Re: How to keep UTF-8 characters, but escape non-UTF-8 byte sequence to hex codes in ASCII

[Daniel Yek <dyek real com>]

At 01:57 AM 12/1/2006, Peter Lund wrote:
> On Wed, 2006-11-29 at 17:25 -0800, Daniel Yek wrote:
>
> > To be clear, I want UTF-8 characters remain UTF-8 and only escape non-UTF-8
> > byte sequence. Is there a function that does that?
>
> I don't think so.  I didn't actually have a look but I don't recall seing one.
>
> Luckily, it is easy to write one yourself.
>
> g_utf8_get_char_validate() will tell you whether a byte sequence is a 
> valid UTF-8 char or not.
>
>
> Sketch code, not compile tested:

Thanks so much for the sample code. That is yet another way to accomplish it.

In my second email, I indicated that I implemented it using 
g_utf8_validate() very trivially. Similarly, I used GString.

Thanks.

--
Daniel Yek

> GString *convert_fname(GString *s)
> {
>         int      idx; /* byte index into s        */
>         GString *tmp; /* collect converted string */
>
>         idx = 0;
>
>         tmp = g_string_new("");
>
>         while (idx < s->len) {
>                 gunichar ch;
>
>                 ch = g_utf8_get_char_validate(s->str + idx, s->len - idx);
>                 if (ch >= 0) {
>                         g_string_append_unichar(tmp, ch);
>                         idx += g_unichar_to_utf8(ch, NULL);
>                 } else {
>                         g_string_append_c(tmp, '%');
>                         g_string_append_printf(tmp, "%02X", );
>                         idx++;
>                 }
>         }
>
>         return tmp;
> }
>
>
> -Peter