asset.h

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/*
  Copyright (c) Mircea Neacsu (2014-2025) Licensed under MIT License.
  This file is part of MLIB project. See LICENSE file for full license terms.
*/

 
#pragma once
 
#ifndef RESFILE
#define RESFILE 256
#endif
 
#ifndef RC_INVOKED //
 
#if __has_include("defs.h")
#include "defs.h"
#endif
 
#include <string>
#include <filesystem>
 
namespace mlib {

class asset
{
public:
  asset (int id_, const std::filesystem::path& name_ = std::filesystem::path (),
         bool persist = false);
  ~asset ();

  const void* data ();

  size_t size ();
  
  bool write (const std::filesystem::path& root_path);

  bool remove ();

  std::filesystem::path name;
 
private:
  bool load ();
  int id;
  bool written;
  bool loaded;
  bool keep; // do not delete asset file in destructor
  void* ptr;
  size_t sz;
  std::filesystem::path fullpath;
};

inline
asset::asset (int id_, const std::filesystem::path& name_, bool persist)
  : name (name_)
  , id (id_)
  , written (false)
  , keep (persist)
  , loaded (false)
  , sz (0)
  , ptr (nullptr)
{}

inline
asset::~asset ()
{
  if (written && !keep)
    remove ();
}

inline
bool asset::remove ()
{
  if (written)
  {
    written = false;
    return std::filesystem::remove (fullpath);
  }
  return false;
}

inline
size_t asset::size ()
{
  if (!loaded)
    load ();
  return sz;
}

inline
const void* asset::data ()
{
  if (!loaded)
    load ();
 
  return ptr;
}
 
} // namespace mlib
#endif //RC_INVOKED