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[/] [or1k/] [tags/] [start/] [insight/] [libiberty/] [lbasename.c] - Rev 1780
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/* 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. */ /* NAME lbasename -- return pointer to last component of a pathname SYNOPSIS char *lbasename (const char *name) DESCRIPTION Given a pointer to a string containing a typical pathname (/usr/src/cmd/ls/ls.c for example), returns a pointer to the last component of the pathname ("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 '/' returns the empty string after it. */ #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 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 (char *) base; }
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