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