Function parseCharsetFromContentType

src/pkg/utils/encoding.ts:6–10

(ct: string | null)

 * 从 Content-Type header 中解析 charset
 */
export const parseCharsetFromContentType = (ct: string | null): string => {
  if (!ct) return "";
  const m = /charset\s*=\s*["']?([^"';\s]+)/i.exec(ct);
  return m ? m[1].toLowerCase() : "";
};

export const decodeUTF32 = (utf32Bytes: Uint8Array, isLE: boolean = true): string => {
  if (!(utf32Bytes instanceof Uint8Array)) {