85 lines
2.6 KiB
JavaScript
Executable File
85 lines
2.6 KiB
JavaScript
Executable File
#!/usr/bin/env node
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var N3 = require('n3'),
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fs = require('fs'),
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N3Util = N3.Util,
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http = require('http'),
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fs = require('fs');
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var validateStream = function (turtleStream) {
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var parser = N3.Parser();
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var errorCount = 0, warningCount = 0;
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var regexp = {
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'dateTime' : /^(-?(?:[1-9][0-9]*)?[0-9]{4})-(1[0-2]|0[1-9])-(3[0-1]|0[1-9]|[1-2][0-9])?T(2[0-3]|[0-1][0-9]):([0-5][0-9]):([0-5][0-9])(\.[0-9]+)??(Z|[+-](?:2[0-3]|[0-1][0-9]):[0-5][0-9])?$/,
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'double' : /[-+]?\d*([.]\d+)?/,
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'float' : /[-+]?\d*[.]\d+/,
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'int' : /^[-+]?(0|[1-9]\d*)$/
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};
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parser.parse(turtleStream, function(error, triple, prefixes) {
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if (error) {
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console.log(error);
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errorCount++;
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}
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if (triple) {
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if (N3Util.isLiteral(triple.object)) {
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var value = N3Util.getLiteralValue(triple.object);
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var type = N3Util.getLiteralType(triple.object);
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type = type.replace('http://www.w3.org/2001/XMLSchema#', '');
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if (regexp[type] && !regexp[type].test(value)) {
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console.log('WARNING: xsd:', type, 'does not validate for literal. {', triple.subject, triple.predicate, triple.object, '}');
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warningCount++;
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}
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}
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} else {
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console.log('Validation done:', errorCount, 'errors and', warningCount ,'warnings found.');
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}
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});
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};
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var help = function () {
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// In all other cases, let's help the user and return some help
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console.log('RDF NTriples/Turtle validator using Ruben Verborgh\'s N3 nodejs library');
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console.log('© 2014 - MMLab - Ghent University - iMinds');
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console.log('Source code: https://github.com/MMLab/TurtleValidator');
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console.log('');
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console.log('Examples:');
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console.log('');
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console.log(' $ ttl <path-to-file>');
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console.log(' $ curl http://data.linkeddatafragments.org/dbpedia -H "accept: text/turtle" | ttl');
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console.log(' $ ttl http://triples.demo.thedatatank.com/demo.ttl');
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};
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if (process.argv[2] && (process.argv[2] === "-h" || process.argv[2] === "--help") ) {
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help();
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} else if (process.argv.length === 2) {
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// Use stdio as an input stream
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validateStream(process.stdin);
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} else if (process.argv.length === 3 ) {
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// Create a stream from the file, whether it is a local file or a http stream
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var filename = process.argv[2];
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fs.exists(filename, function (exists) {
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if (exists) {
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try{
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validateStream(fs.createReadStream(filename));
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} catch ( e ) {
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console.error(e);
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}
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} else {
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try{
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validateStream(http.get(process.argv[2]));
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} catch ( e ) {
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console.error(e);
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}
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}
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});
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} else {
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help();
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}
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