package net.fortytwo.ripple.libs.string;
import net.fortytwo.flow.Sink;
import net.fortytwo.ripple.RippleException;
import net.fortytwo.ripple.model.ModelConnection;
import net.fortytwo.ripple.model.PrimitiveStackMapping;
import net.fortytwo.ripple.model.RDFValue;
import net.fortytwo.ripple.model.RippleList;
/**
* A primitive which tells whether a string contains another string as a
* substring.
*
* @author Joshua Shinavier (http://fortytwo.net)
*/
public class Contains extends PrimitiveStackMapping {
private static final String[] IDENTIFIERS = {
StringLibrary.NS_2013_03 + "contains",
StringLibrary.NS_2008_08 + "contains"};
public String[] getIdentifiers() {
return IDENTIFIERS;
}
public Contains() throws RippleException {
super();
}
public Parameter[] getParameters() {
return new Parameter[]{
new Parameter("s1", null, true),
new Parameter("s2", null, true)};
}
public String getComment() {
return "s1 s2 => b -- where b is true/false if s1 contains s2 as a substring";
}
public void apply(final RippleList arg,
final Sink<RippleList> solutions,
final ModelConnection mc) throws RippleException {
RippleList stack = arg;
String b = mc.toString(stack.getFirst());
stack = stack.getRest();
String a = mc.toString(stack.getFirst());
stack = stack.getRest();
RDFValue result = mc.valueOf(a.contains(b));
solutions.put(
stack.push(result));
}
}