--- libelwix/example/test_tlv.c	2022/01/24 16:01:49	1.1.2.1
+++ libelwix/example/test_tlv.c	2022/01/24 17:07:24	1.1.2.2
@@ -1,26 +1,73 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
 #include <elwix.h>
 
 
+static void
+display(array_t *arr)
+{
+	register int i;
+
+	for (i = 0; i < array_Size(arr); i++) {
+		if (AIT_TYPE(array(arr, i, ait_val_t*)) == string)
+			printf("arr[%d]=%s (%d)\n", i, AIT_ADDR(array(arr, i, ait_val_t*)), 
+					AIT_LEN(array(arr, i, ait_val_t*)));
+		else
+			printf("arr[%d]#%ld (%d)\n", i, AIT_RAW(array(arr, i, ait_val_t*)), 
+					AIT_LEN(array(arr, i, ait_val_t*)));
+	}
+}
+
 int
 main(int argc, char **argv)
 {
 	array_t *arr;
-	register int i;
+	u_char buf[BUFSIZ];
+	int f, len, ret = 0;
 
 	arr = ait_array2vars((const char**) argv, 42);
 	if (!arr)
 		return 1;
 
-	for (i = 0; i < array_Size(arr); i++) {
-		if (AIT_TYPE(array(arr, i, ait_val_t*)) == string)
-			printf("arr[%d]=%s\n", i, AIT_ADDR(array(arr, i, ait_val_t*)));
-		else
-			printf("arr[%d]#%ld\n", i, AIT_RAW(array(arr, i, ait_val_t*)));
+	display(arr);
+
+	printf("\nNeeded buffer size = %d\n", ait_vars2tlv(NULL, 0, arr));
+	printf("Serialized data to buffer = %d\n", (len = ait_vars2tlv(buf, sizeof buf, arr)));
+
+	f = open("test_tlv.bin", O_CREAT | O_WRONLY, 0644);
+	if (f == -1) {
+		ret = 2;
+		goto err;
 	}
+	if ((len = write(f, buf, len)) == -1) {
+		ret = 3;
+		goto err;
+	} else
+		printf("Wrote %d bytes to file test_tlv.bin\n", len);
 
 	ait_freeVars(&arr);
-	return 0;
+
+	arr = ait_tlv2vars(buf, len);
+	if (!arr) {
+		ret = 4;
+		goto err;
+	}
+	printf("\n>>> Built vars array from TLV buffer\n\n");
+	display(arr);
+
+	arr = ait_tlv2vars(buf, sizeof buf);
+	if (!arr) {
+		ret = 5;
+		goto err;
+	}
+	printf("\n>>> Built vars array from TLV buffer with zeros at the end\n\n");
+	display(arr);
+err:
+	if (f > 2)
+		close(f);
+	ait_freeVars(&arr);
+	return ret;
 }