增加井号重复判断

‘liusuyi’

2023-07-03 29d8ea701df5bba27bda837a550853b299207040

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Tobias Koppers @sokra
*/
"use strict";
 
var watcherManager = require("./watcherManager");
var EventEmitter = require("events").EventEmitter;
 
function Watchpack(options) {
    EventEmitter.call(this);
    if(!options) options = {};
    if(!options.aggregateTimeout) options.aggregateTimeout = 200;
    this.options = options;
    this.watcherOptions = {
        ignored: options.ignored,
        poll: options.poll
    };
    this.fileWatchers = [];
    this.dirWatchers = [];
    this.mtimes = Object.create(null);
    this.paused = false;
    this.aggregatedChanges = [];
    this.aggregatedRemovals = [];
    this.aggregateTimeout = 0;
    this._onTimeout = this._onTimeout.bind(this);
}
 
module.exports = Watchpack;
 
Watchpack.prototype = Object.create(EventEmitter.prototype);
 
Watchpack.prototype.watch = function watch(files, directories, startTime) {
    this.paused = false;
    var oldFileWatchers = this.fileWatchers;
    var oldDirWatchers = this.dirWatchers;
    this.fileWatchers = files.map(function(file) {
        return this._fileWatcher(file, watcherManager.watchFile(file, this.watcherOptions, startTime));
    }, this);
    this.dirWatchers = directories.map(function(dir) {
        return this._dirWatcher(dir, watcherManager.watchDirectory(dir, this.watcherOptions, startTime));
    }, this);
    oldFileWatchers.forEach(function(w) {
        w.close();
    }, this);
    oldDirWatchers.forEach(function(w) {
        w.close();
    }, this);
};
 
Watchpack.prototype.close = function resume() {
    this.paused = true;
    if(this.aggregateTimeout)
        clearTimeout(this.aggregateTimeout);
    this.fileWatchers.forEach(function(w) {
        w.close();
    }, this);
    this.dirWatchers.forEach(function(w) {
        w.close();
    }, this);
    this.fileWatchers.length = 0;
    this.dirWatchers.length = 0;
};
 
Watchpack.prototype.pause = function pause() {
    this.paused = true;
    if(this.aggregateTimeout)
        clearTimeout(this.aggregateTimeout);
};
 
function addWatchersToArray(watchers, array) {
    watchers.forEach(function(w) {
        if(array.indexOf(w.directoryWatcher) < 0) {
            array.push(w.directoryWatcher);
            addWatchersToArray(Object.keys(w.directoryWatcher.directories).reduce(function(a, dir) {
                if(w.directoryWatcher.directories[dir] !== true)
                    a.push(w.directoryWatcher.directories[dir]);
                return a;
            }, []), array);
        }
    });
}
 
Watchpack.prototype.getTimes = function() {
    var directoryWatchers = [];
    addWatchersToArray(this.fileWatchers.concat(this.dirWatchers), directoryWatchers);
    var obj = Object.create(null);
    directoryWatchers.forEach(function(w) {
        var times = w.getTimes();
        Object.keys(times).forEach(function(file) {
            obj[file] = times[file];
        });
    });
    return obj;
};
 
Watchpack.prototype._fileWatcher = function _fileWatcher(file, watcher) {
    watcher.on("change", function(mtime, type) {
        this._onChange(file, mtime, file, type);
    }.bind(this));
    watcher.on("remove", function(type) {
        this._onRemove(file, file, type);
    }.bind(this));
    return watcher;
};
 
Watchpack.prototype._dirWatcher = function _dirWatcher(item, watcher) {
    watcher.on("change", function(file, mtime, type) {
        this._onChange(item, mtime, file, type);
    }.bind(this));
    return watcher;
};
 
Watchpack.prototype._onChange = function _onChange(item, mtime, file) {
    file = file || item;
    this.mtimes[file] = mtime;
    if(this.paused) return;
    this.emit("change", file, mtime);
    if(this.aggregateTimeout)
        clearTimeout(this.aggregateTimeout);
    if(this.aggregatedChanges.indexOf(item) < 0)
        this.aggregatedChanges.push(item);
    this.aggregateTimeout = setTimeout(this._onTimeout, this.options.aggregateTimeout);
};
 
Watchpack.prototype._onRemove = function _onRemove(item, file) {
    file = file || item;
    delete this.mtimes[item];
    if(this.paused) return;
    this.emit("remove", item);
    if(this.aggregateTimeout)
        clearTimeout(this.aggregateTimeout);
    if(this.aggregatedRemovals.indexOf(item) < 0)
        this.aggregatedRemovals.push(item);
    this.aggregateTimeout = setTimeout(this._onTimeout, this.options.aggregateTimeout);
};
 
Watchpack.prototype._onTimeout = function _onTimeout() {
    this.aggregateTimeout = 0;
    var changes = this.aggregatedChanges;
    var removals = this.aggregatedRemovals;
    this.aggregatedChanges = [];
    this.aggregatedRemovals = [];
    this.emit("aggregated", changes, removals);
};