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

Subject: Re: [Boost-users] [serialization] removing excess XML tags
From: Paul Heil (paul.heil_at_[hidden])
Date: 2009-02-05 15:35:55

On Thu, Feb 5, 2009 at 2:16 PM, John Pretz <jpretz_at_[hidden]> wrote:

> 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;
>> }
>> ------------------------------------------------------------------------
>>
>> _______________________________________________
>> Boost-users mailing list
>> Boost-users_at_[hidden]
>> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>>
>
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>

Unfortunately, the "no_header" flags turns off the xml version header which
I actually do need to keep:
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

-PaulH