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 * 4. The name of the author may not be used to endorse or promote products
14 *    derived from this software without specific prior written permission.
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#if defined(LIBC_SCCS) && !defined(lint)
30static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $";
31#endif /* LIBC_SCCS and not lint */
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD$");
34
35#include "namespace.h"
36#include <stdio.h>
37#include <string.h>
38#include <err.h>
39#include <stdlib.h>
40#include <stringlist.h>
41#include "un-namespace.h"
42
43#define _SL_CHUNKSIZE	20
44
45/*
46 * sl_init(): Initialize a string list
47 */
48StringList *
49sl_init(void)
50{
51	StringList *sl;
52
53	sl = malloc(sizeof(StringList));
54	if (sl == NULL)
55		_err(1, "stringlist: %m");
56
57	sl->sl_cur = 0;
58	sl->sl_max = _SL_CHUNKSIZE;
59	sl->sl_str = malloc(sl->sl_max * sizeof(char *));
60	if (sl->sl_str == NULL)
61		_err(1, "stringlist: %m");
62	return sl;
63}
64
65
66/*
67 * sl_add(): Add an item to the string list
68 */
69int
70sl_add(StringList *sl, char *name)
71{
72	if (sl->sl_cur == sl->sl_max - 1) {
73		sl->sl_max += _SL_CHUNKSIZE;
74		sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *));
75		if (sl->sl_str == NULL)
76			return (-1);
77	}
78	sl->sl_str[sl->sl_cur++] = name;
79	return (0);
80}
81
82
83/*
84 * sl_free(): Free a stringlist
85 */
86void
87sl_free(StringList *sl, int all)
88{
89	size_t i;
90
91	if (sl == NULL)
92		return;
93	if (sl->sl_str) {
94		if (all)
95			for (i = 0; i < sl->sl_cur; i++)
96				free(sl->sl_str[i]);
97		free(sl->sl_str);
98	}
99	free(sl);
100}
101
102
103/*
104 * sl_find(): Find a name in the string list
105 */
106char *
107sl_find(StringList *sl, const char *name)
108{
109	size_t i;
110
111	for (i = 0; i < sl->sl_cur; i++)
112		if (strcmp(sl->sl_str[i], name) == 0)
113			return sl->sl_str[i];
114
115	return NULL;
116}
117