summaryrefslogtreecommitdiff
path: root/src/basename.c
blob: 79fdd091eca8372ea2203fd828c56023c872722b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/* basename -- strip directory and suffix from filenames
   Copyright (C) 1990-1997, 1999-2004 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/* Usage: basename name [suffix]
   NAME is a pathname; SUFFIX is a suffix to strip from it.

   basename /usr/foo/lossage/functions.l
   => functions.l
   basename /usr/foo/lossage/functions.l .l
   => functions
   basename functions.lisp p
   => functions.lis */

#include <config.h>
#include <getopt.h>
#include <stdio.h>
#include <sys/types.h>

#include "system.h"
#include "long-options.h"
#include "dirname.h"
#include "error.h"
#include "quote.h"

/* The official name of this program (e.g., no `g' prefix).  */
#define PROGRAM_NAME "basename"

#define AUTHORS "FIXME unknown"

/* The name this program was run with. */
char *program_name;

void
usage (int status)
{
  if (status != EXIT_SUCCESS)
    fprintf (stderr, _("Try `%s --help' for more information.\n"),
	     program_name);
  else
    {
      printf (_("\
Usage: %s NAME [SUFFIX]\n\
  or:  %s OPTION\n\
"),
	      program_name, program_name);
      fputs (_("\
Print NAME with any leading directory components removed.\n\
If specified, also remove a trailing SUFFIX.\n\
\n\
"), stdout);
      fputs (HELP_OPTION_DESCRIPTION, stdout);
      fputs (VERSION_OPTION_DESCRIPTION, stdout);
      printf (_("\nReport bugs to <%s>.\n"), PACKAGE_BUGREPORT);
    }
  exit (status);
}

/* Remove SUFFIX from the end of NAME if it is there, unless NAME
   consists entirely of SUFFIX. */

static void
remove_suffix (char *name, const char *suffix)
{
  char *np;
  const char *sp;

  np = name + strlen (name);
  sp = suffix + strlen (suffix);

  while (np > name && sp > suffix)
    if (*--np != *--sp)
      return;
  if (np > name)
    *np = '\0';
}

int
main (int argc, char **argv)
{
  char *name;

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

  atexit (close_stdout);

  parse_long_options (argc, argv, PROGRAM_NAME, GNU_PACKAGE, VERSION,
		      usage, AUTHORS, (char const *) NULL);
  if (getopt (argc, argv, "+") != -1)
    usage (EXIT_FAILURE);

  if (argc < optind + 1)
    {
      error (0, 0, _("missing operand"));
      usage (EXIT_FAILURE);
    }

  if (optind + 2 < argc)
    {
      error (0, 0, _("extra operand %s"), quote (argv[optind + 2]));
      usage (EXIT_FAILURE);
    }

  name = base_name (argv[optind]);
  name[base_len (name)] = '\0';

  if (argc == optind + 2)
    remove_suffix (name, argv[optind + 1]);

  puts (name);

  exit (EXIT_SUCCESS);
}