mirror of git://gcc.gnu.org/git/gcc.git
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* Libiberty basename. Like basename, but is not overridden by the
|
|
system C library.
|
|
Copyright (C) 2001 Free Software Foundation, Inc.
|
|
|
|
This file is part of the libiberty library.
|
|
Libiberty is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
Libiberty 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with libiberty; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/*
|
|
|
|
@deftypefn Replacement {const char*} lbasename (const char *@var{name})
|
|
|
|
Given a pointer to a string containing a typical pathname
|
|
(@samp{/usr/src/cmd/ls/ls.c} for example), returns a pointer to the
|
|
last component of the pathname (@samp{ls.c} in this case). The
|
|
returned pointer is guaranteed to lie within the original
|
|
string. This latter fact is not true of many vendor C
|
|
libraries, which return special strings or modify the passed
|
|
strings for particular input.
|
|
|
|
In particular, the empty string returns the same empty string,
|
|
and a path ending in @code{/} returns the empty string after it.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
#include "ansidecl.h"
|
|
#include "libiberty.h"
|
|
#include "safe-ctype.h"
|
|
|
|
#ifndef DIR_SEPARATOR
|
|
# define DIR_SEPARATOR '/'
|
|
#endif
|
|
|
|
#if defined (_WIN32) || defined (__MSDOS__) \
|
|
|| defined (__DJGPP__) || defined (__OS2__)
|
|
# define HAVE_DOS_BASED_FILE_SYSTEM
|
|
# ifndef DIR_SEPARATOR_2
|
|
# define DIR_SEPARATOR_2 '\\'
|
|
# endif
|
|
#endif
|
|
|
|
/* Define IS_DIR_SEPARATOR. VMS uses '::', ':', '[...]' and '<...>' to
|
|
separate the different components of a file specification. It's a
|
|
bit of a stretch to call ':', ']' and '>' directory separators, so
|
|
just define the test to find the file name component. */
|
|
#ifdef VMS
|
|
# define IS_DIR_SEPARATOR(ch) ((ch) == ':' || (ch) == ']' || (ch) == '>')
|
|
#else
|
|
# ifndef DIR_SEPARATOR_2
|
|
# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
|
|
# else
|
|
# define IS_DIR_SEPARATOR(ch) \
|
|
(((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
|
|
# endif
|
|
#endif
|
|
|
|
const char *
|
|
lbasename (name)
|
|
const char *name;
|
|
{
|
|
const char *base;
|
|
|
|
#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
|
|
/* Skip over a possible disk name. */
|
|
if (ISALPHA (name[0]) && name[1] == ':')
|
|
name += 2;
|
|
#endif
|
|
|
|
for (base = name; *name; name++)
|
|
if (IS_DIR_SEPARATOR (*name))
|
|
base = name + 1;
|
|
|
|
return base;
|
|
}
|