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+/* Extract the last component (base name) of a file name.
+
+ Copyright (C) 1998, 2001, 2003-2006, 2009-2021 Free Software Foundation,
+ Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+#ifndef _BASENAME_LGPL_H
+#define _BASENAME_LGPL_H
+
+#include <stddef.h>
+
+#ifndef DOUBLE_SLASH_IS_DISTINCT_ROOT
+# define DOUBLE_SLASH_IS_DISTINCT_ROOT 0
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Return the address of the last file name component of FILENAME.
+ If FILENAME has some trailing slash(es), they are considered to be
+ part of the last component.
+ If FILENAME has no relative file name components because it is a file
+ system root, return the empty string.
+ Examples:
+ FILENAME RESULT
+ "foo.c" "foo.c"
+ "foo/bar.c" "bar.c"
+ "/foo/bar.c" "bar.c"
+ "foo/bar/" "bar/"
+ "foo/bar//" "bar//"
+ "/" ""
+ "//" ""
+ "" ""
+ The return value is a tail of the given FILENAME; do NOT free() it! */
+
+/* This function was traditionally called 'basename', but we avoid this
+ function name because
+ * Various platforms have different functions in their libc.
+ In particular, the glibc basename(), defined in <string.h>, does
+ not consider trailing slashes to be part of the component:
+ FILENAME RESULT
+ "foo/bar/" ""
+ "foo/bar//" ""
+ * The 'basename' command eliminates trailing slashes and for a root
+ produces a non-empty result:
+ FILENAME RESULT
+ "foo/bar/" "bar"
+ "foo/bar//" "bar"
+ "/" "/"
+ "//" "/"
+ */
+extern char *last_component (char const *filename) _GL_ATTRIBUTE_PURE;
+
+/* Return the length of the basename FILENAME.
+ Typically FILENAME is the value returned by base_name or last_component.
+ Act like strlen (FILENAME), except omit all trailing slashes. */
+extern size_t base_len (char const *filename) _GL_ATTRIBUTE_PURE;
+
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /* _BASENAME_LGPL_H */