/// <summary>
/// Add one option which has long option only
/// </summary>
/// <param name="longOptName">Long option name</param>
/// <param name="optType">Option type which indicates whether this option require an argument or not</param>
/// <param name="description">Description for this option</param>
/// <param name="metavar">Name of meta variable for this option (This value is used in <see cref="showUsage()"/>)</param>
/// <param name="defaultValue">Default value of this option</param>
public void Add(string longOptName, OptionType optType, string description = null, string metavar = null, string defaultValue = null)
{
var item = new OptionItem('\0', longOptName, optType, description, metavar, defaultValue);
options.Add(item);
longOptDict[longOptName] = item;
}
/// <summary>
/// Add one option which has short option only
/// </summary>
/// <param name="shortOptName">Short option name</param>
/// <param name="optType">Option type which indicates whether this option require an argument or not</param>
/// <param name="description">Description for this option</param>
/// <param name="metavar">Name of meta variable for this option (This value is used in <see cref="showUsage()"/>)</param>
/// <param name="defaultValue">Default value of this option</param>
public void Add(char shortOptName, OptionType optType, string description = null, string metavar = null, string defaultValue = null)
{
var item = new OptionItem(shortOptName, null, optType, description, metavar, defaultValue);
options.Add(item);
shortOptDict[shortOptName] = item;
}
/// <summary>
/// Show description of a short option
/// </summary>
/// <param name="writer"><c>TextWriter</c> instance to output</param>
/// <param name="item">Option item of short option</param>
private void ShowShortOptionDescription(TextWriter writer, OptionItem item)
{
writer.Write("-" + item.ShortOptName);
if (item.OptType != OptionType.NoArgument)
{
writer.Write(" " + item.Metavar);
}
}
/// <summary>
/// Generate default help option.
/// </summary>
public void AddHelp()
{
var item = new OptionItem('h', "help", OptionType.NoArgument, "Show help and exit this program", "", StringFalse);
options.Add(item);
shortOptDict['h'] = item;
longOptDict["help"] = item;
}
/// <summary>
/// Show description of a long option
/// </summary>
/// <param name="writer"><c>TextWriter</c> instance to output</param>
/// <param name="item">Option item of long option</param>
private void ShowLongOptionDescription(TextWriter writer, OptionItem item)
{
writer.Write("--" + item.LongOptName);
switch (item.OptType)
{
case OptionType.OptionalArgument:
writer.Write("[=" + item.Metavar + "]");
break;
case OptionType.RequiredArgument:
writer.Write("=" + item.Metavar);
break;
}
}