[PATCH 6/8] efi-selftest: Add international characters test

[Heinrich Schuchardt]

On 1/10/22 01:56, Andre Przywara wrote:
> UEFI relies entirely on unicode output, which actual fonts displayed on
> the screen might not be ready for.
> 
> Add a test displaying some international characters, to reveal missing
> glyphs, especially in our builtin fonts.
> This would be needed to be manually checked on the screen for
> correctness.
> 
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
>   lib/efi_selftest/efi_selftest_textoutput.c | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/lib/efi_selftest/efi_selftest_textoutput.c b/lib/efi_selftest/efi_selftest_textoutput.c
> index a87f65e197f..a437732496b 100644
> --- a/lib/efi_selftest/efi_selftest_textoutput.c
> +++ b/lib/efi_selftest/efi_selftest_textoutput.c
> @@ -118,6 +118,11 @@ static int execute(void)
>   		efi_st_printf("Unicode not handled properly\n");
>   		return EFI_ST_FAILURE;
>   	}
> +	ret = con_out->output_string(con_out, L"Österreich Edelweiß Smørrebrød Smörgås Niño René >Ἑλλάς<\n");

%s/L"/u"/

Please, don't use UTF-8 in code as some tools don't support it. Instead 
use \u escape codes:

const u16 text[] =
u"\u00d6\sterreich Edelwei\u00df \Sm\u00f8rrebr\u00f8d Sm\u00f6rg"
u"\u00e5s Ni\u00f1o Ren\u00e9 >\u1f19\u03bb\u03bb\u03ac\u03c2<\n";

Best regards

Heinrich

> +	if (ret != EFI_ST_SUCCESS) {
> +		efi_st_error("OutputString failed for international chars\n");
> +		return EFI_ST_FAILURE;
> +	}
>   	efi_st_printf("\n");
>   
>   	return EFI_ST_SUCCESS;