Initial import.

TLV.h

@@ -0,0 +1,44 @@
+#ifndef KIMODEM_TLV_H
+#define KIMODEM_TLV_H
+
+#include <cstdint>
+
+#include "Arena.h"
+
+
+#ifndef TLV_MAX_LEN
+#define TLV_MAX_LEN	253
+#endif
+
+
+#define TAG_EMPTY	0
+
+
+namespace TLV {
+
+
+struct Record {
+	uint8_t		Tag;
+	uint8_t		Len;
+	char		Val[TLV_MAX_LEN];
+};
+
+
+uint8_t	*write_to_memory(Arena &, uint8_t *, Record &);
+void	 read_from_memory(Record &, uint8_t *);
+void	 set_record(Record &, uint8_t, uint8_t, const char *);
+void	 delete_record(Arena &, uint8_t *);
+
+/* 
+ * returns a pointer to memory where the record was found,
+ * e.g. find_tag(...)[0] is the tag of the found record.
+ */
+uint8_t *find_tag(Arena &, uint8_t *, Record &);
+uint8_t	*find_empty(Arena &, uint8_t *);
+uint8_t	*skip_record(Record &, uint8_t *);
+
+
+} // namespace TLV
+
+
+#endif