int uei_508_read_record(int m_port, char *m_buf, size_t m_buflen, const char *m_delim, uint32_t m_delimlen)
{
ph_buf_t *tmp_buf;
if ((tmp_buf = ph_bufq_consume_record(SL508_read_buffer[m_port], m_delim, m_delimlen))) {
size_t len = min((size_t)ph_buf_len(tmp_buf), m_buflen);
if (len) memcpy(m_buf, ph_buf_mem(tmp_buf), len);
ph_buf_delref(tmp_buf);
return len;
} else {
return 0;
}
}
static void test_straddle_edges(void)
{
const char *delim = "\r\n";
int delim_len = strlen(delim);
int default_buf_size = 8192;
int i;
char pad[8192];
memset(pad, 'x', sizeof(pad));
#define PAD_IT(__n) { \
uint64_t n = __n; \
while (n > 0) { \
ph_bufq_append(q, pad, MIN(n, sizeof(pad)), 0); \
n -= MIN(n, sizeof(pad)); \
} \
}
// We want two buffers: [8192][8192]
// And then to place our delimiter around the first boundary to verify
// that the delimiter matching operates correctly
// We define a cursor offset relative to the end of the first buffer
// (0 means the last byte of the delimiter is in the last byte of the
// first buffer, 1 means that the last delimiter byte is in the first
// byte of the second buffer)
for (i = - 2 * delim_len; i < 2 * delim_len; i++) {
ph_bufq_t *q;
q = ph_bufq_new(16*1024);
// Fill up the start of the buffer
uint64_t num_first = default_buf_size + i - delim_len;
// first data
PAD_IT(num_first);
is(num_first, ph_bufq_len(q));
// first delim
ph_bufq_append(q, delim, delim_len, 0);
// second data
PAD_IT(16);
// second delim
ph_bufq_append(q, delim, delim_len, 0);
ph_buf_t *first = ph_bufq_consume_record(q, delim, delim_len);
is_int(num_first + 2, ph_buf_len(first));
ph_buf_t *second = ph_bufq_consume_record(q, delim, delim_len);
is_int(18, ph_buf_len(second));
diag("for i = %d, num_first = %d. first->len=%d second->len=%d",
i, (int)num_first, (int)ph_buf_len(first), (int)ph_buf_len(second));
ph_buf_delref(first);
ph_buf_delref(second);
ph_bufq_free(q);
}
// Now, test the case where we have a partial match at a boundary, but not
// the true match until later
ph_bufq_t *q;
q = ph_bufq_new(24*1024);
PAD_IT(8191);
ph_bufq_append(q, "\r", 1, 0);
PAD_IT(8192);
ph_bufq_append(q, delim, delim_len, 0);
ph_buf_t *first = ph_bufq_consume_record(q, delim, delim_len);
is_int(16386, ph_buf_len(first));
ph_buf_delref(first);
ph_bufq_free(q);
}
