voc-cli/bin/dic/yahoo.js

download and play English vocabularies' audio via command line

'use strict';

var _async_ = require('co').wrap;
var fetch = require('node-fetch');
var cheerio = require('cheerio');
var normalize = require('../lib/normalize');
var urlformat = require('url').format;

module.exports = _async_(regeneratorRuntime.mark(function _callee(word) {
  var url, res, html, $, term, msg, err, set, list, _err;

  return regeneratorRuntime.wrap(function _callee$(_context) {
    while (1) {
      switch (_context.prev = _context.next) {
        case 0:
          word = normalize(word);

          url = 'https://tw.dictionary.search.yahoo.com/search' + urlformat({
            query: {
              fr2: 'dict',
              p: word
            }
          });
          _context.next = 4;
          return fetch(url, { timeout: 10 * 1000 });

        case 4:
          res = _context.sent;

          if (!(res.status !== 200)) {
            _context.next = 7;
            break;
          }

          throw new Error('request to ' + url + ' failed, status code = ' + res.status + ' (' + res.statusText + ')');

        case 7:
          _context.next = 9;
          return res.text();

        case 9:
          html = _context.sent;
          $ = cheerio.load(html);

          // check the word from title

          term = $('#term').text().trim().toLowerCase().replace(/·/g, '');

          if (!(term !== word)) {
            _context.next = 18;
            break;
          }

          msg = '\'' + word + '\' is not found from yahoo';

          if (term !== '') {
            msg += '. Do you mean the word \'' + term + '\' ?';
          }

          err = new Error(msg);

          err.code = 'ENOENT';
          throw err;

        case 18:
          set = {};

          JSON.parse($('#iconStyle.tri').text()).sound_url_1.forEach(function (item) {
            if ('mp3' in item) {
              set[item.mp3] = true;
            }
          });

          list = Object.keys(set);

          if (!(list.length === 0)) {
            _context.next = 25;
            break;
          }

          _err = new Error('\'' + word + '\' has no audio from yahoo');

          _err.code = 'ENOENT';
          throw _err;

        case 25:

          // show all the audio url
          if (list.length > 1) {
            list.forEach(function (audio, i) {
              console.log(i + 1 + '. ' + audio);
            });
          }

          // return the first audio from list
          return _context.abrupt('return', list[0]);

        case 27:
        case 'end':
          return _context.stop();
      }
    }
  }, _callee, this);
}));