mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-23 10:34:07 +00:00
035f5aaa91
2015-01-01 version-etc: new year
54 lines
2.0 KiB
C
54 lines
2.0 KiB
C
/* File names on MS-DOS/Windows systems.
|
|
|
|
Copyright (C) 2000-2001, 2004-2006, 2009-2015 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 <http://www.gnu.org/licenses/>.
|
|
|
|
From Paul Eggert and Jim Meyering. */
|
|
|
|
#ifndef _DOSNAME_H
|
|
#define _DOSNAME_H
|
|
|
|
#if (defined _WIN32 || defined __WIN32__ || \
|
|
defined __MSDOS__ || defined __CYGWIN__ || \
|
|
defined __EMX__ || 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_ */
|