CommandIterator

Motivation

Checking argument indexes in a string array is too messy and makes sub-commands coupled to their location.

The Solution

CommandIterator lets you forget about indexes but you can keep an imperative style of commands. Instead of checking indexes, you use hasNext, and instead of accessing indexes, you use next. It works like an Iterator<String>.

Example

CommandIterator command = new ArrayCommandIterator("arg1", "arg2");
if (!command.hasNext()) {
  sender.sendMessage("Usage");
  return;
}
String firstArgument = command.next(); // Will be "arg1"

if (!command.hasNext()) {
  sender.sendMessage("Specify next argument");
  return;
}
String secondArgument = command.next(); // Will be "arg2"

The call to next() consumes the argument. To view the argument without consuming it, you can use peek().

License

LGPL v3. See the license file for more info.