\" $NetBSD: basename.3,v 1.14 2008/05/10 22:39:40 christos Exp $
\"
\" Copyright (c) 1997, 2002 The NetBSD Foundation, Inc.
\" All rights reserved.
\"
\" This code is derived from software contributed to The NetBSD Foundation
\" by Klaus Klein and Jason R. Thorpe.
\"
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\" are met:
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\" notice, this list of conditions and the following disclaimer.
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Dd May 10, 2008
Dt BASENAME 3
Os
Sh NAME
Nm basename
Nd return the last component of a pathname
Sh LIBRARY
Lb libc
Sh SYNOPSIS
In libgen.h
Ft char *
Fn basename "char *path"
Sh DESCRIPTION
The
Fn basename
function takes the pathname pointed to by
Ar path
and returns a pointer to the final component of the pathname,
deleting any trailing
Sq /
characters.
Pp
If
Ar path
consists entirely of
Sq /
characters,
Fn basename
returns a pointer to the string
Dq / .
Pp
If
Ar path
is a null pointer or points to an empty string,
Fn basename
returns a pointer to the string
Dq \&. .
Sh RETURN VALUES
The
Fn basename
function returns a pointer to the final component of
Ar path .
Sh SEE ALSO
Xr basename 1 ,
Xr dirname 3
Sh STANDARDS
Bl -bullet -compact
It
St -xpg4.2
It
St -p1003.1-2001
El
Sh BUGS
If the length of the result is longer than
Dv PATH_MAX
bytes
Pq including the terminating nul ,
the result will be truncated.
Pp
The
Fn basename
function returns a pointer to static storage that may be overwritten
by subsequent calls to
Fn basename .
This is not strictly a bug; it is explicitly allowed by
St -p1003.1-2001 .
