使用boost::property_tree生成带attribute的xml

这一小篇就算是下篇吧。即用boost::property_tree生成带attribute的xml。

直接看demo code：

#include <iostream>
#include <sstream>
#include <boost/property_tree/xml_parser.hpp>

using namespace std;

int main(){
	using boost::property_tree::ptree;
    ptree pt;

    ptree tab1;
    ptree tab2;

    tab1.put("attr1", "value1");
    tab1.put("attr1.<xmlattr>.code", "ABC");
    tab1.put("attr2", "value2");

    tab2.put("attr3", "value3");
    tab2.put("attr3.<xmlattr>.code", "XYZ");

    ptree array;
    auto& a = array.add_child("table1", tab1);
    a.put("<xmlattr>.tabid", "1");

    auto& b = array.add_child("table2", tab2);
    b.put("<xmlattr>.tabid", "2");

    pt.put_child("demoxml", array);

    ostringstream oss;
     
    write_xml(oss, pt, xml_writer_settings<char>(' ', 2));

    cout << oss.str() << endl;
    
    return 0;
}

<?xml version="1.0" encoding="utf-8"?>
<demoxml>
  <table1 tabid="1">
    <attr1 code="ABC">value1</attr1>
    <attr2>value2</attr2>
  </table1>
  <table2 tabid="2">
    <attr3 code="XYZ">value3</attr3>
  </table2>
</demoxml>

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