public static string GetcnIpRange(Dictionary <IPAddress, int> ipv4Subnets)
{
var sb = new StringBuilder("[\n{");
uint startNum = 0;
var comma = @"";
foreach (var ipv4Subnet in ipv4Subnets)
{
var p = new IPv4Subnet(ipv4Subnet.Key, ipv4Subnet.Value);
while (IPv4Subnet.IPv42UintBE(p.FirstIP) >> 24 > startNum)
{
++startNum;
sb.Append(@"},{");
comma = @"";
}
sb.Append(comma);
sb.Append(@"0x");
sb.Append(Convert.ToString(IPv4Subnet.IPv42UintBE(p.FirstIP) / 256, 16));
sb.Append(@":");
sb.Append(ipv4Subnet.Value / 256);
comma = @",";
}
sb.Append("}\n];");
return(sb.ToString());
}
public static string GetcnIp16Range(Dictionary <IPAddress, int> ipv4Subnets)
{
var sb = new StringBuilder("{\n");
var masterNetSet = new SortedSet <uint>();
foreach (var ipv4Subnet in ipv4Subnets)
{
var p = new IPv4Subnet(ipv4Subnet.Key, ipv4Subnet.Value);
if (ipv4Subnet.Value < 1 << 14)
{
masterNetSet.Add(IPv4Subnet.IPv42UintBE(p.FirstIP) >> 14);
}
}
var masterNet = new List <uint>(masterNetSet.Count);
foreach (var x in masterNetSet)
{
masterNet.Add(x);
}
//masterNet.Sort();
foreach (var x in masterNet)
{
sb.Append(@"0x");
sb.Append(Convert.ToString(x, 16));
sb.Append(@":1,");
}
sb.Remove(sb.Length - 1, 1);
sb.Append("\n};");
return(sb.ToString());
}
private static KeyValuePair <IPAddress, int>?GetCNIPv4InfoFromLine(string str)
{
if (string.IsNullOrWhiteSpace(str))
{
return(null);
}
var reg = new Regex("^(.+)/(.+)$");
var match = reg.Match(str);
if (match.Groups.Count == 3)
{
var ipv4 = IPAddress.Parse(match.Groups[1].Value);
var hosts = IPv4Subnet.CIDR2Hosts(Convert.ToInt32(match.Groups[2].Value));
return(new KeyValuePair <IPAddress, int>(ipv4, hosts));
}
return(null);
}