Annotation of src/usr.bin/basename/basename.c, Revision 1.10
1.10 ! deraadt 1: /* $OpenBSD: basename.c,v 1.9 2009/10/27 23:59:36 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: basename.c,v 1.9 1995/09/02 05:29:46 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 1991, 1993, 1994
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.5 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
1.7 otto 33: #include <err.h>
34: #include <libgen.h>
1.1 deraadt 35: #include <stdio.h>
36: #include <stdlib.h>
37: #include <string.h>
38: #include <locale.h>
39: #include <unistd.h>
40:
1.4 millert 41: void usage(void);
1.1 deraadt 42:
43: int
1.6 deraadt 44: main(int argc, char *argv[])
1.1 deraadt 45: {
1.7 otto 46: int ch;
1.1 deraadt 47: char *p;
48:
49: setlocale(LC_ALL, "");
1.10 ! deraadt 50:
! 51: if (tame("stdio", NULL) == -1)
! 52: err(1, "tame");
1.1 deraadt 53:
1.7 otto 54: while ((ch = getopt(argc, argv, "")) != -1) {
55: switch (ch) {
56: default:
57: usage();
1.1 deraadt 58: }
59: }
1.7 otto 60: argc -= optind;
61: argv += optind;
1.1 deraadt 62:
1.7 otto 63: if (argc != 1 && argc != 2)
64: usage();
1.1 deraadt 65:
1.8 otto 66: if (**argv == '\0') {
67: (void)puts("");
68: exit(0);
69: }
1.7 otto 70: p = basename(*argv);
71: if (p == NULL)
72: err(1, "%s", *argv);
1.1 deraadt 73: /*
1.7 otto 74: * If the suffix operand is present, is not identical to the
75: * characters remaining in string, and is identical to a suffix
76: * of the characters remaining in string, the suffix suffix
77: * shall be removed from string.
1.1 deraadt 78: */
79: if (*++argv) {
1.7 otto 80: size_t suffixlen, stringlen, off;
1.1 deraadt 81:
82: suffixlen = strlen(*argv);
83: stringlen = strlen(p);
84:
85: if (suffixlen < stringlen) {
86: off = stringlen - suffixlen;
87: if (!strcmp(p + off, *argv))
88: p[off] = '\0';
89: }
90: }
1.3 millert 91: (void)puts(p);
1.1 deraadt 92: exit(0);
93: }
94:
1.7 otto 95: extern char *__progname;
1.1 deraadt 96: void
1.6 deraadt 97: usage(void)
1.1 deraadt 98: {
99:
1.7 otto 100: (void)fprintf(stderr, "usage: %s string [suffix]\n", __progname);
1.1 deraadt 101: exit(1);
102: }