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fs-pool
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()
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