1 /* Take file names apart into directory and base names. 2 3 Copyright (C) 1998, 2001, 2003-2006 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 #ifndef DIRNAME_H_ 19 # define DIRNAME_H_ 1 20 21 # include <stdbool.h> 22 # include <stddef.h> 23 24 # ifndef DIRECTORY_SEPARATOR 25 # define DIRECTORY_SEPARATOR '/' 26 # endif 27 28 # ifndef ISSLASH 29 # define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR) 30 # endif 31 32 # ifndef FILE_SYSTEM_PREFIX_LEN 33 # if FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX 34 /* This internal macro assumes ASCII, but all hosts that support drive 35 letters use ASCII. */ 36 # define _IS_DRIVE_LETTER(c) (((unsigned int) (c) | ('a' - 'A')) - 'a' \ 37 <= 'z' - 'a') 38 # define FILE_SYSTEM_PREFIX_LEN(Filename) \ 39 (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0) 40 # else 41 # define FILE_SYSTEM_PREFIX_LEN(Filename) 0 42 # endif 43 # endif 44 45 # ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 46 # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0 47 # endif 48 49 # ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT 50 # define DOUBLE_SLASH_IS_DISTINCT_ROOT 0 51 # endif 52 53 # if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 54 # define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)]) 55 # else 56 # define IS_ABSOLUTE_FILE_NAME(F) \ 57 (ISSLASH ((F)[0]) || 0 < FILE_SYSTEM_PREFIX_LEN (F)) 58 # endif 59 # define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F)) 60 61 char *base_name (char const *file); 62 char *dir_name (char const *file); 63 size_t base_len (char const *file); 64 size_t dir_len (char const *file); 65 char *last_component (char const *file); 66 67 bool strip_trailing_slashes (char *file); 68 69 #endif /* not DIRNAME_H_ */ 70
