Download gravatar user images from a git repository folder to be used with gource

gravatar.js

const fs = require('fs');
const path = require('path');
const shelljs = require('shelljs');
const crypto = require('crypto');

const size = 90;
const output_dir = '.git/avatar';

shelljs.mkdir('-p', output_dir);

const log_command = 'git log --pretty=format:"%ae|%an"';

const logResult = shelljs.exec(log_command, { silent: true });
const logs = Array.from(new Set(logResult.stdout.split(/[\n\r]/).sort()));

console.log('Found %d users', logs.length); // eslint-disable-line
for (let i = 0; i < logs.length; i += 1) {
  const item = logs[i];
  const [email, name] = item.split('|');
  const imagePath = path.join(__dirname, output_dir, `${name}.png`);
  if (fs.existsSync(imagePath)) {
    continue;
  }

  const emailHash = crypto.createHash('md5').update(email).digest('hex');
  const grav_url = `http://www.gravatar.com/avatar/${emailHash}?d=404&size=${size}`; 
  console.log('Downloading %s', email); // eslint-disable-line
  const result = shelljs.exec(`wget --output-document='${imagePath}' ${grav_url}`, { silent: true });
  if (result.stderr.indexOf('ERROR 404') > -1) {
    shelljs.exec(`rm '${imagePath}'`);
  }
  shelljs.exec('sleep 1');
}


const gourceCommand = `gource \
    -s 2 \
    -1280x720 \
    --auto-skip-seconds .1 \
    --multi-sampling \
    --stop-at-end \
    --key \
    --highlight-users \
    --date-format "%d/%m/%y" \
    --hide mouse,filenames \
    --file-idle-time 0 \
    --max-files 0  \
    --background-colour 000000 \
    --font-size 25 --user-image-dir ${output_dir}
`

console.log('%s', gourceCommand); // eslint-disable-line

Based on this pearl script: https://code.google.com/archive/p/gource/wikis/GravatarExample.wiki

• gource
• jshell ( external library required )