public override void Execute()
{
base.Execute();
List <string> singleOptionList = CatOptions.GetSingleOptions();
CommandLineOptions cloptions = CommandLineParser.Parse(Arguments.ToArray <string>(), singleOptionList.ToArray());
options = ParseOptions(cloptions);
CheckOptions(options);
if (options.IsSetHelp)
{
RaiseCommandLineUsage(this, CatOptions.Usage);
}
else if (options.IsSetVersion)
{
RaiseCommandLineUsage(this, Version);
}
else
{
StartCat();
}
Terminate();
}
private static CatCommandLineOptions ParseOptions(CommandLineOptions commandLineOptions)
{
if (commandLineOptions == null)
{
throw new CommandLineException(string.Format(CultureInfo.CurrentCulture,
"Option used in invalid context -- {0}", "must specify a option."));
}
CatCommandLineOptions targetOptions = new CatCommandLineOptions();
if (commandLineOptions.Arguments.Count >= 0)
{
foreach (var arg in commandLineOptions.Arguments.Keys)
{
CatOptionType optionType = CatOptions.GetOptionType(arg);
if (optionType == CatOptionType.None)
{
throw new CommandLineException(
string.Format(CultureInfo.CurrentCulture, "Option used in invalid context -- {0}",
string.Format(CultureInfo.CurrentCulture, "cannot parse the command line argument : [{0}].", arg)));
}
switch (optionType)
{
case CatOptionType.InputFile:
targetOptions.InputFile = commandLineOptions.Arguments[arg];
break;
case CatOptionType.LineNumber:
targetOptions.IsSetLineNumber = true;
break;
case CatOptionType.Help:
targetOptions.IsSetHelp = true;
break;
case CatOptionType.Version:
targetOptions.IsSetVersion = true;
break;
}
}
}
if (commandLineOptions.Parameters.Count > 0)
{
if (string.IsNullOrEmpty(targetOptions.InputFile))
{
targetOptions.InputFile = commandLineOptions.Parameters.First();
}
}
return(targetOptions);
}