AsyncStreamReader.hpp

[詳解]

//
//    非同期ストリーム読み取り
//
//    Copyright (c) 2022 udonrobo
//
 
#pragma once
 
#include <Udon/Types/StringView.hpp>
 
namespace Udon
{
    class AsyncStreamReader
    {
 
        Stream& istream;
 
        char  buffer[256];
        char* iterator;
 
    public:
        AsyncStreamReader(Stream& istream)
            : istream(istream)
            , buffer()
            , iterator(buffer)
        {
        }
 
        Udon::StringView readStringUntil(char terminate)
        {
            while (istream.available())
            {
                const auto read = istream.read();
 
                if (read == -1)
                {
                    continue;
                }
 
                if (iterator == std::end(buffer))
                {
                    break;
                }
 
                if (read == terminate)
                {
                    const auto end = iterator;
                    iterator       = buffer;
                    return { buffer, end };
                }
 
                *iterator = read;
                ++iterator;
            }
 
            return { buffer, (size_t)0 };
        }
    };
 
}    // namespace Udon