public static void Parse(IEnumerable<string> arguments, Action<CommandLineSyntax> syntaxAction)
{
if (arguments == null)
throw new ArgumentNullException("arguments");
if (syntaxAction == null)
throw new ArgumentNullException("syntaxAction");
var syntax = new CommandLineSyntax(arguments);
var showHelp = false;
try
{
syntax.DefineQualifier("?|help", ref showHelp, "Shows this help page");
syntaxAction(syntax);
}
catch (CommandLineSyntaxException ex)
{
ShowErrorAndExit(ex, -1);
}
if (showHelp)
ShowHelpAndExit(syntax, 0);
try
{
syntax.Validate();
}
catch (CommandLineSyntaxException ex)
{
ShowError(ex);
ShowHelpAndExit(syntax, -1);
}
}
public void ParsesArrayParameters()
{
var commandLine = "source1.cs source2.cs";
var syntax = new CommandLineSyntax(commandLine);
var sources = new string[0];
syntax.DefineParameter("sources", ref sources, string.Empty);
syntax.Validate();
var expected = new[] { "source1.cs", "source2.cs" };
var actual = sources;
Assert.Equal(expected, actual);
}
public void DetectsNonExistingQualifier()
{
var commandLine = "-e -d";
var exception = Assert.Throws<CommandLineSyntaxException>(() =>
{
var syntax = new CommandLineSyntax(commandLine);
var exists = false;
syntax.DefineQualifier("e|exists", ref exists, "Some qualifier");
syntax.Validate();
});
Assert.Equal("invalid qualifier -d", exception.Message);
}
public void DetectsDuplicateQualifiers()
{
var commandLine = "-a -b -a";
var exception = Assert.Throws<CommandLineSyntaxException>(() =>
{
var syntax = new CommandLineSyntax(commandLine);
var arg1 = false;
var arg2 = false;
syntax.DefineQualifier("a|arg1", ref arg1, string.Empty);
syntax.DefineQualifier("b|arg2", ref arg2, string.Empty);
syntax.Validate();
});
Assert.Equal("qualifier a|arg1 is specified multiple times", exception.Message);
}
public void ParsesArrayQualifiers()
{
var commandLine = "-a x -b -a y";
var syntax = new CommandLineSyntax(commandLine);
var arg1 = new string[0];
var arg2 = false;
syntax.DefineQualifier("a|arg 1", ref arg1, string.Empty);
syntax.DefineQualifier("b|arg 2", ref arg2, string.Empty);
syntax.Validate();
var expected1 = new[] { "x", "y" };
var actual1 = arg1;
Assert.Equal(expected1, actual1);
var expected2 = true;
var actual2 = arg2;
Assert.Equal(expected2, actual2);
}
private static void ShowHelpAndExit(CommandLineSyntax syntax, int exitCode)
{
var processPath = Environment.GetCommandLineArgs()[0];
var processName = Path.GetFileNameWithoutExtension(processPath);
var processNameLowerCased = processName.ToLowerInvariant();
var helpText = syntax.GetHelpText(processNameLowerCased, Console.WindowWidth - 2);
Console.WriteLine(helpText);
Environment.Exit(exitCode);
}
