Unity Package Mass Labelling script - Node.js

package.json

{
  "name": "unity-mass-labeler",
  "version": "0.0.1",
  "description": "",
  "main": "mass-labeler.js",
  "dependencies": {
    "lodash": "^3.5.0",
    "recursive-readdir": "^1.2.0"
  },
  "devDependencies": {},
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "Gur Dotan",
  "license": "MIT"
}

unity-mass-labeler.js

var _ = require('lodash');
var fs = require('fs');
var recursive = require('recursive-readdir');

//
// Fill in these:
//
var labels = ['FILL', 'IN', 'YOUR', 'LABELS', 'IN', 'THIS', 'ARRAY'];
var packagePath = 'FILL IN THE PATH TO YOUR ASSETS FOLDER';


// ignore files with .png and .DS_STORE suffices
recursive(packagePath, ['*.png', '.DS_Store'], function (err, paths) {

  // Files is an array of filename
  console.log(paths);

  _.each(paths, function(path) {

    // Skip non meta files
    if (!path.match(/\.meta$/)) return;

    try {
      var str = "labels:\n";
      str += _.map(labels, function(el) {
        return '- ' + el + '\n'
      }).join('');

      fs.appendFileSync(path, str);
      console.log('Meta file written: ' + path);

    } catch (e) {
      console.log(e);
    }
  });

  console.log('Done');
});