1 files changed, 28 insertions, 6 deletions
diff --git a/src/datagen.c b/src/datagen.c
index 9efe3b3..d4c8bab 100644
--- a/src/datagen.c
+++ b/src/datagen.c
@@ -1,19 +1,20 @@
+/* SPDX-License-Identifier: LGPL-2.1-only */
+
+/* Copyright (C) 2020 Gediminas Jakutis */
+
 #include <unistd.h>
 #include <stddef.h>
 #include <errno.h>
+#include <stdlib.h>
+#include <sys/types.h>
 #include "datagen.h"
 #include "defs.h"
 
-int gen_get(struct stream *in, size_t idx, struct entry_l *data, int tag)
+int gen_get_array(struct stream * const restrict in, ssize_t idx, struct entry_l * const data)
 {
 	int ret = 0;
 	(void) idx;
 
-	if (tag) {
-		data->prev = 0;
-		data->next = 0;
-	}
-
 	in->prev_idx = -1;
 	ret = read(in->fd, &data->val, sizeof(data->val));
 
@@ -23,3 +24,24 @@ int gen_get(struct stream *in, size_t idx, struct entry_l *data, int tag)
 
 	return ret;
 }
+
+int gen_get_list(struct stream * const restrict in, ssize_t idx, struct entry_l * const data)
+{
+	int ret = 0;
+
+	data->prev = idx > 0 ? idx - 1 : labs(idx) - 1;
+	data->next = idx + 1;
+
+	if (!idx) {
+		data->val = 0; /* header lmao */
+	} else {
+		ret = gen_get_array(in, idx, data);
+	}
+
+	return ret;
+}
+
+int gen_put(struct stream * const restrict in, ssize_t idx, const struct entry_l * const data)
+{
+	return ENOSYS;
+}