﻿// Copyright 2013 Joshua R. Rodgers
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================

using System;
using System.IO;
using SharpDX.D3DCompiler;

namespace ShaderCompiler
{
    public class ShaderInclude : Include
    {
        private Stream _fileStream;
        private readonly string _includePath;

        public ShaderInclude(string includePath)
        {
            _includePath = includePath;
        }

        public void Dispose()
        {
            if (_fileStream != null)
            {
                _fileStream.Dispose();
            }
        }

        public IDisposable Shadow { get; set; }

        public Stream Open(IncludeType type, string fileName, Stream parentStream)
        {
            _fileStream = File.OpenRead(Path.Combine(_includePath, fileName));

            return _fileStream;
        }

        public void Close(Stream stream)
        {
            Dispose();
        }
    }
}