2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with the com.oreilly.servlet library, any library
22 * licensed under the Apache Software License, The Sun (tm) Java Advanced
23 * Imaging library (JAI), The Sun JIMI library (or with modified versions of
24 * the above that use the same license as the above), and distribute linked
25 * combinations including the two. You must obey the GNU General Public
26 * License in all respects for all of the code used other than the above
27 * mentioned libraries. If you modify this file, you may extend this exception
28 * to your version of the file, but you are not obligated to do so. If you do
29 * not wish to do so, delete this exception statement from your version.
35 import gnu.regexp.REException;
37 import java.util.List;
38 import java.util.Vector;
40 public class StringRoutines {
42 private StringRoutines() {
45 static int indexOfCharacters(String aString, char[] aCharacters, int aFrom) {
50 for (i=0; i<aCharacters.length ; i++) {
51 position = aString.indexOf(aCharacters[i], aFrom);
53 if (position != -1 && ( result == -1 || position < result )) {
61 static String replaceStringCharacters(String aText, char[] aCharactersToReplace, String[] aStringsToSubstitute) {
65 int position, nextPosition;
67 StringBuffer result = new StringBuffer();
71 nextPosition = StringRoutines.indexOfCharacters(aText, aCharactersToReplace, position);
74 nextPosition = aText.length();
76 result.append(aText.substring(position, nextPosition));
78 if (nextPosition<aText.length())
79 for (i=0; i<aCharactersToReplace.length; i++) {
80 if (aCharactersToReplace[i] == aText.charAt(nextPosition)) {
81 result.append(aStringsToSubstitute[i]);
85 position=nextPosition+1;
87 while (nextPosition<aText.length()) ;
89 return result.toString();
93 public static String interpretAsString(Object aValue) throws Exception {
94 if (aValue instanceof String)
95 return (String) aValue;
97 if (aValue instanceof Integer)
98 return ((Integer) aValue).toString();
103 throw new Exception("String expected, "+aValue+" found");
106 public static int interpretAsInteger(Object aValue) throws Exception {
107 if (aValue instanceof Integer)
108 return ((Integer) aValue).intValue();
110 if (aValue instanceof String)
112 return Integer.parseInt((String) aValue);
114 catch (Throwable t) {
115 throw new Exception("Integer expected, "+aValue+" found");
118 throw new Exception("Integer expected, "+aValue+" found");
124 * @param aSearchExpression
125 * @param aReplacement
129 public static String performRegularExpressionReplacement(String aSource,
130 String aSearchExpression, String aReplacement) throws Exception {
132 RE regularExpression;
134 regularExpression = new RE(aSearchExpression);
136 return regularExpression.substituteAll(aSource, aReplacement);
142 * @param aSearchExpression
144 * @throws REException
146 public static boolean performRegularExpressionSearch(String aSource,
147 String aSearchExpression) throws REException {
148 RE regularExpression;
150 regularExpression = new RE(aSearchExpression);
152 return regularExpression.isMatch(aSource);
156 * Separates a string based on a separator:
157 * <code>seperateString("a:b:c", ":");</code> will lead to
158 * a List with 3 Strings: <code>"a"</code>, <code>"b"</code> and <code>"c"</code>
160 * @param aString The string to split
165 public static List splitString(String aString, String aSeparator) {
166 List result= new Vector();
167 int previousPosition = 0;
169 int endOfNamePosition;
171 while ((position = aString.indexOf(aSeparator, previousPosition))>=0) {
172 result.add(aString.substring(previousPosition, position));
173 previousPosition = position + aSeparator.length();
176 result.add(aString.substring(previousPosition, aString.length()));
182 * Separates a String into at most 2 parts based on a separator:
185 * <code>seperateString("a:b:c", ":");</code> will lead to
186 * a List with 2 Strings: <code>"a"</code> and <code>"b:c"</code>
188 * <code>seperateString("abc", ":");</code> will lead to
189 * a List with a single String: <code>"abc"</code>
197 public static List separateString(String aString, String aSeparator) {
198 List result= new Vector();
199 int previousPosition = 0;
201 int endOfNamePosition;
203 if((position = aString.indexOf(aSeparator, previousPosition))>=0) {
204 result.add(aString.substring(previousPosition, position));
205 previousPosition = position + aSeparator.length();
208 result.add(aString.substring(previousPosition, aString.length()));