build

#!/usr/bin/env node
// Code to update README.md file with a bookmarlet
// generated from src/meeple_tweak.js.
// Also generate files for Firefox and Chrome extensions.
//
// 1. Change whatever you need in src/meeple_tweak.js
// 2. Run bin/build
// 3. Test, commit, push, whatever.
//
const fs = require('fs');
const archiver = require('archiver');

// Generate bookmarlet
const source_code = fs.readFileSync('src/meeple_tweak.js', 'utf8');
const bookmarlet = generateBookmarlet(source_code);
const readme = fs.readFileSync('README.md', 'utf8');
const updated_readme = readme.replace(/javascript:.*/, bookmarlet);
fs.writeFileSync('README.md', updated_readme);

// Generate zip for Chrome
fs.mkdirSync('dist/chrome/src/', { recursive: true });
fs.mkdirSync('dist/chrome/img/', { recursive: true });
fs.copyFileSync('chrome/manifest.json', 'dist/chrome/manifest.json');
fs.copyFileSync('img/logo48.png', 'dist/chrome/img/logo48.png');
fs.copyFileSync('img/logo96.png', 'dist/chrome/img/logo96.png');
fs.copyFileSync('src/meeple_tweak.js', 'dist/chrome/src/meeple_tweak.js');
zipDirectory('dist/chrome/', 'dist/chrome/bga-carcassonne-meeple-tweak.zip');

// Generate xpi for Firefox
fs.mkdirSync('dist/firefox/src/', { recursive: true });
fs.mkdirSync('dist/firefox/img/', { recursive: true });
fs.copyFileSync('firefox/manifest.json', 'dist/firefox/manifest.json');
fs.copyFileSync('img/logo48.png', 'dist/firefox/img/logo48.png');
fs.copyFileSync('img/logo96.png', 'dist/firefox/img/logo96.png');
fs.copyFileSync('src/meeple_tweak.js', 'dist/firefox/src/meeple_tweak.js');
zipDirectory('dist/firefox/', 'dist/firefox/bga-carcassonne-meeple-tweak.xpi');

function generateBookmarlet(str) {
  // Quick & dirty "minimize" and bookmarlet generation
  // without external libraries.
  // It'd break any "complex" code but it suffices for src/meeple_tweak.js

  function removeSingleLineComments(str) {
    return str.replace(/ \/\/.*/g, '');
  }

  function squashSpaces(str) {
    const re = /\s\s/g;
    while (str.match(re)) {
      str = str.replace(re, '');
    }
    str = str.replace(/ =/g, '=');
    str = str.replace(/= /g, '=');
    return str;
  }

  function removeMultiLineComments(str) {
    return str.replace(/\/\*.*?\*\//g, '');
  }

  str = removeSingleLineComments(str);
  str = squashSpaces(str);
  str = removeMultiLineComments(str);
  return 'javascript:' + str;
}

function zipDirectory(source, out) {
  const archive = archiver('zip', { zlib: { level: 9 }});
  const stream = fs.createWriteStream(out);

  return new Promise((resolve, reject) => {
    archive
      .directory(source, false)
      .on('error', err => reject(err))
      .pipe(stream)
    ;

    stream.on('close', () => resolve());
    archive.finalize();
  });
}