mem_block.hpp
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/*********************************************************************/
// dar - disk archive - a backup/restoration program
// Copyright (C) 2002-2023 Denis Corbin
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// to contact the author, see the AUTHOR file
/*********************************************************************/
#ifndef MEM_BLOCK_HPP
#define MEM_BLOCK_HPP
#include "../my_config.h"
#include <string>
#include "integers.hpp"
namespace libdar
{
class mem_block
{
public:
mem_block(U_I size = 0);
mem_block(const mem_block & ref) = delete;
mem_block(mem_block && ref) noexcept;
mem_block & operator = (const mem_block & ref) = delete;
mem_block & operator = (mem_block && ref) noexcept;
virtual ~mem_block();
void resize(U_I size);
U_I read(char *a, U_I size);
U_I write(const char *a, U_I size);
void rewind_read(U_I offset = 0);
void reset() { data_size = 0; read_cursor = 0; write_cursor = 0; };
U_I get_max_size() const { return alloc_size; };
U_I get_data_size() const { return data_size; };
U_I get_read_offset() const { return read_cursor; };
bool all_is_read() const { return read_cursor == data_size; };
bool is_full() const { return data_size == alloc_size; };
bool is_empty() const { return data_size == 0; };
char* get_addr() { return data; };
void set_data_size(U_I size);
private:
char* data;
U_I alloc_size;
U_I data_size;
U_I read_cursor;
U_I write_cursor;
void move_from(mem_block && ref);
};
} // end of namespace
#endif
integers.hpp
are defined here basic integer types that tend to be portable
libdar
libdar namespace encapsulate all libdar symbols
Definition: archive.hpp:47