| 1 | /* Take file names apart into directory and base names.
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| 2 |
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| 3 | Copyright (C) 1998, 2001, 2003-2006 Free Software Foundation, Inc.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, write to the Free Software Foundation,
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| 17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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| 18 |
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| 19 | #ifndef DIRNAME_H_
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| 20 | # define DIRNAME_H_ 1
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| 21 |
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| 22 | # include <stdbool.h>
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| 23 | # include <stddef.h>
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| 24 |
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| 25 | # ifndef DIRECTORY_SEPARATOR
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| 26 | # define DIRECTORY_SEPARATOR '/'
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| 27 | # endif
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| 28 |
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| 29 | # ifndef ISSLASH
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| 30 | # define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
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| 31 | # endif
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| 32 |
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| 33 | # ifndef FILE_SYSTEM_PREFIX_LEN
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| 34 | # if FILE_SYSTEM_ACCEPTS_DRIVE_LETTER_PREFIX
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| 35 | /* This internal macro assumes ASCII, but all hosts that support drive
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| 36 | letters use ASCII. */
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| 37 | # define _IS_DRIVE_LETTER(c) (((unsigned int) (c) | ('a' - 'A')) - 'a' \
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| 38 | <= 'z' - 'a')
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| 39 | # define FILE_SYSTEM_PREFIX_LEN(Filename) \
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| 40 | (_IS_DRIVE_LETTER ((Filename)[0]) && (Filename)[1] == ':' ? 2 : 0)
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| 41 | # else
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| 42 | # define FILE_SYSTEM_PREFIX_LEN(Filename) 0
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| 43 | # endif
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| 44 | # endif
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| 45 |
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| 46 | # ifndef FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
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| 47 | # define FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE 0
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| 48 | # endif
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| 49 |
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| 50 | # ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
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| 51 | # define DOUBLE_SLASH_IS_DISTINCT_ROOT 1
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| 52 | # endif
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| 53 |
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| 54 | # if FILE_SYSTEM_DRIVE_PREFIX_CAN_BE_RELATIVE
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| 55 | # define IS_ABSOLUTE_FILE_NAME(F) ISSLASH ((F)[FILE_SYSTEM_PREFIX_LEN (F)])
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| 56 | # else
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| 57 | # define IS_ABSOLUTE_FILE_NAME(F) \
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| 58 | (ISSLASH ((F)[0]) || 0 < FILE_SYSTEM_PREFIX_LEN (F))
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| 59 | # endif
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| 60 | # define IS_RELATIVE_FILE_NAME(F) (! IS_ABSOLUTE_FILE_NAME (F))
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| 61 |
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| 62 | char *base_name (char const *file);
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| 63 | char *dir_name (char const *file);
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| 64 | size_t base_len (char const *file);
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| 65 | size_t dir_len (char const *file);
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| 66 | char *last_component (char const *file);
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| 67 |
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| 68 | bool strip_trailing_slashes (char *file);
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| 69 |
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| 70 | #endif /* not DIRNAME_H_ */
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