| /* File names on MS-DOS/Windows systems. |
| |
| Copyright (C) 2000-2001, 2004-2006, 2009-2019 Free Software Foundation, Inc. |
| |
| This program is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. |
| |
| From Paul Eggert and Jim Meyering. */ |
| |
| #ifndef _DOSNAME_H |
| #define _DOSNAME_H |
| |
| #if (defined _WIN32 || defined __CYGWIN__ \ |
| || defined __EMX__ || defined __MSDOS__ || defined __DJGPP__) |
| /* This internal macro assumes ASCII, but all hosts that support drive |
| letters use ASCII. */ |
| # define _IS_DRIVE_LETTER(C) (((unsigned int) (C) | ('a' - 'A')) - 'a' \ |
| <= 'z' - 'a') |
| # define FILE_SYSTEM_PREFIX_LEN(Filename) \ |
| (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0) |
| # ifndef __CYGWIN__ |
| # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1 |
| # endif |
| # define ISSLASH(C) ((C) == '/' || (C) == '\\') |
| #else |
| # define FILE_SYSTEM_PREFIX_LEN(Filename) 0 |
| # define ISSLASH(C) ((C) == '/') |
| #endif |
| |
| #ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE |
| # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0 |
| #endif |
| |
| #if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE |
| # define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)]) |
| # else |
| # define IS_ABSOLUTE_FILE_NAME(F) \ |
| (ISSLASH ((F)[0]) || FILE_SYSTEM_PREFIX_LEN (F) != 0) |
| #endif |
| #define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F)) |
| |
| #endif /* DOSNAME_H_ */ |