001/*
002 * (C) Copyright 2006-2010 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     bstefanescu
016 */
017package org.nuxeo.shell.utils;
018
019import java.util.ArrayList;
020import java.util.List;
021
022/**
023 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
024 */
025public class StringUtils {
026
027    public static String join(String[] ar, String delim) {
028        if (ar == null || ar.length == 0) {
029            return "";
030        }
031        if (ar.length == 1) {
032            return ar[0];
033        }
034        StringBuilder buf = new StringBuilder();
035        buf.append(ar[0]);
036        for (int i = 1; i < ar.length; i++) {
037            buf.append(delim).append(ar[i]);
038        }
039        return buf.toString();
040    }
041
042    public static String join(List<String> ar, String delim) {
043        return join(ar.toArray(new String[ar.size()]), delim);
044    }
045
046    public static String[] split(String str, char delimiter, boolean trim) {
047        int s = 0;
048        int e = str.indexOf(delimiter, s);
049        if (e == -1) {
050            if (trim) {
051                str = str.trim();
052            }
053            return new String[] { str };
054        }
055        List<String> ar = new ArrayList<String>();
056        do {
057            String segment = str.substring(s, e);
058            if (trim) {
059                segment = segment.trim();
060            }
061            ar.add(segment);
062            s = e + 1;
063            e = str.indexOf(delimiter, s);
064        } while (e != -1);
065
066        int len = str.length();
067        if (s < len) {
068            String segment = str.substring(s);
069            if (trim) {
070                segment = segment.trim();
071            }
072            ar.add(segment);
073        } else {
074            ar.add("");
075        }
076
077        return ar.toArray(new String[ar.size()]);
078    }
079
080}