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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#include <Kernel/CommandLine.h>
28
29namespace Kernel {
30
31static CommandLine* s_the;
32
33const CommandLine& kernel_command_line()
34{
35 ASSERT(s_the);
36 return *s_the;
37}
38
39void CommandLine::initialize(const String& string)
40{
41 s_the = new CommandLine(string);
42}
43
44CommandLine::CommandLine(const String& string)
45 : m_string(string)
46{
47 s_the = this;
48
49 for (auto str : m_string.split(' ')) {
50 if (str == "") {
51 continue;
52 }
53
54 auto pair = str.split_limit('=', 2);
55
56 if (pair.size() == 1) {
57 m_params.set(pair[0], "");
58 } else {
59 m_params.set(pair[0], pair[1]);
60 }
61 }
62}
63
64Optional<String> CommandLine::lookup(const String& key) const
65{
66 return m_params.get(key);
67}
68
69String CommandLine::get(const String& key) const
70{
71 return m_params.get(key).value_or({});
72}
73
74bool CommandLine::contains(const String& key) const
75{
76 return m_params.contains(key);
77}
78
79}