+
+/*
+ * Merging works as follows:
+ * - fields present only in source are copied over to dest
+ * - multi-fields (email, groups) are checked for dupes ad merged
+ * */
+void
+item_merge(list_item dest, list_item src)
+{
+ int i, found = 0;
+ abook_list *dfield, *sfield, *ed, *es;
+
+ for(i = 0; i < fields_count; i++)
+ if (src[i]) {
+ if (!dest[i])
+ dest[i] = xstrdup(src[i]);
+ else if((i == field_id(EMAIL)) || (i == field_id(GROUPS))) {
+ dfield = csv_to_abook_list(dest[i]);
+ sfield = csv_to_abook_list(src[i]);
+ for(es = sfield; es; es = es->next) {
+ for(found=0, ed = dfield; (!found) && ed; ed = ed->next)
+ found = (0 == strcmp(es->data,ed->data));
+ if (!found)
+ abook_list_append(&dfield, es->data);
+ }
+ xfree(dest[i]);
+ dest[i] = abook_list_to_csv(dfield);
+ abook_list_free(&dfield);
+ abook_list_free(&sfield);
+ }
+ }
+
+ item_empty(src);
+}