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//
// Copyright (c) 2019 Damian Jarek(damian.jarek93@gmail.com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/boostorg/beast
//
#ifndef BOOST_BEAST_DETAIL_IMPL_TEMPORARY_BUFFER_IPP
#define BOOST_BEAST_DETAIL_IMPL_TEMPORARY_BUFFER_IPP
#include <boost/beast/core/detail/temporary_buffer.hpp>
#include <boost/beast/core/detail/clamp.hpp>
#include <boost/core/exchange.hpp>
#include <boost/assert.hpp>
#include <memory>
#include <cstring>
namespace boost {
namespace beast {
namespace detail {
void
temporary_buffer::
append(string_view s)
{
grow(s.size());
unchecked_append(s);
}
void
temporary_buffer::
append(string_view s1, string_view s2)
{
grow(s1.size() + s2.size());
unchecked_append(s1);
unchecked_append(s2);
}
void
temporary_buffer::
unchecked_append(string_view s)
{
auto n = s.size();
std::memcpy(&data_[size_], s.data(), n);
size_ += n;
}
void
temporary_buffer::
grow(std::size_t n)
{
if (capacity_ - size_ >= n)
return;
auto const capacity = (n + size_) * 2u;
BOOST_ASSERT(! detail::sum_exceeds(
n, size_, capacity));
char* const p = new char[capacity];
std::memcpy(p, data_, size_);
deallocate(boost::exchange(data_, p));
capacity_ = capacity;
}
} // detail
} // beast
} // boost
#endif
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