BASENAME(3) | Library Functions Manual | BASENAME(3) |
basename
— extract
the base portion of a pathname
#include
<libgen.h>
char *
basename
(char
*path);
char *
basename_r
(const
char *path, char
*bname);
The
basename
()
function returns the last component from the pathname pointed to by
path, deleting any trailing ‘/’
characters.
The
basename_r
()
variation accepts a buffer of at least MAXPATHLEN
bytes in which to store the resulting component.
This implementation of basename
() returns
a pointer to internal storage space allocated on the first call that will be
overwritten by subsequent calls. basename_r
() is
therefore preferred for threaded applications. Other vendor implementations
of basename
() may modify the contents of the string
passed to basename
(); this should be taken into
account when writing code which calls this function if portability is
desired.
If path consists entirely of ‘/’ characters, a pointer to the string "/" is returned. If path is a null pointer or the empty string, a pointer to the string "." is returned. Otherwise, they return a pointer to the last component of path.
If they fail, a null pointer is returned and the global variable errno is set to indicate the error.
The following error codes may be set in errno:
ENAMETOOLONG
]MAXPATHLEN
.The basename
() function conforms to
X/Open Portability Guide Issue 4, Version 2
(“XPG4.2”).
The basename
() function first appeared in
OpenBSD 2.2 and FreeBSD
4.2.
The basename_r
() function first appeared
in OS X 10.12.
Nuxi, the Netherlands
May 22, 2017 | Mac OS X 14 |