1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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 *
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 #include <sys/cdefs.h>
30 __RCSID("$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $");
31 #include "namespace.h"
32 #include <stdio.h>
33 #include <string.h>
34 #include <err.h>
35 #include <stdlib.h>
36 #include <stringlist.h>
37 #include "un-namespace.h"
38
39 #define _SL_CHUNKSIZE 20
40
41 /*
42 * sl_init(): Initialize a string list
43 */
44 StringList *
sl_init(void)45 sl_init(void)
46 {
47 StringList *sl;
48
49 sl = malloc(sizeof(StringList));
50 if (sl == NULL)
51 _err(1, "stringlist: %m");
52
53 sl->sl_cur = 0;
54 sl->sl_max = _SL_CHUNKSIZE;
55 sl->sl_str = malloc(sl->sl_max * sizeof(char *));
56 if (sl->sl_str == NULL)
57 _err(1, "stringlist: %m");
58 return sl;
59 }
60
61
62 /*
63 * sl_add(): Add an item to the string list
64 */
65 int
sl_add(StringList * sl,char * name)66 sl_add(StringList *sl, char *name)
67 {
68 if (sl->sl_cur == sl->sl_max - 1) {
69 sl->sl_max += _SL_CHUNKSIZE;
70 sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *));
71 if (sl->sl_str == NULL)
72 return (-1);
73 }
74 sl->sl_str[sl->sl_cur++] = name;
75 return (0);
76 }
77
78
79 /*
80 * sl_free(): Free a stringlist
81 */
82 void
sl_free(StringList * sl,int all)83 sl_free(StringList *sl, int all)
84 {
85 size_t i;
86
87 if (sl == NULL)
88 return;
89 if (sl->sl_str) {
90 if (all)
91 for (i = 0; i < sl->sl_cur; i++)
92 free(sl->sl_str[i]);
93 free(sl->sl_str);
94 }
95 free(sl);
96 }
97
98
99 /*
100 * sl_find(): Find a name in the string list
101 */
102 char *
sl_find(StringList * sl,const char * name)103 sl_find(StringList *sl, const char *name)
104 {
105 size_t i;
106
107 for (i = 0; i < sl->sl_cur; i++)
108 if (strcmp(sl->sl_str[i], name) == 0)
109 return sl->sl_str[i];
110
111 return NULL;
112 }
113