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diff --git a/org.simantics.xml.sax.base/src/org/simantics/xml/sax/base/IndentingXMLStreamWriter.java b/org.simantics.xml.sax.base/src/org/simantics/xml/sax/base/IndentingXMLStreamWriter.java
new file mode 100644
index 0000000..a912564
--- /dev/null
+++ b/org.simantics.xml.sax.base/src/org/simantics/xml/sax/base/IndentingXMLStreamWriter.java
@@ -0,0 +1,208 @@
+package org.simantics.xml.sax.base;
+
+import javax.xml.namespace.NamespaceContext;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamWriter;
+
+/**
+ * Rather dummy indenting XML Stream Writer.
+ * 
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
+ *
+ */
+public class IndentingXMLStreamWriter implements XMLStreamWriter{
+	
+	XMLStreamWriter delegate;
+	int depth = 0;
+	
+	public IndentingXMLStreamWriter(XMLStreamWriter delegate) {
+		this.delegate = delegate;
+	}
+	
+	@Override
+	public void close() throws XMLStreamException {
+		delegate.close();
+	}
+	
+	@Override
+	public void flush() throws XMLStreamException {
+		delegate.close();
+	}
+	
+	@Override
+	public NamespaceContext getNamespaceContext() {
+		return delegate.getNamespaceContext();
+	}
+	
+	@Override
+	public String getPrefix(String uri) throws XMLStreamException {
+		return delegate.getPrefix(uri);
+	}
+	
+	@Override
+	public Object getProperty(String name) throws IllegalArgumentException {
+		return delegate.getProperty(name);
+	}
+	
+	@Override
+	public void setDefaultNamespace(String uri) throws XMLStreamException {
+		delegate.setDefaultNamespace(uri);
+	}
+	
+	@Override
+	public void setPrefix(String prefix, String uri) throws XMLStreamException {
+		delegate.setPrefix(prefix, uri);
+	}
+	
+	private String getIdent() {
+		String s = "";
+		for (int i = 0; i < depth; i++)
+			s += "  ";
+		return s;
+	}
+
+	@Override
+	public void writeStartElement(String localName) throws XMLStreamException {
+		delegate.writeCharacters("\n"+getIdent());
+		delegate.writeStartElement(localName);
+		depth++;
+	}
+
+	@Override
+	public void writeStartElement(String namespaceURI, String localName) throws XMLStreamException {
+		delegate.writeCharacters("\n"+getIdent());
+		delegate.writeStartElement(namespaceURI, localName);
+		depth++;
+	}
+
+	@Override
+	public void writeStartElement(String prefix, String localName, String namespaceURI) throws XMLStreamException {
+		delegate.writeCharacters("\n"+getIdent());
+		delegate.writeStartElement(prefix, localName, namespaceURI);
+		depth++;
+	}
+
+	@Override
+	public void writeStartDocument() throws XMLStreamException {
+		delegate.writeStartDocument();
+		depth++;
+	}
+
+	@Override
+	public void writeStartDocument(String version) throws XMLStreamException {
+		delegate.writeStartDocument(version);
+		depth++;
+	}
+
+	@Override
+	public void writeStartDocument(String encoding, String version) throws XMLStreamException {
+		delegate.writeStartDocument(encoding, version);
+		depth++;
+	}
+
+	@Override
+	public void writeEndElement() throws XMLStreamException {
+		depth--;
+		delegate.writeCharacters("\n"+getIdent());
+		delegate.writeEndElement();
+	}
+	
+	@Override
+	public void writeEndDocument() throws XMLStreamException {
+		depth--;
+		delegate.writeCharacters("\n"+getIdent());
+		delegate.writeEndDocument();
+	}
+	
+	@Override
+	public void writeEmptyElement(String namespaceURI, String localName) throws XMLStreamException {
+		delegate.writeEmptyElement(namespaceURI, localName);
+	}
+
+	@Override
+	public void writeEmptyElement(String prefix, String localName, String namespaceURI) throws XMLStreamException {
+		delegate.writeEmptyElement(prefix, localName, namespaceURI);
+	}
+
+	@Override
+	public void writeEmptyElement(String localName) throws XMLStreamException {
+		delegate.writeEmptyElement(localName);
+	}
+
+	@Override
+	public void writeAttribute(String localName, String value) throws XMLStreamException {
+		delegate.writeAttribute( localName, value);
+		
+	}
+
+	@Override
+	public void writeAttribute(String prefix, String namespaceURI, String localName, String value)
+			throws XMLStreamException {
+		delegate.writeAttribute(prefix, namespaceURI, localName, value);
+	}
+
+	@Override
+	public void writeAttribute(String namespaceURI, String localName, String value) throws XMLStreamException {
+		delegate.writeAttribute(namespaceURI, localName, value);
+	}
+
+	@Override
+	public void writeNamespace(String prefix, String namespaceURI) throws XMLStreamException {
+		delegate.writeNamespace(prefix, namespaceURI);	
+	}
+
+	@Override
+	public void writeDefaultNamespace(String namespaceURI) throws XMLStreamException {
+		delegate.writeDefaultNamespace(namespaceURI);
+	}
+
+	@Override
+	public void writeComment(String data) throws XMLStreamException {
+		delegate.writeComment(data);
+		
+	}
+
+	@Override
+	public void writeProcessingInstruction(String target) throws XMLStreamException {
+		delegate.writeProcessingInstruction(target);
+	}
+
+	@Override
+	public void writeProcessingInstruction(String target, String data) throws XMLStreamException {
+		delegate.writeProcessingInstruction(target, data);
+	}
+
+	@Override
+	public void writeCData(String data) throws XMLStreamException {
+		delegate.writeCData(data);
+	}
+
+	@Override
+	public void writeDTD(String dtd) throws XMLStreamException {
+		delegate.writeDTD(dtd);	
+	}
+
+	@Override
+	public void writeEntityRef(String name) throws XMLStreamException {
+		delegate.writeEntityRef(name);
+	}
+
+	
+
+	@Override
+	public void writeCharacters(String text) throws XMLStreamException {
+		delegate.writeCharacters(text);
+	}
+
+	@Override
+	public void writeCharacters(char[] text, int start, int len) throws XMLStreamException {
+		delegate.writeCharacters(text, start, len);
+	}
+
+	@Override
+	public void setNamespaceContext(NamespaceContext context) throws XMLStreamException {
+		delegate.setNamespaceContext(context);
+	}
+	
+
+}