public int Try()
{
var theUsageWriter = new CmdLineUsageWriter(myDefinition);
if (myDefinition.HasDifferentiatedSubcommands && !myDefinition.Subcommands.Any())
{
throw new InvalidOperationException("At least one subcommand must be added to the definition.");
}
if (myDefinition.HasDifferentiatedSubcommands && myArgs.Length < 1)
{
theUsageWriter.WriteAndExit();
return(-1);
}
// Default Command suchen
CmdLineSubcommand?theSubcommand = myDefinition.Subcommands.SingleOrDefault(
sc => sc.Name == CmdLineSubcommand.DefaultName
);
if (!myDefinition.HasDifferentiatedSubcommands && theSubcommand == null)
{
throw new InvalidOperationException(
"Without differentiated commands a subcommand with the name \"default\" must be added to the definition."
);
}
// Token-List erstellen und passenden Subcommand ermitteln (im Fehlerfall wird
// hier die Usage erklärt und mit ReturnCode -1 der Prozess beendet)
var theTokenizer = new CmdLineTokenizer(myDefinition, theUsageWriter);
List <CmdLineToken> theTokens = theTokenizer.Tokenize(myArgs, ref theSubcommand);
// Subcommand ausführen
return(theSubcommand !.Execute(theTokens, myDefinition));
}
/// <summary>Writes the usage help for the specified subcommand to
/// the console.</summary>
/// <param name="subcommandName">Name of the subcommand</param>
public void ShowHelp(string subcommandName)
{
if (subcommandName == null)
{
throw new ArgumentNullException(nameof(subcommandName));
}
CmdLineSubcommand theSubcommand = Subcommands.SingleOrDefault(sc => sc.Name == subcommandName);
if (theSubcommand == null)
{
throw new ArgumentException($"Subcommand \"{subcommandName}\" is not defined.");
}
var theUsageWriter = new CmdLineUsageWriter(this);
theUsageWriter.WriteAndExit(theSubcommand);
}
/// <summary>Writes the usage help to the console.</summary>
public void ShowHelp()
{
var theUsageWriter = new CmdLineUsageWriter(this);
theUsageWriter.WriteAndExit();
}
public CmdLineTokenizer(CmdLineDefinition definition, CmdLineUsageWriter usageWriter)
{
myDefinition = definition;
myUsageWriter = usageWriter;
}
