dhcpd-pools  2.28
ISC dhcpd lease usage analyser
dosname.h
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1 /* File names on MS-DOS/Windows systems.
2 
3  Copyright (C) 2000-2001, 2004-2006, 2009-2015 Free Software Foundation, Inc.
4 
5  This program is free software: you can redistribute it and/or modify
6  it under the terms of the GNU General Public License as published by
7  the Free Software Foundation; either version 3 of the License, or
8  (at your option) any later version.
9 
10  This program is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  GNU General Public License for more details.
14 
15  You should have received a copy of the GNU General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  From Paul Eggert and Jim Meyering. */
19 
20 #ifndef _DOSNAME_H
21 #define _DOSNAME_H
22 
23 #if (defined _WIN32 || defined __WIN32__ || \
24  defined __MSDOS__ || defined __CYGWIN__ || \
25  defined __EMX__ || defined __DJGPP__)
26  /* This internal macro assumes ASCII, but all hosts that support drive
27  letters use ASCII. */
28 # define _IS_DRIVE_LETTER(C) (((unsigned int) (C) | ('a' - 'A')) - 'a' \
29  <= 'z' - 'a')
30 # define FILE_SYSTEM_PREFIX_LEN(Filename) \
31  (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0)
32 # ifndef __CYGWIN__
33 # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 1
34 # endif
35 # define ISSLASH(C) ((C) == '/' || (C) == '\\')
36 #else
37 # define FILE_SYSTEM_PREFIX_LEN(Filename) 0
38 # define ISSLASH(C) ((C) == '/')
39 #endif
40 
41 #ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
42 # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
43 #endif
44 
45 #if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
46 # define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)])
47 # else
48 # define IS_ABSOLUTE_FILE_NAME(F) \
49  (ISSLASH ((F)[0]) || FILE_SYSTEM_PREFIX_LEN (F) != 0)
50 #endif
51 #define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F))
52 
53 #endif /* DOSNAME_H_ */