Correctly decoding zip entry file names — CP437, UTF-8 or?

Question

I recently wrote a zip file I/O library called zipzap, but I\'m struggling with correctly decoding zip entry file names from arbitrary zip files.

Now, the PKWARE spe

Answer 1

At the moment situation is as following:

• most of Windows implementations use DOS (OEM) encoding
• Mac OS zip utility uses utf-8, but it doesn't set utf-8 bit flags
• *nix zip utilities silently uses system encoding

So the only way is to check if filename contains something like utf-8 characters (check description of utf8 encoding - first byte should be 110xxxxx, second - 10xxxxxx for 2-bytes encoded chars). If it is correct utf8 string - use utf8 encoding. If not - fall back to OEM/DOS encoding.