var N3 = require('n3'), fs = require('fs'), N3Util = N3.Util; if (!process.argv[2]){ console.log('RDF N3/NTriples/Turtle file validator'); console.log('Usage: $ node N3Validator.js '); process.exit(1); } console.log('Validating '+process.argv[2]); var parser = N3.Parser(), turtleStream = fs.createReadStream(process.argv[2]); var errorCount = 0; parser.parse(turtleStream, function (error, triple, prefixes){ if (error){ console.log(error); errorCount++; } if (triple) { if (N3Util.isLiteral(triple.object)){ var value = N3Util.getLiteralValue(triple.object); var type = N3Util.getLiteralType(triple.object); type = type.replace('http://www.w3.org/2001/XMLSchema#',''); switch(type) { case 'float': case 'double': if (!value.match(/[-+]?\d*[.]\d+/)){ console.log('WARNING: datatype does not validate for value ' + value); console.log(triple.subject, triple.predicate, triple.object, '.'); } break; case 'int': if (!value.match(/[-+]?\d*/)){ console.log('WARNING: int does not validate for value ' + value); console.log(triple.subject, triple.predicate, triple.object, '.'); } } } } else { console.log("Validation done: "+ errorCount + " errors found."); } });