Function buffer_get

Plugins/UnLuaExtensions/LuaSocket/Source/src/buffer.cpp:260–273

-------------------------------------------------------------------------*\ * Return any data available in buffer, or get more data from transport layer * if buffer is empty \*-------------------------------------------------------------------------*/

* if buffer is empty
\*-------------------------------------------------------------------------*/
static int buffer_get(p_buffer buf, const char **data, size_t *count) {
    int err = IO_DONE;
    p_io io = buf->io;
    p_timeout tm = buf->tm;
    if (buffer_isempty(buf)) {
        size_t got;
        err = io->recv(io->ctx, buf->data, BUF_SIZE, &got, tm);
        buf->first = 0;
        buf->last = got;
    }
    *count = buf->last - buf->first;
    *data = buf->data + buf->first;
    return err;
}