| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999-2003 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.xpath.functions; |
| |
| //import org.w3c.dom.Node; |
| |
| import java.util.Vector; |
| |
| import org.apache.xpath.XPathContext; |
| import org.apache.xpath.XPath; |
| import org.apache.xpath.objects.XObject; |
| import org.apache.xpath.res.XPATHErrorResources; |
| import org.apache.xpath.objects.XString; |
| |
| /** |
| * <meta name="usage" content="advanced"/> |
| * Execute the Translate() function. |
| */ |
| public class FuncTranslate extends Function3Args |
| { |
| |
| /** |
| * Execute the function. The function must return |
| * a valid object. |
| * @param xctxt The current execution context. |
| * @return A valid XObject. |
| * |
| * @throws javax.xml.transform.TransformerException |
| */ |
| public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException |
| { |
| |
| String theFirstString = m_arg0.execute(xctxt).str(); |
| String theSecondString = m_arg1.execute(xctxt).str(); |
| String theThirdString = m_arg2.execute(xctxt).str(); |
| int theFirstStringLength = theFirstString.length(); |
| int theThirdStringLength = theThirdString.length(); |
| |
| // A vector to contain the new characters. We'll use it to construct |
| // the result string. |
| StringBuffer sbuffer = new StringBuffer(); |
| |
| for (int i = 0; i < theFirstStringLength; i++) |
| { |
| char theCurrentChar = theFirstString.charAt(i); |
| int theIndex = theSecondString.indexOf(theCurrentChar); |
| |
| if (theIndex < 0) |
| { |
| |
| // Didn't find the character in the second string, so it |
| // is not translated. |
| sbuffer.append(theCurrentChar); |
| } |
| else if (theIndex < theThirdStringLength) |
| { |
| |
| // OK, there's a corresponding character in the |
| // third string, so do the translation... |
| sbuffer.append(theThirdString.charAt(theIndex)); |
| } |
| else |
| { |
| |
| // There's no corresponding character in the |
| // third string, since it's shorter than the |
| // second string. In this case, the character |
| // is removed from the output string, so don't |
| // do anything. |
| } |
| } |
| |
| return new XString(sbuffer.toString()); |
| } |
| } |