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      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 *
     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 *
     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 *
     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