Function extractCodexModel

actions/setup/js/parse_codex_log.cjs:282–295

* Extract the model name from Codex log header lines. * Codex logs include a line like "model: o4-mini" near the top. * @param {string} logContent - The raw log content * @returns {string|null} The model name, or null if not found

(logContent)

 * @returns {string|null} The model name, or null if not found
 */
function extractCodexModel(logContent) {
  const match = logContent.match(/^model:\s*(.+)$/m);
  if (match) {
    return match[1].trim();
  }
  // Fallback for the experimental JSONL format, which has no "model:" header line.
  // The codex harness logs the resolved spawn command, e.g.
  //   [codex-harness] ... spawning: codex exec --model gpt-5.4 -c ...
  const spawnMatch = logContent.match(/spawning:\s*codex\s+exec\s+--model\s+(\S+)/);
  if (spawnMatch) {
    return spawnMatch[1].trim();
  }
  return null;
}

/**
 * Detects whether the log is in the Codex experimental JSONL event format.