/**
* Copyright (C) 2010-2017 Structr GmbH
*
* This file is part of Structr <http://structr.org>.
*
* Structr is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Structr is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.core.function;
import org.structr.common.error.FrameworkException;
import org.structr.schema.action.ActionContext;
import org.structr.schema.action.Function;
/**
*
*/
public class ModFunction extends Function<Object, Object> {
public static final String ERROR_MESSAGE_MODULO = "Usage: ${mod(value1, value2)}. Example: ${mod(17, 5)}";
@Override
public String getName() {
return "mod()";
}
@Override
public Object apply(final ActionContext ctx, final Object caller, final Object[] sources) throws FrameworkException {
try {
if (arrayHasLengthAndAllElementsNotNull(sources, 2)) {
try {
return ((int)Double.parseDouble(sources[0].toString())) % ((int)Double.parseDouble(sources[1].toString()));
} catch (NumberFormatException nfe) {
logException(caller, nfe, sources);
return nfe.getMessage();
}
}
} catch (final IllegalArgumentException e) {
logParameterError(caller, sources, ctx.isJavaScriptContext());
return usage(ctx.isJavaScriptContext());
}
return null;
}
@Override
public String usage(boolean inJavaScriptContext) {
return ERROR_MESSAGE_MODULO;
}
@Override
public String shortDescription() {
return "Returns the remainder of the division";
}
}