/usr/include/dar/archive_version.hpp is in libdar-dev 2.4.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// dar - disk archive - a backup/restoration program
// Copyright (C) 2002-2052 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// to contact the author : http://dar.linux.free.fr/email.html
/*********************************************************************/
// $Id: archive_version.hpp,v 1.3 2011/01/09 17:25:58 edrusb Rel $
//
/*********************************************************************/
/// \file archive_version.hpp
/// \brief class archive_version that rules which archive format to follow
/// \ingroup Private
#ifndef ARCHIVE_LIBDAR_VERSION_HPP
#define ARCHIVE_LIBDAR_VERSION_HPP
#include "/usr/include/dar/libdar_my_config.h"
#include <string>
#include "/usr/include/dar/integers.hpp"
#include "/usr/include/dar/infinint.hpp"
#include "/usr/include/dar/generic_file.hpp"
namespace libdar
{
/// \ingroup Private
/// @}
/// class archive_version manages the version of the archive format
class archive_version
{
public:
/// archive_version constructor
/// \param[in] x is the version number
/// \param[in] fix is a decimal-like
/// \note the fix argument must only be used when the current stable version need to be increased
/// due to a bug fix. This let the concurrent development version to keep the same version (usually x+1)
/// while having the stable version using a slightly different format to fix a bug.
archive_version(U_16 x = 0, unsigned char fix = 0);
bool operator < (const archive_version & ref) const { return value() < ref.value(); };
bool operator >= (const archive_version & ref) const { return value() >= ref.value(); };
bool operator == (const archive_version & ref) const { return value() == ref.value(); };
bool operator != (const archive_version & ref) const { return value() != ref.value(); };
bool operator > (const archive_version & ref) const { return value() > ref.value(); };
bool operator <= (const archive_version & ref) const { return value() <= ref.value(); };
void dump(generic_file & f) const;
void read(generic_file & f);
std::string display() const;
bool is_droot() const { return droot; };
// the string read from file (read()) is "dro", which is the start of a catalogue
// this may be the case with new versions where a header_version is placed where ought to be the catalogue
// in this situation, we can know that this an old archive and must re-read the archive in the old way
private:
U_16 version;
unsigned char fix;
bool droot;
U_I value() const { return (U_I)(version)*256 + fix; };
static unsigned char to_digit(unsigned char val);
static unsigned char to_char(unsigned char val);
};
extern const archive_version empty_archive_version();
/// @}
} // end of namespace
#endif
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