static void fix_message_unparse(struct fix_message *self)
{
struct fix_field sender_comp_id;
struct fix_field target_comp_id;
struct fix_field begin_string;
struct fix_field sending_time;
struct fix_field body_length;
struct fix_field msg_seq_num;
struct fix_field check_sum;
struct fix_field msg_type;
unsigned long cksum;
char fmt[64], buf[64];
struct timeval tv;
struct tm *tm;
int i;
gettimeofday(&tv, NULL);
tm = gmtime(&tv.tv_sec);
assert(tm != NULL);
/* YYYYMMDD-HH:MM:SS.sss */
strftime(fmt, sizeof fmt, "%Y%m%d-%H:%M:%S", tm);
snprintf(buf, sizeof buf, "%s.%03ld", fmt, (long)tv.tv_usec / 1000);
/* standard header */
msg_type = FIX_STRING_FIELD(MsgType, self->msg_type);
sender_comp_id = FIX_STRING_FIELD(SenderCompID, self->sender_comp_id);
target_comp_id = FIX_STRING_FIELD(TargetCompID, self->target_comp_id);
msg_seq_num = FIX_INT_FIELD (MsgSeqNum, self->msg_seq_num);
sending_time = FIX_STRING_FIELD(SendingTime, buf);
/* body */
fix_field_unparse(&msg_type, self->body_buf);
fix_field_unparse(&sender_comp_id, self->body_buf);
fix_field_unparse(&target_comp_id, self->body_buf);
fix_field_unparse(&msg_seq_num, self->body_buf);
fix_field_unparse(&sending_time, self->body_buf);
for (i = 0; i < self->nr_fields; i++)
fix_field_unparse(&self->fields[i], self->body_buf);
/* head */
begin_string = FIX_STRING_FIELD(BeginString, self->begin_string);
body_length = FIX_INT_FIELD(BodyLength, buffer_size(self->body_buf));
fix_field_unparse(&begin_string, self->head_buf);
fix_field_unparse(&body_length, self->head_buf);
/* trailer */
cksum = buffer_sum(self->head_buf) + buffer_sum(self->body_buf);
check_sum = FIX_CHECKSUM_FIELD(CheckSum, cksum % 256);
fix_field_unparse(&check_sum, self->body_buf);
}
void fix_message_unparse(struct fix_message *self)
{
struct fix_field sender_comp_id;
struct fix_field target_comp_id;
struct fix_field begin_string;
struct fix_field sending_time;
struct fix_field body_length;
struct fix_field msg_seq_num;
struct fix_field check_sum;
struct fix_field msg_type;
unsigned long cksum;
char buf[64];
int i;
TRACE(LIBTRADING_FIX_MESSAGE_UNPARSE(self));
strncpy(buf, self->str_now, sizeof(buf));
/* standard header */
msg_type = (self->type != FIX_MSG_TYPE_UNKNOWN) ?
