From: "Iñaki Baz Castillo" <ibc@...>
Date: 2009-04-04T04:00:38+09:00
Subject: Re: Problem with String encoding when modifying it in C method

El Viernes 03 Abril 2009, Iñaki Baz Castillo escribió:
> El Viernes 03 Abril 2009, Andre Nathan escribió:
> > On Sat, 2009-04-04 at 01:39 +0900, Iñaki Baz Castillo wrote:
> > > Could I invoke the C "force_encoding()" function from the C code
> > > before returning the modified string? How to invoke it?
> >
> > You can call it as (untested):
> >
> >   rb_funcall(str, rb_intern("force_encoding"), 1, rb_str_new2("utf-8"));
> >
> > I'm not sure how to make your multi-capitalize method do the right
> > thing, but maybe reading the source of rb_str_capitalize_bang in
> > string.c helps.
>
> Thanks a lot, I will check it.

Yes, rb_str_capitralize_bang handles a lot of stuf realted to encoding:

    c = rb_enc_codepoint(s, send, enc);
    if (rb_enc_islower(c, enc)) {
	rb_enc_mbcput(rb_enc_toupper(c, enc), s, enc);
	modify = 1;
    }
    s += rb_enc_codelen(c, enc);

so this is the way :)

Thanks a lot.

-- 
Iñaki Baz Castillo <ibc@aliax.net>