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53 lines
2.0 KiB
53 lines
2.0 KiB
/* File names on MS-DOS/Windows systems. |
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Copyright (C) 2000-2001, 2004-2006, 2009-2017 Free Software Foundation, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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From Paul Eggert and Jim Meyering. */ |
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#ifndef _DOSNAME_H |
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#define _DOSNAME_H |
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#if (defined _WIN32 || defined __WIN32__ || \ |
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defined __MSDOS__ || defined __CYGWIN__ || \ |
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defined __EMX__ || defined __DJGPP__) |
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/* This internal macro assumes ASCII, but all hosts that support drive |
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letters use ASCII. */ |
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# define _IS_DRIVE_LETTER(C) (((unsigned int) (C) | ('a' - 'A')) - 'a' \ |
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<= 'z' - 'a') |
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# define FILE_SYSTEM_PREFIX_LEN(Filename) \ |
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(_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0) |
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# ifndef __CYGWIN__ |
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# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1 |
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# endif |
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# define ISSLASH(C) ((C) == '/' || (C) == '\\') |
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#else |
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# define FILE_SYSTEM_PREFIX_LEN(Filename) 0 |
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# define ISSLASH(C) ((C) == '/') |
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#endif |
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#ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE |
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# define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0 |
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#endif |
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#if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE |
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# define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)]) |
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# else |
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# define IS_ABSOLUTE_FILE_NAME(F) \ |
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(ISSLASH ((F)[0]) || FILE_SYSTEM_PREFIX_LEN (F) != 0) |
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#endif |
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#define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F)) |
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#endif /* DOSNAME_H_ */
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