internal OptionProcessingHelper(Options options, ArgumentDictionary arguments)
{
_parent = options;
_arguments = arguments;
}
private Options(ArgumentDictionary arguments)
{
OptionProcessingHelper optionProcessor = new OptionProcessingHelper(this, arguments);
optionProcessor.ProcessArguments();
}
internal static ArgumentDictionary ParseCommand(string[] cmd, CommandSwitch[] switches)
{
ArgumentDictionary arguments; //switches/values from cmd line
string arg; //argument to test next
CommandSwitch argSwitch; //switch corresponding to that argument
string argValue; //value corresponding to that argument
int delim; //location of value delimiter (':' or '=')
arguments = new ArgumentDictionary(cmd.Length);
foreach (string s in cmd)
{
arg = s;
bool argIsFlag = true;
//if argument does not start with switch indicator, place into "default" arguments
if (arg[0] != '-')
{
arguments.Add(String.Empty, arg);
continue;
}
//if we have something which begins with '--' or '-', throw if nothing after it
if (arg == "-" || arg == "--")
{
throw new ArgumentException(SR.Format(SR.ErrSwitchMissing, arg));
}
//yank switch indicator ('--' or '-') off of command argument
if (arg[1] != '-')
{
arg = arg.Substring(1);
}
else
{
arg = arg.Substring(2);
}
//check to make sure delimiter does not start off switch
delim = arg.IndexOfAny(new char[] { ':', '=' });
if (delim == 0)
{
throw new ArgumentException(SR.Format(SR.ErrUnexpectedDelimiter));
}
//if there is no value, than create a null string
if (delim == (-1))
{
argValue = String.Empty;
}
else
{
//assume valid argument now; must remove value attached to it
//must avoid copying delimeter into either arguments
argValue = arg.Substring(delim + 1);
arg = arg.Substring(0, delim);
argIsFlag = false;
}
//check if this switch exists in the list of possible switches
//if no match found, then throw an exception
argSwitch = CommandSwitch.FindSwitch(arg.ToLower(CultureInfo.InvariantCulture), switches);
if (argSwitch == null)
{
// Paths start with "/" on Unix, so the arg could potentially be a path.
// If we didn't find any matched option, check and see if it's a path.
string potentialPath = "/" + arg;
if (File.Exists(potentialPath))
{
arguments.Add(string.Empty, potentialPath);
continue;
}
throw new ArgumentException(SR.Format(SR.ErrUnknownSwitch, arg.ToLower(CultureInfo.InvariantCulture)));
}
//check if switch is allowed to have a value
// if not and a value has been specified, then thrown an exception
if (argSwitch.SwitchType == SwitchType.Flag)
{
if (!argIsFlag)
{
throw new ArgumentException(SR.Format(SR.ErrUnexpectedValue, arg.ToLower(CultureInfo.InvariantCulture)));
}
}
else
{
if (argIsFlag)
{
throw new ArgumentException(SR.Format(SR.ErrExpectedValue, arg.ToLower(CultureInfo.InvariantCulture)));
}
}
//check if switch is allowed to be specified multiple times
// if not and it has already been specified and a new value has been paresd, throw an exception
if (argSwitch.SwitchType != SwitchType.ValueList && arguments.ContainsArgument(argSwitch.Name))
{
throw new ArgumentException(SR.Format(SR.ErrSingleUseSwitch, arg.ToLower(CultureInfo.InvariantCulture)));
}
else
{
arguments.Add(argSwitch.Name, argValue);
}
}
return(arguments);
}