105 lines
3.3 KiB
Groff
105 lines
3.3 KiB
Groff
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.\" Copyright 2007 Roy Marples
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.\" All rights reserved
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.Dd Dec 24, 2007
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.Dt RC_STRLIST 3 SMM
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.Os OpenRC
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.Sh NAME
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.Nm rc_strlist_add , rc_strlist_addu , rc_strlist_addsort ,
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.Nm rc_strlist_addsortc , rc_strlist_addsortu , rc_strlist_delete ,
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.Nm rc_strlist_join , rc_strlist_reverse , rc_strlist_free
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.Nd RC string list functions
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.Sh LIBRARY
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Run Command library (librc, -lrc)
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.Sh SYNOPSIS
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.In rc.h
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.Ft "char *" Fn rc_strlist_add "char ***list" "const char *item"
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.Ft "char *" Fn rc_strlist_addu "char ***list" "const char *item"
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.Ft "char *" Fn rc_strlist_addsort "char ***list" "const char *item"
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.Ft "char *" Fn rc_strlist_addsortc "char ***list" "const char *item"
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.Ft "char *" Fn rc_strlist_addsortu "char ***list" "const char *item"
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.Ft bool Fn rc_strlist_delete "char ***list" "const char *item"
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.Ft "char *" Fn rc_strlist_join "char ***list1" "const char **list2"
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.Ft void Fn rc_strlist_reverse "char **list"
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.Ft void Fn rc_strlist_free "char **list"
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.Sh DESCRIPTION
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These functions provide an easy means of manipulating string lists without
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the need for custom structures or non standard macros.
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.Pp
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.Fn rc_strlist_add
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adds a malloced copy of
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.Fa item
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to
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.Fa list ,
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realloced to accomodate the new item. It returns a pointer to the new item on
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success, or NULL on failure and sets
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.Va errno
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accordingly.
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.Fn rc_strlist_addu
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and
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.Fn rc_strlist_addsortu
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only work if
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.Fa list
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does not already contain
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.Fa item .
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.Fn rc_strlist_addsort
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adds the item to the list in a lexically sorted position, using
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.Nm strcoll ,
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whereas
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.Fn rc_strlist_addsortc
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uses
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.Nm strcmp .
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.Pp
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.Fn rc_strlist_delete
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removes and frees
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.Fa item
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from
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.Fa list ,
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retuning true on success, otherwise false.
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.Pp
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.Fn rc_strlist_join
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appends
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.Fa list2
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to the end of
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.Fa list1
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and returns a pointer to the last item on the new list.
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.Pp
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.Fn rc_strlist_reverse
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reverses the items on
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.Fa list .
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.Pp
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.Fn rc_strlist_free
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frees each item on
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.Fa list
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and the
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.Fa list
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itself.
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.Sh SEE ALSO
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.Xr malloc 3 ,
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.Xr free 3 ,
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.Xr strcmp 3 ,
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.Xr strcoll 3
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.Sh AUTHORS
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.An "Roy Marples" Aq roy@marples.name
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