package org.kohsuke.args4j.spi;
import java.util.Arrays;
import java.util.List;
import org.kohsuke.args4j.OptionDef;
import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.CmdLineParser;
/**
* Boolean {@link OptionHandler}.
*
* @author Kohsuke Kawaguchi
*/
public class BooleanOptionHandler extends OptionHandler<Boolean> {
private static final List<String> ACCEPTABLE_VALUES = Arrays.asList(new String[] { "true", "on", "yes", "1",
"false", "off", "no", "0" });
public BooleanOptionHandler(CmdLineParser parser, OptionDef option, Setter<? super Boolean> setter) {
super(parser, option, setter);
}
@Override
public int parseArguments(Parameters params) throws CmdLineException {
if (option.isArgument()) {
String valueStr = params.getParameter(0).toLowerCase();
int index = ACCEPTABLE_VALUES.indexOf(valueStr);
if (index == -1) {
throw new CmdLineException(Messages.ILLEGAL_BOOLEAN.format(valueStr));
}
setter.addValue(index < ACCEPTABLE_VALUES.size() / 2);
return 1;
} else {
setter.addValue(true);
return 0;
}
}
@Override
public String getDefaultMetaVariable() {
return null;
}
}