XML: xmlSearchNs – R documentation

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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.

Author(s)

Duncan Temple Lang

References

libxml2

Examples

txt = '<top xmlns:r="http://www.r-project.org"><section><bottom/></section></top>'

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

XML

Tools for Parsing and Generating XML Within R and S-Plus

v3.99-0.10

BSD_3_clause + file LICENSE

Authors

CRAN Team [ctb, cre] (de facto maintainer since 2013), Duncan Temple Lang [aut] (<https://orcid.org/0000-0003-0159-1546>), Tomas Kalibera [ctb]

Initial release