--- /dev/null
+// Copyright (C) 2007-2021 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+// File : SMESH_BoostTxtArchive.cxx
+// Created : Thu Aug 5 21:19:31 2021
+// Author : Edward AGAPOV (eap)
+
+#include "SMESH_BoostTxtArchive.hxx"
+
+#include <cctype>
+#include <sstream>
+#include <boost/archive/text_oarchive.hpp>
+
+
+using namespace SMESHUtils;
+
+BoostTxtArchive::BoostTxtArchive( const std::string& s ):
+ myArchiveReader( nullptr ),
+ myString( s ),
+ myStringFixed( false ),
+ myStream( nullptr ),
+ myOwnStream( true )
+{
+ myStream = new std::istringstream( myString );
+ makeReader();
+}
+
+BoostTxtArchive::BoostTxtArchive( std::istream& stream ):
+ myArchiveReader( nullptr ),
+ myStringFixed( false ),
+ myStream( &stream ),
+ myOwnStream( false )
+{
+ if ( std::istringstream * sstrm = dynamic_cast< std::istringstream* >( &stream ))
+ myString = sstrm->str();
+
+ makeReader();
+}
+
+BoostTxtArchive::~BoostTxtArchive()
+{
+ delete myArchiveReader; myArchiveReader = nullptr;
+ if ( myOwnStream )
+ delete myStream;
+}
+
+void BoostTxtArchive::makeReader()
+{
+ myArchiveReader = nullptr;
+ try
+ {
+ myArchiveReader = new boost::archive::text_iarchive( *myStream );
+ }
+ catch (...)
+ {
+ if ( fixString() )
+ try
+ {
+ myArchiveReader = new boost::archive::text_iarchive( *myStream );
+ }
+ catch(...)
+ {
+ myArchiveReader = nullptr;
+ }
+ }
+}
+
+namespace
+{
+ //================================================================================
+ /*!
+ * \brief Return archive created by current version of boost::archive
+ */
+ //================================================================================
+
+ std::string getCurrentVersionArchive( BoostTxtArchive & bta)
+ {
+ std::ostringstream strm;
+ boost::archive::text_oarchive archive( strm );
+ archive << bta;
+ return strm.str();
+ }
+}
+
+//================================================================================
+/*!
+ * \brief Change boost::archive library version in myString to be equal to
+ * the current library version
+ * \return bool - return true if the version is changed
+ */
+//================================================================================
+
+bool BoostTxtArchive::fixString()
+{
+ if ( myStringFixed )
+ return false;
+ myStringFixed = true;
+
+ const char* sub = "serialization::archive ";
+ const size_t subLen = 23;
+
+ size_t where1 = myString.find( sub );
+ if ( where1 == std::string::npos )
+ return false;
+
+ std::string nowString = getCurrentVersionArchive( *this );
+ size_t where2 = nowString.find( sub );
+ if ( where2 == std::string::npos )
+ return false;
+
+ bool sameVersion = true;
+ for ( size_t i1 = where1 + subLen, i2 = where2 + subLen;
+ i2 < nowString.size();
+ ++i1, ++i2 )
+ {
+ if ( myString[ i1 ] != nowString[ i2 ] )
+ {
+ sameVersion = false;
+ myString[ i1 ] = nowString[ i2 ];
+ }
+ if ( isspace( myString[ i1 ]))
+ break;
+ }
+
+ if ( !sameVersion )
+ {
+ if ( myOwnStream )
+ delete myStream;
+ myStream = new std::istringstream( myString );
+ myOwnStream = true;
+ }
+
+ return !sameVersion;
+}
