asset.h

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#pragma once
 
#if __has_include("defs.h")
#include "defs.h"
#endif
 
#include <string>
#include <utf8/utf8.h>
 
#ifndef RESFILE
#define RESFILE 256
#endif
 
namespace mlib {
 
class asset
{
public:
  asset (int id_, const std::string& name_ = std::string (), bool persist = false);
  ~asset ();
  const void* data ();
  size_t size ();
  bool write (const std::string& path);
  bool remove ();
 
  const std::string name;
 
private:
  void load ();
  int id;
  bool written;
  bool loaded;
  bool keep; // do not delete asset file in destructor
  size_t sz;
  void* ptr;
  std::string fullpath;
};
 
inline asset::asset (int id_, const std::string& name_, bool persist)
  : name (name_)
  , id (id_)
  , written (false)
  , keep (persist)
  , loaded (false)
  , sz (0)
  , ptr (nullptr)
{}
 
inline asset::~asset ()
{
  if (written && !keep)
    remove ();
}
 
/*
  Delete asset file from disk.
 
  File is deleted even if this is a persistent asset.
*/
inline bool asset::remove ()
{
  if (written)
  {
    written = false;
    return utf8::remove (fullpath);
  }
  return true;
}
 
inline size_t asset::size ()
{
  return sz;
}
} // namespace mlib