Re: [boost] [serialization] "stream error" when port fromboost_1.33 toboost_1.36

Subject: Re: [boost] [serialization] "stream error" when port fromboost_1.33 toboost_1.36
From: Robert Ramey (ramey_at_[hidden])
Date: 2008-09-26 00:16:16

One odd thing to me is the usage of std::ios::binary which will handle cr/lf 
as two
characters rather than one.

ipangth wrote:
>> What are the anomolies?
>> I debug the xml file with VC8, and  the ifstream test retturn
>> "failbit".
>> See the xml file attached behind, i dont know how to find the
>> "failbit".
>> And some one can see the attach xml to help me?
>>
>> template<class CharType>
>> bool basic_xml_grammar<CharType>::my_parse(
>>    BOOST_DEDUCED_TYPENAME basic_xml_grammar<CharType>::IStream & is,
>>    const rule_t & rule_,
>>    CharType delimiter
>> ){
>>    if(is.fail()){ ////here return false, the stream state is
>>        "failbit" boost::throw_exception(
>>            archive_exception(archive_exception::stream_error)
>>        );
>>    }
>>
>> 2008/9/26 Robert Ramey <ramey_at_[hidden]>:
>>> Take a look at the xml archive and see if there are any anomolies
>>> in it.
>>>
>>> Robert Ramey
>>>
>>> ipangth wrote:
>>>>> I just port a project using boost_1.33_1 to use boost_1.36.
>>>>> The project has a Server class using a std::set<Server>
>>>>> serialization,
>>>>> the serialization save and load functions code see behind.
>>>>>
>>>>> I use gcc 4.1 and run on FC6.
>>>>> The porting problem is, when the old boost_1.33 generates(save) a
>>>>> xml file, then use  boost_1.36 load the xml throws an exception
>>>>> "stream error"!
>>>>>
>>>>> the exception error code line : boost::archive::xml_iarchive
>>>>> ia(ifs);
>>>>>
>>>>> How can i sovle it?
>>>>>
>>>>>
>>>>> class Server
>>>>> {
>>>>> public:
>>>>>   int id;
>>>>>   std::string ip;
>>>>>   int port;
>>>>>
>>>>> private:
>>>>>   static std::set<Server> lst_;
>>>>>
>>>>>   static int dirty_;
>>>>> };
>>>>>
>>>>> #endif
>>>>>
>>>>>
>>>>>
>>>>> #ifdef USE_SERVER_SERIALIZATION
>>>>>
>>>>> #ifndef _SERVER_SERIALIZATION_
>>>>> #define _SERVER_SERIALIZATION_
>>>>>
>>>>> BOOST_CLASS_VERSION(Server, 1)
>>>>> namespace boost {
>>>>>   namespace serialization {
>>>>>
>>>>>       template <class archive>
>>>>>       void serialize(archive & ar, Server & t, const unsigned int
>>>>>       ver) {
>>>>>           ar & BOOST_SERIALIZATION_NVP(t.id);
>>>>>           ar & BOOST_SERIALIZATION_NVP(t.ip);
>>>>>           ar & BOOST_SERIALIZATION_NVP(t.port);
>>>>>       }
>>>>>
>>>>>   }
>>>>> }
>>>>>
>>>>> #endif
>>>>>
>>>>> #endif
>>>>>
>>>>> int Server::save(    const std::string & file)
>>>>> {
>>>>>   try {
>>>>>       std::ofstream ofs(file.c_str(), std::ios::binary);
>>>>>       {
>>>>>       boost::archive::xml_oarchive oa(ofs);
>>>>>       oa << BOOST_SERIALIZATION_NVP(lst_);
>>>>>       }
>>>>>   } catch(...) {
>>>>>       return ERROR_ERROR;
>>>>>   }
>>>>>
>>>>>
>>>>>
>>>>>   return ERROR_SUCCEED;
>>>>> }
>>>>>
>>>>>
>>>>> int  Server::load(const std::string & file)
>>>>> {
>>>>>       std::set<Server> Server::lst_;
>>>>>       try
>>>>>       {
>>>>>         std::ifstream ifs(file.c_str(), std::ios::binary);
>>>>>
>>>>>         {
>>>>>           boost::archive::xml_iarchive ia(ifs);
>>>>>           ia >> BOOST_SERIALIZATION_NVP(lst_);
>>>>>         }
>>>>>       }
>>>>>       catch(std::exception & e)
>>>>>       {
>>>>>                       std::cout  << e.what() << std::endl;
>>>>>       }
>>>>>
>>>>>       return 0;
>>>>> }
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Best regards,
>>>>> PangYongQiang
>>>>>
>>>>
>>>>
>>>>
>>>>> _______________________________________________
>>>>> Unsubscribe & other changes:
>>>>> http://lists.boost.org/mailman/listinfo.cgi/boost
>>>
>>>
>>>
>>> _______________________________________________
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>>>
>>
>>
>>
>> --
>> Best regards,
>> PangYongQiang
>>
>
>
>
>> _______________________________________________
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