//find or default a parameter with two arguments
public Result Default <T, U>(string @switch, out T tval, out U uval,
T tdef = default(T), U udef = default(U))
where T : IConvertible where U : IConvertible
{
tval = tdef;
uval = udef;
int i = Args.IndexOf(@switch);
if (i == -1)
{
return(Result.Missing);
}
if (i + 2 >= Args.Count)
{
Tell.MissingArgument(@switch);
return(Result.Invalid);
}
if (!Aids.TryParse(Args[i + 1], out tval))
{
Tell.CouldNotParse(@switch, Args[i + 1]);
return(Result.Invalid);
}
if (!Aids.TryParse(Args[i + 2], out uval))
{
Tell.CouldNotParse(@switch, Args[i + 2]);
return(Result.Invalid);
}
Args.RemoveAt(i + 2);
Args.RemoveAt(i + 1);
Args.RemoveAt(i);
return(Result.Good);
}
public Result Expect(out string val, string name)
{
if (Result.Good != Has(out val) || String.IsNullOrWhiteSpace(val))
{
Tell.MustProvideInput(name);
return(Result.Invalid);
}
return(Result.Good);
}
public static bool Parse(string[] args, out string[] prunedArgs)
{
prunedArgs = null;
var pArgs = new List <string>();
int len = args.Length;
for (int a = 0; a < len; a++)
{
string curr = args[a];
if (curr == "-h" || curr == "--help")
{
if (Method == PickMethod.None)
{
ShowFullHelp = true;
}
else
{
ShowHelpMethods = true;
}
}
else if (curr == "--methods")
{
ShowHelpMethods = true;
}
else if (Method == PickMethod.None)
{
PickMethod which;
if (!Aids.TryParse <PickMethod>(curr, out which))
{
Tell.UnknownMethod(curr);
return(false);
}
Method = which;
}
else
{
pArgs.Add(curr);
}
}
if (ShowFullHelp || ShowHelpMethods)
{
Usage(Method);
return(false);
}
if (Method == PickMethod.None)
{
Tell.MethodNotSpecified();
return(false);
}
prunedArgs = pArgs.ToArray();
return(true);
}
public Result Expect <T>(string @switch, out T val) where T : IConvertible
{
var has = Default(@switch, out val);
if (Result.Good != has)
{
if (has == Result.Missing)
{
Tell.MustProvideInput(@switch);
}
return(Result.Invalid);
}
return(Result.Good);
}
public Result Expect(string @switch)
{
var has = Has(@switch);
if (Result.Good != has)
{
if (has == Result.Missing)
{
Tell.MustProvideInput(@switch);
}
return(Result.Invalid);
}
return(Result.Good);
}
//find or default a parameter with one argument
public Result Default <T>(string @switch, out T val, T def = default(T)) where T : IConvertible
{
val = def;
int i = Args.IndexOf(@switch);
if (i == -1)
{
return(Result.Missing);
}
if (i + 1 >= Args.Count)
{
Tell.MissingArgument(@switch);
return(Result.Invalid);
}
if (!Aids.TryParse(Args[i + 1], out val))
{
Tell.CouldNotParse(@switch, Args[i + 1]);
return(Result.Invalid);
}
Args.RemoveAt(i + 1);
Args.RemoveAt(i);
return(Result.Good);
}
