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-.\" $OpenBSD: strsep.3,v 1.14 2013/06/05 03:39:23 tedu Exp $
-.\"
-.\" Copyright (c) 1990, 1991, 1993
-.\"     The Regents of the University of California.  All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" Chris Torek.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 3. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"     @(#)strsep.3    8.1 (Berkeley) 6/9/93
-.\"
-.Dd $Mdocdate: June 5 2013 $
-.Dt STRSEP 3
-.Os
-.Sh NAME
-.Nm strsep
-.Nd separate strings
-.Sh SYNOPSIS
-.In string.h
-.Ft char *
-.Fn strsep "char **stringp" "const char *delim"
-.Sh DESCRIPTION
-The
-.Fn strsep
-function locates, in the string referenced by
-.Fa *stringp ,
-the first occurrence of any character in the string
-.Fa delim
-(or the terminating
-.Ql \e0
-character) and replaces it with a
-.Ql \e0 .
-The location of the next character after the delimiter character
-(or
-.Dv NULL ,
-if the end of the string was reached) is stored in
-.Fa *stringp .
-The original value of
-.Fa *stringp
-is returned.
-.Pp
-An
-.Dq empty
-field, i.e., one caused by two adjacent delimiter characters,
-can be detected by comparing the location referenced by the pointer returned
-by
-.Fn strsep
-to
-.Ql \e0 .
-.Pp
-If
-.Fa *stringp
-is initially
-.Dv NULL ,
-.Fn strsep
-returns
-.Dv NULL .
-.Sh EXAMPLES
-The following uses
-.Fn strsep
-to parse a string, containing tokens delimited by whitespace, into an
-argument vector:
-.Bd -literal -offset indent
-char **ap, *argv[10], *inputstring;
-
-for (ap = argv; ap < &argv[9] &&
-    (*ap = strsep(&inputstring, " \et")) != NULL;) {
-        if (**ap != '\e0')
-                ap++;
-}
-*ap = NULL;
-.Ed
-.Sh HISTORY
-The
-.Fn strsep
-function first appeared in
-.Bx 4.3 Reno .
-It is intended as a replacement for the
-.Xr strtok 3
-function.
-While the
-.Xr strtok 3
-function should be preferred for portability reasons (it conforms to
-.St -ansiC )
-it is unable to handle empty fields, i.e., detect fields delimited by
-two adjacent delimiter characters, or to be used for more than a single
-string at a time.