/*
* Copyright 2011-2012 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.shell.converters;
import java.util.List;
import org.springframework.shell.core.Completion;
import org.springframework.shell.core.Converter;
import org.springframework.shell.core.MethodTarget;
import org.springframework.stereotype.Component;
/**
* {@link Converter} for {@link Boolean}.
*
* @author Stefan Schmidt
* @since 1.0
*/
@Component
public class BooleanConverter implements Converter<Boolean> {
@Override
public Boolean convertFromText(final String value, final Class<?> requiredType, final String optionContext) {
if ("true".equalsIgnoreCase(value) || "1".equals(value) || "yes".equalsIgnoreCase(value)) {
return true;
}
else if ("false".equalsIgnoreCase(value) || "0".equals(value) || "no".equalsIgnoreCase(value)) {
return false;
}
else {
throw new IllegalArgumentException("Cannot convert " + value + " to type Boolean.");
}
}
@Override
public boolean getAllPossibleValues(final List<Completion> completions, final Class<?> requiredType,
final String existingData, final String optionContext, final MethodTarget target) {
completions.add(new Completion("true"));
completions.add(new Completion("false"));
completions.add(new Completion("yes"));
completions.add(new Completion("no"));
completions.add(new Completion("1"));
completions.add(new Completion("0"));
return false;
}
@Override
public boolean supports(final Class<?> requiredType, final String optionContext) {
return Boolean.class.isAssignableFrom(requiredType) || boolean.class.isAssignableFrom(requiredType);
}
}