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


void
printtime(int tdiff)
{
  int d_mins, d_hrs, d_days;

  d_days = 0;
  d_hrs = 0;
  d_mins = 0;

  if (tdiff > 86400) {/* get days */
    d_days = tdiff / 86400;
    tdiff = tdiff % 86400;
  }
  if (tdiff > 3600) { /* get hours */
    d_hrs = tdiff / 3600;
    tdiff = tdiff % 3600;
  }
  if (tdiff > 60) {  /* get minutes */
    d_mins = tdiff / 60;
    tdiff = tdiff % 60;
  }
  if (d_days > 0) {
    if (d_days == 1) {
      printf("%d day ", d_days);
    } else {
      printf("%d days ", d_days);
    }
  }
  if (d_hrs > 0) {
    if (d_hrs == 1) {
      printf("%d hour ", d_hrs);
    } else {
      printf("%d hours ", d_hrs);
    }
  }
  if (d_mins > 0) {
    if (d_mins == 1) {
      printf("%d minute ", d_mins);
    } else {
      printf("%d minutes ", d_mins);
    }
  }
  if (tdiff > 0) {
    if (tdiff == 1) {
      printf("%d second ", tdiff);
    } else {
      printf("%d seconds ", tdiff);
    }
  }

  if (tdiff == 0 && d_mins == 0 && d_hrs == 0 && d_days == 0) {
    printf("0 seconds ");
  }
}


int
main(void)
{
  FILE *infp = NULL;
  time_t t, ts, te;
  struct tm *currenttime;
  struct tm starttime;
  int tdiff;

  t = time(NULL);
  currenttime = localtime(&t);

  infp = fopen("${BUILD_DELTA_START}", "r");
  if(!fscanf(infp, "%d/%d/%d/%d/%d/%d/%d/%d/%d", &(starttime.tm_sec), &(starttime.tm_min), &(starttime.tm_hour), &(starttime.tm_mday), &(starttime.tm_mon), &(starttime.tm_year), &(starttime.tm_wday), &(starttime.tm_yday), &(starttime.tm_isdst)))
    printf("scan error\n");
  fclose(infp);

  ts = mktime(&starttime);
  te = mktime(currenttime);

  printf("Done.\n\n");

  printf("BRL-CAD Release ${BRLCAD_VERSION}, Build ${CONFIG_DATE}\n\n");

  printf("Elapsed compilation time: ");

  tdiff = (int)difftime(te, ts);

  printtime(tdiff);

  printf("\nElapsed time since configuration: ");

  infp = fopen("${DELTA_START}", "r");
  if(!fscanf(infp, "%d/%d/%d/%d/%d/%d/%d/%d/%d", &(starttime.tm_sec), &(starttime.tm_min), &(starttime.tm_hour), &(starttime.tm_mday), &(starttime.tm_mon), &(starttime.tm_year), &(starttime.tm_wday), &(starttime.tm_yday), &(starttime.tm_isdst)))
    printf("scan error\n");
  fclose(infp);

  ts = mktime(&starttime);
  tdiff = (int)difftime(te, ts);
  printtime(tdiff);
  printf("\n---\n");

  printf("${INSTALL_LINE}\n");
  printf("${BENCHMARK_LINE}\n");
  printf("\n");

  return 0;
}