1 /* dirname.c -- return all but the last element in a path
2 Copyright (C) 1990, 1998 Free Software Foundation, Inc.
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)
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.
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. */
27 #if defined STDC_HEADERS || defined HAVE_STRING_H
32 # define strrchr rindex
38 #if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
39 # define IN_CTYPE_DOMAIN(c) 1
41 # define IN_CTYPE_DOMAIN(c) isascii(c)
43 #define ISALPHA(Ch) (IN_CTYPE_DOMAIN (Ch) && isalpha (Ch))
45 /* Return the leading directories part of PATH,
46 allocated with malloc. If out of memory, return 0.
47 Assumes that trailing slashes have already been
56 int length; /* Length of result, not including NUL. */
58 slash = strrchr (path, '/');
61 /* File is in the current directory. */
70 /* If canonicalized "d:/path", leave alone the root case "d:/". */
71 lim = (ISALPHA (path[0]) && path[1] == ':') ? path + 2 : path;
74 /* Remove any trailing slashes from the result. */
75 while (slash > path && *slash == '/')
78 length = slash - path + 1;
80 newpath = (char *) malloc (length + 1);
83 strncpy (newpath, path, length);