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 Candidate Recommendation 19 February 2013 (<http://www.w3.org/TR/2013/CR-turtle-20130219/L), http://www.w3.org/TR/turtle/

NOTES:

• Prior to version 0.9.0.4, the parser followed the W3C Working Draft 09 August 2011 (http://www.w3.org/TR/2011/WD-turtle-20110809/)
• 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.
• The current (August 2013) Turtle test suite from http://www.w3.org/2013/TurtleTests/ passes except for the four tests with non-ASCII local names, namely: localName_with_assigned_nfc_bmp_PN_CHARS_BASE_character_boundaries, localName_with_assigned_nfc_PN_CHARS_BASE_character_boundaries, localName_with_nfc_PN_CHARS_BASE_character_boundaries, and localName_with_non_leading_extras.

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.