const fs = require('fs');
const files = [
  'src/post.html',
  'src/index.html',
  'src/header-menu.html',
  'src/category.html',
  'src/user-menu.html'
];
let total = 0;
for (const f of files) {
  let c = fs.readFileSync(f, 'utf8');
  const before = c;
  c = c.replace(/([\w.]+) != ([\w]+)/g, 'not ($1 == $2)');
  if (c !== before) {
    fs.writeFileSync(f, c);
    const diff = (before.match(/!=/g) || []).length;
    console.log('✓', f, '替换', diff, '处');
    total += diff;
  }
}
console.log('共替换', total, '处');