├── Procfile
├── favicon.ico
├── template.svg
├── package.json
└── index.js


/Procfile:
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1 | web: node index.js
2 | 


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/favicon.ico:
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https://raw.githubusercontent.com/jsbin/gravatar/master/favicon.ico


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/template.svg:
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1 | <svg width="30" height="30" viewBox="0 0 30 30" xmlns="http://www.w3.org/2000/svg"><title>jsbin-avatar.svg</title><g id="eyes" fill="{{fill}}"><path d="M0 10v10h30V10H0z" id="face" fill="#183E49"/><path d="M22.455 18c1.656 0 3-1.343 3-3s-1.344-3-3-3c-1.657 0-3 1.343-3 3s1.343 3 3 3z" id="right"/><path d="M7.727 18c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3z" id="left"/><path id="head-top" fill="#93A6AD" d="M0 20h30v10H0z"/><path id="head-bottom" fill="#93A6AD" d="M0 0h30v10H0z"/></g></svg>


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/package.json:
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 1 | {
 2 |   "name": "jsbin-gravatar",
 3 |   "version": "0.0.0",
 4 |   "description": "Default gravatar for jsbin",
 5 |   "main": "index.js",
 6 |   "scripts": {
 7 |     "test": "echo \"Error: no test specified\" && exit 1"
 8 |   },
 9 |   "repository": {
10 |     "type": "git",
11 |     "url": "https://github.com/jsbin/gravatar.git"
12 |   },
13 |   "keywords": [
14 |     "jsbin"
15 |   ],
16 |   "author": "Remy Sharp",
17 |   "license": "MIT",
18 |   "bugs": {
19 |     "url": "https://github.com/jsbin/gravatar/issues"
20 |   },
21 |   "homepage": "https://github.com/jsbin/gravatar",
22 |   "dependencies": {
23 |     "svg2png": "~1.1.0",
24 |     "express": "~4.8.3",
25 |     "hbs": "~2.7.0",
26 |     "serve-favicon": "~2.0.1"
27 |   }
28 | }
29 | 


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/index.js:
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 1 | 'use strict';
 2 | var fs = require('fs');
 3 | var path = require('path');
 4 | var express = require('express');
 5 | var svg2png = require('svg2png');
 6 | var favicon = require('serve-favicon');
 7 | var app = express();
 8 | 
 9 | var template = fs.readFileSync(path.join(__dirname, 'template.svg'), 'utf8');
10 | var re = new RegExp('{{fill}}');
11 | 
12 | var outdir = path.join(__dirname, 'public');
13 | 
14 | fs.mkdir(outdir, function () {});
15 | 
16 | app.use(favicon(__dirname + '/favicon.ico'));
17 | app.use(express.static(outdir));
18 | 
19 | app.get(/(.*?)\.png$/, function(req, res, next){
20 |   var url = req.params[0];
21 |   url = url.replace(/.png$/, '');
22 |   url = url.replace(/[^a-zA-Z0-9_\-]+/g, '');
23 | 
24 |   fs.writeFile(path.join(outdir, url + '.svg'), template.replace(re, 'hsl(' + hash(url, true) + ',100%,50%)'), 'utf8', function (error) {
25 |     if (error) {
26 |       console.error(error);
27 |       return next(error);
28 |     }
29 | 
30 |     svg2png(path.join(outdir, url + '.svg'), path.join(outdir, url + '.png'), function (error) {
31 |       if (error) {
32 |         console.error(error);
33 |         return next(error);
34 |       }
35 |       url = '/' + url + '.png';
36 |       console.log('done and redirect to ' + url);
37 |       res.redirect(url);
38 |     });
39 |   });
40 | });
41 | 
42 | app.listen(process.env.PORT || 8000);
43 | 
44 | 
45 | 
46 | function hash(seed) {
47 |   /*jshint bitwise:false */
48 |   var i, l;
49 |       // username as seed instead of a string and a possible string?
50 |   var hval = (seed === undefined) ? 0x811c9dc5 : seed;
51 | 
52 |   // i didn't change this, i have absolutely no knowledge of creating hashes.
53 |   for (i = 0, l = seed.length; i < l; i++) {
54 |     hval ^= seed.charCodeAt(i);
55 |     hval += (hval << 1) + (hval << 4) + (hval << 7) + (hval << 8) + (hval << 24);
56 |   }
57 | 
58 |   // max of 8 numbers to prevent hitting upper level, no
59 |   return ((hval >>> 0).toString()).substr(-8);
60 | }
61 | 


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