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
131
132
133
134
135
136
|
/* dirname -- strip suffix from file name
Copyright (C) 1990-2022 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 3 of the License, 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, see <https://www.gnu.org/licenses/>. */
/* Written by David MacKenzie and Jim Meyering. */
#include <config.h>
#include <getopt.h>
#include <stdio.h>
#include <sys/types.h>
#include "system.h"
#include "error.h"
/* The official name of this program (e.g., no 'g' prefix). */
#define PROGRAM_NAME "dirname"
#define AUTHORS \
proper_name ("David MacKenzie"), \
proper_name ("Jim Meyering")
static struct option const longopts[] =
{
{"zero", no_argument, NULL, 'z'},
{GETOPT_HELP_OPTION_DECL},
{GETOPT_VERSION_OPTION_DECL},
{NULL, 0, NULL, 0}
};
void
usage (int status)
{
if (status != EXIT_SUCCESS)
emit_try_help ();
else
{
printf (_("\
Usage: %s [OPTION] NAME...\n\
"),
program_name);
fputs (_("\
Output each NAME with its last non-slash component and trailing slashes\n\
removed; if NAME contains no /'s, output '.' (meaning the current directory).\n\
\n\
"), stdout);
fputs (_("\
-z, --zero end each output line with NUL, not newline\n\
"), stdout);
fputs (HELP_OPTION_DESCRIPTION, stdout);
fputs (VERSION_OPTION_DESCRIPTION, stdout);
printf (_("\
\n\
Examples:\n\
%s /usr/bin/ -> \"/usr\"\n\
%s dir1/str dir2/str -> \"dir1\" followed by \"dir2\"\n\
%s stdio.h -> \".\"\n\
"),
program_name, program_name, program_name);
emit_ancillary_info (PROGRAM_NAME);
}
exit (status);
}
int
main (int argc, char **argv)
{
static char const dot = '.';
bool use_nuls = false;
char const *result;
size_t len;
initialize_main (&argc, &argv);
set_program_name (argv[0]);
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
atexit (close_stdout);
while (true)
{
int c = getopt_long (argc, argv, "z", longopts, NULL);
if (c == -1)
break;
switch (c)
{
case 'z':
use_nuls = true;
break;
case_GETOPT_HELP_CHAR;
case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
default:
usage (EXIT_FAILURE);
}
}
if (argc < optind + 1)
{
error (0, 0, _("missing operand"));
usage (EXIT_FAILURE);
}
for (; optind < argc; optind++)
{
result = argv[optind];
len = dir_len (result);
if (! len)
{
result = ˙
len = 1;
}
fwrite (result, 1, len, stdout);
putchar (use_nuls ? '\0' :'\n');
}
return EXIT_SUCCESS;
}
|
