueAsString;");
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}
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propertyBuilder.AppendLine(" }");
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}
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return $$"""
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using global::Microsoft.Windows.ApplicationModel.Resources;
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namespace {{namespaceName}}
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{
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static partial class {{className}}
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{
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private static ResourceManager s_resourceManager;
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private static ResourceMap s_resourceMap;
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static {{className}}()
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{
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s_resourceManager = new ResourceManager();
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s_resourceMap = s_resourceManager.MainResourceMap;
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}
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{{propertyBuilder}}
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}
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}
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""";
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}
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}

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