Asynchronous Pipe Read

[starlight-traveler]

Hello!

This may be more of a feature request or simply an implementation issue that I am not following, however is there support for asynchronous pipe reads, for instance can I read every line that comes in from the buffer instead of waiting for the execution of the program to complete.

void rnsd_dameon(quill::Logger *logger)
{
    // Start the rnsd subprocess with output piped
    Popen popen = RunBuilder({"rnsd"})
                      .cout(PipeOption::pipe)
                      .popen();

    // Buffer to store the output
    char buf[1024];

    // Read from the output pipe until there's no more data
    size_t bytes_read = 0;
    while ((bytes_read = subprocess::pipe_read(popen.cout, buf, sizeof(buf) - 1)) > 0)
    {
        buf[bytes_read] = '\0';           // Null-terminate the string
        LOG_INFO(logger, "RNSD: {}", buf); 
        std::memset(buf, 0, sizeof(buf)); // Clear the buffer
    }

    // // Close the process and handle cleanup
    // popen.close();
}

For instance rnsd is a subprocess that outputs logging information, however only when I force terminate the program will we see anything output to stdrr. Is this simply a limitation of the library or am I missing something?