/**
* Copyright 2011-2012 Alexandre Dutra
*
* 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 fr.dutra.confluence2wordpress.util;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.lang.StringUtils;
import com.google.common.base.Joiner;
import com.google.common.base.Splitter;
/**
* @author Alexandre Dutra
*/
public class CollectionUtils {
public static List<String> split(String str, String sep) {
if (StringUtils.isBlank(str)) {
return null;
}
Splitter splitter = Splitter.on(sep).trimResults().omitEmptyStrings();
List<String> list = new ArrayList<String>();
for (String token : splitter.split(str)) {
list.add(token);
}
if(list.isEmpty()){
return null;
}
return list;
}
/**
* @param tagNames
* @param sep
* @return
*/
public static String join(List<String> tagNames, String sep) {
if (tagNames == null || tagNames.isEmpty()) {
return null;
}
return Joiner.on(sep).join(tagNames);
}
}