Created
January 23, 2012 00:29
-
-
Save FLYBYME/1659615 to your computer and use it in GitHub Desktop.
fs-pool
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
var fs = require('fs') | |
var events = require('events') | |
var util = require('util') | |
var path = require('path') | |
var FsPool = module.exports = function(dir) { | |
events.EventEmitter.call(this) | |
this.dir = dir; | |
this.files = []; | |
this.active = []; | |
this.threads = 1; | |
this.on('run', this.runQuta.bind(this)) | |
}; | |
// So will act like an event emitter | |
util.inherits(FsPool, events.EventEmitter); | |
FsPool.prototype.runQuta = function() { | |
if(this.files.length === 0 && this.active.length === 0) { | |
return this.emit('done'); | |
} | |
if(this.active.length < this.threads) { | |
var name = this.files.shift() | |
this.active.push(name) | |
var fileName = path.join(this.dir, name); | |
var self = this; | |
fs.stat(fileName, function(err, stats) { | |
if(err) | |
throw err; | |
if(stats.isFile()) { | |
fs.readFile(fileName, function(err, data) { | |
if(err) | |
throw err; | |
self.active.splice(self.active.indexOf(name), 1) | |
self.emit('file', name, data); | |
self.emit('run'); | |
}); | |
} else { | |
self.active.splice(self.active.indexOf(name), 1) | |
self.emit('dir', name); | |
self.emit('run'); | |
} | |
}); | |
} | |
return this | |
}; | |
FsPool.prototype.init = function() { | |
var dir = this.dir; | |
var self = this; | |
fs.readdir(dir, function(err, files) { | |
if(err) | |
throw err; | |
self.files = files | |
self.emit('run'); | |
}) | |
return this | |
}; | |
var fsPool = new FsPool(__dirname) | |
fsPool.on('file', function(fileName, fileData) { | |
console.log('file name: ' + fileName) | |
console.log('file data: ', fileData.toString('utf8')) | |
}) | |
fsPool.on('dir', function(dirName) { | |
console.log('dir name: ' + dirName) | |
}) | |
fsPool.on('done', function() { | |
console.log('done') | |
}); | |
fsPool.init() |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment