1 files changed, 78 insertions, 0 deletions
diff --git a/lib/dpkg/pkg-list.c b/lib/dpkg/pkg-list.c
new file mode 100644
index 0000000..fa889b1
--- /dev/null
+++ b/lib/dpkg/pkg-list.c
@@ -0,0 +1,78 @@
+/*
+ * libdpkg - Debian packaging suite library routines
+ * pkg-list.c - primitives for pkg linked list handling
+ *
+ * Copyright © 2009 Guillem Jover <guillem@debian.org>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <config.h>
+#include <compat.h>
+
+#include <stdlib.h>
+
+#include <dpkg/dpkg.h>
+#include <dpkg/dpkg-db.h>
+#include <dpkg/pkg-list.h>
+
+/**
+ * Create a new package list node.
+ *
+ * @param pkg The pkginfo to assign to the node.
+ * @param next The next package list node.
+ *
+ * @return The new package list node.
+ */
+struct pkg_list *
+pkg_list_new(struct pkginfo *pkg, struct pkg_list *next)
+{
+	struct pkg_list *node;
+
+	node = m_malloc(sizeof(*node));
+	node->pkg = pkg;
+	node->next = next;
+
+	return node;
+}
+
+/**
+ * Free all nodes of a package list.
+ *
+ * @param head The head of the list to free.
+ */
+void
+pkg_list_free(struct pkg_list *head)
+{
+	while (head) {
+		struct pkg_list *node;
+
+		node = head;
+		head = head->next;
+
+		free(node);
+	}
+}
+
+/**
+ * Prepend a package list node to a package list.
+ *
+ * @param head The head of the list to prepend to.
+ * @param pkg The pkginfo to prepend to the list.
+ */
+void
+pkg_list_prepend(struct pkg_list **head, struct pkginfo *pkg)
+{
+	*head = pkg_list_new(pkg, *head);
+}