Beispiel #1
0
        protected static CommandLineConfig Parse(params String[] args)
        {
            var frames = new StackTrace().GetFrames().Select(f =>
            {
                var m = f.GetMethod();
                var decl = m.DeclaringType;
                while (decl != null && decl.IsCompilerGenerated()) decl = decl.DeclaringType;
                return decl;
            }).ToReadOnly();
            frames = frames.SkipWhile(decl => decl == null || decl == typeof(CommandLineConfig)).ToReadOnly();
            frames = frames.SkipWhile(decl => decl == null || decl == typeof(Func)).ToReadOnly();
            frames = frames.SkipWhile(decl => decl == null || decl == typeof(CommandLineConfig)).ToReadOnly();
            var t = frames.AssertFirst(decl => decl != null && decl != typeof(CommandLineConfig));

            try
            {
                var ctor = t.GetConstructors(BF.All).Single(ci => ci.Params().SingleOrDefault2() == typeof(String[]));
                return (CommandLineConfig)ctor.Invoke(args.MkArray());
            }
            catch (TargetInvocationException tie)
            {
                var cex = tie.InnerException as ConfigException;
                if (cex != null)
                {
                    var error = Logger.Get(t).Error;
                    if (cex.Message != null)
                    {
                        if (args.Last() != "/verbose")
                        {
                            var asm_name = t.Assembly.GetName().Name;
                            var cfg_name = t.Attr<ConfigAttribute>().Name;
                            error.WriteLine("Command line was: {0} {1}", cfg_name ?? asm_name, args.StringJoin(" "));
                        }

                        error.WriteLine(cex.Message);
                    }

                    error.EnsureBlankLine();
                    Banners.Help();
                    return null;
                }
                else
                {
                    throw;
                }
            }
        }