Add pmdelta_t structure and functions to libalpm.

Signed-off-by: Nathan Jones <nathanj@insightbb.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/lib/libalpm/alpm_list.c b/lib/libalpm/alpm_list.c
index 5671b4a2..2301411a 100644
--- a/lib/libalpm/alpm_list.c
+++ b/lib/libalpm/alpm_list.c
@@ -379,6 +379,24 @@ alpm_list_t SYMEXPORT *alpm_list_strdup(const alpm_list_t *list)
 }
 
 /**
+ * @brief Copy a list, without copying data.
+ *
+ * @param list the list to copy
+ *
+ * @return a copy of the original list
+ */
+alpm_list_t SYMEXPORT *alpm_list_copy(const alpm_list_t *list)
+{
+	const alpm_list_t *lp = list;
+	alpm_list_t *newlist = NULL;
+	while(lp) {
+		newlist = alpm_list_add(newlist, lp->data);
+		lp = lp->next;
+	}
+	return(newlist);
+}
+
+/**
  * @brief Create a new list in reverse order.
  *
  * @param list the list to copy