Procesadores de Lenguajes

3º. 2º cuatrimestre. Itinerario de Computación. Grado en Ingeniería Informática. ULL

Organization ULL-ESIT-PL-1920 Github Classroom ULL-ESIT-PL-1920 Campus Virtual PL Chat Chat Profesor Casiano

Gulp: a tool to Automate and Enhance your Workflow

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"));