/*
* StringReplace.java
*
* Copyright 2008 Mark Logic Corporation.
* Portions Copyright 2007 Sun Microsystems, Inc.
* All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common
* Development and Distribution License("CDDL") (collectively, the
* "License"). You may not use this file except in compliance with the
* License. You can obtain a copy of the License at
* https://xproc.dev.java.net/public/CDDL+GPL.html or
* docs/CDDL+GPL.txt in the distribution. See the License for the
* specific language governing permissions and limitations under the
* License. When distributing the software, include this License Header
* Notice in each file and include the License file at docs/CDDL+GPL.txt.
*/
package com.xmlcalabash.library;
import java.util.Vector;
import java.util.Hashtable;
import com.xmlcalabash.core.XProcRuntime;
import com.xmlcalabash.util.ProcessMatchingNodes;
import com.xmlcalabash.util.ProcessMatch;
import com.xmlcalabash.io.ReadablePipe;
import com.xmlcalabash.io.WritablePipe;
import com.xmlcalabash.model.RuntimeValue;
import net.sf.saxon.s9api.*;
import com.xmlcalabash.runtime.XAtomicStep;
/**
*
* @author ndw
*/
public class StringReplace extends DefaultStep implements ProcessMatchingNodes {
private static final QName _match = new QName("", "match");
private static final QName _replace = new QName("", "replace");
private ReadablePipe source = null;
private WritablePipe result = null;
private ProcessMatch matcher = null;
private RuntimeValue replace = null;
private Hashtable<String,String> rns = new Hashtable<String,String> ();
private static Hashtable<QName,RuntimeValue> atomicStepsGetNoInScopeOptions = new Hashtable<QName,RuntimeValue> ();
/** Creates a new instance of StringReplace */
public StringReplace(XProcRuntime runtime, XAtomicStep step) {
super(runtime,step);
}
public void setInput(String port, ReadablePipe pipe) {
source = pipe;
}
public void setOutput(String port, WritablePipe pipe) {
result = pipe;
}
public void reset() {
source.resetReader();
result.resetWriter();
}
public void run() throws SaxonApiException {
super.run();
RuntimeValue match = getOption(_match);
replace = getOption(_replace);
for (String prefix : replace.getNamespaceBindings().keySet()) {
rns.put(prefix, replace.getNamespaceBindings().get(prefix));
}
matcher = new ProcessMatch(runtime, this);
matcher.match(source.read(), match);
result.write(matcher.getResult());
}
public boolean processStartDocument(XdmNode node) throws SaxonApiException {
return true;
}
public void processEndDocument(XdmNode node) throws SaxonApiException {
// nop?
}
public boolean processStartElement(XdmNode node) throws SaxonApiException {
String newValue = computeReplacement(node);
matcher.addText(newValue);
return false;
}
public void processEndElement(XdmNode node) throws SaxonApiException {
// nop?
}
public void processText(XdmNode node) throws SaxonApiException {
String newValue = computeReplacement(node);
matcher.addText(newValue);
}
public void processComment(XdmNode node) throws SaxonApiException {
String newValue = computeReplacement(node);
matcher.addText(newValue);
}
public void processPI(XdmNode node) throws SaxonApiException {
String newValue = computeReplacement(node);
matcher.addText(newValue);
}
public void processAttribute(XdmNode node) throws SaxonApiException {
String newValue = computeReplacement(node);
matcher.addAttribute(node, newValue);
}
private String computeReplacement(XdmNode node) {
Vector<XdmItem> values = evaluateXPath(node, rns, replace.getString(), atomicStepsGetNoInScopeOptions);
String newValue = "";
for (XdmItem item : values) {
newValue += item.getStringValue();
}
return newValue;
}
}