FuncTranslate.java revision 286
0N/A/*
2362N/A * reserved comment block
0N/A * DO NOT REMOVE OR ALTER!
0N/A */
0N/A/*
0N/A * Copyright 1999-2004 The Apache Software Foundation.
0N/A *
0N/A * Licensed under the Apache License, Version 2.0 (the "License");
0N/A * you may not use this file except in compliance with the License.
0N/A * You may obtain a copy of the License at
0N/A *
0N/A * http://www.apache.org/licenses/LICENSE-2.0
0N/A *
0N/A * Unless required by applicable law or agreed to in writing, software
0N/A * distributed under the License is distributed on an "AS IS" BASIS,
0N/A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0N/A * See the License for the specific language governing permissions and
0N/A * limitations under the License.
2362N/A */
2362N/A/*
2362N/A * $Id: FuncTranslate.java,v 1.2.4.1 2005/09/14 20:18:45 jeffsuttor Exp $
0N/A */
0N/Apackage com.sun.org.apache.xpath.internal.functions;
0N/A
0N/Aimport com.sun.org.apache.xpath.internal.XPathContext;
0N/Aimport com.sun.org.apache.xpath.internal.objects.XObject;
0N/Aimport com.sun.org.apache.xpath.internal.objects.XString;
0N/A
0N/A/**
0N/A * Execute the Translate() function.
0N/A * @xsl.usage advanced
0N/A */
0N/Apublic class FuncTranslate extends Function3Args
0N/A{
0N/A static final long serialVersionUID = -1672834340026116482L;
0N/A
0N/A /**
0N/A * Execute the function. The function must return
0N/A * a valid object.
0N/A * @param xctxt The current execution context.
0N/A * @return A valid XObject.
0N/A *
0N/A * @throws javax.xml.transform.TransformerException
0N/A */
0N/A public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException
0N/A {
0N/A
0N/A String theFirstString = m_arg0.execute(xctxt).str();
0N/A String theSecondString = m_arg1.execute(xctxt).str();
0N/A 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());
}
}