private void AddOption(string requiredWord, int maxLength, BaseOptionAttribute option, int widthOfHelpText)
{
OptionsHelp.Append(" ");
var optionName = new StringBuilder(maxLength);
if (option.HasShortName)
{
if (AddDashesToOption)
{
optionName.Append('-');
}
optionName.AppendFormat("{0}", option.ShortName);
if (option.HasLongName)
{
optionName.Append(", ");
}
}
if (option.HasLongName)
{
if (AddDashesToOption)
{
optionName.Append("--");
}
optionName.AppendFormat("{0}", option.LongName);
}
OptionsHelp.Append(optionName.Length < maxLength
? optionName.ToString().PadRight(maxLength)
: optionName.ToString());
OptionsHelp.Append(" ");
if (option.Required)
{
option.HelpText =
string.Format(CultureInfo.InvariantCulture, "{0} ", requiredWord) + option.HelpText;
}
var e = new FormatOptionHelpTextEventArgs(option);
OnFormatOptionHelpText(e);
option.HelpText = e.Option.HelpText;
if (!string.IsNullOrWhiteSpace(option.HelpText))
{
do
{
var wordBuffer = 0;
var words = option.HelpText.Split(new[] { ' ' });
for (var i = 0; i < words.Length; i++)
{
if (words[i].Length < (widthOfHelpText - wordBuffer))
{
OptionsHelp.Append(words[i]);
wordBuffer += words[i].Length;
if ((widthOfHelpText - wordBuffer) > 1 && i != words.Length - 1)
{
OptionsHelp.Append(" ");
wordBuffer++;
}
}
else if (words[i].Length >= widthOfHelpText && wordBuffer == 0)
{
OptionsHelp.Append(words[i].Substring(
0,
widthOfHelpText
));
wordBuffer = widthOfHelpText;
break;
}
else
{
break;
}
}
option.HelpText = option.HelpText.Substring(Math.Min(
wordBuffer,
option.HelpText.Length
))
.Trim();
if (option.HelpText.Length <= 0) continue;
OptionsHelp.Append(Environment.NewLine);
OptionsHelp.Append(new string(' ', maxLength + 6));
} while (option.HelpText.Length > widthOfHelpText);
}
OptionsHelp.Append(option.HelpText);
OptionsHelp.Append(Environment.NewLine);
if (AdditionalNewLineAfterOption)
OptionsHelp.Append(Environment.NewLine);
}
/// <summary>
/// Initializes a new instance of the <see cref="FormatOptionHelpTextEventArgs"/> class.
/// </summary>
/// <param name="option">Option to format.</param>
public FormatOptionHelpTextEventArgs(BaseOptionAttribute option)
{
Option = option;
}