fs-walk.js/old/lib/walk-jqueue-2.js

80 lines
1.9 KiB
JavaScript

(function () {
"use strict"
// Array.prototype.forEachAsync(next, item, i, collection)
require('futures/forEachAsync');
var fs = require('fs'),
EventEmitter = require('events').EventEmitter;
// 2010-11-25 jorge@jorgechamorro.com
function create(pathname, cb) {
var emitter = new EventEmitter(),
q = [],
queue = [q],
curpath;
function walk() {
fs.readdir(curpath, function(err, files) {
if (err) {
emitter.emit('error', curpath, err);
}
// XXX bug was here. next() was omitted
if (!files || 0 == files.length) {
return next();
}
var stats = [];
emitter.emit('names', curpath, files, stats);
files.forEachAsync(function (cont, file) {
emitter.emit('name', curpath, file);
fs.lstat(curpath + '/' + file, function (err, stat) {
if (err) {
emitter.emit('error', curpath, err);
}
if (stat) {
stat.name = file;
stats.push(stat);
emitter.emit('stat', curpath, file, stat);
}
cont();
});
}).then(function () {
var dirs = []
emitter.emit('stats', curpath, files, stats);
stats.forEach(function (stat) {
if (stat.isDirectory()) {
dirs.push(stat.name);
}
});
dirs.forEach(fullPath);
queue.push(q = dirs);
next();
});
});
}
function next() {
if (q.length) {
curpath = q.pop();
return walk();
}
if (queue.length -= 1) {
q = queue[queue.length-1];
return next();
}
emitter.emit('end');
}
function fullPath(v,i,o) {
o[i]= [curpath, '/', v].join('');
}
curpath = pathname;
walk();
return emitter;
}
module.exports = create;
}());