minix/lib/libc/gen/stringlist.3
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00

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.\" $NetBSD: stringlist.3,v 1.15 2010/05/06 09:46:49 jruoho Exp $
.\"
.\" Copyright (c) 1997, 1999 The NetBSD Foundation, Inc.
.\" All rights reserved.
.\"
.\" This file was contributed to The NetBSD Foundation by Luke Mewburn.
.\"
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
.\"
.Dd May 6, 2010
.Dt STRINGLIST 3
.Os
.Sh NAME
.Nm stringlist ,
.Nm sl_init ,
.Nm sl_add ,
.Nm sl_free ,
.Nm sl_find ,
.Nm sl_delete
.Nd stringlist manipulation functions
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In stringlist.h
.Ft StringList *
.Fn sl_init
.Ft int
.Fn sl_add "StringList *sl" "char *item"
.Ft void
.Fn sl_free "StringList *sl" "int freeall"
.Ft char *
.Fn sl_find "StringList *sl" "const char *item"
.Ft int
.Fn sl_delete "StringList *sl" "const char *item" "int freeit"
.Sh DESCRIPTION
The
.Nm
functions manipulate stringlists, which are lists of
strings that extend automatically if necessary.
.Pp
The
.Ar StringList
structure has the following definition:
.Bd -literal -offset indent
typedef struct _stringlist {
char **sl_str;
size_t sl_max;
size_t sl_cur;
} StringList;
.Ed
.Pp
where:
.Bl -tag -width "sl_str" -offset indent
.It Ar sl_str
is a pointer to the base of the array containing the list,
.It Ar sl_max
is the size of
.Ar sl_str ,
and
.It Ar sl_cur
is the offset in
.Ar sl_str
of the current element.
.El
.Pp
The following stringlist manipulation functions are available:
.Bl -tag -width "sl_delete()" -offset 2n
.It Fn sl_init
Create a stringlist.
Returns a pointer to a
.Ar StringList ,
or
.Dv NULL
in case of failure.
.It Fn sl_free
Releases memory occupied by
.Ar sl
and the
.Ar sl-\*[Gt]sl_str
array.
If
.Ar freeall
is non-zero, then each of the items within
.Ar sl-\*[Gt]sl_str
is released as well.
.It Fn sl_add
Add
.Ar item
to
.Ar sl-\*[Gt]sl_str
at
.Ar sl-\*[Gt]sl_cur ,
extending the size of
.Ar sl-\*[Gt]sl_str .
Returns zero upon success, \-1 upon failure.
.It Fn sl_find
Find
.Ar item
in
.Ar sl ,
returning
.Dv NULL
if it's not found.
.It Fn sl_delete
Remove
.Ar item
from the list.
If
.Ar freeit
is non-zero, the string is freed.
Returns
.Dv 0
if the name is found
and
.Dv \-1
if the name is not found.
.El
.Sh SEE ALSO
.Xr free 3 ,
.Xr malloc 3
.Sh HISTORY
The
.Nm
functions appeared in
.Nx 1.3 .