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// Copyright (C) 2022-2023 Joel Rosdahl and other contributors
//
// See doc/AUTHORS.adoc for a complete list of contributors.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 51
// Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include "Bytes.hpp"
#include <assertions.hpp>
namespace util {
Bytes::Bytes(const Bytes& other) noexcept
: m_data(std::make_unique<uint8_t[]>(other.m_size)),
m_size(other.m_size),
m_capacity(other.m_size)
{
if (m_size > 0) {
std::memcpy(m_data.get(), other.m_data.get(), m_size);
}
}
Bytes::Bytes(Bytes&& other) noexcept
: m_data(std::move(other.m_data)),
m_size(other.m_size),
m_capacity(other.m_capacity)
{
other.m_data = nullptr;
other.m_size = 0;
other.m_capacity = 0;
}
Bytes&
Bytes::operator=(const Bytes& other) noexcept
{
if (&other == this) {
return *this;
}
m_data = std::make_unique<uint8_t[]>(other.m_size);
m_size = other.m_size;
m_capacity = other.m_size;
if (m_size > 0) {
std::memcpy(m_data.get(), other.m_data.get(), m_size);
}
return *this;
}
Bytes&
Bytes::operator=(Bytes&& other) noexcept
{
if (&other == this) {
return *this;
}
m_data = std::move(other.m_data);
m_size = other.m_size;
m_capacity = other.m_capacity;
other.m_data.reset();
other.m_size = 0;
other.m_capacity = 0;
return *this;
}
void
Bytes::reserve(size_t size) noexcept
{
if (size > m_capacity) {
auto data = std::make_unique<uint8_t[]>(size);
if (m_size > 0) {
std::memcpy(data.get(), m_data.get(), m_size);
}
m_data = std::move(data);
m_capacity = size;
}
}
void
Bytes::insert(const uint8_t* pos,
const uint8_t* first,
const uint8_t* last) noexcept
{
const size_t inserted_size = last - first;
if (inserted_size == 0) {
return;
}
const size_t offset = pos - m_data.get();
if (m_size + inserted_size > m_capacity) {
m_capacity = std::max(2 * m_capacity, m_size + inserted_size);
auto new_data = std::make_unique<uint8_t[]>(m_capacity);
if (offset > 0) {
std::memcpy(new_data.get(), m_data.get(), offset);
}
if (m_size > offset) {
std::memcpy(new_data.get() + offset + inserted_size,
m_data.get() + offset,
m_size - offset);
}
m_data = std::move(new_data);
} else if (m_size > offset) {
std::memmove(m_data.get() + offset + inserted_size,
m_data.get() + offset,
m_size - offset);
}
std::memcpy(m_data.get() + offset, first, inserted_size);
m_size += inserted_size;
}
void
Bytes::resize(size_t size) noexcept
{
if (size > m_capacity) {
auto new_data = std::make_unique<uint8_t[]>(size);
if (m_size > 0) {
std::memcpy(new_data.get(), m_data.get(), m_size);
}
m_data = std::move(new_data);
m_capacity = size;
}
m_size = size;
}
} // namespace util
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