aspnetcore/build/Resources.tt

<#@ template debug="true" hostspecific="true" language="C#" #>
<#@ assembly name="System.Core" #>
<#@ assembly name="System.Windows.Forms" #>
<#@ assembly name="Microsoft.VisualStudio.Shell.Interop.8.0" #>
<#@ assembly name="EnvDTE" #>
<#@ assembly name="EnvDTE80" #>
<#@ import namespace="System" #>
<#@ import namespace="System.Collections" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.IO" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Resources" #>
<#@ import namespace="System.Text" #>
<#@ import namespace="System.Text.RegularExpressions" #>
<#@ import namespace="Microsoft.VisualStudio.Shell.Interop" #>
<#@ import namespace="EnvDTE" #>
<#@ import namespace="EnvDTE80" #>
<#
  var hostServiceProvider = (IServiceProvider)Host;
  var dte = (EnvDTE.DTE)hostServiceProvider.GetService(typeof(EnvDTE.DTE));
  var templateProjectItem = dte.Solution.FindProjectItem(Host.TemplateFile);
  var projectDirectory = Path.GetDirectoryName(templateProjectItem.ContainingProject.FullName);
  var ttDirectory = Path.Combine(projectDirectory, "Properties");
  var projectName = Path.GetFileName(projectDirectory.TrimEnd('/'));
  
  foreach (var resxFile in Directory.EnumerateFiles(projectDirectory, "*.resx", SearchOption.AllDirectories))
  {
    var fileName = Path.GetFileNameWithoutExtension(resxFile);
    var parameterMatcher = new Regex(@"\{([a-z]\w+)\}");
    var resourceStrings = new List<ResourceData>();

    using (var resxReader = new ResXResourceReader(resxFile))
    {
        resxReader.UseResXDataNodes = true;

        foreach (DictionaryEntry entry in resxReader)
        {
            var node = (ResXDataNode)entry.Value;
            var value = (string)node.GetValue((System.ComponentModel.Design.ITypeResolutionService)null);
            
            var arguments 
                = parameterMatcher
                    .Matches(value)
                    .Cast<Match>()
                    .Select(m => m.Groups[1].Value)
                    .Distinct()
                    .ToList();

            resourceStrings.Add(
                new ResourceData 
                    {
                        Name = node.Name,
                        Value = value,
                        Arguments = arguments
                    });
        }
    }

    GenerationEnvironment.AppendFormat(
@"// <auto-generated />
namespace {0}
{{
    using System.Globalization;
    using System.Reflection;
    using System.Resources;

    internal static class {1}
    {{
        private static readonly ResourceManager _resourceManager
            = new ResourceManager(""{0}.{1}"", typeof({1}).GetTypeInfo().Assembly);
", projectName, fileName);

    foreach (var resourceString in resourceStrings)
    {
        GenerationEnvironment.AppendLine();
        GenerationEnvironment.AppendFormat(@"        /// <summary>").AppendLine();
    foreach (var line in resourceString.Value.Split(new[] { Environment.NewLine }, StringSplitOptions.None))
    {
      GenerationEnvironment.AppendFormat("        /// {0}", line.Replace("<", "&lt;").Replace(">", "&gt;"))
                           .AppendLine();
    }

        GenerationEnvironment.AppendFormat(
@"        /// </summary>
        internal static string {0}{1}
        {{
", resourceString.Name, resourceString.Arguments.Count > 0 ? resourceString.Parameters : string.Empty);

        if (resourceString.Arguments.Count == 0)
        {
            GenerationEnvironment.AppendFormat(
@"            get {{ return GetString(""{0}""); }}", resourceString.Name);
        }
        else
        {
            GenerationEnvironment.AppendFormat(
@"            return string.Format(CultureInfo.CurrentCulture, GetString(""{0}"", {2}), {1});", 
                resourceString.Name, resourceString.FormatArguments, resourceString.ArgumentNames);
        }

        GenerationEnvironment.AppendLine().Append(
@"        }").AppendLine();
    }

    GenerationEnvironment.Append(@"
        private static string GetString(string name, params string[] argumentNames)
        {
            var value = _resourceManager.GetString(name);

            System.Diagnostics.Debug.Assert(value != null);

            for (var i = 0; i < argumentNames.Length; i++)
            {
                value = value.Replace(""{"" + argumentNames[i] + ""}"", ""{"" + i + ""}"");
            }

            return value;
        }
    }
}
");

    var outputPath = Path.Combine(ttDirectory, fileName + ".Designer.cs");

    File.WriteAllText(outputPath, GenerationEnvironment.ToString());
    GenerationEnvironment.Length = 0;

    var resxProjectItem = dte.Solution.FindProjectItem(resxFile);
    resxProjectItem.ProjectItems.AddFromFile(outputPath);
}
#>
<#+

private class ResourceData
{
    public string Name { get; set; }
    public string Value { get; set; }
    public List<string> Arguments { get; set; }

    public string FormatArguments
    {
        get { return string.Join(", ", Arguments); }
    }

    public string ArgumentNames
    {
        get { return string.Join(", ", Arguments.Select(a => "\"" + a + "\"")); }
    }

    public string Parameters
    {
        get { return "(" + string.Join(", ", Arguments.Select(a => "object " + a)) + ")"; }
    }
}

#>