Chris@16: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
Chris@16: // basic_binary_iarchive.ipp:
Chris@16: 
Chris@16: // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
Chris@16: // Use, modification and distribution is subject to the Boost Software
Chris@16: // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: //  See http://www.boost.org for updates, documentation, and revision history.
Chris@16: #include <string>
Chris@16: #include <boost/assert.hpp>
Chris@16: #include <algorithm>
Chris@16: #include <cstring>
Chris@16: 
Chris@101: #include <boost/config.hpp>
Chris@16: #if defined(BOOST_NO_STDC_NAMESPACE)
Chris@16: namespace std{ 
Chris@16:     using ::memcpy; 
Chris@16:     using ::strlen;
Chris@16:     using ::size_t;
Chris@16: }
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/detail/workaround.hpp>
Chris@16: #include <boost/detail/endian.hpp>
Chris@16: 
Chris@16: #include <boost/archive/basic_binary_iarchive.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace archive {
Chris@16: 
Chris@16: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
Chris@16: // implementation of binary_binary_archive
Chris@16: template<class Archive>
Chris@16: BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
Chris@16: basic_binary_iarchive<Archive>::load_override(class_name_type & t, int){
Chris@16:     std::string cn;
Chris@16:     cn.reserve(BOOST_SERIALIZATION_MAX_KEY_SIZE);
Chris@16:     load_override(cn, 0);
Chris@16:     if(cn.size() > (BOOST_SERIALIZATION_MAX_KEY_SIZE - 1))
Chris@16:         boost::serialization::throw_exception(
Chris@16:             archive_exception(archive_exception::invalid_class_name)
Chris@16:         );
Chris@16:     std::memcpy(t, cn.data(), cn.size());
Chris@16:     // borland tweak
Chris@16:     t.t[cn.size()] = '\0';
Chris@16: }
Chris@16: 
Chris@16: template<class Archive>
Chris@16: BOOST_ARCHIVE_OR_WARCHIVE_DECL(void)
Chris@16: basic_binary_iarchive<Archive>::init(){
Chris@16:     // read signature in an archive version independent manner
Chris@16:     std::string file_signature;
Chris@101:     
Chris@101:     #if 0 // commented out since it interfers with derivation
Chris@101:     BOOST_TRY {
Chris@16:         std::size_t l;
Chris@16:         this->This()->load(l);
Chris@16:         if(l == std::strlen(BOOST_ARCHIVE_SIGNATURE())) {
Chris@16:             // borland de-allocator fixup
Chris@16:             #if BOOST_WORKAROUND(_RWSTD_VER, BOOST_TESTED_AT(20101))
Chris@16:             if(NULL != file_signature.data())
Chris@16:             #endif
Chris@16:                 file_signature.resize(l);
Chris@16:             // note breaking a rule here - could be a problem on some platform
Chris@16:             if(0 < l)
Chris@16:                 this->This()->load_binary(&(*file_signature.begin()), l);
Chris@16:         }
Chris@16:     }
Chris@101:     BOOST_CATCH(archive_exception const &) {  // catch stream_error archive exceptions
Chris@16:         // will cause invalid_signature archive exception to be thrown below
Chris@16:         file_signature = "";   
Chris@16:     }
Chris@101:     BOOST_CATCH_END
Chris@101:     #else
Chris@101:     // https://svn.boost.org/trac/boost/ticket/7301
Chris@101:     * this->This() >> file_signature;
Chris@101:     #endif
Chris@101: 
Chris@16:     if(file_signature != BOOST_ARCHIVE_SIGNATURE())
Chris@16:         boost::serialization::throw_exception(
Chris@16:             archive_exception(archive_exception::invalid_signature)
Chris@16:         );
Chris@16: 
Chris@16:     // make sure the version of the reading archive library can
Chris@16:     // support the format of the archive being read
Chris@16:     library_version_type input_library_version;
Chris@16:     //* this->This() >> input_library_version;
Chris@16:     {
Chris@16:         int v = 0;
Chris@16:         v = this->This()->m_sb.sbumpc();
Chris@16:         #if defined(BOOST_LITTLE_ENDIAN)
Chris@16:         if(v < 6){
Chris@16:             ;
Chris@16:         }
Chris@16:         else
Chris@16:         if(v < 7){
Chris@16:             // version 6 - next byte should be zero
Chris@16:             this->This()->m_sb.sbumpc();
Chris@16:         }
Chris@16:         else
Chris@16:         if(v < 8){
Chris@16:             int x1;
Chris@16:             // version 7 = might be followed by zero or some other byte
Chris@16:             x1 = this->This()->m_sb.sgetc();
Chris@16:             // it's =a zero, push it back
Chris@16:             if(0 == x1)
Chris@16:                 this->This()->m_sb.sbumpc();
Chris@16:         }
Chris@16:         else{
Chris@16:             // version 8+ followed by a zero
Chris@16:             this->This()->m_sb.sbumpc();
Chris@16:         }
Chris@16:         #elif defined(BOOST_BIG_ENDIAN)
Chris@16:         if(v == 0)
Chris@16:             v = this->This()->m_sb.sbumpc();
Chris@16:         #endif
Chris@16:         input_library_version = static_cast<library_version_type>(v);
Chris@16:     }
Chris@16:     
Chris@16:     #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3205))
Chris@16:     this->set_library_version(input_library_version);
Chris@16:     #else
Chris@101:     detail::basic_iarchive::set_library_version(input_library_version);
Chris@16:     #endif
Chris@16:     
Chris@16:     if(BOOST_ARCHIVE_VERSION() < input_library_version)
Chris@16:         boost::serialization::throw_exception(
Chris@16:             archive_exception(archive_exception::unsupported_version)
Chris@16:         );
Chris@16: }
Chris@16: 
Chris@16: } // namespace archive
Chris@16: } // namespace boost