#!/usr/bin/env node

// Parse arguments
var args = process.argv.slice(2);
let strictMode = false;
if (args.length > 1) {
  if (args[0] !== '--strict') {
    console.error('usage: sparql-to-json query.sparql');
    return process.exit(1);
  } else {
    strictMode = true;
    // Shift arguments
    args.shift();
  }
}

var fs = require('fs'),
    SparqlParser = require('../sparql').Parser;

// Parse and display the query
var query = '', source = args[0] ? fs.createReadStream(args[0]) : process.stdin;
source.setEncoding('utf8');
source.on('data', function (data) { query += data; });
source.on('end', function () {
  var parseTree = new SparqlParser({ sparqlStar: !strictMode }).parse(query);
  process.stdout.write(JSON.stringify(parseTree, null, '  ') + '\n');
});