import { readFileSync } from 'node:fs';

const p =
  'd:/work/ylrz_saas/java/fs-saas-company/src/main/java/com/fs/company/controller/workflow/LobsterDeepDialogueController.java';
const raw = readFileSync(p);
const t = raw.toString('utf8');
console.log('BOM', raw.length >= 3 && raw[0] === 0xef && raw[1] === 0xbb && raw[2] === 0xbf);
console.log('FFFD', t.includes('\uFFFD'));
console.log('u escapes', (t.match(/\\u[0-9a-fA-F]{4}/g) || []).length);
t.split('\n').forEach((line, i) => {
  if (line.includes('\uFFFD') || (/[\u0080-\u00ff]{3,}/.test(line) && /[\u4e00-\u9fff]/.test(line) === false && /[\x80-\xff]/.test(line))) {
    // skip
  }
  if (line.includes('\uFFFD')) {
    console.log('FFFD', i + 1, line.trim().slice(0, 120));
  }
});