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 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by Christos Zoulas.
16 * 4. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
20 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <stdio.h>
33#include <string.h>
34#include <err.h>
35#include <stdlib.h>
36#include <stringlist.h>
37
38#define _SL_CHUNKSIZE	20
39
40/*
41 * sl_init(): Initialize a string list
42 */
43StringList *
44sl_init()
45{
46	StringList *sl;
47
48	sl = malloc(sizeof(StringList));
49	if (sl == NULL)
50		err(1, "stringlist: %m");
51
52	sl->sl_cur = 0;
53	sl->sl_max = _SL_CHUNKSIZE;
54	sl->sl_str = malloc(sl->sl_max * sizeof(char *));
55	if (sl->sl_str == NULL)
56		err(1, "stringlist: %m");
57	return sl;
58}
59
60
61/*
62 * sl_add(): Add an item to the string list
63 */
64int
65sl_add(sl, name)
66	StringList *sl;
67	char *name;
68{
69	if (sl->sl_cur == sl->sl_max - 1) {
70		char **string;
71
72		sl->sl_max += _SL_CHUNKSIZE;
73
74		string = realloc(sl->sl_str, sl->sl_max * sizeof(char *));
75		if (string == NULL)
76			return (-1);
77
78		sl->sl_str = string;
79	}
80	sl->sl_str[sl->sl_cur++] = name;
81	return (0);
82}
83
84
85/*
86 * sl_free(): Free a stringlist
87 */
88void
89sl_free(sl, all)
90	StringList *sl;
91	int all;
92{
93	size_t i;
94
95	if (sl == NULL)
96		return;
97	if (sl->sl_str) {
98		if (all)
99			for (i = 0; i < sl->sl_cur; i++)
100				free(sl->sl_str[i]);
101		free(sl->sl_str);
102	}
103	free(sl);
104}
105
106
107/*
108 * sl_find(): Find a name in the string list
109 */
110char *
111sl_find(sl, name)
112	StringList *sl;
113	char *name;
114{
115	size_t i;
116
117	for (i = 0; i < sl->sl_cur; i++)
118		if (strcmp(sl->sl_str[i], name) == 0)
119			return sl->sl_str[i];
120
121	return NULL;
122}
123