| 1 | /* File names on MS-DOS/Windows systems.
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| 2 |
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| 3 | Copyright (C) 2000-2001, 2004-2006, 2009-2012 Free Software Foundation, Inc.
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| 4 |
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| 5 | This program is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 3 of the License, or
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| 8 | (at your option) any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 17 |
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| 18 | From Paul Eggert and Jim Meyering. */
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| 19 |
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| 20 | #ifndef _DOSNAME_H
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| 21 | #define _DOSNAME_H
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| 22 |
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| 23 | #if (defined _WIN32 || defined __WIN32__ || \
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| 24 | defined __MSDOS__ || defined __CYGWIN__ || \
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| 25 | defined __EMX__ || defined __DJGPP__)
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| 26 | /* This internal macro assumes ASCII, but all hosts that support drive
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| 27 | letters use ASCII. */
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| 28 | # define _IS_DRIVE_LETTER(C) (((unsigned int) (C) | ('a' - 'A')) - 'a' \
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| 29 | <= 'z' - 'a')
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| 30 | # define FILE_SYSTEM_PREFIX_LEN(Filename) \
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| 31 | (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0)
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| 32 | # ifndef __CYGWIN__
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| 33 | # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
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| 34 | # endif
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| 35 | # define ISSLASH(C) ((C) == '/' || (C) == '\\')
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| 36 | #else
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| 37 | # define FILE_SYSTEM_PREFIX_LEN(Filename) 0
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| 38 | # define ISSLASH(C) ((C) == '/')
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| 39 | #endif
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| 40 |
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| 41 | #ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
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| 42 | # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
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| 43 | #endif
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| 44 |
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| 45 | #if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
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| 46 | # define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)])
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| 47 | # else
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| 48 | # define IS_ABSOLUTE_FILE_NAME(F) \
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| 49 | (ISSLASH ((F)[0]) || FILE_SYSTEM_PREFIX_LEN (F) != 0)
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| 50 | #endif
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| 51 | #define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F))
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| 52 |
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| 53 | #endif /* DOSNAME_H_ */
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