Extractor.js

var GooDataExtractor = function () {};
 
GooDataExtractor.prototype.extract = function (key, delimiters, target, callback) {
    this.mineData(key, 1, function (data) { 
    	delimiters = delimiters.replace(' ', '');
		delimiters = delimiters.split(',');

		console.log(data);
		callback(GooDataExtractor.prototype.parseContentToArray(delimiters, data), target);
	});
}
 
GooDataExtractor.prototype.parseContentToArray = function (delimiters, data) {
	var parsed = new Array();

    parsed[delimiters[0] + 'Posts-B2' + delimiters[1]] = 'Data 1';
    parsed[delimiters[0] + 'Posts-B3' + delimiters[1]] = 'Data 2';
 
    return parsed;
}

GooDataExtractor.rawData = '';
GooDataExtractor.sheetNumber = 1;
 
GooDataExtractor.prototype.mineData = function (key, sheet, callback) {
	var http = require('http');

	var state = '';
	var rawData;

	var link = '/feeds/cells/' + key + '/' + sheet + '/public/values';
 
	var options = {
		host: 'spreadsheets.google.com',
		port: 80,
		path: link
	};

	http.get(options, function(res) {
		res.setEncoding('utf-8');

		res.on('data', function (chunk) {
			rawData += chunk;
		});
	 
		res.on('end', function () {
			if(rawData.length < 60) {
				if(GooDataExtractor.rawData.substring(0, 9) == 'undefined') {
					GooDataExtractor.rawData = GooDataExtractor.rawData.substring(9, GooDataExtractor.rawData.length);
				}
				console.log(GooDataExtractor.rawData);
				callback(GooDataExtractor.rawData);
			} else {
				GooDataExtractor.rawData += rawData;
				GooDataExtractor.sheetNumber++;
				GooDataExtractor.prototype.mineData(key, GooDataExtractor.sheetNumber);
				rawData = '';
			}
		});
	})
}

module.exports = GooDataExtractor;