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")),
		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);
};

}());