1/* Basic filename support macros.
2 Copyright (C) 2001-2004, 2007-2019 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 3 of the License, or
7 (at your option) 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, see <https://www.gnu.org/licenses/>. */
16
17#ifndef _FILENAME_H
18#define _FILENAME_H
19
20#ifdef __cplusplus
21extern "C" {
22#endif
23
24
25/* Pathname support.
26 ISSLASH(C) tests whether C is a directory separator character.
27 IS_ABSOLUTE_PATH(P) tests whether P is an absolute path. If it is not,
28 it may be concatenated to a directory pathname.
29 IS_PATH_WITH_DIR(P) tests whether P contains a directory specification.
30 */
31#if defined _WIN32 || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
32 /* Native Windows, Cygwin, OS/2, DOS */
33# define ISSLASH(C) ((C) == '/' || (C) == '\\')
34# define HAS_DEVICE(P) \
35 ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) \
36 && (P)[1] == ':')
37# define IS_ABSOLUTE_PATH(P) (ISSLASH ((P)[0]) || HAS_DEVICE (P))
38# define IS_PATH_WITH_DIR(P) \
39 (strchr (P, '/') != NULL || strchr (P, '\\') != NULL || HAS_DEVICE (P))
40# define FILE_SYSTEM_PREFIX_LEN(P) (HAS_DEVICE (P) ? 2 : 0)
41#else
42 /* Unix */
43# define ISSLASH(C) ((C) == '/')
44# define IS_ABSOLUTE_PATH(P) ISSLASH ((P)[0])
45# define IS_PATH_WITH_DIR(P) (strchr (P, '/') != NULL)
46# define FILE_SYSTEM_PREFIX_LEN(P) 0
47#endif
48
49
50#ifdef __cplusplus
51}
52#endif
53
54#endif /* _FILENAME_H */
55