public Layer<T> transform(final Layer<T> source) throws IOException, XMLStreamException {
this.source = source;
this.target = configuration.start(source);
try {
source.stream(
new Text.Consumer() {
@Override
public void consume(Reader sourceReader) throws IOException {
XMLStreamReader xmlStream = null;
try {
xmlStream = xmlInputFactory.createXMLStreamReader(sourceReader);
final Stack<XMLEntity> entities = new Stack<XMLEntity>();
start();
while (xmlStream.hasNext()) {
final int event = xmlStream.next();
mapOffsetDelta(0, xmlStream.getLocation().getCharacterOffset() - sourceOffset);
switch (event) {
case XMLStreamConstants.START_ELEMENT:
endText();
nextSibling();
start(entities.push(XMLEntity.newElement(xmlStream)));
break;
case XMLStreamConstants.END_ELEMENT:
endText();
end(entities.pop());
break;
case XMLStreamConstants.COMMENT:
endText();
nextSibling();
emptyEntity(XMLEntity.newComment(xmlStream));
break;
case XMLStreamConstants.PROCESSING_INSTRUCTION:
endText();
nextSibling();
emptyEntity(XMLEntity.newPI(xmlStream));
break;
case XMLStreamConstants.CHARACTERS:
case XMLStreamConstants.ENTITY_REFERENCE:
case XMLStreamConstants.CDATA:
newText(xmlStream.getText());
break;
}
}
end();
} catch (XMLStreamException e) {
throw Throwables.propagate(e);
} finally {
XML.closeQuietly(xmlStream);
}
}
});
Reader textReader = null;
try {
configuration.end(target, textReader = read());
return target;
} finally {
Closeables.close(textReader, false);
}
} catch (Throwable t) {
Throwables.propagateIfInstanceOf(t, IOException.class);
Throwables.propagateIfInstanceOf(Throwables.getRootCause(t), XMLStreamException.class);
throw Throwables.propagate(t);
}
}
