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1479465f GJ |
1 | /* |
2 | * libdpkg - Debian packaging suite library routines | |
3 | * pkg-list.c - primitives for pkg linked list handling | |
4 | * | |
5 | * Copyright © 2009 Guillem Jover <guillem@debian.org> | |
6 | * | |
7 | * This is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <https://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include <compat.h> | |
23 | ||
24 | #include <stdlib.h> | |
25 | ||
26 | #include <dpkg/dpkg.h> | |
27 | #include <dpkg/dpkg-db.h> | |
28 | #include <dpkg/pkg-list.h> | |
29 | ||
30 | /** | |
31 | * Create a new package list node. | |
32 | * | |
33 | * @param pkg The pkginfo to assign to the node. | |
34 | * @param next The next package list node. | |
35 | * | |
36 | * @return The new package list node. | |
37 | */ | |
38 | struct pkg_list * | |
39 | pkg_list_new(struct pkginfo *pkg, struct pkg_list *next) | |
40 | { | |
41 | struct pkg_list *node; | |
42 | ||
43 | node = m_malloc(sizeof(*node)); | |
44 | node->pkg = pkg; | |
45 | node->next = next; | |
46 | ||
47 | return node; | |
48 | } | |
49 | ||
50 | /** | |
51 | * Free all nodes of a package list. | |
52 | * | |
53 | * @param head The head of the list to free. | |
54 | */ | |
55 | void | |
56 | pkg_list_free(struct pkg_list *head) | |
57 | { | |
58 | while (head) { | |
59 | struct pkg_list *node; | |
60 | ||
61 | node = head; | |
62 | head = head->next; | |
63 | ||
64 | free(node); | |
65 | } | |
66 | } | |
67 | ||
68 | /** | |
69 | * Prepend a package list node to a package list. | |
70 | * | |
71 | * @param head The head of the list to prepend to. | |
72 | * @param pkg The pkginfo to prepend to the list. | |
73 | */ | |
74 | void | |
75 | pkg_list_prepend(struct pkg_list **head, struct pkginfo *pkg) | |
76 | { | |
77 | *head = pkg_list_new(pkg, *head); | |
78 | } |