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.

Usage

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.

Value

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

Duncan Temple Lang

See also

parseDTD, dtdEntity, dtdElement,

Examples

 dtdFile <- system.file("exampleData", "foo.dtd", package="XML")
 foo.dtd <- parseDTD(dtdFile)
#> Warning: 'parseDTD' no longer works, sorry.
 
  # Look for entities.
 xmlContainsEntity("foo", foo.dtd)
#> Warning: 'xmlContainsEntity' is deprecated and will be removed soon. Please contact maintainer('XML') if you would like it to keep working.
#> [1] FALSE
 xmlContainsEntity("bar", foo.dtd)
#> Warning: 'xmlContainsEntity' is deprecated and will be removed soon. Please contact maintainer('XML') if you would like it to keep working.
#> [1] FALSE

  # Now look for an element
 xmlContainsElement("record", foo.dtd)
#> Warning: 'xmlContainsElement' is deprecated and will be removed soon. Please contact maintainer('XML') if you would like it to keep working.
#> [1] FALSE