Re: [JGIT PATCH 17/28] Support automatic command line parsing for TextBuiltin subclasses

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Hi Shawn

to use args4j was really a great idea. I had a patch, implementing
something similar to args4j in my repository, but using a library is
always better. *thumb up*


I had a short look at the files and noticed that the inner "if (help) {"
is unnecessary:

+		if (help) {
+			System.err.print("jgit ");
+			System.err.print(commandName);
+			clp.printSingleLineUsage(System.err);
+			System.err.println();
+
+			if (help) {
+				System.err.println();
+				clp.printUsage(System.err);
+				System.err.println();
+			}
+			System.exit(1);
+		}

Also a cool function which you may want to use is:

public <U> Class<? extends U> asSubclass(Class<U> clazz)

With that method of Class<?> you can do the cast before you actually
create the object.
You could for example make use of them in SubcommandHandler:
l. 124			cmd = (TextBuiltin) cons.newInstance();

Best regards,
Florian Köberle

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