1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <locale.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <unistd.h>
32 #include <libintl.h>
33
34 int
main(int argc,char ** argv)35 main(int argc, char **argv)
36 {
37 char *p;
38 char *string;
39
40 /*
41 * For better performance, defer the setlocale()/textdomain()
42 * calls until they get really required.
43 */
44 #if !defined(TEXT_DOMAIN)
45 #define TEXT_DOMAIN "SYS_TEST"
46 #endif
47 if (argc == 1) {
48 (void) puts(".");
49 return (0);
50 }
51 if (strcmp(argv[1], "--") == 0) {
52 argv++;
53 argc--;
54 if (argc == 1) {
55 (void) puts(".");
56 return (0);
57 }
58 }
59 if (argc > 2) {
60 (void) setlocale(LC_ALL, "");
61 (void) textdomain(TEXT_DOMAIN);
62 (void) fprintf(stderr, gettext("Usage: dirname [ path ]\n"));
63 return (1);
64 }
65
66 string = argv[1];
67
68 if (*string == '\0') {
69 (void) puts(".");
70 return (0);
71 }
72
73 /* remove trailing slashes */
74 p = string + strlen(string) - 1;
75 while (p >= string && *p == '/')
76 *p-- = '\0';
77
78 if (*string == '\0') {
79 /* string contained only slashes */
80 (void) puts("/");
81 return (0);
82 }
83
84 /* remove non-slashes */
85 while (p >= string && *p != '/')
86 *p-- = '\0';
87
88 if (*string == '\0') {
89 /* string did not begin with a slash */
90 (void) puts(".");
91 return (0);
92 }
93
94 /* remove slashes delimiting dirname and basename */
95 while (p >= string && *p == '/')
96 *p-- = '\0';
97
98 if (*string == '\0') {
99 /* no dirname part found */
100 (void) puts("/");
101 return (0);
102 }
103 /* now string points to dirname part */
104 (void) puts(string);
105 return (0);
106 }
107