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
|
/* dirname -- strip filename suffix from pathname
Copyright (C) 1990, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Written by David MacKenzie and Jim Meyering. */
#include <stdio.h>
#include <sys/types.h>
#include <getopt.h>
#include "version.h"
#include "system.h"
void strip_trailing_slashes ();
/* The name this program was run with. */
char *program_name;
/* If non-zero, display usage information and exit. */
static int show_help;
/* If non-zero, print the version on standard output and exit. */
static int show_version;
static struct option const long_options[] =
{
{"help", no_argument, &show_help, 1},
{"version", no_argument, &show_version, 1},
{0, 0, 0, 0}
};
static void
usage ()
{
fprintf (stderr, "Usage: %s [{--help,--version}] path\n", program_name);
exit (1);
}
void
main (argc, argv)
int argc;
char **argv;
{
register char *path;
register char *slash;
int c;
program_name = argv[0];
while ((c = getopt_long (argc, argv, "", long_options, (int *) 0)) != EOF)
{
switch (c)
{
case 0:
break;
default:
usage ();
}
}
if (show_version)
{
printf ("%s\n", version_string);
exit (0);
}
if (show_help)
usage ();
if (argc - optind != 1)
usage ();
path = argv[optind];
strip_trailing_slashes (path);
slash = rindex (path, '/');
if (slash == NULL)
path = ".";
else
{
/* Remove any trailing slashes and final element. */
while (slash > path && *slash == '/')
--slash;
slash[1] = 0;
}
puts (path);
exit (0);
}
|
