This coerces a regular R-based XML node (i.e. not an internal C-level
node) to a form that can be inserted into a flat tree, i.e.
one that stores the nodes in a non-hierarchical manner.
It is thus used in conjunction with
env fields to the
node and specializes the class by prefixing
to the class attribute.
This is not used very much anymore as we use the internal nodes for most purposes.
asXMLTreeNode(node, env, id = get(".nodeIdGenerator", env)(xmlName(node)), className = "XMLTreeNode")
the original XML node
the identifier for the node in the flat tree. If this is not specified, we consult the tree itself and its built-in identifier generator. By default, the name of the node is used as its identifier unless there is another node with that name.
a vector of class names to be prefixed to the existing class vector of the node.
An object of class
className, i.e. by default
Duncan Temple Lang
txt = '<foo a="123" b="an attribute"><bar>some text</bar>other text</foo>' doc = xmlTreeParse(txt) class(xmlRoot(doc)) as(xmlRoot(doc), "XMLInternalNode")
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