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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#pragma once
28
29#include <AK/String.h>
30#include <AK/StringBuilder.h>
31#include <AK/Types.h>
32
33#define CMD_WILL 0xfb
34#define CMD_WONT 0xfc
35#define CMD_DO 0xfd
36#define CMD_DONT 0xfe
37#define SUB_ECHO 0x01
38#define SUB_SUPPRESS_GO_AHEAD 0x03
39
40struct Command {
41 u8 command;
42 u8 subcommand;
43
44 String to_string() const
45 {
46 StringBuilder builder;
47
48 switch (command) {
49 case CMD_WILL:
50 builder.append("WILL");
51 break;
52 case CMD_WONT:
53 builder.append("WONT");
54 break;
55 case CMD_DO:
56 builder.append("DO");
57 break;
58 case CMD_DONT:
59 builder.append("DONT");
60 break;
61 default:
62 builder.append(String::format("UNKNOWN<%02x>", command));
63 break;
64 }
65
66 builder.append(" ");
67
68 switch (subcommand) {
69 case SUB_ECHO:
70 builder.append("ECHO");
71 break;
72 case SUB_SUPPRESS_GO_AHEAD:
73 builder.append("SUPPRESS_GO_AHEAD");
74 break;
75 default:
76 builder.append(String::format("UNKNOWN<%02x>"));
77 break;
78 }
79
80 return builder.to_string();
81 };
82};