| public PromptForLine ( string message ) : string | ||
| message | string | the prompt message |
| return | string | |
/// <summary>
/// Prompts the user to enter a value for the given property in the case that the option was specified with no value
/// </summary>
/// <param name="context">the parser context</param>
public override void BeforePopulateProperty(ArgHook.HookContext context)
{
if (context.ArgumentValue == string.Empty)
{
var cli = new CliHelper();
ITabCompletionHandler tabHandler;
IHighlighterConfigurator highlighterConfigurator;
if (TabCompletionHandlerType.TryCreate<ITabCompletionHandler>(out tabHandler))
{
cli.Reader.TabHandler.TabCompletionHandlers.Add(tabHandler);
}
if (HighlighterConfiguratorType.TryCreate<IHighlighterConfigurator>(out highlighterConfigurator))
{
cli.Reader.Highlighter = new SimpleSyntaxHighlighter();
highlighterConfigurator.Configure(cli.Reader.Highlighter);
}
context.ArgumentValue = cli.PromptForLine("Enter value for " + context.CurrentArgument.DefaultAlias);
}
}
private bool TryPreventExceptionWithPrompt(ArgHook.HookContext context)
{
if (parent.PromptIfMissing && ArgHook.HookContext.Current.Definition.IsNonInteractive == false)
{
var cli = new CliHelper();
ITabCompletionHandler tabHandler;
IHighlighterConfigurator highlighterConfigurator;
if (TabCompletionHandlerType.TryCreate<ITabCompletionHandler>(out tabHandler))
{
cli.Reader.TabHandler.TabCompletionHandlers.Add(tabHandler);
}
if (HighlighterConfiguratorType.TryCreate<IHighlighterConfigurator>(out highlighterConfigurator))
{
cli.Reader.Highlighter = new SimpleSyntaxHighlighter();
highlighterConfigurator.Configure(cli.Reader.Highlighter);
}
cli.Reader.UnregisterHandler(ConsoleKey.Escape);
cli.Reader.RegisterHandler(KeyHandler.FromAction((searchReaderContext) =>
{
TabCompletion tabCompletionInfo;
if (context.Definition.IsNonInteractive == false &&
context.Definition.Metadata.TryGetMeta<TabCompletion>(out tabCompletionInfo) &&
tabCompletionInfo.REPL == true)
{
// if this is an interactive REPL then continue the REPL in this case as the user may have changed their mind about taking
// this action - Note there are two places in this file that have this logic
throw new REPLContinueException();
}
else
{
throw new MissingArgException("The argument '" + context.CurrentArgument.DefaultAlias + "' is required", new ArgumentNullException(context.CurrentArgument.DefaultAlias));
}
}, ConsoleKey.Escape));
context.ArgumentValue = cli.PromptForLine("Enter value for " + context.CurrentArgument.DefaultAlias);
context.CurrentArgument.Populate(context);
return true;
}
else
{
return false;
}
}
/// <summary>
/// Validates that the user actually specified a value and optionally prompts them when it is missing.
/// </summary>
/// <param name="argument">The argument being populated. This validator doesn't do anything with it.</param>
/// <param name="arg">The value specified on the command line or null if it wasn't specified</param>
public override void ValidateAlways(CommandLineArgument argument, ref string arg)
{
if (IsConditionallyRequired)
{
var matchingHook = (from h in argument.Metadata.Metas<ArgRequiredConditionalHook>() where h.parent == this select h).SingleOrDefault();
if(matchingHook == null)
{
argument.Metadata.Add(new ArgRequiredConditionalHook(this));
}
}
if (IsConditionallyRequired == false && arg == null && PromptIfMissing && ArgHook.HookContext.Current.Definition.IsNonInteractive == false)
{
var cli = new CliHelper();
ITabCompletionHandler tabHandler;
IHighlighterConfigurator highlighterConfigurator;
if (TabCompletionHandlerType.TryCreate<ITabCompletionHandler>(out tabHandler))
{
cli.Reader.TabHandler.TabCompletionHandlers.Add(tabHandler);
}
if (HighlighterConfiguratorType.TryCreate<IHighlighterConfigurator>(out highlighterConfigurator))
{
cli.Reader.Highlighter = new SimpleSyntaxHighlighter();
highlighterConfigurator.Configure(cli.Reader.Highlighter);
}
cli.Reader.UnregisterHandler(ConsoleKey.Escape);
cli.Reader.RegisterHandler(KeyHandler.FromAction((searchReaderContext) =>
{
TabCompletion tabCompletionInfo;
if (ArgHook.HookContext.Current.Definition.IsNonInteractive == false &&
ArgHook.HookContext.Current.Definition.Metadata.TryGetMeta<TabCompletion>(out tabCompletionInfo)
&& tabCompletionInfo.REPL == true)
{
// if this is an interactive REPL then continue the REPL in this case as the user may have changed their mind about taking
// this action - Note there are two places in this file that have this logic
throw new REPLContinueException();
}
else
{
throw new MissingArgException("The argument '" + argument.DefaultAlias + "' is required", new ArgumentNullException(argument.DefaultAlias));
}
}, ConsoleKey.Escape));
arg = cli.PromptForLine("Enter value for " + argument.DefaultAlias);
}
if (arg == null && IsConditionallyRequired == false)
{
throw new MissingArgException("The argument '" + argument.DefaultAlias + "' is required", new ArgumentNullException(argument.DefaultAlias));
}
}
