time_time.c

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/* time$ function */

#include "fb.h"
#include <time.h>

/*:::::*/
FBCALL FBSTRING *fb_Time ( void )
{
        FBSTRING        *dst;
        time_t          rawtime;
        struct tm       *ptm;

        /* guard by global lock because time/localtime might not be thread-safe */
        FB_LOCK();

        rawtime = time( NULL );

        /* Note: localtime() may return NULL, as documented on MSDN and Linux man pages,
           and it has been observed to do that on at least one FB user's Windows system,
           because of a negative time_t value from time(). */
        if( ((ptm = localtime( &rawtime )) != NULL) &&
            ((dst = fb_hStrAllocTemp( NULL, 2+1+2+1+2 )) != NULL) /* done last so it's not leaked */ ) {
                sprintf( dst->data, "%02d:%02d:%02d", ptm->tm_hour, ptm->tm_min, ptm->tm_sec );
        } else {
                dst = &__fb_ctx.null_desc;
        }

        FB_UNLOCK();

        return dst;
}