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package bjc.utils.cli;
/**
* Generic command implementation.
*
* @author ben
*/
public class GenericCommand implements Command {
/* The behavior for invoking the command. */
private final CommandHandler handler;
/* The help for the command. */
private CommandHelp help;
/**
* Create a new generic command.
*
* @param handler
* The handler to use for the command.
*
* @param description
* The description of the command. May be null, in which case a
* default is provided.
*
* @param help
* The detailed help message for the command. May be null, in
* which case the description is repeated for the detailed help.
*/
public GenericCommand(final CommandHandler handler, final String description, final String help) {
if(handler == null) throw new NullPointerException("Command handler must not be null");
this.handler = handler;
if(description == null) {
this.help = new NullHelp();
} else {
this.help = new GenericHelp(description, help);
}
}
@Override
public Command aliased() {
return new DelegatingCommand(this);
}
@Override
public CommandHandler getHandler() {
return handler;
}
@Override
public CommandHelp getHelp() {
return help;
}
@Override
public boolean isAlias() {
return false;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return String.format("GenericCommand [help=%s]", help);
}
}
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