1  /*
       2   * get-mtime.c: get a file's modification time
       3   *
       4   * Copyright (C) 2022 Colin Watson.
       5   *
       6   * This file is part of man-db.
       7   *
       8   * man-db is free software; you can redistribute it and/or modify it
       9   * under the terms of the GNU General Public License as published by
      10   * the Free Software Foundation; either version 2 of the License, or
      11   * (at your option) any later version.
      12   *
      13   * man-db is distributed in the hope that it will be useful, but
      14   * WITHOUT ANY WARRANTY; without even the implied warranty of
      15   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16   * GNU General Public License for more details.
      17   *
      18   * You should have received a copy of the GNU General Public License
      19   * along with man-db; if not, write to the Free Software Foundation,
      20   * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
      21   */
      22  
      23  #ifdef HAVE_CONFIG_H
      24  #  include "config.h"
      25  #endif /* HAVE_CONFIG_H */
      26  
      27  #include <errno.h>
      28  #include <stdlib.h>
      29  
      30  #include "argp.h"
      31  #include "progname.h"
      32  #include "stat-time.h"
      33  
      34  #include "manconfig.h"
      35  
      36  #include "fatal.h"
      37  
      38  char *path;
      39  
      40  static const char args_doc[] = "PATH";
      41  
      42  static error_t parse_opt (int key, char *arg, struct argp_state *state)
      43  {
      44  	switch (key) {
      45  		case ARGP_KEY_ARG:
      46  			if (path)
      47  				argp_usage (state);
      48  			path = arg;
      49  			return 0;
      50  		case ARGP_KEY_NO_ARGS:
      51  			argp_usage (state);
      52  			break;
      53  	}
      54  	return ARGP_ERR_UNKNOWN;
      55  }
      56  
      57  static struct argp argp = { NULL, parse_opt, args_doc };
      58  
      59  int main (int argc, char **argv)
      60  {
      61  	struct stat st;
      62  	struct timespec ts;
      63  
      64  	set_program_name (argv[0]);
      65  
      66  	if (argp_parse (&argp, argc, argv, 0, 0, 0))
      67  		exit (FAIL);
      68  
      69  	if (lstat (path, &st) < 0)
      70  		fatal (errno, "can't lstat %s", path);
      71  	ts = get_stat_mtime (&st);
      72  	printf ("%ld.%09ld\n", (long) ts.tv_sec, ts.tv_nsec);
      73  
      74  	exit (OK);
      75  }