//Iterate through each switch in the list of allowed switches.
private void ValidateSwitches(int mode)
{
foreach (KeyValuePair <SwitchAttribute, SwitchMethodInfo> kvp in _switches)
{
//Get the switch parameter sets for the given switch.
SpecifiedSwitchParameters specifiedParameters = _specifiedSwitches.FindBySwitchNames(
kvp.Key.Name, kvp.Key.ShortName, !kvp.Key.CaseSensitive);
//If the switch is specified on the command-line, check the number of it's
//occurences. If they do not match the number specified by it's Switch attribute,
//throw an exception.
if (specifiedParameters != null)
{
if (specifiedParameters.Count < kvp.Key.MinOccurences)
{
throw new CommandLineException(CommandLineException.Codes.TooFewSwitches,
CommandLineException.Messages.TooFewSwitches, kvp.Key.MinOccurences, kvp.Key.Name);
}
if (specifiedParameters.Count > kvp.Key.MaxOccurences)
{
throw new CommandLineException(CommandLineException.Codes.TooManySwitches,
CommandLineException.Messages.TooManySwitches, kvp.Key.MaxOccurences, kvp.Key.Name);
}
}
//Check if a switch usage is specified for the switch in the current mode. If not,
//simply ignore it and continue with the iteration.
SwitchUsageAttribute switchUsageAttribute = kvp.Value.FindByModeUsageByMode(mode);
if (switchUsageAttribute == null)
{
continue;
}
//Check if the iterated switch is actually specified in the current command-line by
//looking in the _specifiedSwitches field. Check this against it's mode usage
//specification for the current mode, and if there a problem, throw an exception.
bool switchSpecified = specifiedParameters != null;
if (switchUsageAttribute.SwitchUsage == SwitchUsage.Mandatory && !switchSpecified)
{
throw new CommandLineException(CommandLineException.Codes.MandatorySwitchAbsent,
CommandLineException.Messages.MandatorySwitchAbsent, kvp.Key.Name);
}
if (switchUsageAttribute.SwitchUsage == SwitchUsage.NotAllowed && switchSpecified)
{
throw new CommandLineException(CommandLineException.Codes.NonRequiredSwitchPresent,
CommandLineException.Messages.NonRequiredSwitchPresent, kvp.Key.Name);
}
}
}
//Iterate through the command line arguments, parse for switches and cache any switches and
//parameters in local fields.
private void ParseCommandLine()
{
Regex switchRegex = new Regex(@"^[\-\/]([\w\?]+)");
Regex paramRegex = new Regex(@"([\s\S\w][^,]*)");
ArgumentType previousType = ArgumentType.NotSet;
ArgumentType currentType = ArgumentType.NotSet;
foreach (string arg in _args)
{
this.VerifyCommandLineGrouping(previousType, currentType);
previousType = currentType;
Match switchMatch = switchRegex.Match(arg);
if (!switchMatch.Success)
{
currentType = ArgumentType.Parameter;
_specifiedParameters.Add(arg);
continue;
}
currentType = ArgumentType.Switch;
string switchName = switchMatch.Groups[1].Value;
SpecifiedSwitchParameters specifiedSwitchParameters;
if (!_specifiedSwitches.TryGetValue(switchName, out specifiedSwitchParameters))
{
specifiedSwitchParameters = new SpecifiedSwitchParameters();
_specifiedSwitches.Add(switchName, specifiedSwitchParameters);
}
List <string> switchParameters = new List <string>();
specifiedSwitchParameters.Add(switchParameters);
//If no switch parameters are specified, stop processing
if (arg.Length == switchName.Length + 1)
{
continue;
}
;
if (arg[switchName.Length + 1] != ':')
{
throw new Exception("Invalid switch parameter separator");
}
MatchCollection parameterMatches = paramRegex.Matches(arg, switchMatch.Length + 1);
foreach (Match parameterMatch in parameterMatches)
{
string value = parameterMatch.Groups[1].Value;
if (value.StartsWith(","))
{
value = value.Remove(0, 1);
}
switchParameters.Add(value);
}
}
this.VerifyCommandLineGrouping(previousType, currentType);
}
