b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
145 lines
3.4 KiB
Groff
145 lines
3.4 KiB
Groff
.\" $NetBSD: stringlist.3,v 1.15 2010/05/06 09:46:49 jruoho Exp $
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.\"
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.\" Copyright (c) 1997, 1999 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This file was contributed to The NetBSD Foundation by Luke Mewburn.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd May 6, 2010
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.Dt STRINGLIST 3
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.Os
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.Sh NAME
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.Nm stringlist ,
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.Nm sl_init ,
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.Nm sl_add ,
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.Nm sl_free ,
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.Nm sl_find ,
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.Nm sl_delete
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.Nd stringlist manipulation functions
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In stringlist.h
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.Ft StringList *
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.Fn sl_init
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.Ft int
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.Fn sl_add "StringList *sl" "char *item"
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.Ft void
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.Fn sl_free "StringList *sl" "int freeall"
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.Ft char *
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.Fn sl_find "StringList *sl" "const char *item"
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.Ft int
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.Fn sl_delete "StringList *sl" "const char *item" "int freeit"
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.Sh DESCRIPTION
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The
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.Nm
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functions manipulate stringlists, which are lists of
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strings that extend automatically if necessary.
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.Pp
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The
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.Ar StringList
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structure has the following definition:
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.Bd -literal -offset indent
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typedef struct _stringlist {
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char **sl_str;
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size_t sl_max;
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size_t sl_cur;
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} StringList;
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.Ed
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.Pp
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where:
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.Bl -tag -width "sl_str" -offset indent
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.It Ar sl_str
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is a pointer to the base of the array containing the list,
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.It Ar sl_max
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is the size of
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.Ar sl_str ,
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and
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.It Ar sl_cur
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is the offset in
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.Ar sl_str
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of the current element.
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.El
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.Pp
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The following stringlist manipulation functions are available:
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.Bl -tag -width "sl_delete()" -offset 2n
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.It Fn sl_init
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Create a stringlist.
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Returns a pointer to a
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.Ar StringList ,
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or
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.Dv NULL
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in case of failure.
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.It Fn sl_free
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Releases memory occupied by
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.Ar sl
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and the
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.Ar sl-\*[Gt]sl_str
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array.
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If
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.Ar freeall
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is non-zero, then each of the items within
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.Ar sl-\*[Gt]sl_str
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is released as well.
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.It Fn sl_add
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Add
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.Ar item
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to
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.Ar sl-\*[Gt]sl_str
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at
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.Ar sl-\*[Gt]sl_cur ,
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extending the size of
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.Ar sl-\*[Gt]sl_str .
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Returns zero upon success, \-1 upon failure.
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.It Fn sl_find
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Find
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.Ar item
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in
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.Ar sl ,
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returning
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.Dv NULL
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if it's not found.
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.It Fn sl_delete
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Remove
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.Ar item
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from the list.
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If
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.Ar freeit
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is non-zero, the string is freed.
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Returns
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.Dv 0
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if the name is found
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and
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.Dv \-1
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if the name is not found.
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.El
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.Sh SEE ALSO
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.Xr free 3 ,
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.Xr malloc 3
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.Sh HISTORY
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The
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.Nm
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functions appeared in
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.Nx 1.3 .
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