FIX_STRING_FIELD(MsgType, fix_msg_types[self->type]) :
FIX_STRING_FIELD(MsgType, self->msg_type);
sender_comp_id = FIX_STRING_FIELD(SenderCompID, self->sender_comp_id);
target_comp_id = FIX_STRING_FIELD(TargetCompID, self->target_comp_id);
msg_seq_num = FIX_INT_FIELD (MsgSeqNum, self->msg_seq_num);
sending_time = FIX_STRING_FIELD(SendingTime, buf);
/* body */
fix_field_unparse(&msg_type, self->body_buf);
fix_field_unparse(&sender_comp_id, self->body_buf);
fix_field_unparse(&target_comp_id, self->body_buf);
fix_field_unparse(&msg_seq_num, self->body_buf);
fix_field_unparse(&sending_time, self->body_buf);
for (i = 0; i < self->nr_fields; i++)
fix_field_unparse(&self->fields[i], self->body_buf);
/* head */
begin_string = FIX_STRING_FIELD(BeginString, self->begin_string);
body_length = FIX_INT_FIELD(BodyLength, buffer_size(self->body_buf));
fix_field_unparse(&begin_string, self->head_buf);
fix_field_unparse(&body_length, self->head_buf);
/* trailer */
cksum = buffer_sum(self->head_buf) + buffer_sum(self->body_buf);
check_sum = FIX_CHECKSUM_FIELD(CheckSum, cksum % 256);
fix_field_unparse(&check_sum, self->body_buf);
TRACE(LIBTRADING_FIX_MESSAGE_UNPARSE_RET());
}
static void rest_of_message(struct fix_message *self, struct buffer *buffer)
{
int tag = 0;
const char *tag_ptr = NULL;
unsigned long nr_fields = 0;
self->nr_fields = 0;
retry:
if (!(tag_ptr = parse_field_promisc(buffer, &tag)))
return;
switch (tag) {
case CheckSum:
break;
case BeginSeqNo:
case EndSeqNo:
self->fields[nr_fields++] = FIX_INT_FIELD(tag, strtol(tag_ptr, NULL, 10));
goto retry;
case MsgSeqNum:
self->msg_seq_num = strtol(tag_ptr, NULL, 10);
goto retry;
default:
goto retry;
};
self->nr_fields = nr_fields;
}
static void rest_of_message(struct fix_message *self, struct fix_dialect *dialect, struct buffer *buffer)
{
int tag = 0;
const char *tag_ptr = NULL;
unsigned long nr_fields = 0;
enum fix_type type;
self->nr_fields = 0;
retry:
if (parse_field(buffer, &tag, &tag_ptr))
return;
type = dialect->tag_type(tag);
switch (type) {
case FIX_TYPE_INT:
self->fields[nr_fields++] = FIX_INT_FIELD(tag, fix_atoi64(tag_ptr, NULL));
goto retry;
case FIX_TYPE_FLOAT:
self->fields[nr_fields++] = FIX_FLOAT_FIELD(tag, strtod(tag_ptr, NULL));
goto retry;
case FIX_TYPE_CHAR:
self->fields[nr_fields++] = FIX_CHAR_FIELD(tag, tag_ptr[0]);
goto retry;
case FIX_TYPE_STRING:
self->fields[nr_fields++] = FIX_STRING_FIELD(tag, tag_ptr);
goto retry;
case FIX_TYPE_CHECKSUM:
break;
case FIX_TYPE_MSGSEQNUM:
self->msg_seq_num = fix_uatoi(tag_ptr, NULL);
goto retry;
default:
goto retry;
}
self->nr_fields = nr_fields;
}
int init_elem(struct felem *elem, char *line)
{
char *start;
char *end;
int tag;
if (!elem)
return 1;
start = strcpy(elem->buf, line);
while (1) {
if (*start == 0x00 || *start == 0x0A)
break;
tag = strtol(start, &end, 10);
end++;
switch (tag) {
case EncryptMethod:
case HeartBtInt:
case BeginSeqNo:
case NewSeqNo:
case EndSeqNo:
elem->msg.fields[elem->msg.nr_fields++] = FIX_INT_FIELD(tag, strtol(end, NULL, 10));
break;
case ResetSeqNumFlag:
case GapFillFlag:
case SendingTime:
case TestReqID:
elem->msg.fields[elem->msg.nr_fields++] = FIX_STRING_FIELD(tag, end);
break;
case MsgSeqNum:
elem->msg.msg_seq_num = strtol(end, NULL, 10);
break;
case BodyLength:
elem->msg.body_length = strtol(end, NULL, 10);
break;
case SenderCompID:
elem->msg.sender_comp_id = end;
break;
case TargetCompID:
elem->msg.target_comp_id = end;
break;
case BeginString:
elem->msg.begin_string = end;
break;
case CheckSum:
elem->msg.check_sum = end;
break;
case MsgType:
elem->msg.type = fix_msg_type_parse(end);
elem->msg.msg_type = end;
break;
default: /* Unsupported Tag */
return 1;
}
while (*end != 0x00 && *end != 0x01 && *end != 0x0A)
end++;
if (*end == 0x00 || *end == 0x0A) {
*end = 0x00;
break;
}
*end = 0x00;
start = end + 1;
}
return 0;
}
