private void HandleParsingErrorsInHelp(HelpText help)
{
if (this.LastPostParsingState.Errors.Count > 0)
{
var errors = help.RenderParsingErrorsText(this, 2); // indent with two spaces
if (!string.IsNullOrEmpty(errors))
{
help.AddPreOptionsLine(string.Concat(Environment.NewLine, "ERROR(S):"));
help.AddPreOptionsLine(errors);
}
}
}
public string GetUsage()
{
var help = new HelpText
{
Heading = "EventStore.Client",
AddDashesToOption = true
};
HandleParsingErrorsInHelp(help);
help.AddPreOptionsLine("Usage: EventStore.Client -i 127.0.0.1 -t 1113 -h 2113");
help.AddOptions(this);
return help;
}
/// <summary>
/// Creates a new instance of the <see cref="HelpText"/> class using common defaults.
/// </summary>
/// <returns>
/// An instance of <see cref="HelpText"/> class.
/// </returns>
/// <param name='options'>
/// The instance that collected command line arguments parsed with <see cref="CommandLineParser"/> class.
/// </param>
/// <param name='errDelegate'>
/// A delegate used to customize the text block for reporting parsing errors.
/// </param>
public static HelpText AutoBuild(object options, HandleParsingErrorsDelegate errDelegate)
{
var title = ReflectionUtil.GetAttribute<AssemblyTitleAttribute>();
if (title == null) throw new InvalidOperationException("HelpText::AutoBuild() requires that you define AssemblyTitleAttribute.");
var copyright = ReflectionUtil.GetAttribute<AssemblyCopyrightAttribute>();
if (copyright == null) throw new InvalidOperationException("HelpText::AutoBuild() requires that you define AssemblyCopyrightAttribute.");
var version = ReflectionUtil.GetAttribute<AssemblyInformationalVersionAttribute>();
// let AssemblyInformationalVersionAttribute be null because its not added to project by default and its not so crucial
var auto = new HelpText
{
Heading = new HeadingInfo(Path.GetFileNameWithoutExtension(title.Title), version != null ? version.InformationalVersion : "(unspecified)"),
Copyright = copyright.Copyright,
AdditionalNewLineAfterOption = true,
AddDashesToOption = true
};
if (errDelegate != null)
{
var typedTarget = options as CommandLineOptionsBase;
if (typedTarget != null)
{
errDelegate(auto);
}
}
var license = ReflectionUtil.GetAttribute<AssemblyLicenseAttribute>();
if (license != null)
{
//auto.AddPreOptionsLine(license.FullText);
license.AddToHelpText(auto, true);
}
var usage = ReflectionUtil.GetAttribute<AssemblyUsageAttribute>();
if (usage != null)
{
//auto.AddPreOptionsLine(usage.FullText);
usage.AddToHelpText(auto, true);
}
auto.AddOptions(options);
return auto;
}
public static void DefaultParsingErrorsHandler(CommandLineOptionsBase options, HelpText current)
{
if (options.InternalLastPostParsingState.Errors.Count > 0)
{
var errors = current.RenderParsingErrorsText(options, 2); // indent with two spaces
if (!string.IsNullOrEmpty(errors))
{
current.AddPreOptionsLine(string.Concat(Environment.NewLine, current.SentenceBuilder.ErrorsHeadingText));
//current.AddPreOptionsLine(errors);
var lines = errors.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
foreach (var line in lines) { current.AddPreOptionsLine(line); }
}
}
}
/*
public string FullText
{
get
{
if (string.IsNullOrEmpty(_fullText))
{
if (!string.IsNullOrEmpty(_line1))
{
var builder = new StringBuilder(_line1);
builder.AppendLineIfNotNullOrEmpty(_line2);
builder.AppendLineIfNotNullOrEmpty(_line3);
builder.AppendLineIfNotNullOrEmpty(_line4);
builder.AppendLineIfNotNullOrEmpty(_line5);
_fullText = builder.ToString();
}
}
return _fullText;
}
}
*/
internal void AddToHelpText(HelpText helpText, bool before)
{
if (before)
{
if (!string.IsNullOrEmpty(_line1)) helpText.AddPreOptionsLine(_line1);
if (!string.IsNullOrEmpty(_line2)) helpText.AddPreOptionsLine(_line2);
if (!string.IsNullOrEmpty(_line3)) helpText.AddPreOptionsLine(_line3);
if (!string.IsNullOrEmpty(_line4)) helpText.AddPreOptionsLine(_line4);
if (!string.IsNullOrEmpty(_line5)) helpText.AddPreOptionsLine(_line5);
}
else
{
if (!string.IsNullOrEmpty(_line1)) helpText.AddPostOptionsLine(_line1);
if (!string.IsNullOrEmpty(_line2)) helpText.AddPostOptionsLine(_line2);
if (!string.IsNullOrEmpty(_line3)) helpText.AddPostOptionsLine(_line3);
if (!string.IsNullOrEmpty(_line4)) helpText.AddPostOptionsLine(_line4);
if (!string.IsNullOrEmpty(_line5)) helpText.AddPostOptionsLine(_line5);
}
}
