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A wrapper around the DOM interface of libxml2.
The standard way to use it is as follows:
#include <library/cpp/xml/document/xml-document.h>
...
// open a document
NXml::TDocument xml("filename.xml");
// get a nodeset from an XPath query
NXml::TConstNodes nodes = xml.Root().Nodes("xpath/expression/here");
// iterate over the nodeset
for (size_t i = 0; i < nodes.size(); ++i) {
using namespace NXml;
TConstNode& node = nodes[i];
// query node
TString name = node.Name();
TString lang = node.Attr<TString>("lang");
TString text = node.Value<TString>();
TConstNode child = node.GetFirstChild("");
// edit node
TNode node = child.ConstCast();
node.DelAttr("id");
node.SetAttr("x", 2);
node.SetValue(5);
node.AddText(" apples");
}
// edit documents with copy-paste
NXml::TDocument xml2("<xpath><node/></xpath>", NXml::TDocument::String);
NXml::TNode place = xml2.Root().Node("xpath/node");
// copy node's subtree from one document to another
place.AddChild(xml.Root());
// save (render) single element
TString modifiedNode = place.ToString();
// save whole document with optional encoding
TString modifiedDoc = xml2.ToString("ISO-8559-1");
See xml-document_ut.cpp for more examples.
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