mirror of https://github.com/jkjoy/sunpeiwen.git
53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
|
/*
|
||
|
|
MIT License http://www.opensource.org/licenses/mit-license.php
|
||
|
|
Author Tobias Koppers @sokra
|
||
|
|
*/
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
const path = require("path");
|
||
|
|
const DirectoryWatcher = require("./DirectoryWatcher");
|
||
|
|
|
||
|
|
class WatcherManager {
|
||
|
|
constructor(options) {
|
||
|
|
this.options = options;
|
||
|
|
this.directoryWatchers = new Map();
|
||
|
|
}
|
||
|
|
|
||
|
|
getDirectoryWatcher(directory) {
|
||
|
|
const watcher = this.directoryWatchers.get(directory);
|
||
|
|
if (watcher === undefined) {
|
||
|
|
const newWatcher = new DirectoryWatcher(this, directory, this.options);
|
||
|
|
this.directoryWatchers.set(directory, newWatcher);
|
||
|
|
newWatcher.on("closed", () => {
|
||
|
|
this.directoryWatchers.delete(directory);
|
||
|
|
});
|
||
|
|
return newWatcher;
|
||
|
|
}
|
||
|
|
return watcher;
|
||
|
|
}
|
||
|
|
|
||
|
|
watchFile(p, startTime) {
|
||
|
|
const directory = path.dirname(p);
|
||
|
|
if (directory === p) return null;
|
||
|
|
return this.getDirectoryWatcher(directory).watch(p, startTime);
|
||
|
|
}
|
||
|
|
|
||
|
|
watchDirectory(directory, startTime) {
|
||
|
|
return this.getDirectoryWatcher(directory).watch(directory, startTime);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const watcherManagers = new WeakMap();
|
||
|
|
/**
|
||
|
|
* @param {object} options options
|
||
|
|
* @returns {WatcherManager} the watcher manager
|
||
|
|
*/
|
||
|
|
module.exports = options => {
|
||
|
|
const watcherManager = watcherManagers.get(options);
|
||
|
|
if (watcherManager !== undefined) return watcherManager;
|
||
|
|
const newWatcherManager = new WatcherManager(options);
|
||
|
|
watcherManagers.set(options, newWatcherManager);
|
||
|
|
return newWatcherManager;
|
||
|
|
};
|
||
|
|
module.exports.WatcherManager = WatcherManager;
|