TiddlyWiki5/core/modules/server/routes/get-index.js

/*\
title: $:/core/modules/server/routes/get-index.js
type: application/javascript
module-type: route

GET /

\*/
(function() {

/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";

var zlib = require('zlib');

exports.method = "GET";

exports.path = /^\/$/;

exports.handler = function(request,response,state) {
	var acceptEncoding = request.headers['accept-encoding'];
	if (!acceptEncoding) { acceptEncoding = ''; }

	var text = state.wiki.renderTiddler(state.server.get("root-render-type"),state.server.get("root-tiddler"));

	var responseHeaders = {
		"Content-Type": state.server.get("root-serve-type")
	};

	/*
	If the gzip=yes flag for `listen` is set, check if the user agent permits
	compression. If so, compress our response. Note that we use the synchronous
	functions from zlib to stay in the imperative style. The current `Server`
	doesn't depend on this, and we may just as well use the async versions.
	*/
	if(state.server.enableGzip) {
		if (/\bdeflate\b/.test(acceptEncoding)) {
			responseHeaders['Content-Encoding'] = 'deflate';
			text = zlib.deflateSync(text);
		} else if (/\bgzip\b/.test(acceptEncoding)) {
			responseHeaders['Content-Encoding'] = 'gzip';
			text = zlib.gzipSync(text);
		}
	}

	response.writeHead(200, responseHeaders);
	response.end(text);
};

}());