1 /*-
2 * Copyright (c) 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #ifndef lint
31 static const char copyright[] =
32 "@(#) Copyright (c) 1991, 1993, 1994\n\
33 The Regents of the University of California. All rights reserved.\n";
34 #endif
35
36 #if 0
37 #ifndef lint
38 static char sccsid[] = "@(#)basename.c 8.4 (Berkeley) 5/4/95";
39 #endif /* not lint */
40 #endif
41
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
44
45 #include <err.h>
46 #include <libgen.h>
47 #include <limits.h>
48 #include <locale.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52 #include <unistd.h>
53 #include <wchar.h>
54
55 void stripsuffix(char *, const char *, size_t);
56 void usage(void);
57
58 int
main(int argc,char ** argv)59 main(int argc, char **argv)
60 {
61 char *p, *suffix;
62 size_t suffixlen;
63 int aflag, ch;
64
65 setlocale(LC_ALL, "");
66
67 aflag = 0;
68 suffix = NULL;
69 suffixlen = 0;
70
71 while ((ch = getopt(argc, argv, "as:")) != -1)
72 switch(ch) {
73 case 'a':
74 aflag = 1;
75 break;
76 case 's':
77 suffix = optarg;
78 break;
79 case '?':
80 default:
81 usage();
82 }
83 argc -= optind;
84 argv += optind;
85
86 if (argc < 1)
87 usage();
88
89 if (!*argv[0]) {
90 printf("\n");
91 exit(0);
92 }
93 if ((p = basename(argv[0])) == NULL)
94 err(1, "%s", argv[0]);
95 if ((suffix == NULL && !aflag) && argc == 2) {
96 suffix = argv[1];
97 argc--;
98 }
99 if (suffix != NULL)
100 suffixlen = strlen(suffix);
101 while (argc--) {
102 if ((p = basename(*argv)) == NULL)
103 err(1, "%s", argv[0]);
104 stripsuffix(p, suffix, suffixlen);
105 argv++;
106 (void)printf("%s\n", p);
107 }
108 exit(0);
109 }
110
111 void
stripsuffix(char * p,const char * suffix,size_t suffixlen)112 stripsuffix(char *p, const char *suffix, size_t suffixlen)
113 {
114 char *q, *r;
115 mbstate_t mbs;
116 size_t n;
117
118 if (suffixlen && (q = strchr(p, '\0') - suffixlen) > p &&
119 strcmp(suffix, q) == 0) {
120 /* Ensure that the match occurred on a character boundary. */
121 memset(&mbs, 0, sizeof(mbs));
122 for (r = p; r < q; r += n) {
123 n = mbrlen(r, MB_LEN_MAX, &mbs);
124 if (n == (size_t)-1 || n == (size_t)-2) {
125 memset(&mbs, 0, sizeof(mbs));
126 n = 1;
127 }
128 }
129 /* Chop off the suffix. */
130 if (q == r)
131 *q = '\0';
132 }
133 }
134
135 void
usage(void)136 usage(void)
137 {
138
139 (void)fprintf(stderr,
140 "usage: basename string [suffix]\n"
141 " basename [-a] [-s suffix] string [...]\n");
142 exit(1);
143 }
144