mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-13 01:59:14 +03:00
93c3b6bdd2
This avoids some of the the shortest-lived allocations in the kernel: StringImpl::create_uninitialized(unsigned long, char*&) StringImpl::create(char const*, unsigned long, ShouldChomp) StringBuilder::to_string() const String::vformatted(StringView, TypeErasedFormatParams) void Kernel::KBufferBuilder::appendff<unsigned int>(...) JsonObjectSerializer<Kernel::KBufferBuilder>::add(..., unsigned int) Kernel::procfs$all(Kernel::InodeIdentifier, ...) const Kernel::procfs$all(Kernel::InodeIdentifier, Kernel::KBufferBuilder&)
59 lines
1.4 KiB
C++
59 lines
1.4 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/String.h>
|
|
#include <Kernel/KBuffer.h>
|
|
#include <stdarg.h>
|
|
|
|
namespace Kernel {
|
|
|
|
class KBufferBuilder {
|
|
public:
|
|
using OutputType = KBuffer;
|
|
|
|
explicit KBufferBuilder(bool can_expand = false);
|
|
explicit KBufferBuilder(RefPtr<KBufferImpl>&, bool can_expand = false);
|
|
KBufferBuilder(KBufferBuilder&&) = default;
|
|
~KBufferBuilder() = default;
|
|
|
|
void append(const StringView&);
|
|
void append(char);
|
|
void append(const char*, int);
|
|
|
|
void append_escaped_for_json(const StringView&);
|
|
void append_bytes(ReadonlyBytes);
|
|
|
|
template<typename... Parameters>
|
|
void appendff(CheckedFormatString<Parameters...>&& fmtstr, const Parameters&... parameters)
|
|
{
|
|
// FIXME: This is really not the way to go about it, but vformat expects a
|
|
// StringBuilder. Why does this class exist anyways?
|
|
StringBuilder builder;
|
|
vformat(builder, fmtstr.view(), AK::VariadicFormatParams { parameters... });
|
|
append_bytes(builder.string_view().bytes());
|
|
}
|
|
|
|
bool flush();
|
|
OwnPtr<KBuffer> build();
|
|
|
|
private:
|
|
bool check_expand(size_t);
|
|
u8* insertion_ptr()
|
|
{
|
|
if (!m_buffer)
|
|
return nullptr;
|
|
return m_buffer->data() + m_size;
|
|
}
|
|
|
|
RefPtr<KBufferImpl> m_buffer;
|
|
size_t m_size { 0 };
|
|
bool m_can_expand { false };
|
|
};
|
|
|
|
}
|