qdr_field_t *qdr_field(const char *text)
{
size_t length = text ? strlen(text) : 0;
size_t ilength = length;
if (length == 0)
return 0;
qdr_field_t *field = new_qdr_field_t();
qd_buffer_t *buf;
ZERO(field);
while (length > 0) {
buf = qd_buffer();
size_t cap = qd_buffer_capacity(buf);
size_t copy = length > cap ? cap : length;
memcpy(qd_buffer_cursor(buf), text, copy);
qd_buffer_insert(buf, copy);
length -= copy;
text += copy;
DEQ_INSERT_TAIL(field->buffers, buf);
}
field->iterator = qd_field_iterator_buffer(DEQ_HEAD(field->buffers), 0, ilength);
return field;
}
qd_field_iterator_t *qd_message_field_iterator_typed(qd_message_t *msg, qd_message_field_t field)
{
qd_field_location_t *loc = qd_message_field_location(msg, field);
if (!loc)
return 0;
return qd_field_iterator_buffer(loc->buffer, loc->offset, loc->length + loc->hdr_length);
}
qd_field_iterator_t *qd_message_field_iterator(qd_message_t *msg, qd_message_field_t field)
{
qd_field_location_t *loc = qd_message_field_location(msg, field);
if (!loc)
return 0;
if (loc->tag == QD_AMQP_NULL)
return 0;
qd_buffer_t *buffer = loc->buffer;
unsigned char *cursor = qd_buffer_base(loc->buffer) + loc->offset;
advance(&cursor, &buffer, loc->hdr_length, 0, 0);
return qd_field_iterator_buffer(buffer, cursor - qd_buffer_base(buffer), loc->length);
}
qdr_field_t *qdr_field_from_iter(qd_field_iterator_t *iter)
{
qdr_field_t *field = new_qdr_field_t();
qd_buffer_t *buf;
int remaining;
int length;
ZERO(field);
qd_field_iterator_reset(iter);
remaining = qd_field_iterator_remaining(iter);
length = remaining;
while (remaining) {
buf = qd_buffer();
size_t cap = qd_buffer_capacity(buf);
int copied = qd_field_iterator_ncopy(iter, qd_buffer_cursor(buf), cap);
qd_buffer_insert(buf, copied);
DEQ_INSERT_TAIL(field->buffers, buf);
remaining = qd_field_iterator_remaining(iter);
}
field->iterator = qd_field_iterator_buffer(DEQ_HEAD(field->buffers), 0, length);
return field;
}
