private void AssertTextSplit(string text, int splitAt, string expectedBefore, string expectedAfter)
{
string before;
string after;
MonospaceTextFormat.SplitTextOnSeparator(text, out before, out after, splitAt, new char[] { ' ' });
Assert.That(before, Is.EqualTo(expectedBefore));
Assert.That(after, Is.EqualTo(expectedAfter));
}
public void TestAppendIndentedText()
{
string label = "this is the label ";
string description = "the quick brown fox jumps over the lazy dog. THE (VERY QUICK) FOX JUMPS OVER THE LAZY DOG.";
StringBuilder sb = new StringBuilder(label);
MonospaceTextFormat.AppendIndentedText(sb, label.Length, 30, description);
string expectedText =
"this is the label the quick"
+ "\n brown fox"
+ "\n jumps over"
+ "\n the lazy"
+ "\n dog. THE"
+ "\n (VERY"
+ "\n QUICK) FOX"
+ "\n JUMPS OVER"
+ "\n THE LAZY"
+ "\n DOG.";
Assert.That(sb.ToString(), Is.EqualTo(expectedText));
}
/// <summary>
/// Returns a string containing the syntax description of the arguments contained in <see cref="Arguments"/>.
/// </summary>
/// <param name="commandName">The file name of the program.</param>
/// <param name="maxWidth">The maximum line length (for screen output, use 79 for 80 character output to avoid blank lines).</param>
/// <returns>A syntax overview containing a short command line overview and a table of parameters and desciptions.</returns>
public string GetAsciiSynopsis(string commandName, int maxWidth)
{
StringBuilder sb = new StringBuilder(2048);
sb.Append(commandName);
int maxLength = 0;
int openSquareBrackets = 0;
for (int i = 0; i < Arguments.Count; ++i)
{
CommandLineArgument argument = Arguments[i];
CommandLineArgument nextArgument = ((i + 1) < Arguments.Count) ? Arguments[i + 1] : null;
if (!(argument is ICommandLinePartArgument))
{
// append opening square bracket
sb.Append(" ");
if (argument.IsOptional)
{
sb.Append("[");
++openSquareBrackets;
}
argument.AppendSynopsis(sb);
// append closing square brackets after last optional argument
if (nextArgument == null ||
!nextArgument.IsOptional ||
!nextArgument.IsPositional)
{
for (int k = 0; k < openSquareBrackets; ++k)
{
sb.Append("]");
}
openSquareBrackets = 0;
}
}
if (!(argument is CommandLineGroupArgument))
{
if (argument.Name != null)
{
maxLength = Math.Max(maxLength, argument.Name.Length + 1);
}
else if (argument.Placeholder != null)
{
maxLength = Math.Max(maxLength, argument.Placeholder.Length);
}
}
}
// insert word breaks
string synopsis = sb.ToString();
sb.Length = 0;
MonospaceTextFormat.AppendWrappedText(sb, maxWidth, synopsis);
// create parameter name/description table
sb.Append("\n");
foreach (CommandLineArgument argument in Arguments)
{
if (!(argument is CommandLineGroupArgument))
{
string name = argument.Placeholder;
if (argument.Name != null)
{
name = _argumentDeclarationPrefix + argument.Name;
}
sb.AppendFormat("\n {0,-" + maxLength.ToString() + "} ", name);
MonospaceTextFormat.AppendIndentedText(sb, maxLength + 4, maxWidth, argument.Description);
}
}
return(sb.ToString());
}