/// <summary>
/// Gets the word in a switch from the current argument or parses a file.
/// For example -foo, /foo, or --foo would return 'foo'.
/// </summary>
/// <param name="args">
/// The command line parameters to be processed.
/// </param>
/// <param name="argIndex">
/// The index in args to the argument to process.
/// </param>
/// <param name="parser">
/// Used to parse files in the args. If not supplied, Files will not be parsed.
/// </param>
/// <param name="noexitSeen">
/// Used during parsing files.
/// </param>
/// <returns>
/// Returns a Tuple:
/// The first value is a String called SwitchKey with the word in a switch from the current argument or null.
/// The second value is a bool called ShouldBreak, indicating if the parsing look should break.
/// </returns>
private static (string SwitchKey, bool ShouldBreak) GetSwitchKey(string[] args, ref int argIndex, CommandLineParameterParser parser, ref bool noexitSeen)
{
string switchKey = args[argIndex].Trim().ToLowerInvariant();
if (string.IsNullOrEmpty(switchKey))
{
return(SwitchKey : null, ShouldBreak : false);
}
if (!CharExtensions.IsDash(switchKey[0]) && switchKey[0] != '/')
{
// then its a file
if (parser != null)
{
--argIndex;
parser.ParseFile(args, ref argIndex, noexitSeen);
}
return(SwitchKey : null, ShouldBreak : true);
}
// chop off the first character so that we're agnostic wrt specifying / or -
// in front of the switch name.
switchKey = switchKey.Substring(1);
// chop off the second dash so we're agnostic wrt specifying - or --
if (!string.IsNullOrEmpty(switchKey) && CharExtensions.IsDash(switchKey[0]))
{
switchKey = switchKey.Substring(1);
}
return(SwitchKey : switchKey, ShouldBreak : false);
}
