stringlist.c revision 27039 
1/*	$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $	*/
2
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 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by Christos Zoulas.
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
22 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#if defined(LIBC_SCCS) && !defined(lint)
35static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $";
36#endif /* LIBC_SCCS and not lint */
37
38#include <stdio.h>
39#include <string.h>
40#include <err.h>
41#include <stdlib.h>
42#include <stringlist.h>
43
44#define _SL_CHUNKSIZE	20
45
46/*
47 * sl_init(): Initialize a string list
48 */
49StringList *
50sl_init()
51{
52	StringList *sl = malloc(sizeof(StringList));
53	if (sl == NULL)
54		err(1, "stringlist: %m");
55
56	sl->sl_cur = 0;
57	sl->sl_max = _SL_CHUNKSIZE;
58	sl->sl_str = malloc(sl->sl_max * sizeof(char *));
59	if (sl->sl_str == NULL)
60		err(1, "stringlist: %m");
61	return sl;
62}
63
64
65/*
66 * sl_add(): Add an item to the string list
67 */
68void
69sl_add(sl, name)
70	StringList *sl;
71	char *name;
72{
73	if (sl->sl_cur == sl->sl_max - 1) {
74		sl->sl_max += _SL_CHUNKSIZE;
75		sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *));
76		if (sl->sl_str == NULL)
77			err(1, "stringlist: %m");
78	}
79	sl->sl_str[sl->sl_cur++] = name;
80}
81
82
83/*
84 * sl_free(): Free a stringlist
85 */
86void
87sl_free(sl, all)
88	StringList *sl;
89	int all;
90{
91	size_t i;
92
93	if (sl == NULL)
94		return;
95	if (sl->sl_str) {
96		if (all)
97			for (i = 0; i < sl->sl_cur; i++)
98				free(sl->sl_str[i]);
99		free(sl->sl_str);
100	}
101	free(sl);
102}
103
104
105/*
106 * sl_find(): Find a name in the string list
107 */
108char *
109sl_find(sl, name)
110	StringList *sl;
111	char *name;
112{
113	size_t i;
114
115	for (i = 0; i < sl->sl_cur; i++)
116		if (strcmp(sl->sl_str[i], name) == 0)
117			return sl->sl_str[i];
118
119	return NULL;
120}
121