Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libc/gen/basename.c	Lines:	12	21	57.1 %
Date:	2017-11-07	Branches:	9	18	50.0 %


/*	$OpenBSD: basename.c,v 1.15 2013/09/30 12:02:32 millert Exp $	*/

/*
 * Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <errno.h>
#include <libgen.h>
#include <limits.h>
#include <string.h>

char *
basename(const char *path)
{
	static char bname[PATH_MAX];
	size_t len;
	const char *endp, *startp;

	/* Empty or NULL string gets treated as "." */
	if (path == NULL || *path == '\0') {
		bname[0] = '.';
		bname[1] = '\0';
		return (bname);
	}

	/* Strip any trailing slashes */
	endp = path + strlen(path) - 1;
	while (endp > path && *endp == '/')
		endp--;

	/* All slashes becomes "/" */
	if (endp == path && *endp == '/') {
		bname[0] = '/';
		bname[1] = '\0';
		return (bname);
	}

	/* Find the start of the base */
	startp = endp;
	while (startp > path && *(startp - 1) != '/')
		startp--;

	len = endp - startp + 1;
	if (len >= sizeof(bname)) {
		errno = ENAMETOOLONG;
		return (NULL);
	}
	memcpy(bname, startp, len);
	bname[len] = '\0';
	return (bname);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: basename.c,v 1.15 2013/09/30 12:02:32 millert Exp $ */
2
3			/*
4			* Copyright (c) 1997, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <errno.h>
20			#include <libgen.h>
21			#include <limits.h>
22			#include <string.h>
23
24			char *
25			basename(const char *path)
26			{
27			static char bname[PATH_MAX];
28			size_t len;
29			const char endp, startp;
30
31			/* Empty or NULL string gets treated as "." */
32	✓✗✗✓	78	if (path == NULL \|\| *path == '\0') {
33			bname[0] = '.';
34			bname[1] = '\0';
35			return (bname);
36			}
37
38			/* Strip any trailing slashes */
39		26	endp = path + strlen(path) - 1;
40	✓✗✗✓	104	while (endp > path && *endp == '/')
41			endp--;
42
43			/* All slashes becomes "/" */
44	✗✓✗✗	26	if (endp == path && *endp == '/') {
45			bname[0] = '/';
46			bname[1] = '\0';
47			return (bname);
48			}
49
50			/* Find the start of the base */
51			startp = endp;
52	✓✗✓✓	642	while (startp > path && *(startp - 1) != '/')
53		188	startp--;
54
55		26	len = endp - startp + 1;
56	✗✓	26	if (len >= sizeof(bname)) {
57			errno = ENAMETOOLONG;
58			return (NULL);
59			}
60		26	memcpy(bname, startp, len);
61		26	bname[len] = '\0';
62		26	return (bname);
63		26	}