c9ae54eebb
almost identical. * Merge strchr(3) and strrchr(3) to strchr(3) since the two functions are almost identical. * Make the wording of index(3) and strchr(3) more similar. * mdoc(7) cleanup. Submitted by: SUZUKI Koichi <metal@gc5.so-net.ne.jp>, keramida, myself PR: docs/32054 Reviewed by: ru Approved by: ceri (mentor)
99 lines
3.0 KiB
Groff
99 lines
3.0 KiB
Groff
.\" 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 and the American National Standards Committee X3,
|
|
.\" on Information Processing Systems.
|
|
.\"
|
|
.\" 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. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 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.
|
|
.\"
|
|
.\" @(#)strchr.3 8.2 (Berkeley) 4/19/94
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd April 19, 1994
|
|
.Dt STRCHR 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm strchr , strrchr
|
|
.Nd locate character in string
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In string.h
|
|
.Ft "char *"
|
|
.Fn strchr "const char *s" "int c"
|
|
.Ft "char *"
|
|
.Fn strrchr "const char *s" "int c"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn strchr
|
|
function locates the first occurrence of
|
|
.Fa c
|
|
(converted to a
|
|
.Vt char )
|
|
in the string pointed to by
|
|
.Fa s .
|
|
The terminating null character is considered part of the string.
|
|
.Pp
|
|
The
|
|
.Fn strrchr
|
|
function is identical to
|
|
.Fn strchr
|
|
except it locates the last occurrence of
|
|
.Fa c .
|
|
.Sh RETURN VALUES
|
|
The functions
|
|
.Fn strchr
|
|
and
|
|
.Fn strrchr
|
|
return a pointer to the located character, or
|
|
.Dv NULL
|
|
if the character does not appear in the string.
|
|
If
|
|
.Fa c
|
|
is
|
|
.Ql \e0 ,
|
|
the functions locate the terminating
|
|
.Ql \e0 .
|
|
.Sh SEE ALSO
|
|
.Xr memchr 3 ,
|
|
.Xr strcspn 3 ,
|
|
.Xr strpbrk 3 ,
|
|
.Xr strsep 3 ,
|
|
.Xr strspn 3 ,
|
|
.Xr strstr 3 ,
|
|
.Xr strtok 3
|
|
.Sh STANDARDS
|
|
The functions
|
|
.Fn strchr
|
|
and
|
|
.Fn strrchr
|
|
conform to
|
|
.St -isoC .
|