public IExecutable ExecuteCommand(string line)
{
string[] inputArgs = line.Split(new[] { '(', ',', ')' }, StringSplitOptions.RemoveEmptyEntries);
string command = inputArgs[0];
string[] parameters = inputArgs.Skip(1).Select(p => p.Trim()).ToArray();
IExecutable commandResult = null;
switch (command)
{
case "AddTheatre":
commandResult = new AddTheatreCommand(parameters, this.performanceDatabase);
break;
case "PrintAllTheatres":
commandResult = new PrintAllTheatresCommand(this.performanceDatabase);
break;
case "AddPerformance":
commandResult = new AddPerformanceCommand(parameters, this.performanceDatabase);
break;
case "PrintAllPerformances":
commandResult = new PrintAllPerformancesCommand(this.performanceDatabase);
break;
case "PrintPerformances":
commandResult = new PrintPerformancesCommand(parameters, this.performanceDatabase);
break;
default:
commandResult = new InvalidResultCommand(this.performanceDatabase);
break;
}
return commandResult;
}
public virtual ICommand CreateCommand(string commandName, IPerformanceDatabase performanceDatabase, IRenderer renderer)
{
ICommand command = null;
switch (commandName.ToLower())
{
case "addperformance":
command = new AddPerformanceCommand(performanceDatabase, renderer);
break;
case "addtheatre":
command = new AddTheatreCommand(performanceDatabase, renderer);
break;
case "printallperformances":
command = new PrintAllPerformancesCommand(performanceDatabase, renderer);
break;
case "printalltheatres":
command = new PrintAllTheatresCommand(performanceDatabase, renderer);
break;
case "printperformances":
command = new PrintPerformancesCommand(performanceDatabase, renderer);
break;
default:
throw new ArgumentException("Invalid command!");
}
return(command);
}
public void ExecuteCommand(string inputLine)
{
string[] commandLine = inputLine.Split('(');
string commandName = commandLine[0];
string[] commandArgumentsArray =
commandLine[1]
.Split(
new[] { '(', ',', ')' },
StringSplitOptions.RemoveEmptyEntries)
.Select(p => p.Trim())
.ToArray();
ICommand command = null;
switch (commandName)
{
case "AddTheatre":
command = new AddTheatreCommand(commandArgumentsArray, this.performanceDatabase);
break;
case "PrintAllTheatres":
command = new PrintAllTheatersCommand(commandArgumentsArray, this.performanceDatabase);
break;
case "AddPerformance":
command = new AddPerformanceCommand(commandArgumentsArray, this.performanceDatabase);
break;
case "PrintAllPerformances":
command = new PrintAllPerformancesCommand(commandArgumentsArray, this.performanceDatabase);
break;
case "PrintPerformances":
command = new PrintPerformancesCommand(commandArgumentsArray, this.performanceDatabase);
break;
default:
throw new NotImplementedException("The command with name " + commandName + " is not defined/implemented.");
}
string commandResult;
try
{
commandResult = command.Execute();
}
catch (Exception ex)
{
commandResult = "Error: " + ex.Message;
}
Console.WriteLine(commandResult);
}
