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/*
* File: core/chunk_string.hpp
* Purpose: String implementation for the OCL C++ library.
* Author: Amlal El Mahrouss (amlal@nekernel.org)
* Copyright 2025, Amlal El Mahrouss
*/
#ifndef OCL_UTILITY_CHUNK_STRING_HPP
#define OCL_UTILITY_CHUNK_STRING_HPP
#include <lib/core/includes.hpp>
#include <boost/container/flat_set.hpp>
namespace ocl
{
template <typename char_type>
class basic_chunk_string;
template <typename char_type>
struct basic_chunk_string final
{
private:
std::unique_ptr<basic_chunk_string<char_type>> next_chunk_string_{};
basic_chunk_string<char_type>* prev_chunk_string_{nullptr};
std::basic_string<char_type> packed_chunks_{};
int64_t chunk_total{};
constexpr const static auto max_chunk_size = 4096;
public:
basic_chunk_string() = default;
basic_chunk_string(const char_type* in)
{
this->operator+=(in);
}
basic_chunk_string(const std::basic_string<char_type>& in)
{
this->operator+=(in);
}
~basic_chunk_string() = default;
basic_chunk_string& operator=(const basic_chunk_string&) = default;
basic_chunk_string(const basic_chunk_string&) = default;
basic_chunk_string& operator+=(const std::basic_string<char_type>& in)
{
if (in.empty())
return *this;
if (chunk_total > max_chunk_size)
{
next_chunk_string_ = std::make_unique<basic_chunk_string<char_type>>();
*next_chunk_string_ += in;
next_chunk_string_->prev_chunk_string_ = this;
return *next_chunk_string_;
}
packed_chunks_ += in;
chunk_total += in.size();
return *this;
}
const std::basic_string<char_type>& str() const noexcept
{
return packed_chunks_;
}
void print() noexcept
{
ocl::io::print(packed_chunks_);
if (next_chunk_string_)
this->next_chunk_string_->print();
}
};
template <typename char_type>
inline void print(basic_chunk_string<char_type>& fmt) noexcept
{
fmt.print();
}
} // namespace ocl
#endif // ifndef OCL_UTILITY_CHUNK_STRING_HPP
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