/*
Copyright (c) by respective owners including Yahoo!, Microsoft, and
individual contributors. All rights reserved.  Released under a BSD (revised)
license as described in the file LICENSE.
*/

#include "io_buf.h"

using namespace System;
using namespace System::IO;

namespace VW
{
/// <summary>
/// C++ wrapper for managed <see cref="Stream"/>.
/// </summary>
class clr_io_buf : public io_buf
{
private:
  gcroot<Stream^> m_stream;
  gcroot<cli::array<unsigned char>^> m_buffer;

  void ensure_buffer_size(size_t nbytes);

public:
  /// <summary>
  /// Initializes a new <see cref="clr_io_buf"/> instance.
  /// </summary>
  clr_io_buf(Stream^ stream);

  virtual int open_file(const char* name, bool stdin_off, int flag = READ);

  virtual void reset_file(int f);

  virtual ssize_t read_file(int f, void* buf, size_t nbytes);

  virtual size_t num_files();

  virtual ssize_t write_file(int file, const void* buf, size_t nbytes);

  virtual bool compressed();

  virtual void flush();

  virtual bool close_file();
};
}