1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 1994 Christos Zoulas
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
17 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__RCSID("$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $");
31#include "namespace.h"
32#include <stdio.h>
33#include <string.h>
34#include <err.h>
35#include <stdlib.h>
36#include <stringlist.h>
37#include "un-namespace.h"
38
39#define _SL_CHUNKSIZE	20
40
41/*
42 * sl_init(): Initialize a string list
43 */
44StringList *
45sl_init(void)
46{
47	StringList *sl;
48
49	sl = malloc(sizeof(StringList));
50	if (sl == NULL)
51		_err(1, "stringlist: %m");
52
53	sl->sl_cur = 0;
54	sl->sl_max = _SL_CHUNKSIZE;
55	sl->sl_str = malloc(sl->sl_max * sizeof(char *));
56	if (sl->sl_str == NULL)
57		_err(1, "stringlist: %m");
58	return sl;
59}
60
61
62/*
63 * sl_add(): Add an item to the string list
64 */
65int
66sl_add(StringList *sl, char *name)
67{
68	if (sl->sl_cur == sl->sl_max - 1) {
69		sl->sl_max += _SL_CHUNKSIZE;
70		sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *));
71		if (sl->sl_str == NULL)
72			return (-1);
73	}
74	sl->sl_str[sl->sl_cur++] = name;
75	return (0);
76}
77
78
79/*
80 * sl_free(): Free a stringlist
81 */
82void
83sl_free(StringList *sl, int all)
84{
85	size_t i;
86
87	if (sl == NULL)
88		return;
89	if (sl->sl_str) {
90		if (all)
91			for (i = 0; i < sl->sl_cur; i++)
92				free(sl->sl_str[i]);
93		free(sl->sl_str);
94	}
95	free(sl);
96}
97
98
99/*
100 * sl_find(): Find a name in the string list
101 */
102char *
103sl_find(StringList *sl, const char *name)
104{
105	size_t i;
106
107	for (i = 0; i < sl->sl_cur; i++)
108		if (strcmp(sl->sl_str[i], name) == 0)
109			return sl->sl_str[i];
110
111	return NULL;
112}
113