XML (version 3.99-0.5)

xmlSearchNs: Find a namespace definition object by searching ancestor nodes

Description

This function allows one to search an XML tree from a particular node and find the namespace definition for a given namespace prefix or URL. This namespace definition can then be used to set it on a node to make it the effective namespace for that node.

Usage

xmlSearchNs(node, ns, asPrefix = TRUE, doc = as(node, "XMLInternalDocument"))

Arguments

node

an XMLInternaElementNode

ns

a character string (vector of length 1). If asPrefix is TRUE, this is the namespace alias/prefix. If asPrefix is FALSE, this is the URL of the namespace definition

asPrefix

a logical value. See ns.

doc

the XML document in which the node(s) are located

Value

An object of class XMLNamespaceRef.

References

libxml2

See Also

newXMLNode

Examples

# NOT RUN {
 txt = '<top xmlns:r="http://www.r-project.org"><section><bottom/></section></top>'

 doc = xmlParse(txt)
 bottom = xmlRoot(doc)[[1]][[1]]
 xmlSearchNs(bottom, "r")
# }