1 /* File names on MS-DOS/Windows systems. 2 3 Copyright (C) 2000-2001, 2004-2006, 2009-2012 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_ */ 54
