read_to_string.h

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#pragma once
 
#include "di/container/string/prelude.h"
#include "di/container/view/transform.h"
#include "di/io/read_all.h"
 
namespace di::io {
namespace detail {
    struct ReadToString {
        constexpr auto operator()(Impl<Reader> auto& reader) const -> Result<String> {
            auto buffer = DI_TRY(read_all(reader));
 
            // FIXME: consider using reinterpret_cast<> when not in constexpr context.
            return util::move(buffer) | view::transform([](auto byte) {
                       return static_cast<c8>(byte);
                   }) |
                   container::to<Vector>() | container::to<String>();
        }
    };
}
 
constexpr inline auto read_to_string = detail::ReadToString {};
}
 
namespace di {
using io::read_to_string;
}