waffle/lib/bootstrap.js

シンプルなWEBアプリケーションフレームワークです。(ALL YOUR NODE ARE BELONG TO US)

/*
 * Copyright 2012 Katsunori Koyanagi
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
/**
 * @overview システムレベルのフックです。
 */

"use strict";

require("./utils/patch");

var fs = require("fs");
var FSWatcher = require("./utils/FSWatcher");
var log = require("./utils/Log");

var Module = module.constructor;
if (Module.__patched__) {
	return;
}
Module.__patched__ = true;

var watcher = new FSWatcher();
var load0 = Module.prototype.load;
var lib = __dirname;

function clearCache(filename) {
	delete require.cache[filename];
}

function add(filename) {
	if (filename.indexOf(lib) !== 0) {
		log("file loaded(%s)", filename);
		watcher.add(filename);
	}
}

watcher.on("change", function(filename) {
	log("file changed(%s)", filename);
	clearCache(filename);
});
watcher.on("remove", function(filename) {
	log("file removed(%s)", filename);
	clearCache(filename);
});

Module.prototype.load = function(filename) {
	var result = load0.call(this, filename);
	add(filename);
	return result;
};