1/* basename.c -- return the last element in a path 2 Copyright (C) 1990, 1998, 1999 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 2, or (at your option) 7 any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program; if not, write to the Free Software Foundation, 16 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 17 18#if HAVE_CONFIG_H 19# include <config.h> 20#endif 21 22#ifndef FILESYSTEM_PREFIX_LEN 23# define FILESYSTEM_PREFIX_LEN(Filename) 0 24#endif 25 26#ifndef ISSLASH 27# define ISSLASH(C) ((C) == '/') 28#endif 29 30/* In general, we can't use the builtin `basename' function if available, 31 since it has different meanings in different environments. 32 In some environments the builtin `basename' modifies its argument. 33 If NAME is all slashes, be sure to return `/'. */ 34 35char * 36base_name (char const *name) 37{ 38 char const *base = name += FILESYSTEM_PREFIX_LEN (name); 39 int all_slashes = 1; 40 char const *p; 41 42 for (p = name; *p; p++) 43 { 44 if (ISSLASH (*p)) 45 base = p + 1; 46 else 47 all_slashes = 0; 48 } 49 50 /* If NAME is all slashes, arrange to return `/'. */ 51 if (*base == '\0' && ISSLASH (*name) && all_slashes) 52 --base; 53 54 return (char *) base; 55} 56