amiga-tz/utility/dstcheck.c

//--------------------------------------------------------------------------//
// This file is in the public domain.                                       //
//--------------------------------------------------------------------------//

#include <stdio.h>
#include <exec/execbase.h>
#include <exec/libraries.h>
#include "tzversion.h"
#include "clib/timezone.h"
#include "inline/timezone.h"

const char *vers = "\0$VER: DSTCheck" AMIGA_VERSION;

struct Library *TimezoneBase;

int main(const int argc, char *argv[])
{
    int result;
    struct tm tm;
    time_t now ;

    TimezoneBase = (struct Library*)OpenLibrary((STRPTR)"timezone.library", 0);
    if (!TimezoneBase) {
        printf("Cannot open timezone library.\n");
        return 0;
    }

    now = time(NULL);
    localtime_r(&now, &tm);
    result = tm.tm_isdst ? 5 : 0;

    CloseLibrary(TimezoneBase);
    return result;
}