[6a3a178] | 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Tobias Koppers @sokra
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| 4 | */
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| 5 | "use strict";
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| 6 |
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| 7 | const path = require("path");
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| 8 | const DirectoryWatcher = require("./DirectoryWatcher");
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| 9 |
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| 10 | class WatcherManager {
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| 11 | constructor(options) {
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| 12 | this.options = options;
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| 13 | this.directoryWatchers = new Map();
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| 14 | }
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| 15 |
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| 16 | getDirectoryWatcher(directory) {
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| 17 | const watcher = this.directoryWatchers.get(directory);
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| 18 | if (watcher === undefined) {
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| 19 | const newWatcher = new DirectoryWatcher(this, directory, this.options);
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| 20 | this.directoryWatchers.set(directory, newWatcher);
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| 21 | newWatcher.on("closed", () => {
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| 22 | this.directoryWatchers.delete(directory);
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| 23 | });
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| 24 | return newWatcher;
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| 25 | }
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| 26 | return watcher;
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| 27 | }
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| 28 |
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| 29 | watchFile(p, startTime) {
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| 30 | const directory = path.dirname(p);
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| 31 | if (directory === p) return null;
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| 32 | return this.getDirectoryWatcher(directory).watch(p, startTime);
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| 33 | }
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| 34 |
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| 35 | watchDirectory(directory, startTime) {
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| 36 | return this.getDirectoryWatcher(directory).watch(directory, startTime);
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| 37 | }
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| 38 | }
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| 39 |
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| 40 | const watcherManagers = new WeakMap();
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| 41 | /**
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| 42 | * @param {object} options options
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| 43 | * @returns {WatcherManager} the watcher manager
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| 44 | */
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| 45 | module.exports = options => {
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| 46 | const watcherManager = watcherManagers.get(options);
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| 47 | if (watcherManager !== undefined) return watcherManager;
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| 48 | const newWatcherManager = new WatcherManager(options);
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| 49 | watcherManagers.set(options, newWatcherManager);
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| 50 | return newWatcherManager;
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| 51 | };
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| 52 | module.exports.WatcherManager = WatcherManager;
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