intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 42 insertions, 0 deletions

diff --git a/library/cpp/xml/document/README b/library/cpp/xml/document/README
new file mode 100644
index 00000000000..b2649523d8f
--- /dev/null
+++ b/library/cpp/xml/document/README
@@ -0,0 +1,42 @@
+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.