private void WaitWhenDebuggerAttached()
{
if (Debugger.IsAttached)
{
_host.ReadValue("Press <enter> key to exit");
}
}
/// <summary>Gets the argument value.</summary>
/// <param name="consoleHost">The command line host.</param>
/// <param name="args">The arguments.</param>
/// <param name="property">The property.</param>
/// <returns>The value.</returns>
/// <exception cref="System.InvalidOperationException">Either the argument Name or Position can be set, but not both.</exception>
/// <exception cref="InvalidOperationException">Either the argument Name or Position can be set, but not both.</exception>
/// <exception cref="InvalidOperationException">The parameter has no default value.</exception>
public override object GetValue(IConsoleHost consoleHost, string[] args, PropertyInfo property)
{
if (!string.IsNullOrEmpty(Name) && Position > 0)
throw new InvalidOperationException("Either the argument Name or Position can be set, but not both.");
var value = GetPositionalArgumentValue(args);
if (value == null)
value = GetNamedArgumentValue(args, Name);
if (value != null)
return ConvertToType(value.ToString(), property.PropertyType);
if (!IsInteractiveMode(args) && DefaultValue != null)
return ConvertToType(DefaultValue.ToString(), property.PropertyType);
var stringVal = consoleHost.ReadValue(GetFullParameterDescription(property));
if (stringVal == "[default]")
{
if (DefaultValue != null)
return ConvertToType(DefaultValue.ToString(), property.PropertyType);
throw new InvalidOperationException("The parameter has no default value.");
}
return ConvertToType(stringVal, property.PropertyType);
}
/// <summary>
/// Prompt user to press a key before continuing
/// </summary>
/// <param name="message">Message to display</param>
private static void PromptInteractiveOnly(IConsoleHost host, string message)
{
if (host.InteractiveMode)
{
host.ReadValue(message);
}
}
/// <summary>
/// Read the command name using console host if it was not provided by call.
/// </summary>
/// <returns>Command name input by user</returns>
private string ReadCommandNameInteractive()
{
_consoleHost.WriteMessage("Commands: \n");
foreach (var command in Commands)
{
_consoleHost.WriteMessage(" " + command.Key + "\n");
}
return(_consoleHost.ReadValue("Command: "));
}
/// <summary>Runs the command.</summary>
/// <param name="processor">The processor.</param>
/// <param name="host">The host.</param>
/// <returns>The input object for the next command.</returns>
public Task<object> RunAsync(CommandLineProcessor processor, IConsoleHost host)
{
foreach (var pair in processor.Commands)
{
if (pair.Key != "help")
{
PrintCommand(host, pair);
host.ReadValue("Press <enter> key for next command...");
}
}
return Task.FromResult<object>(null);
}
/// <summary>Gets the argument value.</summary>
/// <param name="consoleHost">The command line host.</param>
/// <param name="args">The arguments.</param>
/// <param name="property">The property.</param>
/// <param name="command">The command.</param>
/// <param name="input">The output from the previous command in the chain.</param>
/// <param name="used">Indicates whether a value for the property was found in the given arguments.</param>
/// <returns>The value.</returns>
/// <exception cref="System.InvalidOperationException">Either the argument Name or Position can be set, but not both.</exception>
/// <exception cref="InvalidOperationException">Either the argument Name or Position can be set, but not both.</exception>
/// <exception cref="InvalidOperationException">The parameter has no default value.</exception>
public override object GetValue(IConsoleHost consoleHost, string[] args, PropertyInfo property, IConsoleCommand command, object input, out string used)
{
if (!string.IsNullOrEmpty(Name) && Position > 0)
{
throw new InvalidOperationException("Either the argument Name or Position can be set, but not both.");
}
used = null;
string value = null;
if (TryGetPositionalArgumentValue(args, ref used, out value))
{
return(ConvertToType(value, property.PropertyType));
}
if (TryGetNamedArgumentValue(args, ref used, out value))
{
return(ConvertToType(value, property.PropertyType));
}
if (AcceptsCommandInput && input != null)
{
return(input);
}
if (!IsInteractiveMode(args) && !IsRequired)
{
return(property.CanRead ? property.GetValue(command) : null);
}
if (ShowPrompt)
{
value = consoleHost.ReadValue(GetFullParameterDescription(property, command));
if (value == "[default]")
{
if (!IsRequired)
{
return(property.CanRead ? property.GetValue(command) : null);
}
throw new InvalidOperationException("The parameter '" + Name + "' is required.");
}
return(ConvertToType(value, property.PropertyType));
}
else
{
return(property.CanRead ? property.GetValue(command) : null);
}
}
/// <summary>Runs the command.</summary>
/// <param name="processor">The processor.</param>
/// <param name="host">The host.</param>
/// <returns>The input object for the next command.</returns>
public Task <object> RunAsync(CommandLineProcessor processor, IConsoleHost host)
{
if (!string.IsNullOrEmpty(Command) && char.IsLetter(Command[0]))
{
if (processor.Commands.ContainsKey(Command))
{
PrintCommand(host, processor.Commands.Single(c => c.Key == Command));
}
else
{
host.WriteMessage("Command '" + Command + "' could not be found...");
}
}
else
{
host.WriteMessage("\n");
host.WriteMessage("Usage:\n\n");
host.WriteMessage(" myapp.exe myCommand /myParameter:myValue /mySecondParameter:myValue\n\n");
host.WriteMessage("Commands:\n\n");
foreach (var command in processor.Commands.Where(c => c.Key != "help"))
{
host.WriteMessage(" " + command.Key + "\n");
}
host.ReadValue("Press <enter> key to show commands...");
foreach (var command in processor.Commands)
{
if (command.Key != "help")
{
PrintCommand(host, command);
host.ReadValue("Press <enter> key for next command...");
}
}
}
return(Task.FromResult <object>(null));
}
/// <summary>Gets the name of the command to execute.</summary>
/// <param name="args">The arguments.</param>
/// <returns>The command name.</returns>
protected string GetCommandName(string[] args)
{
if (args.Length == 0 || args[0].Length == 0 || !char.IsLetter(args[0][0]))
{
_consoleHost.WriteMessage("Commands: \n");
foreach (var command in Commands)
{
_consoleHost.WriteMessage(" " + command.Key + "\n");
}
return(_consoleHost.ReadValue("Command: ").ToLowerInvariant());
}
return(args[0].ToLowerInvariant());
}
