gpgtar,w32: Handle Unicode file names.
* tools/gpgtar.c (oUtf8Strings): New. (opts): Add option --utf8-strings. (parse_arguments): Set option. * tools/gpgtar.h (opt): Add field utf8strings. * tools/gpgtar-create.c (name_to_utf8): New. (fillup_entry_w32): Use that. (scan_directory): Ditto. (scan_directory) [W32]: Convert file name to utf8. (gpgtar_create): Convert pattern.
Note that this works only with file names read from a file or if the
specified files on the command line are plain ascii. When recursing
into a directory Unicode file names work again. This limitation is
due to main(int, char**) which can't get the wchar version. We could
fix that but is needs a bit more work in our init code.
- GnuPG-bug-id: T4083
- Signed-off-by: Werner Koch <firstname.lastname@example.org>