/// <summary>
/// Attempts to set the address line type based
/// on the address contained within.
/// </summary>
/// <returns></returns>
public HostFileLineEntryType SetTypeFromAddress()
{
IPAddress ipAddr;
if (IPAddress.TryParse(Address, out ipAddr))
{
Type = (ipAddr.AddressFamily == AddrFamily.InterNetwork)
? HostFileLineEntryType.HostForIPv4
: (ipAddr.AddressFamily == AddrFamily.InterNetworkV6)
? HostFileLineEntryType.HostForIPv6
: HostFileLineEntryType.Unknown;
}
return(Type);
}
/// <summary>
/// Takes a single line from the host file and parses
/// it. A host entry is returned for valid lines.
/// </summary>
/// <param name="line">line to parse</param>
/// <returns>A host entry</returns>
private static HostFileEntry ParseLine(string line, out HostFileLineEntryType type)
{
type = HostFileLineEntryType.Blank;
if (String.IsNullOrWhiteSpace(line))
{
return(null);
}
var empty = new Regex(EmptyCommentLineRegex);
if (empty.IsMatch(line) || line.Trim().StartsWith("#"))
{
type = HostFileLineEntryType.Comment;
return(null);
}
var items = line.Split(new[] { ' ', '\t' }, StringSplitOptions.RemoveEmptyEntries);
if (items.Length < 2)
{
type = HostFileLineEntryType.Unknown;
return(null);
}
var entry = new HostFileEntry()
{
Address = items[0].Trim(),
Hostname = items[1].Trim()
};
type = entry.SetTypeFromAddress();
return(entry);
// END FUNCTION
}
