1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#pragma prototyped
23/*
24 * basename(3) implementation
25 */
26
27#include <ast_std.h>
28
29#if defined(__EXPORT__)
30#define extern	__EXPORT__
31#endif
32
33extern char *basename(register char *pathname)
34{
35	register char *first, *last;
36	for(first=last=pathname; *last; last++);
37	/* back over trailing '/' */
38	if(last>first)
39		while(*--last=='/' && last > first);
40	if(last==first && *last=='/')
41	{
42		/* all '/' or "" */
43		if(*first=='/')
44			if(*++last=='/')	/* keep leading // */
45				last++;
46	}
47	else
48	{
49		for(first=last++;first>pathname && *first!='/';first--);
50		if(*first=='/')
51			first++;
52	}
53	*last = 0;
54	return(first);
55}
56