ShaderKeyFileHelper.cs

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// Copyright (c) 2014 Silicon Studio Corp. (http://siliconstudio.co.jp)
// This file is distributed under GPL v3. See LICENSE.md for details.
using System;
using System.Linq;
using System.Text;

using SiliconStudio.Paradox.Shaders.Parser;
using SiliconStudio.Paradox.Shaders.Parser.Mixins;

namespace SiliconStudio.Paradox.VisualStudio.Commands.Shaders
{
    class ShaderKeyFileHelper
    {
        public static byte[] GenerateCode(string inputFileName, string inputFileContent)
        {
            // Always output a result into the file
            string result;
            try
            {
                var parsingResult = ParadoxShaderParser.TryPreProcessAndParse(inputFileContent, inputFileName);

                // Try to generate a mixin code.
                var shaderKeyGenerator = new ShaderMixinCodeGen(parsingResult.Shader, parsingResult);

                shaderKeyGenerator.Run();
                result = shaderKeyGenerator.Text ?? string.Empty;
            }
            catch (Exception ex)
            {
                result = "// Unexpected exceptions occured while generating the file\n" + ex;
            }

            // We force the UTF8 to include the BOM to match VS default
            var data = Encoding.UTF8.GetBytes(result);
            return Encoding.UTF8.GetPreamble().Concat(data).ToArray();
        }
    }
}