UPD I've found answer to "formatting" issue here, so I remove this part of the question, please read updated question:
I need to write xml to file system on c++. I've learned this titorial. In the tutorial pretty simple xml is used. My xml is more complicated and I don't know how to modify the code to produce it. That's what I've code:
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/xml_parser.hpp>
//<Root>
// <Set Name="1">
// <Field Name="Hello 1"/>
// <Field Name="World 1"/>
// </Set>
// <Set Name="2">
// <Field Name="Hello 2"/>
// <Field Name="World 2"/>
// </Set>
//</Root>
int main(int argc, char* argv[])
{
using boost::property_tree::ptree;
ptree pt;
pt.put("Root.Set.Field", "Hello");
pt.put("Root.Set.Field", "World");
boost::property_tree::xml_writer_settings<char> settings('\t', 1);
write_xml("testXml.xml", pt, std::locale(), settings);
return 0;
}
Output is:
<?xml version="1.0" encoding="utf-8"?>
<Root>
<Set>
<Field>World</Field>
</Set>
</Root>
How can I modify my program to produce desired xml, in particular:
true
like that pt.put("Root.Set.Field", "Hello", true);
is compile time errorName="Hello 1"
) According to doc It seems I should add them to "subkeys", but how?upd i've tried that: pt.put("Root.Set.Field.xmlattr.Name", "Hello 1");
expecting to see that <Field Name="Hello 1"/>
but still doesn't work. Waiting for someone who can share correct syntax.
upd2 bingo, this syntax works, i will continue try to print desired xml tomorrow. pt.put("Root.Set.Field.<xmlattr>.Name", "Hello 1");
This answers the last question - how to use several nodes with the same name. Finally I wrote such program that solves the problem
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/xml_parser.hpp>
//<Root>
// <Set Name="1">
// <Field Name="Hello 1"/>
// <Field Name="World 1"/>
// </Set>
// <Set Name="2">
// <Field Name="Hello 2"/>
// <Field Name="World 2"/>
// </Set>
//</Root>
int main(int argc, char* argv[])
{
using boost::property_tree::ptree;
ptree pt;
boost::property_tree::ptree rootNode;
boost::property_tree::ptree setNode1;
boost::property_tree::ptree setNode2;
boost::property_tree::ptree fieldNode1;
boost::property_tree::ptree fieldNode2;
boost::property_tree::ptree fieldNode3;
boost::property_tree::ptree fieldNode4;
fieldNode1.put("<xmlattr>.Name", "Hello 1");
fieldNode2.put("<xmlattr>.Name", "World 1");
fieldNode3.put("<xmlattr>.Name", "Hello 2");
fieldNode4.put("<xmlattr>.Name", "World 2");
setNode1.add_child("Field", fieldNode1);
setNode1.add_child("Field", fieldNode2);
setNode2.add_child("Field", fieldNode3);
setNode2.add_child("Field", fieldNode4);
setNode1.put("<xmlattr>.Name", "1");
setNode2.put("<xmlattr>.Name", "2");
rootNode.add_child("Set", setNode1);
rootNode.add_child("Set", setNode2);
pt.add_child("Root", rootNode);
boost::property_tree::xml_writer_settings<char> settings('\t', 1);
write_xml("testXml.xml", pt, std::locale(), settings);
return 0;
}
Output:
<?xml version="1.0" encoding="utf-8"?>
<Root>
<Set Name="1">
<Field Name="Hello 1"/>
<Field Name="World 1"/>
</Set>
<Set Name="2">
<Field Name="Hello 2"/>
<Field Name="World 2"/>
</Set>
</Root>