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/*
* Copyright (c) 2018-2021, 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.
*/
#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() { }
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(StringView 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?
append(String::formatted(fmtstr, parameters...));
}
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 };
};
}
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