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-.\" 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.
-.\" 4. 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
-.\" $FreeBSD$
-.\"
-.Dd December 5, 2008
-.Dt STRSEP 3
-.Os
-.Sh NAME
-.Nm strsep
-.Nd separate strings
-.Sh LIBRARY
-.Lb libc
-.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 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., a character in the string
-.Fa delim
-occurs as the first character of
-.Fa *stringp )
-can be detected by comparing the location referenced by the returned pointer
-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, and prints each token in separate line:
-.Bd -literal -offset indent
-char *token, *string, *tofree;
-
-tofree = string = strdup("abc,def,ghi");
-assert(string != NULL);
-
-while ((token = strsep(&string, ",")) != NULL)
- printf("%s\en", token);
-
-free(tofree);
-.Ed
-.Pp
-The following uses
-.Fn strsep
-to parse a string, containing tokens delimited by white space, into an
-argument vector:
-.Bd -literal -offset indent
-char **ap, *argv[10], *inputstring;
-
-for (ap = argv; (*ap = strsep(&inputstring, " \et")) != NULL;)
- if (**ap != '\e0')
- if (++ap >= &argv[10])
- break;
-.Ed
-.Sh SEE ALSO
-.Xr memchr 3 ,
-.Xr strchr 3 ,
-.Xr strcspn 3 ,
-.Xr strpbrk 3 ,
-.Xr strrchr 3 ,
-.Xr strspn 3 ,
-.Xr strstr 3 ,
-.Xr strtok 3
-.Sh HISTORY
-The
-.Fn strsep
-function
-is intended as a replacement for the
-.Fn strtok
-function.
-While the
-.Fn strtok
-function should be preferred for portability reasons (it conforms to
-.St -isoC )
-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.
-The
-.Fn strsep
-function first appeared in
-.Bx 4.4 .
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