Swish.RDF.Parser.Turtle

This Module implements a Turtle parser, returning a new RDFGraph consisting of triples and namespace information parsed from the supplied input string, or an error indication.

REFERENCES:

• "Turtle, Terse RDF Triple Language", W3C Working Draft 09 August 2011 (http://www.w3.org/TR/2011/WD-turtle-20110809/), http://www.w3.org/TR/turtle/

NOTES:

• At present there is a lot of overlap with the N3 Parser.
• The parser needs to be updated to the latest working draft (10 July 2012, http://www.w3.org/TR/2012/WD-turtle-20120710/#sec-changelog).
• Strings with no language tag are converted to a LitTag not a TypedLitTag with a type of xsd:string (e.g. see http://www.w3.org/TR/2011/WD-turtle-20110809/#terms).
• If the URI is actually an IRI (Internationalized Resource Identifiers) then the parser will fail since parseURI fails.

Documentation

type ParseResult = Either String RDFGraph

The result of a parse, which is either an error message or a graph.

parseTurtle

Arguments

:: Text

input in N3 format.

-> Maybe URI

optional base URI

-> ParseResult

Parse a string with an optional base URI.

Unlike parseN3 we treat the base URI as a URI and not a QName.

parseTurtlefromText

Arguments

:: Text

input in N3 format.

-> ParseResult

Parse as Turtle (with no real base URI).

See parseTurtle if you need to provide a base URI.