to_element: add trait to convert a Node to a Element

src/lib.rs

@@ -28,6 +28,7 @@ mod options;
 mod printer;
 mod reader;
 mod sixbit;
+mod to_element;
 mod value;
 mod writer;
 
@@ -47,6 +48,7 @@ pub use node::{ExtraNodes, Node, NodeCollection};
 pub use options::Options;
 pub use de::from_bytes;
 pub use ser::to_bytes;
+pub use to_element::ToElement;
 pub use value::Value;
 pub use writer::{Writer, Writeable};
 

src/to_element.rs

@@ -0,0 +1,49 @@
+use minidom::Element;
+
+use node::Node;
+use value::Value;
+
+pub trait ToElement {
+  fn to_element(&self) -> Element;
+}
+
+impl ToElement for Node {
+  fn to_element(&self) -> Element {
+    let mut elem = Element::bare(self.key());
+
+    if let Some(value) = self.value() {
+      elem.set_attr("__type", value.standard_type().name);
+
+      match value {
+        Value::String(value) => {
+          elem.append_text_node(value.as_str());
+        },
+        Value::Array(_, values) => {
+          elem.set_attr("__count", values.len());
+
+          let value = Value::array_as_string(values);
+          elem.append_text_node(value);
+        },
+        value => {
+          let value = value.to_string();
+          elem.append_text_node(value);
+        },
+      }
+    }
+
+    if let Some(attributes) = self.attributes() {
+      for (key, value) in attributes {
+        elem.set_attr(key.as_str(), value.as_str());
+      }
+    }
+
+    if let Some(children) = self.children() {
+      for child in children {
+        let child = child.to_element();
+        elem.append_child(child);
+      }
+    }
+
+    elem
+  }
+}