Function main

src/cat.c:681–975

}

int
main (int argc, char **argv)
{
  /* Nonzero if we have ever read standard input.  */
  bool have_read_stdin = false;

  struct stat ostat_buf;

  /* Variables that are set according to the specified options.  */
  bool number = false;
  bool number_nonblank = false;
  bool squeeze_blank = false;
  bool show_ends = false;
  bool show_nonprinting = false;
  bool show_tabs = false;
  int file_open_mode = O_RDONLY;

  static struct option const long_options[] =
  {
    {"number-nonblank", no_argument, NULL, 'b'},
    {"number", no_argument, NULL, 'n'},
    {"squeeze-blank", no_argument, NULL, 's'},
    {"show-nonprinting", no_argument, NULL, 'v'},
    {"show-ends", no_argument, NULL, 'E'},
    {"show-tabs", no_argument, NULL, 'T'},
    {"show-all", no_argument, NULL, 'A'},
    {GETOPT_HELP_OPTION_DECL},
    {GETOPT_VERSION_OPTION_DECL},
    {NULL, 0, NULL, 0}
  };

  initialize_main (&argc, &argv);
  set_program_name (argv[0]);
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEDIR);
  textdomain (PACKAGE);

  /* Arrange to close stdout if we exit via the
     case_GETOPT_HELP_CHAR or case_GETOPT_VERSION_CHAR code.
     Normally STDOUT_FILENO is used rather than stdout, so
     close_stdout does nothing.  */
  atexit (close_stdout);

  /* Parse command line options.  */

  int c;
  while ((c = getopt_long (argc, argv, "benstuvAET", long_options, NULL))
         != -1)
    {
      switch (c)
        {
        case 'b':
          number = true;
          number_nonblank = true;
          break;

        case 'e':
          show_ends = true;