1 /* Libiberty basename. Like basename, but is not overridden by the
3 Copyright (C) 2001 Free Software Foundation, Inc.
5 This file is part of the libiberty library.
6 Libiberty is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public
8 License as published by the Free Software Foundation; either
9 version 2 of the License, or (at your option) any later version.
11 Libiberty is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with libiberty; see the file COPYING.LIB. If
18 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
23 lbasename -- return pointer to last component of a pathname
26 char *lbasename (const char *name)
29 Given a pointer to a string containing a typical pathname
30 (/usr/src/cmd/ls/ls.c for example), returns a pointer to the
31 last component of the pathname ("ls.c" in this case). The
32 returned pointer is guaranteed to lie within the original
33 string. This latter fact is not true of many vendor C
34 libraries, which return special strings or modify the passed
35 strings for particular input.
37 In particular, the empty string returns the same empty string,
38 and a path ending in '/' returns the empty string after it.
42 #include "libiberty.h"
43 #include "safe-ctype.h"
46 # define DIR_SEPARATOR '/'
49 #if defined (_WIN32) || defined (__MSDOS__) \
50 || defined (__DJGPP__) || defined (__OS2__)
51 # define HAVE_DOS_BASED_FILE_SYSTEM
52 # ifndef DIR_SEPARATOR_2
53 # define DIR_SEPARATOR_2 '\\'
57 /* Define IS_DIR_SEPARATOR. VMS uses '::', ':', '[...]' and '<...>' to
58 separate the different components of a file specification. It's a
59 bit of a stretch to call ':', ']' and '>' directory separators, so
60 just define the test to find the file name component. */
62 # define IS_DIR_SEPARATOR(ch) ((ch) == ':' || (ch) == ']' || (ch) == '>')
64 # ifndef DIR_SEPARATOR_2
65 # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
67 # define IS_DIR_SEPARATOR(ch) \
68 (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
78 #if defined (HAVE_DOS_BASED_FILE_SYSTEM)
79 /* Skip over a possible disk name. */
80 if (ISALPHA (name
[0]) && name
[1] == ':')
84 for (base
= name
; *name
; name
++)
85 if (IS_DIR_SEPARATOR (*name
))