ladybird/Kernel/CommandLine.cpp
Andreas Kling e3b450005f Kernel: Remove CommandLine::get() in favor of lookup()
lookup() returns an Optional<String> which allows us to implement easy
default values using lookup(key).value_or(default_value);
2020-04-18 14:22:42 +02:00

74 lines
2.2 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <Kernel/CommandLine.h>
namespace Kernel {
static CommandLine* s_the;
const CommandLine& kernel_command_line()
{
ASSERT(s_the);
return *s_the;
}
void CommandLine::initialize(const String& string)
{
s_the = new CommandLine(string);
}
CommandLine::CommandLine(const String& string)
: m_string(string)
{
s_the = this;
for (auto str : m_string.split(' ')) {
if (str == "") {
continue;
}
auto pair = str.split_limit('=', 2);
if (pair.size() == 1) {
m_params.set(pair[0], "");
} else {
m_params.set(pair[0], pair[1]);
}
}
}
Optional<String> CommandLine::lookup(const String& key) const
{
return m_params.get(key);
}
bool CommandLine::contains(const String& key) const
{
return m_params.contains(key);
}
}