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9385eb3d A |
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. | |
9385eb3d A |
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 | ||
29 | #if defined(LIBC_SCCS) && !defined(lint) | |
30 | static char *rcsid = "$NetBSD: stringlist.c,v 1.2 1997/01/17 07:26:20 lukem Exp $"; | |
31 | #endif /* LIBC_SCCS and not lint */ | |
32 | #include <sys/cdefs.h> | |
1f2f436a | 33 | __FBSDID("$FreeBSD: src/lib/libc/gen/stringlist.c,v 1.8 2007/01/09 00:27:55 imp Exp $"); |
9385eb3d A |
34 | |
35 | #include "namespace.h" | |
36 | #include <stdio.h> | |
37 | #include <string.h> | |
38 | #include <err.h> | |
39 | #include <stdlib.h> | |
40 | #include <stringlist.h> | |
41 | #include "un-namespace.h" | |
42 | ||
43 | #define _SL_CHUNKSIZE 20 | |
44 | ||
45 | /* | |
46 | * sl_init(): Initialize a string list | |
47 | */ | |
48 | StringList * | |
49 | sl_init() | |
50 | { | |
51 | StringList *sl; | |
52 | ||
53 | sl = malloc(sizeof(StringList)); | |
54 | if (sl == NULL) | |
55 | _err(1, "stringlist: %m"); | |
56 | ||
57 | sl->sl_cur = 0; | |
58 | sl->sl_max = _SL_CHUNKSIZE; | |
59 | sl->sl_str = malloc(sl->sl_max * sizeof(char *)); | |
60 | if (sl->sl_str == NULL) | |
61 | _err(1, "stringlist: %m"); | |
62 | return sl; | |
63 | } | |
64 | ||
65 | ||
66 | /* | |
67 | * sl_add(): Add an item to the string list | |
68 | */ | |
69 | int | |
70 | sl_add(sl, name) | |
71 | StringList *sl; | |
72 | char *name; | |
73 | { | |
74 | if (sl->sl_cur == sl->sl_max - 1) { | |
75 | sl->sl_max += _SL_CHUNKSIZE; | |
76 | sl->sl_str = reallocf(sl->sl_str, sl->sl_max * sizeof(char *)); | |
77 | if (sl->sl_str == NULL) | |
78 | return (-1); | |
79 | } | |
80 | sl->sl_str[sl->sl_cur++] = name; | |
81 | return (0); | |
82 | } | |
83 | ||
84 | ||
85 | /* | |
86 | * sl_free(): Free a stringlist | |
87 | */ | |
88 | void | |
89 | sl_free(sl, all) | |
90 | StringList *sl; | |
91 | int all; | |
92 | { | |
93 | size_t i; | |
94 | ||
95 | if (sl == NULL) | |
96 | return; | |
97 | if (sl->sl_str) { | |
98 | if (all) | |
99 | for (i = 0; i < sl->sl_cur; i++) | |
100 | free(sl->sl_str[i]); | |
101 | free(sl->sl_str); | |
102 | } | |
103 | free(sl); | |
104 | } | |
105 | ||
106 | ||
107 | /* | |
108 | * sl_find(): Find a name in the string list | |
109 | */ | |
110 | char * | |
111 | sl_find(sl, name) | |
112 | StringList *sl; | |
113 | char *name; | |
114 | { | |
115 | size_t i; | |
116 | ||
117 | for (i = 0; i < sl->sl_cur; i++) | |
118 | if (strcmp(sl->sl_str[i], name) == 0) | |
119 | return sl->sl_str[i]; | |
120 | ||
121 | return NULL; | |
122 | } |