typecho-to-jekyll-and-duoshuo.js

## typecho-to-jekyll-and-duoshuo.js
/**
 * Typecho to Jekyll & DuoShuo
 *
 * @author laobubu.net
 *
 * Usage:
 *  1. run `npm install dateformat`
 *  2. export table `typecho_comments` and `typecho_contents` as two json files. you can do this with PHPMySQLAdmin
 *  3. edit this file, especially line 15 - 20
 *  4. run `node t2jd.js`
 */

var fs = require('fs');
var df = require('dateformat');

var style = {
	getDate: (date) => (df(date, 'yyyy-mm-dd hh:MM:ss')),	//DO NOT CHANGE!
	getThreadKey: (post) => ("/archives/" + post.slug),
	getPermalink: (post) => ("/archives/" + post.slug),
	getPostURL: (post) => ("http://blog.laobubu.net" + style.getPermalink(post)),
}

var src_comments = JSONparse(fs.readFileSync('typecho_comments.json', 'utf-8'));
var src_contents = JSONparse(fs.readFileSync('typecho_contents.json', 'utf-8'));

/** phpMyAdmin non-standard JSON string will not work; use this to parse */
function JSONparse(str) {
	var tmp;
	tmp = eval(str.replace(/^\/\/.*$/g, '').trim().replace(/\n/g, '\\n'));
	return tmp;
}

var duoshuo = { threads: [], posts: [] };
var comments = {};
var posts = {};

['_drafts', '_posts'].forEach((dir) => {
	try { fs.mkdirSync(dir) } catch (error) { }
})

src_contents.forEach((post) => {
	post.thread_key = style.getThreadKey(post);
	post.url = style.getPostURL(post);
	post.created = new Date(post.created * 1000);

	var fdata, fn, fstatus;

	fstatus = "_posts"
	if (/draft$/.test(post.type)) fstatus = "_drafts"
	if (/^page/.test(post.type))  fstatus = "."

	fdata = [
		"---",
		"layout: " + (/^page/.test(post.type) ? "page" : "post"),
		"title: " + JSON.stringify(post.title),
		"date: " + style.getDate(post.created),
		"categories: ", //TODO
		"permalink: " + style.getPermalink(post),
		"---",
		"",
		post.text.replace(/^<!--markdown-->/g, '')
	].join('\n');
	fn = fstatus + "/" + df(post.created, "yyyy-mm-dd") + "-" + post.slug + ".md";
	fs.writeFile(fn, fdata);

	posts[post.cid] = post;

	duoshuo.threads.push({
		thread_key: post.thread_key,
		title: post.title,
		url: post.url
	})
})

src_comments.forEach((comment) => {
	var post = posts[comment.cid];

	var push = {
		thread_key: post.thread_key,
		post_key: "typecho_coid_" + comment.coid,
		message: comment.text,
		author_name: comment.author,
		author_email: comment.mail,
		author_url: comment.url,
		ip: comment.ip,
		agent: comment.agent,
		created_at: style.getDate(new Date(comment.created * 1000))
	};

	if (comment.parent) push.parent_key = "typecho_coid_" + comment.parent;

	duoshuo.posts.push(push)
})

fs.writeFile("duoshuo.json", JSON.stringify(duoshuo))