** Generate a webpage for a webpage_assert().
*/
void webpage_assert_page(const char *zFile, int iLine, const char *zExpr){
  fossil_warning("assertion fault at %s:%d - %s", zFile, iLine, zExpr);
  cgi_reset_content();
  webpage_error("assertion fault at %s:%d - %s", zFile, iLine, zExpr);
}

/*
** Issue a 404 Not Found error for a webpage
*/
void webpage_notfound_error(const char *zFormat, ...){
  char *zMsg;
  va_list ap;
  if( zFormat ){
    va_start(ap, zFormat);
    zMsg = vmprintf(zFormat, ap);
    va_end(ap);
  }else{
    zMsg = "Not Found";
  }
  style_header("Not Found");
  @ <p>%h(zMsg)</p>
  cgi_set_status(404, "Not Found");
  style_finish_page("enotfound");
}

#if INTERFACE
# define webpage_assert(T) if(!(T)){webpage_assert_page(__FILE__,__LINE__,#T);}
#endif

/*
** Returns a pseudo-random input field ID, for use in associating an