void
case_buf_isempty()
{
struct buf *buf1 = buf("test");
struct buf *buf2 = buf(NULL);
assert(!buf_isempty(buf1));
assert(buf_isempty(buf2));
buf_free(buf1);
buf_free(buf2);
}
int Dequeue(RingBuffer* buf, uint8_t *data)
{
if(buf_isempty(buf)) {
printf("buf is empty\n");
}
else {
*data = buf_get_byte(buf);
printf("Dequeue: %d\n\n", *data);
}
return 1;
}
/*-------------------------------------------------------------------------*\
* Return any data available in buffer, or get more data from transport layer
* if buffer is empty
\*-------------------------------------------------------------------------*/
static int buf_get(p_buf buf, const char **data, size_t *count) {
int err = IO_DONE;
p_io io = buf->io;
p_tm tm = buf->tm;
if (buf_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;
}
/*-------------------------------------------------------------------------*\
* Skips a given number of bytes from read buffer. No data is read from the
* transport layer
\*-------------------------------------------------------------------------*/
static void buf_skip(p_buf buf, size_t count) {
buf->received += count;
buf->first += count;
if (buf_isempty(buf))
buf->first = buf->last = 0;
}
