/// <summary>
/// 搜索IP地址搜索
/// </summary>
/// <param name="ip"></param>
/// <returns></returns>
public IpLocation SearchIpLocation(string ip)
{
//将字符IP转换为字节
string[] ipSp = ip.Split('.');
if (ipSp.Length != 4)
{
throw new ArgumentOutOfRangeException("不是合法的IP地址!");
}
byte[] IP = new byte[4];
for (int i = 0; i < IP.Length; i++)
{
IP[i] = (byte)(Int32.Parse(ipSp[i]) & 0xFF);
}
IpLocation local = null;
long offset = LocateIp(IP);
if (offset != -1)
{
local = GetIpLocation(offset);
}
if (local == null)
{
local = new IpLocation();
local.Area = UnArea;
local.Country = UnCountry;
}
return(local);
}
/// <summary>
/// 获取版本
/// </summary>
/// <returns></returns>
public IpLocation GetCopy()
{
IpLocation ret = new IpLocation();
ret.Country = Country;
ret.Area = Area;
return(ret);
}
/// <summary>
/// 构造函数
/// </summary>
/// <param name="ipfile">IP数据库文件绝对路径</param>
public QqWry(string ipfile)
{
_buf = new byte[100];
_b3 = new byte[3];
_b4 = new byte[4];
try
{
_ipFile = new FileStream(ipfile, FileMode.Open, FileAccess.Read, FileShare.Read);
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
_ipBegin = ReadLong4(0);
_ipEnd = ReadLong4(4);
_loc = new IpLocation();
}