How to set various locales with setlocale()?

[Lee Brown]

On Fri, Feb 16, 2018 at 3:08 AM, Lee D <embaudarm at gmail.com> wrote:

> Hi,
>
> I have a C program that needs to print the date in the correct form
> for the appropriate locale.
>
> Unfortunately, setlocale() will not accept  any of the locale names in
> /usr/share/locale/, (which is documented in the man page for
> setlocale()).
>
> This is an embedded program running on custom arm hardware, not a
> normal user system, so I am trying to do everything from within the C
> program.  Setting an environment variable and rebooting would be
> cumbersome.
>
> Do you folks have any suggestions on how to accomplish this goal, or
> how to make setlocale accept the locales listed on the system?
>
>
> Different architecture, it works as advertised.  Maybe ask the arm folks?

$ cat a.c
#include <time.h>
#include <stdio.h>
#include <locale.h>

int main() {
 time_t now;
 char *s;
 s = setlocale(LC_ALL,"en_US.US-ASCII");
 char buf[100];
 time(&now);

 strftime(buf,99,"%c",localtime(&now));
 printf("%s\n", buf);

 s = setlocale(LC_ALL,"zh_TW.UTF-8");
 strftime(buf,99,"%c",localtime(&now));
 printf("%s\n", buf);

}
$ cc a.c
$ ./a.out
Fri Feb 16 11:26:58 2018
週五  2月/16 11:26:58 2018

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