Line data    Source code

       1             : /* link utility for GNU.
       2             :    Copyright (C) 2001, 2002, 2004, 2007 Free Software Foundation, Inc.
       3             : 
       4             :    This program is free software: you can redistribute it and/or modify
       5             :    it under the terms of the GNU General Public License as published by
       6             :    the Free Software Foundation, either version 3 of the License, or
       7             :    (at your option) any later version.
       8             : 
       9             :    This program is distributed in the hope that it will be useful,
      10             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :    GNU General Public License for more details.
      13             : 
      14             :    You should have received a copy of the GNU General Public License
      15             :    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
      16             : 
      17             : /* Written by Michael Stone */
      18             : 
      19             : /* Implementation overview:
      20             : 
      21             :    Simply call the system 'link' function */
      22             : 
      23             : #include <config.h>
      24             : #include <stdio.h>
      25             : #include <getopt.h>
      26             : #include <sys/types.h>
      27             : 
      28             : #include "system.h"
      29             : #include "error.h"
      30             : #include "long-options.h"
      31             : #include "quote.h"
      32             : 
      33             : /* The official name of this program (e.g., no `g' prefix).  */
      34             : #define PROGRAM_NAME "link"
      35             : 
      36             : #define AUTHORS "Michael Stone"
      37             : 
      38             : /* Name this program was run with.  */
      39             : char *program_name;
      40             : 
      41             : void
      42          29 : usage (int status)
      43             : {
      44          29 :   if (status != EXIT_SUCCESS)
      45          27 :     fprintf (stderr, _("Try `%s --help' for more information.\n"),
      46             :              program_name);
      47             :   else
      48             :     {
      49           2 :       printf (_("\
      50             : Usage: %s FILE1 FILE2\n\
      51             :   or:  %s OPTION\n"), program_name, program_name);
      52           2 :       fputs (_("Call the link function to create a link named FILE2\
      53             :  to an existing FILE1.\n\n"),
      54             :              stdout);
      55           2 :       fputs (HELP_OPTION_DESCRIPTION, stdout);
      56           2 :       fputs (VERSION_OPTION_DESCRIPTION, stdout);
      57           2 :       emit_bug_reporting_address ();
      58             :     }
      59          29 :   exit (status);
      60             : }
      61             : 
      62             : int
      63          40 : main (int argc, char **argv)
      64             : {
      65             :   initialize_main (&argc, &argv);
      66          40 :   program_name = argv[0];
      67          40 :   setlocale (LC_ALL, "");
      68             :   bindtextdomain (PACKAGE, LOCALEDIR);
      69             :   textdomain (PACKAGE);
      70             : 
      71          40 :   atexit (close_stdout);
      72             : 
      73          40 :   parse_long_options (argc, argv, PROGRAM_NAME, PACKAGE_NAME, VERSION,
      74             :                       usage, AUTHORS, (char const *) NULL);
      75          37 :   if (getopt_long (argc, argv, "", NULL, NULL) != -1)
      76           6 :     usage (EXIT_FAILURE);
      77             : 
      78          31 :   if (argc < optind + 2)
      79             :     {
      80          17 :       if (argc < optind + 1)
      81           2 :         error (0, 0, _("missing operand"));
      82             :       else
      83          15 :         error (0, 0, _("missing operand after %s"), quote (argv[optind]));
      84          17 :       usage (EXIT_FAILURE);
      85             :     }
      86             : 
      87          14 :   if (optind + 2 < argc)
      88             :     {
      89           4 :       error (0, 0, _("extra operand %s"), quote (argv[optind + 2]));
      90           4 :       usage (EXIT_FAILURE);
      91             :     }
      92             : 
      93          10 :   if (link (argv[optind], argv[optind + 1]) != 0)
      94          18 :     error (EXIT_FAILURE, errno, _("cannot create link %s to %s"),
      95          18 :            quote_n (0, argv[optind + 1]), quote_n (1, argv[optind]));
      96             : 
      97           1 :   exit (EXIT_SUCCESS);
      98             : }