[boost] xml library

From: Wojtek Surowka (wojtek_surowka_at_[hidden])
Date: 2003-08-17 15:45:34

I think that what is still missing in Boost is a library for reading and
writing XML files. I have such a library, though in rather preliminary
state (encodings support is missing, and also not all of XML constructs are
supported). Anyway, I have used it in some projects for e.g. reading and
writing configuration files. For reading, it uses an iterator, a little bit
similar to istream_iterator. For writing, it uses interface similar to
standard streams. Here you have a code presenting the interface of the
library:

void traverse(
    const xml::read_iterator& begin,
    const xml::read_iterator& end,
    const std::string& spaces)
{
    for (xml::read_iterator it = begin; it != end; ++it)
    {
        if (it->type() == xml::element)
        {
            std::cout << spaces << it->str() << "\n";
            traverse(it->begin(),it->end(),spaces+" ");
        }
    }
} 

int main()
{
    // test read_iterator, the output is: 
    // root
    //  a
    std::istringstream iss("<root><a atr='value'> b </a></root>");
    traverse(xml::read_iterator(iss),xml::read_iterator(),"");

    // test ostream, the output is: 
    // <a>
    //  <b ee='f'/>
    // </a>
    xml::ostream xos(std::cout);
    xos << xml::tag("a") << xml::down <<
        xml::tag("b") << xml::attr("ee","f") <<
        xml::up;
} 

If there will be an interest, I can submit the library code and extend it. 
Regards,
Wojtek Surówka