Re: [Boost-users] [serialization] removing excess XML tags

Subject: Re: [Boost-users] [serialization] removing excess XML tags
From: John Pretz (jpretz_at_[hidden])
Date: 2009-02-05 15:16:30

Paul,

You can turn off the wrapping boost_serialization tag by giving your 
archive the boost::archive::no_header switch.  There's a 
boost::archive::no_tracking switch, but it doesn't seem to turn off the 
'class_id' and 'tracking_level' stuff.

John

#include <fstream>
#include <iostream>
#include <boost/archive/xml_oarchive.hpp>

class MyClass
{
private:
    friend class boost::serialization::access;

    template<class Archive>
    void serialize(Archive &ar, const unsigned int version){};

public:
    MyClass(){};
    friend std::ostream & operator<<(std::ostream &os, const MyClass &gp);
    virtual ~MyClass(){};
};

int main( int argc, char** argv[] )
{
    MyClass mc;

//    std::ofstream ofs("MyFile.xml");
    boost::archive::xml_oarchive oa(std::cout,boost::archive::no_header);
    oa << boost::serialization::make_nvp( "MYTAG", mc );

    return 0;
}

Paul Heil wrote:
> I'd like to use the boost::serialization library to generate XML that 
> must be read by a third party application. Unfortunately, this 
> application does not like the extra stuff that the serialization 
> library generates.
>
> The code below generates XML that looks like this:
>     <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
>     <!DOCTYPE boost_serialization>
>     <boost_serialization signature="serialization::archive" version="5">
>     <MYTAG class_id="0" tracking_level="0" version="0"></MYTAG>
>     </boost_serialization>
>
> What I need is XML that looks more like this:
>     <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
>     <MYTAG></MYTAG>
>
>
> What can I do to eliminate the extra stuff?
>
> Thanks,
> PaulH
>
> class MyClass
> {
> private:
>     friend class boost::serialization::access;
>
>     template<class Archive>
>     void serialize(Archive &ar, const unsigned int version){};
>
> public:
>     MyClass(){};
>     friend std::ostream & operator<<(std::ostream &os, const MyClass &gp);
>     virtual ~MyClass(){};
> };
>
> int main( int argc, _TCHAR* argv[] )
> {
>     MyClass mc;
>
>     std::ofstream ofs("MyFile.xml");
>     boost::archive::xml_oarchive oa(ofs);
>     oa << boost::serialization::make_nvp( "MYTAG", mc );
>
>     return 0;
> }
> ------------------------------------------------------------------------
>
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