static int Main(string[] args)
{
Opts opts;
if (!Opts.TryParse(args, out opts))
{
return(1);
}
try
{
TextReader hostnames;
if (String.IsNullOrEmpty(opts.filename))
{
hostnames = Console.In;
}
else
{
hostnames = new StreamReader(opts.filename, detectEncodingFromByteOrderMarks: true);
}
using (hostnames)
{
new MaxTasks().Start(
tasks: Spi.Misc.ReadLines(hostnames).Select(h => ResolveAndPingAsync(h.Trim(), opts.resolveOnly)),
MaxParallel: 128)
.Wait();
}
}
catch (Exception ex)
{
Console.Error.WriteLine(ex.Message);
Console.Error.WriteLine(ex.StackTrace);
return(8);
}
return(0);
}
public static bool TryParse(string[] args, out Opts opts)
{
bool showHelp = false;
opts = null;
Opts tmpOpts = new Opts()
{
resolveOnly = false,
filename = null
};
var options = new Spi.BeeOptsBuilder()
.Add('h', "help", Spi.OPTTYPE.BOOL, "print usage", v => showHelp = true)
.Add('r', "resolve", Spi.OPTTYPE.BOOL, "only resolve hostnames", v => tmpOpts.resolveOnly = true)
.GetOpts();
List <string> argValues = Spi.BeeOpts.Parse(args, options, OnUnknown: null);
if (argValues.Count > 0)
{
tmpOpts.filename = argValues[0];
}
if (showHelp)
{
ShowUsage(options);
return(false);
}
opts = tmpOpts;
return(true);
}