intraday/lib/intraday.js

Fetch intraday stock data from yahoo

// Generated by CoffeeScript 1.6.3
(function() {
  var KEY_RE, clean, csv, filt, http, toObj;

  http = require('http');

  csv = require('csv');

  filt = function(value, index, array) {
    return value.length === 6;
  };

  toObj = function(list, values) {
    var i, j, res, ret, _i, _j, _ref, _ref1;
    ret = [];
    for (i = _i = 0, _ref = values.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
      res = {};
      for (j = _j = 0, _ref1 = list.length; 0 <= _ref1 ? _j < _ref1 : _j > _ref1; j = 0 <= _ref1 ? ++_j : --_j) {
        res[list[j]] = values[i][j];
      }
      ret.push(res);
    }
    return ret;
  };

  KEY_RE = /:(.+)$/;

  clean = function(key) {
    var match;
    match = key.match(KEY_RE);
    if (match && match.length === 2) {
      key = match[1].toLowerCase();
    }
    return key;
  };

  module.exports = function(symbol, numDays, cb) {
    var req, url;
    if (arguments.length === 2) {
      return module.exports(arguments[0], 1, arguments[1]);
    }
    url = "http://chartapi.finance.yahoo.com/instrument/1.0/" + symbol + "/chartdata;type=quote;range=" + numDays + "d/csv";
    req = http.get(url, function(res) {
      if (res.statusCode === 200) {
        csv().from(res).to.array(function(data) {
          var keys, values;
          if (!data) {
            return typeof cb === "function" ? cb('No data', null) : void 0;
          }
          values = data.filter(filt);
          keys = values.shift();
          if (keys == null) {
            return typeof cb === "function" ? cb('Invalid symbol', null) : void 0;
          }
          keys = typeof keys.map === "function" ? keys.map(clean) : void 0;
          return typeof cb === "function" ? cb(null, toObj(keys, values)) : void 0;
        });
      } else {
        if (typeof cb === "function") {
          cb(res.statusCode, null);
        }
      }
      return null;
    });
    req.on('error', function(e) {
      return typeof cb === "function" ? cb(e.message, null) : void 0;
    });
    return null;
  };

}).call(this);