/*******************************************************************************
* Copyright (c) 2000, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.help.internal.base.util;
/**
* This class provides static methods for some of the very used String
* operations
*/
public class TString {
// change all occurrences of oldPat to newPat
public static String change(String in, String oldPat, String newPat) {
if (oldPat.length() == 0)
return in;
if (oldPat.length() == 1 && newPat.length() == 1)
return in.replace(oldPat.charAt(0), newPat.charAt(0));
if (in.indexOf(oldPat) < 0)
return in;
int lastIndex = 0;
int newIndex = 0;
StringBuffer newString = new StringBuffer();
for (;;) {
newIndex = in.indexOf(oldPat, lastIndex);
if (newIndex != -1) {
newString.append(in.substring(lastIndex, newIndex) + newPat);
lastIndex = newIndex + oldPat.length();
} else {
newString.append(in.substring(lastIndex));
break;
}
}
return newString.toString();
}
}