public object Parse()
{
FieldInfo[] fields = argumentsType.GetFields();
object argumentObject = Activator.CreateInstance(argumentsType);
foreach (FieldInfo field in fields)
{
object[] attributes = field.GetCustomAttributes(typeof(CommandLineAttribute), true);
if (attributes.Length > 0)
{
object attrObject = attributes[0];
CommandLineAttribute attr = (CommandLineAttribute)attrObject;
object argumentValue = GetArgument(attrObject, attr.Name, true);
if (argumentValue != null)
{
SetValue(field, argumentObject, argumentValue);
}
else if (!attr.Optional)
{
throw new CommandLineArgumentException(string.Format("Expected argument '{0}'", attr.Name));
}
}
}
return(argumentObject);
}
private string GetUsage(CommandLineAttribute attr)
{
string usage = " ";
if (attr is CommandLineValueAttribute)
{
CommandLineValueAttribute cattr = (CommandLineValueAttribute)attr;
if (cattr.Place != -1)
{
return(" <" + attr.Name + ">");
}
}
if (attr.Optional)
{
usage += "[";
}
usage += "/" + attr.Name;
if (attr.AlternateName != null)
{
usage += "|/" + attr.AlternateName;
}
if (attr is CommandLineValueAttribute)
{
usage += " <value>";
}
if (attr.Optional)
{
usage += "]";
}
return(usage);
}
private object GetArgument(object attrObject, string name, bool alternate)
{
object argumentValue = null;
CommandLineAttribute attr = (CommandLineAttribute)attrObject;
if (attrObject is CommandLineValueAttribute)
{
CommandLineValueAttribute cattr = (CommandLineValueAttribute)attr;
if (cattr.Place != -1)
{
if (cattr.Place <= arguments.Length && !arguments[cattr.Place - 1].StartsWith("/") && !arguments[cattr.Place - 1].StartsWith("-"))
{
return(arguments[cattr.Place - 1]);
}
else
{
if (!cattr.Optional)
{
throw new CommandLineArgumentException("Missing parameters");
}
}
}
else
{
argumentValue = GetArgumentValue(name);
}
}
else
{
int index = GetArgumentIndex(name);
if (attrObject is CommandLineFlagAttribute && index != -1)
{
argumentValue = !arguments[index].EndsWith("-");
}
}
if (argumentValue == null && alternate && attr.AlternateName != null)
{
return(GetArgument(attrObject, attr.AlternateName, false));
}
else
{
return(argumentValue);
}
}
private string GetDescription(CommandLineAttribute attr)
{
string description = "\r\n";
if (attr is CommandLineValueAttribute)
{
CommandLineValueAttribute cattr = (CommandLineValueAttribute)attr;
if (cattr.Place != -1)
{
description = "\r\n<" + attr.Name + ">";
return(description.PadRight(30) + attr.Description);
}
}
description += "/" + attr.Name;
if (attr is CommandLineValueAttribute)
{
description += " <value>";
}
description = description.PadRight(30);
description += attr.Description;
return(description);
}
private string GetUsage(CommandLineAttribute attr)
{
string usage = " ";
if (attr is CommandLineValueAttribute)
{
CommandLineValueAttribute cattr = (CommandLineValueAttribute) attr;
if (cattr.Place != -1)
return " <" + attr.Name + ">";
}
if (attr.Optional)
usage += "[";
usage += "/" + attr.Name;
if (attr.AlternateName != null)
usage += "|/" + attr.AlternateName;
if (attr is CommandLineValueAttribute)
usage += " <value>";
if (attr.Optional)
usage += "]";
return usage;
}
private string GetDescription(CommandLineAttribute attr)
{
string description = "\r\n";
if (attr is CommandLineValueAttribute)
{
CommandLineValueAttribute cattr = (CommandLineValueAttribute) attr;
if (cattr.Place != -1)
{
description = "\r\n<" + attr.Name + ">";
return description.PadRight(30) + attr.Description;
}
}
description += "/" + attr.Name;
if (attr is CommandLineValueAttribute)
description += " <value>";
description = description.PadRight(30);
description += attr.Description;
return description;
}