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/* $Id: compat_stringlist.c,v 1.8 2020/06/15 21:48:09 schwarze Exp $ */
/* $NetBSD: stringlist.c,v 1.14 2015/05/21 01:29:13 christos Exp $ */
/*-
* Copyright (c) 1994, 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include "compat_stringlist.h"
#define _SL_CHUNKSIZE 20
/*
* sl_init(): Initialize a string list
*/
StringList *
sl_init(void)
{
StringList *sl;
sl = malloc(sizeof(StringList));
if (sl == NULL)
return NULL;
sl->sl_cur = 0;
sl->sl_max = _SL_CHUNKSIZE;
sl->sl_str = reallocarray(NULL, sl->sl_max, sizeof(char *));
if (sl->sl_str == NULL) {
free(sl);
sl = NULL;
}
return sl;
}
/*
* sl_add(): Add an item to the string list
*/
int
sl_add(StringList *sl, char *name)
{
if (sl->sl_cur == sl->sl_max - 1) {
char **new;
new = reallocarray(sl->sl_str, (sl->sl_max + _SL_CHUNKSIZE),
sizeof(char *));
if (new == NULL)
return -1;
sl->sl_max += _SL_CHUNKSIZE;
sl->sl_str = new;
}
sl->sl_str[sl->sl_cur++] = name;
return 0;
}
/*
* sl_free(): Free a stringlist
*/
void
sl_free(StringList *sl, int all)
{
size_t i;
if (sl == NULL)
return;
if (sl->sl_str) {
if (all)
for (i = 0; i < sl->sl_cur; i++)
free(sl->sl_str[i]);
free(sl->sl_str);
}
free(sl);
}
/*
* sl_find(): Find a name in the string list
*/
char *
sl_find(StringList *sl, const char *name)
{
size_t i;
for (i = 0; i < sl->sl_cur; i++)
if (strcmp(sl->sl_str[i], name) == 0)
return sl->sl_str[i];
return NULL;
}
int
sl_delete(StringList *sl, const char *name, int all)
{
size_t i, j;
for (i = 0; i < sl->sl_cur; i++)
if (strcmp(sl->sl_str[i], name) == 0) {
if (all)
free(sl->sl_str[i]);
for (j = i + 1; j < sl->sl_cur; j++)
sl->sl_str[j - 1] = sl->sl_str[j];
sl->sl_str[--sl->sl_cur] = NULL;
return 0;
}
return -1;
}
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