| 1 | /* Basic filename support macros. |
| 2 | Copyright (C) 2001-2004, 2007-2020 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 |
| 21 | extern "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 */ |