Re: [slang-users] Welcome to the "slang-users-l" mailing list

["John E. Davis" <davis@xxxxxxxxxxxxx>]

Ian Langworth <ian.langworth@xxxxxxxxx> wrote:
> I'm attempting to print a UTF-8 encoded character to the screen in a
> Unicode-capable terminal:

There are a couple of things wrong:
>
>     #include <slang.h>
>     #include <stdio.h>
>
>     int main(int argc, char* argv[]) {
>       SLtt_get_terminfo();
>       SLang_init_tty(-1, 1, 0);
>       SLsmg_init_smg();
>
>       SLutf8_enable(-1);

  SLutf8_enable has to be called first before any of the other
  functions.  I should document this requirement.

>       SLsmg_cls();
>       SLsmg_gotorc(0, 0);
>       SLsmg_write_string("黑\n");
>       SLsmg_write_nchars("黑", 1);

  SLsmg_write_nchars predates slang's UTF-8 support.  It should more
  properly be called SLsmg_write_nbytes.  As such, yiu are writing the
  first byte of the string to the display.  You need to use strlen
  here to write all the bytes.

  Here is a corrected version that should work for you.  Thanks, --John

#include <slang.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char* argv[])
{
   char *str = "黑";

   SLutf8_enable(-1);

   SLtt_get_terminfo();
   SLang_init_tty(-1, 1, 0);
   SLsmg_init_smg();

   SLsmg_cls();
   SLsmg_gotorc(0, 0);
   SLsmg_write_string("黑\n");
   SLsmg_write_nchars (str, strlen(str));
   SLsmg_gotorc(5, 0);
   SLsmg_refresh();
   SLang_getkey();

   SLsmg_reset_smg();
   SLang_reset_tty();
   return 0;
}
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