// SPDX-License-Identifier: 0BSD
// Copyright (c) 2024-2026 Sudo-Ivan / Quad4.io
package interfaces

const (
	KISS_FEND  = 0xC0
	KISS_FESC  = 0xDB
	KISS_TFEND = 0xDC
	KISS_TFESC = 0xDD
)

func escapeKISS(data []byte) []byte {
	escaped := make([]byte, 0, len(data)*2)
	for _, b := range data {
		if b == KISS_FEND {
			escaped = append(escaped, KISS_FESC, KISS_TFEND)
		} else if b == KISS_FESC {
			escaped = append(escaped, KISS_FESC, KISS_TFESC)
		} else {
			escaped = append(escaped, b)
		}
	}
	return escaped
}