hush/libbb/get_last_path_component.c

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/* vi: set sw=4 ts=4: */
/*
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* bb_get_last_path_component implementation for busybox
*
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* Copyright (C) 2001 Manuel Novoa III <mjn3@codepoet.org>
*
* 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 of the License, 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
*
*/
/* Set to 1 if you want basename() behavior for NULL or "". */
/* WARNING!!! Doing so will break basename applet at least! */
#define EMULATE_BASENAME 0
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char *bb_get_last_path_component(char *path)
{
#if EMULATE_BASENAME
static const char null_or_empty[] = ".";
#endif
char *first = path;
char *last;
#if EMULATE_BASENAME
if (!path || !*path) {
return (char *) null_or_empty;
}
#endif
last = path - 1;
while (*path) {
if ((*path != '/') && (path > ++last)) {
last = first = path;
}
++path;
}
if (*first == '/') {
last = first;
}
last[1] = 0;
return first;
}