internal static OptionSet CreateOptionsFor(ConsoleArgsContext context)
{
// https://github.com/mono/mono/blob/main/mcs/class/Mono.Options/Mono.Options/Options.cs
// '=' value is required, `:` value is optional
return(new OptionSet
{
{ "help|h", "Display this help screen.", TrySet(_ => context.IsHelp = true) },
{ "verbose|v", "Use verbose log messages", TrySet(_ => context.IsVerbose = true) },
{ "vs=", "Specify the version of Visual Studio used to launch.", TrySet(x => context.VsVersion = x) },
{ "slnf:|f:", "Include .slnf in the launch options. Optionally, you can also specify a filter for both sln or slnf.", TrySet(x => { context.IncludeSlnf = true; context.Filter = x; }) },
});
Action <string> TrySet(Action <string> set)
{
return(value =>
{
if (context != null)
{
try
{
set(value);
}
catch (Exception e)
{
context.Errors.Add(new ConsoleArgError(value, ConsoleArgErrorType.ValueAssignmentError, e));
}
}
});
}
Action <string> TryParseAndSet <T>(Func <string, T> parse, Action <T> set)
{
return(value =>
{
if (context != null)
{
var isParsing = true;
try
{
var parsed = parse(value);
isParsing = false;
set(parsed);
}
catch (Exception e)
{
context.Errors.Add(new ConsoleArgError(
value,
isParsing ? ConsoleArgErrorType.ValueParsingError : ConsoleArgErrorType.ValueAssignmentError,
e
));
}
}
});
}
}
public static ConsoleArgsContext Parse(string[] args)
{
var context = new ConsoleArgsContext();
if (args.Length > 0)
{
var unparsed = new Stack <string>(CreateOptionsFor(context).Parse(args) ?? Enumerable.Empty <string>());
if (unparsed.TryPop(out var unparsed0))
{
context.Path = unparsed0;
foreach (var item in unparsed)
{
context.Errors.Add(new ConsoleArgError(item, ConsoleArgErrorType.UnrecognizedArgument));
}
}
}
return(context);
}