Generate CSV dir tree (node script)

tree-to-csv.js

// Generate CSV dir tree

const Promise = require('bluebird');
const fs = require('fs-promise');
const _ = require('lodash');
const path = require('path');

// install dependencies in script dir
// npm install bluebird fs-promise lodash

const DIR = '/home/dani/dir/to/scan'; // replace with target dir

// > node tree-to-csv.js > output.csv

const tree = (dir, preffix) => {
  return Promise.resolve(fs.readdir(dir))
    .then(files => filter(dir, files))
    .then(files => Promise.mapSeries(files, (file, i) => readFile(dir, file, preffix, i + 1)))
    .then(_.flattenDeep);
};

const filter = (dir, files) => Promise.map(files, (file) => {
  return Promise.resolve(path.join(dir, file))
    .then(fs.stat)
    .then((s) => {
      if (!s.isDirectory()) return false;
      return file;
    });
}).then(files => _.filter(files));

const readFile = (dir, file, preffix, count) => {
    return Promise.resolve(path.join(dir, file))
      .then(fs.stat)
      .then((s) => {
          const newPreffix = `${preffix ? `${preffix}.` : ''}${count++}`;
      if (s.isDirectory()) {
        return tree(path.join(dir, file), newPreffix).then(result => _.concat(`${newPreffix} ${file}`, result));
      }
      return false;
    });
};

tree(DIR).then(dirs => `CARPETAS (${path.basename(DIR)})\n${dirs.join('\n')}`).tap(console.log);