| 1 | /* Extract the last component (base name) of a file name.
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| 2 |
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| 3 | Copyright (C) 1998, 2001, 2003-2006, 2009-2022 Free Software Foundation,
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| 4 | Inc.
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| 5 |
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| 6 | This file is free software: you can redistribute it and/or modify
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| 7 | it under the terms of the GNU Lesser General Public License as
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| 8 | published by the Free Software Foundation; either version 2.1 of the
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| 9 | License, or (at your option) any later version.
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| 10 |
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| 11 | This file is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU Lesser General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU Lesser General Public License
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| 17 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 18 |
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| 19 | #ifndef _BASENAME_LGPL_H
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| 20 | #define _BASENAME_LGPL_H
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| 21 |
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| 22 | #include <stddef.h>
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| 23 |
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| 24 | #ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
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| 25 | # define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
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| 26 | #endif
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| 27 |
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| 28 | #ifdef __cplusplus
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| 29 | extern "C" {
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| 30 | #endif
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| 31 |
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| 32 |
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| 33 | /* Return the address of the last file name component of FILENAME.
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| 34 | If FILENAME has some trailing slash(es), they are considered to be
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| 35 | part of the last component.
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| 36 | If FILENAME has no relative file name components because it is a file
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| 37 | system root, return the empty string.
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| 38 | Examples:
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| 39 | FILENAME RESULT
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| 40 | "foo.c" "foo.c"
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| 41 | "foo/bar.c" "bar.c"
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| 42 | "/foo/bar.c" "bar.c"
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| 43 | "foo/bar/" "bar/"
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| 44 | "foo/bar//" "bar//"
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| 45 | "/" ""
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| 46 | "//" ""
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| 47 | "" ""
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| 48 | The return value is a tail of the given FILENAME; do NOT free() it! */
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| 49 |
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| 50 | /* This function was traditionally called 'basename', but we avoid this
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| 51 | function name because
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| 52 | * Various platforms have different functions in their libc.
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| 53 | In particular, the glibc basename(), defined in <string.h>, does
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| 54 | not consider trailing slashes to be part of the component:
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| 55 | FILENAME RESULT
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| 56 | "foo/bar/" ""
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| 57 | "foo/bar//" ""
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| 58 | * The 'basename' command eliminates trailing slashes and for a root
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| 59 | produces a non-empty result:
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| 60 | FILENAME RESULT
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| 61 | "foo/bar/" "bar"
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| 62 | "foo/bar//" "bar"
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| 63 | "/" "/"
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| 64 | "//" "/"
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| 65 | */
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| 66 | extern char *last_component (char const *filename) _GL_ATTRIBUTE_PURE;
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| 67 |
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| 68 | /* Return the length of the basename FILENAME.
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| 69 | Typically FILENAME is the value returned by base_name or last_component.
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| 70 | Act like strlen (FILENAME), except omit all trailing slashes. */
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| 71 | extern size_t base_len (char const *filename) _GL_ATTRIBUTE_PURE;
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| 72 |
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| 73 |
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| 74 | #ifdef __cplusplus
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| 75 | } /* extern "C" */
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| 76 | #endif
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| 77 |
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| 78 | #endif /* _BASENAME_LGPL_H */
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