index.js

/*
 * hexo-migrator-joomla
 * https://github.com/welksonramos/hexo-migrator-joomla
 *
 * Copyright (c) 2015-present, Welkson Ramos
 * Licensed under the MIT license.
 */

'use strict';

const xml2js = require('xml2js');
const async = require('async');
const entities = require('entities');
const TurndownService = require('turndown');
const request = require('request');
const file = require('fs');

const tdS = new TurndownService({});

hexo.extend.migrator.register('joomla', (args, callback) => {
  const source = args._.shift();

  if (!source){
    const help = [
      `Usage: hexo migrate joomla <source>,
      For more help, you can check the docs: http://hexo.io/docs/migration.html`
    ];

    console.log(help.join('\n'));
    return callback();
  }

  const log = hexo.log;
  const post = hexo.post;

  log.i('Analyzing %s...', source);

  async.waterfall([
    function(next){
      // URL regular expression from: http://blog.mattheworiordan.com/post/13174566389/url-regular-expression-for-links-with-or-without-the
      if (source.match(/((([A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[.\!\/\\w]*))?)/)){

        request(source, (err, res, body) => {
          if (err) throw err;
          if (res.statusCode == 200) next(null, body);
        });
      } else {
        file.readFile(source, next);
      }
    },

    function(content, next){
      xml2js.parseString(content, next);
    },

    function(xml, next){
      let count = 0;

      async.each(xml.j2xml.content, (item, next) => {

        if (!item){
          return next();
        }

        let title = item.title;
        let id = item.id;
        let slug = item.alias;
        let date = item.created;
        let category = item.catid;
        let excerpt = item.introtext;
        let content = item.fulltext;
        let status = item.state;
        let categories = [];
        let tags = [];

        if (!title && !slug) return next();

        title = entities.decodeHTML(title),
        date = entities.decodeHTML(date),
        excerpt = entities.decodeHTML(excerpt),
        content = entities.decodeHTML(content),
        count++;

        if (typeof content !== 'string' || typeof title !== 'string') content = ' ';

        const data = {
          title: title,
          categories: category || 'uncategorized',
          id: +id,
          date: date,
          content: tdS.turndown(excerpt).replace('/\r\n/g', '\n') + tdS.turndown(content).replace('/\r\n/g', '\n'),
          layout: status === '0' ? 'draft' : 'post',
        };

        if (slug) data.slug = slug;

        log.i('Found: %s', title);
        post.create(data, next);
      }, err => {
        if (err) return next(err);

        log.i('%d posts migrated with success! ✔', count);
      });
    }
  ], callback);
});