KRecord Stock::
getKRecordByDate(const Datetime& datetime, KQuery::KType ktype) const {
size_t startix = 0, endix = 0;
KQuery query = KQueryByDate(datetime, Datetime(datetime.number() + 1), ktype);
if (getIndexRange(query, startix, endix)) {
return getKRecord(startix, ktype);
}
return Null<KRecord>();
}
PriceList HistoryFinanceReader
::getHistoryFinanceInfo(Datetime date,
const string& market, const string& code) {
string funcname(" [HistoryFinanceReader::getHistoryFinanceInfo]");
PriceList result;
string filename(m_dir + "/gpcw"
+ boost::lexical_cast<string>(date.number() / 10000)
+ ".dat");
FILE *fp = fopen(filename.c_str(), "rb");
if (NULL == fp) {
HKU_INFO("Can't found " << filename << funcname);
return result;
}
unsigned int report_date = 0;
unsigned short max_count = 0;
unsigned long report_size = 0;
char header_buf[20];
if (!fread(header_buf, 1, 20, fp)) {
HKU_ERROR("read data failed! " << filename << funcname);
fclose(fp);
return result;
}
memcpy(&report_date, header_buf + 2, 4);
memcpy(&max_count, header_buf + 6, 2);
memcpy(&report_size, header_buf + 12, 4);
char stock_code[7];
hku_uint32 address = 0;
for (int i = 0; i < max_count; i++) {
if (!fread(stock_code, 1, 7, fp)) {
HKU_ERROR("read stock_code failed! " << filename << funcname);
fclose(fp);
return result;
}
if (!fread(&address, 4, 1, fp)) {
HKU_ERROR("read stock_item address failed! " << filename << funcname);
fclose(fp);
return result;
}
stock_code[6] = '\0';
if (strcmp(stock_code, code.c_str()) == 0) {
break;
}
}
if (address != 0) {
const int MAX_COL_NUM = 350;
float result_buffer[MAX_COL_NUM];
int report_fields_count = int(report_size / 4);
if (report_fields_count >= MAX_COL_NUM) {
HKU_WARN("Over MAX_COL_NUM! " << filename << funcname);
report_fields_count = MAX_COL_NUM;
}
fseek(fp, address, SEEK_SET);
if (!fread(result_buffer, 4, report_fields_count, fp)) {
HKU_ERROR("read col data failed! " << filename << funcname);
fclose(fp);
return result;
}
result.reserve(report_fields_count);
price_t null_price = Null<price_t>();
for (int i = 0; i < report_fields_count; i++) {
if (result_buffer[i] == 0xf8f8f8f8) {
result.push_back(null_price);
} else {
result.push_back(result_buffer[i]);
}
}
} else {
HKU_ERROR("Invalid address(0)! " << filename << funcname);
}
fclose(fp);
return result;
}