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 * $NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $
29 * $FreeBSD: src/lib/libc/gen/stringlist.c,v 1.8 2007/01/09 00:27:55 imp Exp $
30 * $DragonFly: src/lib/libc/gen/stringlist.c,v 1.3 2005/11/13 00:07:42 swildner Exp $
31 */
32
33 #include "namespace.h"
34 #include <stdio.h>
35 #include <string.h>
36 #include <err.h>
37 #include <stdlib.h>
38 #include <stringlist.h>
39 #include "un-namespace.h"
40
41 #define _SL_CHUNKSIZE 20
42
43 /*
44 * sl_init(): Initialize a string list
45 */
46 StringList *
sl_init(void)47 sl_init(void)
48 {
49 StringList *sl;
50
51 sl = malloc(sizeof(StringList));
52 if (sl == NULL)
53 _err(1, "stringlist: %m");
54
55 sl->sl_cur = 0;
56 sl->sl_max = _SL_CHUNKSIZE;
57 sl->sl_str = malloc(sl->sl_max * sizeof(char *));
58 if (sl->sl_str == NULL)
59 _err(1, "stringlist: %m");
60 return sl;
61 }
62
63
64 /*
65 * sl_add(): Add an item to the string list
66 */
67 int
sl_add(StringList * sl,char * name)68 sl_add(StringList *sl, char *name)
69 {
70 if (sl->sl_cur == sl->sl_max - 1) {
71 sl->sl_max += _SL_CHUNKSIZE;
72 sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *));
73 if (sl->sl_str == NULL)
74 return (-1);
75 }
76 sl->sl_str[sl->sl_cur++] = name;
77 return (0);
78 }
79
80
81 /*
82 * sl_free(): Free a stringlist
83 */
84 void
sl_free(StringList * sl,int all)85 sl_free(StringList *sl, int all)
86 {
87 size_t i;
88
89 if (sl == NULL)
90 return;
91 if (sl->sl_str) {
92 if (all)
93 for (i = 0; i < sl->sl_cur; i++)
94 free(sl->sl_str[i]);
95 free(sl->sl_str);
96 }
97 free(sl);
98 }
99
100
101 /*
102 * sl_find(): Find a name in the string list
103 */
104 char *
sl_find(StringList * sl,const char * name)105 sl_find(StringList *sl, const char *name)
106 {
107 size_t i;
108
109 for (i = 0; i < sl->sl_cur; i++)
110 if (strcmp(sl->sl_str[i], name) == 0)
111 return sl->sl_str[i];
112
113 return NULL;
114 }
115