Interface CommandLine.IExitCodeExceptionMapper

Interface that provides the appropriate exit code that will be returned from the execute method for an exception that occurred during parsing or while invoking the command's Runnable, Callable, or Method.

Example usage:

 @Command
 class FailingCommand implements Callable<Void> {
     public Void call() throws IOException {
         throw new IOException("error");
     }
 }
 IExitCodeExceptionMapper mapper = new IExitCodeExceptionMapper() {
     public int getExitCode(Throwable t) {
         if (t instanceof IOException && "error".equals(t.getMessage())) {
             return 123;
         }
         return 987;
     }
 }

 CommandLine cmd = new CommandLine(new FailingCommand());
 cmd.setExitCodeExceptionMapper(mapper);
 int exitCode = cmd.execute(args);
 assert exitCode == 123;
 System.exit(exitCode);