R: Remove redundant namespaces on an XML document

xmlCleanNamespaces {XML} | R Documentation

## Remove redundant namespaces on an XML document

### Description

This is a convenience function that removes redundant repeated namespace definitions in an XML node. It removes namespace definitions in nodes where an ancestor node also has that definition. It does not remove unused namespace definitions.

This uses the `NSCLEAN` option for `xmlParse`

### Usage

    xmlCleanNamespaces(doc, options = integer(), out = docName(doc), ...)

### Arguments

`doc` | either the name of an XML documentor the XML content itself, or an already parsed document
`options` | options for the XML parser. `NSCLEAN` is added to this.
`...` | additional arguments passed to `xmlParse`
`out` | the name of a file to which to write the resulting XML document, or an empty character vector or logical value `FALSE` to avoid writing the new document.

### Value

If the new document is written to a file, the name of the file is returned. Otherwise, the new parsed XML document is returned.

### Author(s)

Duncan Temple Lang

### References

libxml2 documentation http://xmlsoft.org/html/libxml-parser.html

### See Also

`xmlParse`

### Examples

    f = system.file("exampleData", "redundantNS.xml", package = "XML")
    doc = xmlParse(f)
    print(doc)
    newDoc = xmlCleanNamespaces(f, out = FALSE)

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