001/* 002 * (C) Copyright 2006-2010 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bstefanescu 018 */ 019package org.nuxeo.shell.utils; 020 021import java.util.ArrayList; 022import java.util.List; 023 024/** 025 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> 026 */ 027public class StringUtils { 028 029 public static String join(String[] ar, String delim) { 030 if (ar == null || ar.length == 0) { 031 return ""; 032 } 033 if (ar.length == 1) { 034 return ar[0]; 035 } 036 StringBuilder buf = new StringBuilder(); 037 buf.append(ar[0]); 038 for (int i = 1; i < ar.length; i++) { 039 buf.append(delim).append(ar[i]); 040 } 041 return buf.toString(); 042 } 043 044 public static String join(List<String> ar, String delim) { 045 return join(ar.toArray(new String[ar.size()]), delim); 046 } 047 048 public static String[] split(String str, char delimiter, boolean trim) { 049 int s = 0; 050 int e = str.indexOf(delimiter, s); 051 if (e == -1) { 052 if (trim) { 053 str = str.trim(); 054 } 055 return new String[] { str }; 056 } 057 List<String> ar = new ArrayList<String>(); 058 do { 059 String segment = str.substring(s, e); 060 if (trim) { 061 segment = segment.trim(); 062 } 063 ar.add(segment); 064 s = e + 1; 065 e = str.indexOf(delimiter, s); 066 } while (e != -1); 067 068 int len = str.length(); 069 if (s < len) { 070 String segment = str.substring(s); 071 if (trim) { 072 segment = segment.trim(); 073 } 074 ar.add(segment); 075 } else { 076 ar.add(""); 077 } 078 079 return ar.toArray(new String[ar.size()]); 080 } 081 082}