callback地獄

reorganize.js

require('sugar');
var fs = require('fs');

var filenames = fs.readdirSync('.');
filenames.forEach(function(filename) {
	if (filename.endsWith('.png') || filename.endsWith('.jpg')) {
		fs.stat(filename, function(err, stat) {
			var time = new Date(Math.min(stat.mtime, stat.ctime, stat.atime));
			var timeString = time.getFullYear() + '-' + (time.getMonth() + 1).toString().padLeft(2, '0');
			fs.exists(timeString, function (exists) {
				if (!exists) {
					fs.mkdirSync(timeString);
				}
				fs.rename(filename, timeString + '/' + filename, function(err) {
					if (err) throw err;
				});
			});
		});
	}
});