Re: [Boost-users] boost serialization 1.32

From: Filip Peters (filippeters_at_[hidden])
Date: 2005-07-07 11:59:22

Hi,

seems you're mixing binary and text?
you're reading in text in your example...

>     //WRITE
>     std::ofstream ofsb("filenameb");
>     boost::archive::binary_oarchive ob(ofsb);

>     //READBACK
>     std::ifstream ifs(fname.c_str(),
> std::ios::binary);
>     boost::archive::text_iarchive ia(ifs);

Also, I had to do 
std::ofstream ofsb("filenameb", std::ios::binary);
before it would work correctly.

(I started using boost/serialization this week and
also had some issues at first (with vc7.1), but it's
working nicely now)
The serialisation lib is quite nice!

Filip Peters.

 
--- luke <lux_at_[hidden]> wrote:

> Dear list
> 
> I try to read back a serialized structure (binary).
> It works fine with gcc 3.3 on linux but I get
> problems
> with visualstudio 7.1. reading back the file.
> 
>   > wrong input data
>   > uncaught exception at: ar >> new_strucutre;
> 
> Are there some hints/ experiences with Visualstudio
> ??
> Below I have a short code abstraction what I'm doing
> basically.
> 
> Thanks
>   luke
> 
> ==== snip ====
> 
>   struct foo
>   {
>     int posx;
>     int posz;
> 
>     friend class boost::serialization::access;
>     template<class Archive>
>      void serialize(Archive & ar, const unsigned int
> version)
>      {
>        ar & posx;
>        ar & posz;
>      }
>   };
> 
>   class Manager
>   {
>     public:
>      Manager();
>      ~Manager();
> 
>     std::vector<foo> fool_;
> 
>     friend class boost::serialization::access;
>     template<class Archive>
>      void serialize(Archive & ar, const unsigned int
> version)
>      {
>        ar & fool_;
>      }
> 
>     private:
> 
>   };
> 
>   struct test
>   {
>     int id;
>     int age;
>     Manager manager;
> 
>     friend class boost::serialization::access;
>     template<class Archive>
>      void serialize(Archive & ar, const unsigned int
> version)
>      {
>        ar & id;
>        ar & age;
>        ar & manager;
>      }
> 
>   };
> 
>   int main()
>   {
>     //CREATE
>     test test_foo;
>     test_foo.id = 1;
>     test_foo.age = 2;
>     foo new_foo;
>     new_foo.posx = 100;
>     new_foo.posz = 110;
>     test_foo.manager.fool_.push_back(new_foo);
> 
>     //WRITE
>     std::ofstream ofsb("filenameb");
>     boost::archive::binary_oarchive ob(ofsb);
>     ob << test_foo;
>     ofsb.close();
> 
>     //READBACK
>     std::ifstream ifs(fname.c_str(),
> std::ios::binary);
>     boost::archive::text_iarchive ia(ifs);
> 
>     ia >> new_test;  // EXCEPTION
> 
>     ifs.close();
> 
>   }
> 
> ==============
> 
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>
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> 

                
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