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/* basename.c -- return the last element in a path
Copyright (C) 1990, 1998, 1999, 2000 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#ifndef FILESYSTEM_PREFIX_LEN
# define FILESYSTEM_PREFIX_LEN(Filename) 0
#endif
#ifndef PARAMS
# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
# define PARAMS(Args) Args
# else
# define PARAMS(Args) ()
# endif
#endif
#ifndef ISSLASH
# define ISSLASH(C) ((C) == '/')
#endif
char *base_name PARAMS ((char const *name));
/* In general, we can't use the builtin `basename' function if available,
since it has different meanings in different environments.
In some environments the builtin `basename' modifies its argument.
If NAME is all slashes, be sure to return `/'. */
char *
base_name (char const *name)
{
char const *base = name += FILESYSTEM_PREFIX_LEN (name);
int all_slashes = 1;
char const *p;
for (p = name; *p; p++)
{
if (ISSLASH (*p))
base = p + 1;
else
all_slashes = 0;
}
/* If NAME is all slashes, arrange to return `/'. */
if (*base == '\0' && ISSLASH (*name) && all_slashes)
--base;
/* Make sure the last byte is not a slash. */
assert (all_slashes || !ISSLASH (*(p - 1)));
return (char *) base;
}
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