ineter/lib/ineter.js

Web scraping INETER map of earthquakes

var crypto = require('crypto');
var request = require('request');

var url = 'http://webserver2.ineter.gob.ni/geofisica/sis/events/nicaragua.local';

var Ineter = function() {
};

Ineter.prototype.earthquakes = function(callback) {
  var items = [];
  request.get({
    url:url,
    encoding:'binary'
  },
  function (error, response, body) {
    if (error) {
      callback(items);
    }
    else {
      if (response.statusCode !== 200) {
        callback(items);
      }
      else{
        var lines = body.trim().split(/\r?\n/);
        lines.pop();
        var regEx = /(\d{2}\/\d{2}\/\d{2})\s{1,}(\d{2}:\d{2}:\d{2})\s{1,}(\d{1,}.\d{1,}[A-Z]{1})\s{1,}(\d{1,}.\d{1,}[A-Z]{1})\s{1,}(\d{1,}.\d{1,})\s{1,}(\d{1,}.\d{1,}[A-Z]{2})\s{1,}(.*)/g;
        lines.forEach(function(line) {
          var parseLine = line.replace(regEx, '$1|$2|$3|$4|$5KM|$6|$7');
          var parts = parseLine.split('|');
          var obj = {
            'id': crypto.createHash( 'md5' ).update( line ).digest( 'hex'),
            'date': parts[0].replace(/(\d{2})\/(\d{2})\/(\d{2})/, new Date().getFullYear() + '/$2/$3' ),
            'time': parts[1],
            'latitude': parts[2],
            'longitude': parts[3],
            'depth': parts[4],
            'magnitude': parts[5],
            'place': parts[6].trim()
          };
          items.push( obj );
        });
        callback( items );
      }
    }
  });

};

module.exports = Ineter;