ontola / n-quads-parser

Fast, tiny, pure-js canonical n-quads & n-triples parser

NQuads parser

This is a basic, but fast pure-js n-quads/triples parser. It has no dependencies to node and can be run in the browser.

Installation

yarn add n-quads-parser @ontologies/core

npm i n-quads-parser @ontologies/core

Usage

This was written as a faster n-quads parser for link-lib and designed to work with rdflib.js.

The parser is already integrated into link-lib which can also consume linked-delta payloads in addition to plain n-quads.

If you're looking for a quick and easy way to build linked-data based RDF applications, check out link-redux.

Plain javascript:

import rdf from '@ontologies/core';

// Can also be IndexedFormula from rdflib.js or RDFStore from link-lib.
const store = {
    rdfFactory: rdf,
    quads: [],
    
    add(s, p, o, g) {
      this.quads.push(rdf.quad(s, p, o, g));
    }
}

const parser = new NQuadsParser(store);

fetch(url)
  .then((req) => req.text())
  .then((body) => parser.loadBuf(body));

// The quads should be loaded into the store.

TODO:

• Implement the whatwg streams interface
• Add the spec test suite

n-quads-parser's Issues

Blank node graph terms are not parsed

Hey! Just a heads up that this library doesn't parse blank node graph terms - in index.ts#L210 it only checks if the graph term is a named node, and if not, it sets graph to the default graph term.

I'm not using this for parsing or anything, I just thought I'd open the issue in case you care.

langstring datatype iri is wrong

Should be <rdf:langString> / http://www.w3.org/1999/02/22-rdf-syntax-ns#langString but is <xsd:langString>