1 /* Libiberty basename.  Like basename, but is not overridden by the
2    system C library.
3    Copyright (C) 2001, 2002, 2010 Free Software Foundation, Inc.
4 
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.
10 
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.
15 
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., 51 Franklin Street - Fifth Floor,
19 Boston, MA 02110-1301, USA.  */
20 
21 /*
22 
23 @deftypefn Replacement {const char*} lbasename (const char *@var{name})
24 
25 Given a pointer to a string containing a typical pathname
26 (@samp{/usr/src/cmd/ls/ls.c} for example), returns a pointer to the
27 last component of the pathname (@samp{ls.c} in this case).  The
28 returned pointer is guaranteed to lie within the original
29 string.  This latter fact is not true of many vendor C
30 libraries, which return special strings or modify the passed
31 strings for particular input.
32 
33 In particular, the empty string returns the same empty string,
34 and 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 
48 const char *
unix_lbasename(const char * name)49 unix_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 
60 const char *
dos_lbasename(const char * name)61 dos_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 
76 const char *
lbasename(const char * name)77 lbasename (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