PL_chars_to_term caracter encoding

Hello List,

I'll try to feed SWI-Prolog (latest stabile release 6.6.2) with some Unicode chars. 

PL_chars_to_term() is the interesting part here. I'll try an utf8 encoding but I did not work.


     	PlCall("consult('d:/test.pl')");
	// save_term('eşek').
	// char str[19] = {'s','a','v','e','_','t','e','r','m','(',0x27, 0x65, 0xc5, 0x9f, 0x65,  0x6b, 0x27, ')', 0};
	// none('eşek').
	char str[14] = {'n','o','n','e','(',0x27, 0x65, 0xc5, 0x9f, 0x65,  0x6b, 0x27, ')', 0};
	// char str[8] = {0x27, 0x65, 0x65, 0x65, 0x65,  0x65, 0x27, 0};
	char * pStr = &str[0];
	bool b = PlCall(pStr);  // is false and should be true
	PlTerm t = PlCompound(pStr);	// an other test
	
How can this be done?

Any ideas are welcome.


Prolog helper file test.pl
--------------------------
save_term_to_file(File, Term) :-
	setup_call_cleanup(open(File, write, Out, [encoding(utf8)]),
			   format(Out, '~q .~n', [Term]),
			   close(Out)).

save_term(T):-
	save_term_to_file('d:\\test.out', T).

	% in Utf8 hex codes 65 c5 9f 65 6b
none('eşek').
--------------------------

-- 

Kind regards 

Uwe Lesta