1 /* Take file names apart into directory and base names. 2 3 Copyright (C) 1998, 2001, 2003-2006, 2009-2010 Free Software Foundation, 4 Inc. 5 6 This program is free software: you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19 #ifndef DIRNAME_H_ 20 # define DIRNAME_H_ 1 21 22 # include <stdbool.h> 23 # include <stddef.h> 24 25 # ifndef DIRECTORY_SEPARATOR 26 # define DIRECTORY_SEPARATOR '/' 27 # endif 28 29 # ifndef ISSLASH 30 # define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR) 31 # endif 32 33 # ifndef FILE_SYSTEM_PREFIX_LEN 34 # if FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX 35 /* This internal macro assumes ASCII, but all hosts that support drive 36 letters use ASCII. */ 37 # define _IS_DRIVE_LETTER(c) (((unsigned int) (c) | ('a' - 'A')) - 'a' \ 38 <= 'z' - 'a') 39 # define FILE_SYSTEM_PREFIX_LEN(Filename) \ 40 (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0) 41 # else 42 # define FILE_SYSTEM_PREFIX_LEN(Filename) 0 43 # endif 44 # endif 45 46 # ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 47 # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0 48 # endif 49 50 # ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT 51 # define DOUBLE_SLASH_IS_DISTINCT_ROOT 0 52 # endif 53 54 # if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 55 # define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)]) 56 # else 57 # define IS_ABSOLUTE_FILE_NAME(F) \ 58 (ISSLASH ((F)[0]) || 0 < FILE_SYSTEM_PREFIX_LEN (F)) 59 # endif 60 # define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F)) 61 62 # if GNULIB_DIRNAME 63 char *base_name (char const *file); 64 char *dir_name (char const *file); 65 # endif 66 67 char *mdir_name (char const *file); 68 size_t base_len (char const *file); 69 size_t dir_len (char const *file); 70 char *last_component (char const *file); 71 72 bool strip_trailing_slashes (char *file); 73 74 #endif /* not DIRNAME_H_ */ 75