stringlist.c revision 86250 
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 0
35#if defined(LIBC_SCCS) && !defined(lint)
36static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $";
37#endif /* LIBC_SCCS and not lint */
38#endif
39
40#include <sys/cdefs.h>
41__FBSDID("$FreeBSD: head/lib/libc/gen/stringlist.c 86250 2001-11-11 02:48:09Z bde $");
42
43#include <stdio.h>
44#include <string.h>
45#include <err.h>
46#include <stdlib.h>
47#include <stringlist.h>
48
49#define _SL_CHUNKSIZE	20
50
51/*
52 * sl_init(): Initialize a string list
53 */
54StringList *
55sl_init()
56{
57	StringList *sl = malloc(sizeof(StringList));
58	if (sl == NULL)
59		_err(1, "stringlist: %m");
60
61	sl->sl_cur = 0;
62	sl->sl_max = _SL_CHUNKSIZE;
63	sl->sl_str = malloc(sl->sl_max * sizeof(char *));
64	if (sl->sl_str == NULL)
65		_err(1, "stringlist: %m");
66	return sl;
67}
68
69
70/*
71 * sl_add(): Add an item to the string list
72 */
73void
74sl_add(sl, name)
75	StringList *sl;
76	char *name;
77{
78	if (sl->sl_cur == sl->sl_max - 1) {
79		sl->sl_max += _SL_CHUNKSIZE;
80		sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *));
81		if (sl->sl_str == NULL)
82			_err(1, "stringlist: %m");
83	}
84	sl->sl_str[sl->sl_cur++] = name;
85}
86
87
88/*
89 * sl_free(): Free a stringlist
90 */
91void
92sl_free(sl, all)
93	StringList *sl;
94	int all;
95{
96	size_t i;
97
98	if (sl == NULL)
99		return;
100	if (sl->sl_str) {
101		if (all)
102			for (i = 0; i < sl->sl_cur; i++)
103				free(sl->sl_str[i]);
104		free(sl->sl_str);
105	}
106	free(sl);
107}
108
109
110/*
111 * sl_find(): Find a name in the string list
112 */
113char *
114sl_find(sl, name)
115	StringList *sl;
116	char *name;
117{
118	size_t i;
119
120	for (i = 0; i < sl->sl_cur; i++)
121		if (strcmp(sl->sl_str[i], name) == 0)
122			return sl->sl_str[i];
123
124	return NULL;
125}
126