1 /* $OpenBSD: stringlist.c,v 1.7 2006/04/25 05:45:20 tedu Exp $ */
2 /* $NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $ */
3
4 /*
5 * Copyright (c) 1994 Christos Zoulas
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by Christos Zoulas.
19 * 4. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
23 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
26 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 #include <stdio.h>
36 #include <string.h>
37 #include <err.h>
38 #include <stdlib.h>
39
40 #include "stringlist.h"
41
42 __RCSID("$MirOS: src/usr.bin/ftp/stringlist.c,v 1.4 2006/10/03 19:22:18 tg Exp $");
43
44 #define _SL_CHUNKSIZE 20
45
46 /*
47 * sl_init(): Initialize a string list
48 */
49 StringList *
sl_init(void)50 sl_init(void)
51 {
52 StringList *sl = malloc(sizeof(StringList));
53 if (sl == NULL)
54 err(1, "stringlist");
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");
61 return sl;
62 }
63
64
65 /*
66 * sl_add(): Add an item to the string list
67 */
68 void
sl_add(StringList * sl,char * name)69 sl_add(StringList *sl, char *name)
70 {
71 if (sl->sl_cur == sl->sl_max - 1) {
72 sl->sl_max += _SL_CHUNKSIZE;
73 sl->sl_str = realloc(sl->sl_str, sl->sl_max * sizeof(char *));
74 if (sl->sl_str == NULL)
75 err(1, "stringlist");
76 }
77 sl->sl_str[sl->sl_cur++] = name;
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