package org.maltparser.core.options.option;
import org.maltparser.core.exception.MaltChainedException;
import org.maltparser.core.options.OptionException;
import org.maltparser.core.options.OptionGroup;
/**
* A boolean option is an option that can only contain a boolean value (true or false).
*
* @author Johan Hall
* @since 1.0
**/
public class BoolOption extends Option{
private Boolean defaultValue;
/**
* Creates a boolean option description
*
* @param group a reference to the option group.
* @param name the name of the option.
* @param shortDescription a short description of the option.
* @param flag a short string that can be used in the command line.
* @param usage a string that explains the usage of the option.
* @param defaultValue a default value string (true or false).
* @throws OptionException
*/
public BoolOption(OptionGroup group,
String name,
String shortDescription,
String flag,
String usage,
String defaultValue) throws MaltChainedException {
super(group, name, shortDescription, flag, usage);
setDefaultValue(defaultValue);
}
/* (non-Javadoc)
* @see org.maltparser.core.options.option.Option#getValueObject(java.lang.String)
*/
public Object getValueObject(String value) throws MaltChainedException {
if (value.equalsIgnoreCase("true")) {
return new Boolean(true);
} else if (value.equalsIgnoreCase("false")) {
return new Boolean(false);
} else {
throw new OptionException("Illegal boolean value '"+value+"' for the '"+getName()+"' option. ");
}
}
public Object getDefaultValueObject() throws MaltChainedException {
return new Boolean(defaultValue);
}
public void setDefaultValue(String defaultValue) throws MaltChainedException {
if (defaultValue.equalsIgnoreCase("true")) {
this.defaultValue = true;
} else if (defaultValue.equalsIgnoreCase("false")) {
this.defaultValue = false;
} else {
throw new OptionException("Illegal boolean default value '"+defaultValue+"' for the '"+getName()+"' option. ");
}
}
public String getDefaultValueString() {
return defaultValue.toString();
}
public String getStringRepresentation(Object value) {
if (value instanceof Boolean) {
return value.toString();
}
return null;
}
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append(super.toString());
sb.append("-----------------------------------------------------------------------------\n");
return sb.toString();
}
}