Convert WordPress exported XML to Jekyll Posts

wordpress2jekyll.js

var parseString = require('xml2js').parseString;
var fs = require("fs");
var path = require("path");

var targetPath = "/home/laobubu/jekyll/_posts";
var wpXMLFile = "wordpress.xml";

try {
    fs.mkdirSync(targetPath);
} catch (er){}

function convertContent(str){
    var rtn = str;
    rtn = rtn.replace(/class="align(\w+)"/g, 'align="$1"');
    //rtn = rtn.replace(/\n\n([^\n]+)\n\n/gm, '<p>$1</p>');
    rtn = rtn.replace(/(\r\n|\n)\1/gm, '<br><br>');
    return rtn;
}

function extract1(arr, key) {
    var rtn = [];
    for (var i = arr.length; i--; ) {
        rtn[i] = arr[i][key]
    }
    return rtn;
}

function safeStr(str) {
    var q = str.toString();
    var s = q.replace(/(["])/g,"\\$1");
    return '"' + s + '"';
}

function writeFile(o) {
    if (o.layout != 'post') 
        return;
    
    var fn = o.time.getFullYear() + '-' + (o.time.getMonth() + 1) + '-' + o.time.getDate() + '-' + o.id + ".html";
    var data = [
        '---',
        'layout: ' + o.layout,
        'title: ' + safeStr(o.title),
        'date: ' + (o.time.getFullYear() + '-' + (o.time.getMonth() + 1) + '-' + o.time.getDate() + ' ' +
                    o.time.getHours() + ':' + o.time.getMinutes() + ':' + o.time.getSeconds()),
        'permalink: /' + o.id,
        'categories: ' + JSON.stringify(o.categories),
        'tags: ' + JSON.stringify(o.tags),
        'published: ' + o.published,
        '---',
        convertContent(o.content)
    ].join('\n');
    
    fn = path.join(targetPath, fn);
    fs.writeFile(fn, data);
    
    console.log('Proceed: ' + o.title);
}

fs.readFile(wpXMLFile,"utf-8",function(err, data) {
    parseString(data, function (err, result) {
        var items = result.rss.channel[0].item;
        for (var i=0;i<items.length;i++) {
            var type = items[i]['wp:post_type'];
            var title = items[i]['title'];
            var author = items[i]['dc:creator'][0];
            var time = new Date(items[i]['pubDate']);
            var id = items[i]['wp:post_id'];    //or wp:post_name if you want slug
            var content = items[i]['content:encoded'][0];
            var categories = [];
            var tags = [];
            var published = items[i]['wp:status'] == 'publish';
            for (var j in items[i]['category']) {
                var itype = items[i]['category'][j].$.domain;
                var idata = items[i]['category'][j]._;
                if (itype == 'category') categories.push(idata);
                if (itype == 'post_tag') tags.push(idata);
            }
            
            writeFile({
                layout: type,
                title: title,
                author: author,
                time: time,
                id: id,
                content: content,
                categories: categories,
                tags: tags,
                published: published
            });
        }
    }); 
})