A view engine media type formatter for WCF Web APIs

gistfile2.txt

ViewEngineProcessor.cs

using System;
using System.Collections.Generic;
using System.ServiceModel.Description;
using Microsoft.ServiceModel.Http;
using Nina.ViewEngines;

namespace Http.Formatters
{
    public class ViewEngineProcessor<T> : GenericMediaTypeProcessor<T>
    {
        private static readonly IDictionary<string, ITemplate> _cache = new Dictionary<string, ITemplate>();
        private readonly string _basePath;

        public ViewEngineProcessor(HttpOperationDescription operation, MediaTypeProcessorMode mode, string basePath = "Views/")
            : base(operation, mode)
        {
            _basePath = basePath;
        }

        public override IEnumerable<string> SupportedMediaTypes
        {
            get
            {
                yield return "text/html";
                //yield return "application/xhtml+xml";
            }
        }

        public override object ReadFromStream(System.IO.Stream stream, System.Net.Http.HttpRequestMessage request)
        {
            throw new NotImplementedException();
        }

        public override void WriteToStream(T instance, System.IO.Stream stream, System.Net.Http.HttpRequestMessage request)
        {
            ITemplate template;
            string templateName = _basePath + typeof(T).Name;
            Type modelType = instance.GetType();
            if (Nina.Configuration.Configure.IsDevelopment || !_cache.TryGetValue(templateName, out template))
            {
                template = Nina.Configuration.Configure.Views.Engine.Compile<T>(templateName);
                _cache[templateName] = template;
            }

            using (var sw = new System.IO.StreamWriter(stream.PreventClose()))
            {
                template.Render(sw, instance);
                sw.Flush();
            } 
        }
    }
}