1/* Libiberty basename. Like basename, but is not overridden by the
2 system C library.
3 Copyright (C) 2001-2023 Free Software Foundation, Inc.
4
5This file is part of the libiberty library.
6Libiberty is free software; you can redistribute it and/or
7modify it under the terms of the GNU Library General Public
8License as published by the Free Software Foundation; either
9version 2 of the License, or (at your option) any later version.
10
11Libiberty is distributed in the hope that it will be useful,
12but WITHOUT ANY WARRANTY; without even the implied warranty of
13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14Library General Public License for more details.
15
16You should have received a copy of the GNU Library General Public
17License along with libiberty; see the file COPYING.LIB. If
18not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
19Boston, MA 02110-1301, USA. */
20
21/*
22
23@deftypefn Replacement {const char*} lbasename (const char *@var{name})
24
25Given a pointer to a string containing a typical pathname
26(@samp{/usr/src/cmd/ls/ls.c} for example), returns a pointer to the
27last component of the pathname (@samp{ls.c} in this case). The
28returned pointer is guaranteed to lie within the original
29string. This latter fact is not true of many vendor C
30libraries, which return special strings or modify the passed
31strings for particular input.
32
33In particular, the empty string returns the same empty string,
34and a path ending in @code{/} returns the empty string after it.
35
36@end deftypefn
37
38*/
39
40#ifdef HAVE_CONFIG_H
41#include "config.h"
42#endif
43#include "ansidecl.h"
44#include "libiberty.h"
45#include "safe-ctype.h"
46#include "filenames.h"
47
48const char *
49unix_lbasename (const char *name)
50{
51 const char *base;
52
53 for (base = name; *name; name++)
54 if (IS_UNIX_DIR_SEPARATOR (*name))
55 base = name + 1;
56
57 return base;
58}
59
60const char *
61dos_lbasename (const char *name)
62{
63 const char *base;
64
65 /* Skip over a possible disk name. */
66 if (ISALPHA (name[0]) && name[1] == ':')
67 name += 2;
68
69 for (base = name; *name; name++)
70 if (IS_DOS_DIR_SEPARATOR (*name))
71 base = name + 1;
72
73 return base;
74}
75
76const char *
77lbasename (const char *name)
78{
79#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
80 return dos_lbasename (name);
81#else
82 return unix_lbasename (name);
83#endif
84}
85

source code of libiberty/lbasename.c