//
// stampit -- Display start, end, elapsed time of given command line.
//
// 21-Feb-2011 Tom Van Baak (tvb) www.LeapSecond.com/tools
//

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

int main (int argc, char *argv[])
{
    long t0, t1;
    char *cmd, buf[1000];

    if (argc < 2) {
        fprintf(stderr, "Usage: %s [command to be timed]\n", argv[0]);
        return 1;
    }
    cmd = buf;
    while (argc > 1) {
        cmd += sprintf(cmd, " %s", argv[1]);
        argc -= 1;
        argv += 1;
    }
    cmd = buf + 1;

    { time_t t; time(&t); fprintf(stderr, "%.24s start\n", ctime(&t)); }
    t0 = clock();
    system(cmd);
    t1 = clock();
    { time_t t; time(&t); fprintf(stderr, "%.24s end\n", ctime(&t)); }

    fprintf(stderr, " %.3lf seconds (%s)\n", (double) (t1 - t0) / CLOCKS_PER_SEC, cmd);
    return 0;
}