xmlContainsEntity function

Checks if an entity is defined within a DTD.

A DTD contains entity and element definitions. These functions test whether a DTD contains a definition for a particular named element or entity.

xmlContainsEntity(name, dtd)
xmlContainsElement(name, dtd)

Arguments

• name: The name of the element or entity being queried.
• dtd: The DTD in which to search for the entry.

Details

See parseDTD for more information about DTDs, entities and elements.

Returns

A logical value indicating whether the entry was found in the appropriate list of entitiy or element definitions.

References

https://www.w3.org/XML/, http://www.jclark.com/xml/, https://www.omegahat.net

Author(s)

Duncan Temple Lang

See Also

parseDTD, dtdEntity, dtdElement,

Examples

dtdFile <- system.file("exampleData", "foo.dtd", package="XML")
 foo.dtd <- parseDTD(dtdFile)
 
  # Look for entities.
 xmlContainsEntity("foo", foo.dtd)
 xmlContainsEntity("bar", foo.dtd)

  # Now look for an element
 xmlContainsElement("record", foo.dtd)