1/*
2 * Copyright (c) 1994 Christos Zoulas
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
15 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#if defined(LIBC_SCCS) && !defined(lint)
28static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $";
29#endif /* LIBC_SCCS and not lint */
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD$");
32
33#include "namespace.h"
34#include <stdio.h>
35#include <string.h>
36#include <err.h>
37#include <stdlib.h>
38#include <stringlist.h>
39#include "un-namespace.h"
40
41#define _SL_CHUNKSIZE	20
42
43/*
44 * sl_init(): Initialize a string list
45 */
46StringList *
47sl_init(void)
48{
49	StringList *sl;
50
51	sl = malloc(sizeof(StringList));
52	if (sl == NULL)
53		_err(1, "stringlist: %m");
54
55	sl->sl_cur = 0;
56	sl->sl_max = _SL_CHUNKSIZE;
57	sl->sl_str = malloc(sl->sl_max * sizeof(char *));
58	if (sl->sl_str == NULL)
59		_err(1, "stringlist: %m");
60	return sl;
61}
62
63
64/*
65 * sl_add(): Add an item to the string list
66 */
67int
68sl_add(StringList *sl, char *name)
69{
70	if (sl->sl_cur == sl->sl_max - 1) {
71		sl->sl_max += _SL_CHUNKSIZE;
72		sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *));
73		if (sl->sl_str == NULL)
74			return (-1);
75	}
76	sl->sl_str[sl->sl_cur++] = name;
77	return (0);
78}
79
80
81/*
82 * sl_free(): Free a stringlist
83 */
84void
85sl_free(StringList *sl, int all)
86{
87	size_t i;
88
89	if (sl == NULL)
90		return;
91	if (sl->sl_str) {
92		if (all)
93			for (i = 0; i < sl->sl_cur; i++)
94				free(sl->sl_str[i]);
95		free(sl->sl_str);
96	}
97	free(sl);
98}
99
100
101/*
102 * sl_find(): Find a name in the string list
103 */
104char *
105sl_find(StringList *sl, const char *name)
106{
107	size_t i;
108
109	for (i = 0; i < sl->sl_cur; i++)
110		if (strcmp(sl->sl_str[i], name) == 0)
111			return sl->sl_str[i];
112
113	return NULL;
114}
115