Desarrollo y Mantenimiento de Sistemas Informáticos

4º. 1er cuatrimestre. Itinerario de Sistemas de la Información. Grado en Ingeniería Informática. ULL

Organization DMSI org Github Classroom DMSI class Campus Virtual DMSI campus Profesor Casiano Chat Chat

Gulp: a tool to Automate and Enhance your Workflow

Gulp Tutorial Getting Started

Gulp API Documentation

Examples of how to execute shell commands with gulp

En gulp 4.0

[~/.../chapter20-nodejs/juanIrache-20_3_public_space(master)]$ pwd -P
/Users/casiano/local/src/javascript/eloquent-javascript-3/juanIrache-solutions/20_3_public_space

[~/.../juanIrache-solutions/20_3_public_space(master)]$ cat gulpfile.js

const gulp = require("gulp");
const { exec } = require('child_process');
const util = require('util');
const pexec = util.promisify(require('child_process').exec);

function server() {
  try {
    let s = exec('nodemon server.js');
    s.stdout.pipe(process.stdout);
    s.stderr.pipe(process.stderr);
  } catch(e) {
    console.error("Hubieron errores:\n"+e);
  }
}

async function cget() {
  try {
    const {stdout, stderr} = await pexec("curl -v http://localhost:8000/package.json");
    console.log('stdout:', stdout);
    console.error('stderr:', stderr);
  } catch(e) {
    console.error("Hubieron errores:\n"+e);
  }
}

exports.cget = cget;
exports.server = server;

[~/.../juanIrache-solutions/20_3_public_space(master)]$ gulp server
[13:32:53] Using gulpfile ~/local/src/javascript/eloquent-javascript-3/juanIrache-solutions/20_3_public_space/gulpfile.js
[13:32:53] Starting 'server'...
[nodemon] 1.11.0
[nodemon] to restart at any time, enter `rs`
[nodemon] watching: *.*
[nodemon] starting `node server.js`
hello world!

En otra terminal:

[~/.../chapter20-nodejs/juanIrache-20_3_public_space(master)]$ gulp cget
[13:35:11] Using gulpfile ~/local/src/javascript/eloquent-javascript-3/juanIrache-solutions/20_3_public_space/gulpfile.js
[13:35:11] Starting 'cget'...
stdout: {
  "name": "20_3_public_space",
  "version": "1.0.0",
  "description": "Solutions for Chapter 20 of EJS book: https://eloquentjavascript.net/20_node.html by Juan Irache",
  "main": "code.js",
  "scripts": {
    "test": "nodemon server.js",
    "start": "node server.js"
  },
  "keywords": [],
  "author": "Casiano Rodriguez-Leon <casiano.rodriguez.leon@gmail.com> (https://github.com/crguezl)",
  "license": "ISC",
  "dependencies": {
    "mime": "^2.4.4"
  },
  "devDependencies": {
    "gulp": "^4.0.2"
  }
}

stderr:   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0*   Trying ::1...
* TCP_NODELAY set
* Connected to localhost (::1) port 8000 (#0)
> GET /package.json HTTP/1.1
> Host: localhost:8000
> User-Agent: curl/7.54.0
> Accept: */*
> 
< HTTP/1.1 200 OK
< Access-Control-Allow-Origin: *
< Access-Control-Allow-Methods: POST, PUT, GET, OPTIONS, DELETE, MKCOL
< Content-Type: application/json
< Date: Thu, 31 Oct 2019 13:35:12 GMT
< Connection: keep-alive
< Transfer-Encoding: chunked
< 
{ [519 bytes data]
100   512    0   512    0     0   9662      0 --:--:-- --:--:-- --:--:--  9846
* Connection #0 to host localhost left intact

[13:35:12] Finished 'cget' after 97 ms

En Gulp 3.9

Véase la sección Gulp de los apuntes

Aquí tiene un ejemplo (incompleto) en gulp 3.9:

  var gulp = require("gulp");
  var shell = require("gulp-shell");

  gulp.task("pre-install", shell.task([
        "npm i -g gulp static-server",
        "npm install -g nodemon",
        "npm install -g gulp-shell"
  ]));

  gulp.task("serve", shell.task("nodemon server.js"));

  gulp.task("lint", shell.task("jshint *.js **/*.js"));

  gulp.task("get", shell.task("curl -v http://localhost:8000/file.txt"));
  gulp.task("put", shell.task("curl -v -X PUT -d 'Bye world!' http://localhost:8000/file.txt"));