public Location GetLocation(long ipnum)
{
int record_pointer;
byte[] record_buf = new byte[FULL_RECORD_LENGTH];
char[] record_buf2 = new char[FULL_RECORD_LENGTH];
int record_buf_offset = 0;
Location record = new Location();
int str_length = 0;
int j, Seek_country;
double latitude = 0, longitude = 0;
try {
Seek_country = SeekCountry(ipnum);
if (Seek_country == databaseSegments[0])
{
return(null);
}
record_pointer = Seek_country + ((2 * recordLength - 1) * databaseSegments[0]);
if (memoryMode == MemoryMode.Cached)
{
Array.Copy(dbbuffer, record_pointer, record_buf, 0, Math.Min(dbbuffer.Length - record_pointer, FULL_RECORD_LENGTH));
}
else
{
file.Seek(record_pointer, SeekOrigin.Begin);
file.Read(record_buf, 0, FULL_RECORD_LENGTH);
}
for (int a0 = 0; a0 < FULL_RECORD_LENGTH; a0++)
{
record_buf2[a0] = Convert.ToChar(record_buf[a0]);
}
// get country
record.CountryCode = CountryCodes[unsignedByteToInt(record_buf[0])];
record.CountryName = CountryNames[unsignedByteToInt(record_buf[0])];
record_buf_offset++;
// get region
while (record_buf[record_buf_offset + str_length] != '\0')
{
str_length++;
}
if (str_length > 0)
{
record.Region = new String(record_buf2, record_buf_offset, str_length);
}
record_buf_offset += str_length + 1;
str_length = 0;
// get region_name
record.RegionName = RegionName.GetRegionName(record.CountryCode, record.Region);
// get city
while (record_buf[record_buf_offset + str_length] != '\0')
{
str_length++;
}
if (str_length > 0)
{
record.City = new String(record_buf2, record_buf_offset, str_length);
}
record_buf_offset += (str_length + 1);
str_length = 0;
// get postal code
while (record_buf[record_buf_offset + str_length] != '\0')
{
str_length++;
}
if (str_length > 0)
{
record.PostalCode = new String(record_buf2, record_buf_offset, str_length);
}
record_buf_offset += (str_length + 1);
// get latitude
for (j = 0; j < 3; j++)
{
latitude += (unsignedByteToInt(record_buf[record_buf_offset + j]) << (j * 8));
}
record.Latitude = (float)latitude / 10000 - 180;
record_buf_offset += 3;
// get longitude
for (j = 0; j < 3; j++)
{
longitude += (unsignedByteToInt(record_buf[record_buf_offset + j]) << (j * 8));
}
record.Longitude = (float)longitude / 10000 - 180;
record.MetroCode = record.DmaCode = 0;
record.AreaCode = 0;
if (databaseType == DatabaseInfo.CITY_EDITION_REV1)
{
// get metro_code
int metroarea_combo = 0;
if (record.CountryCode == "US")
{
record_buf_offset += 3;
for (j = 0; j < 3; j++)
{
metroarea_combo += (unsignedByteToInt(record_buf[record_buf_offset + j]) << (j * 8));
}
record.MetroCode = record.DmaCode = metroarea_combo / 1000;
record.AreaCode = metroarea_combo % 1000;
}
}
} catch (IOException) {
Console.Write("IO Exception while seting up segments");
}
return(record);
}
public Location GetLocation(long ipnum)
{
byte[] recordBuf = new byte[FullRecordLength];
char[] recordBuf2 = new char[FullRecordLength];
int recordBufOffset = 0;
Location record = new Location();
int strLength = 0;
double latitude = 0, longitude = 0;
try
{
int seekCountry = this.SeekCountry(ipnum);
if (seekCountry == this.databaseSegments[0])
{
return(null);
}
int recordPointer = seekCountry + ((2 * this.recordLength - 1) * this.databaseSegments[0]);
this.dbStream.Seek(recordPointer, SeekOrigin.Begin);
this.dbStream.Read(recordBuf, 0, FullRecordLength);
for (int a0 = 0; a0 < FullRecordLength; a0++)
{
recordBuf2[a0] = Convert.ToChar(recordBuf[a0]);
}
// get country
record.CountryCode = CountryCodes[(recordBuf[0]).UnsignedByteToInt()];
record.CountryName = CountryNames[(recordBuf[0]).UnsignedByteToInt()];
recordBufOffset++;
// get region
while (recordBuf[recordBufOffset + strLength] != '\0')
{
strLength++;
}
if (strLength > 0)
{
record.Region = new string(recordBuf2, recordBufOffset, strLength);
}
recordBufOffset += strLength + 1;
strLength = 0;
// get region_name
record.RegionName = RegionName.GetRegionName(record.CountryCode, record.Region);
// get city
while (recordBuf[recordBufOffset + strLength] != '\0')
{
strLength++;
}
if (strLength > 0)
{
record.City = new string(recordBuf2, recordBufOffset, strLength);
}
recordBufOffset += (strLength + 1);
strLength = 0;
// get postal code
while (recordBuf[recordBufOffset + strLength] != '\0')
{
strLength++;
}
if (strLength > 0)
{
record.PostalCode = new string(recordBuf2, recordBufOffset, strLength);
}
recordBufOffset += (strLength + 1);
// get latitude
int j;
for (j = 0; j < 3; j++)
{
latitude += ((recordBuf[recordBufOffset + j]).UnsignedByteToInt() << (j * 8));
}
record.Latitude = (float)latitude / 10000 - 180;
recordBufOffset += 3;
// get longitude
for (j = 0; j < 3; j++)
{
longitude += ((recordBuf[recordBufOffset + j]).UnsignedByteToInt() << (j * 8));
}
record.Longitude = (float)longitude / 10000 - 180;
record.MetroCode = record.DMACode = 0;
record.AreaCode = 0;
if (this.databaseType == (byte)DatabaseType.CityEditionRev1)
{
// get metro_code
int metroareaCombo = 0;
if (record.CountryCode == "US")
{
recordBufOffset += 3;
for (j = 0; j < 3; j++)
{
metroareaCombo += ((recordBuf[recordBufOffset + j]).UnsignedByteToInt() << (j * 8));
}
record.MetroCode = record.DMACode = metroareaCombo / 1000;
record.AreaCode = metroareaCombo % 1000;
}
}
}
catch (IOException)
{
Console.Write("IO Exception while seting up segments");
}
return(record);
}
