circular_file.h

#pragma once
// transposed 2011-04-08
// originally from C++ sockets library tcp_socket::circular_file
 
 
#include "acme/prototype/prototype/memory.h"
#include "file.h"
 
 
namespace file
{

 
   class CLASS_DECL_ACME circular_file :
      virtual public file
   {
   protected:
 
 
      memory m_memory;
      memsize m_max;
      memsize m_q;
      memsize m_b;
      memsize m_t;
      memsize m_count;
 
 
   public:
 
 
      circular_file(memsize size);
      circular_file(const circular_file& buffer);
      circular_file(circular_file &&) = delete;
      circular_file& operator=(const circular_file& buffer);
      ~circular_file();

      using ::file::file::write;
      void write(const void * pdata, memsize l);
      using ::file::file::read;
      memsize read(void * pbuffer, memsize l);
      bool erase(memsize l);
      using ::file::file::read_string;
      string read_string(memsize l);

      filesize get_length() const;
      const_char_pointer GetStart();
      memsize GetL();
      memsize Space();

      memsize ByteCounter(bool clear = false);
 
   };
 
 
} // namespace file