/*
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* Copyright 2011 gitblit.com.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.gitblit.utils;
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import java.io.Serializable;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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/**
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* Utility class to convert Strings into Collections and vice versa.
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*
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* @author saheba
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*
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*/
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public class MultiConfigUtil implements Serializable {
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private static final long serialVersionUID = 1324076956473037856L;
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public static final String OPTION_SEPARATOR = ";";
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/**
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* converts a collection of strings into a single line string by concatenating them and separating the different elements with the OPTION_SEPARATOR
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*
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* @param collection of strings
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*
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* @return
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*/
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public String convertCollectionToSingleLineString(Collection<String> collection) {
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String result = "";
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for (String string : collection) {
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if (!result.equals("")) {
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result += OPTION_SEPARATOR;
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}
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result += string;
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}
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return result;
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}
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/**
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* converts a collection of strings into a list of strings
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*
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* @param collection
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*
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* @return
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*/
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public List<String> convertCollectionToList(Collection<String> collection) {
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List<String> result = new ArrayList<String>();
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for (String string : collection) {
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result.add(string);
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}
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return result;
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}
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/**
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* converts a single line string into a set of strings by splitting the given string with the OPTION_SEPARATOR
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*
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* @param string which contains one or more options concatenated with the OPTION_SEPARATOR
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*
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* @return
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*/
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public Set<String> convertStringToSet(String string) {
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Set<String> result = new HashSet<String>();
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if (string != null && string.trim().length() > 0) {
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String[] splitted = string.split(OPTION_SEPARATOR);
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for (int i = 0; i < splitted.length; i++) {
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String possible = splitted[i].trim();
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if (possible.length() > 0) {
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result.add(possible);
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}
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}
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}
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return result;
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}
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}
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