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/*
* Copyright (c) 2010-2015, Isode Limited, London, England.
* All rights reserved.
*/
package com.isode.stroke.parser;
import com.fasterxml.aalto.AsyncInputFeeder;
import com.fasterxml.aalto.AsyncXMLStreamReader;
import com.fasterxml.aalto.stax.InputFactoryImpl;
import com.isode.stroke.base.ByteArray;
import java.util.logging.Logger;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
/**
* Parser based around the Aalto XML parser
*/
class AaltoXMLParser extends XMLParser {
private final Logger logger_ = Logger.getLogger(this.getClass().getName());
private boolean error_ = false;
private final AsyncXMLStreamReader xmlReader_ = new InputFactoryImpl().createAsyncXMLStreamReader();
public AaltoXMLParser(XMLParserClient client) {
super(client);
}
/**
* Cause the parser thread to parse these data.
*/
@Override
public boolean parse(String data) {
if (data.isEmpty()) {
return false;
}
final AsyncInputFeeder inputFeeder = xmlReader_.getInputFeeder();
final byte[] xmlBytes = new ByteArray(data).getData();
int type = 0;
boolean error = false;
try {
inputFeeder.feedInput(xmlBytes, 0, xmlBytes.length);
} catch (XMLStreamException ex) {
error = true;
/* This is an unexpected error */
throw new IllegalStateException(ex);
}
try {
while ((type = xmlReader_.next()) != XMLStreamConstants.END_DOCUMENT && type != AsyncXMLStreamReader.EVENT_INCOMPLETE) {
QName name;
switch (type) {
case XMLStreamConstants.START_ELEMENT:
name = xmlReader_.getName();
AttributeMap attributes = new AttributeMap();
for (int i = 0; i < xmlReader_.getAttributeCount(); i++) {
QName attributeName = xmlReader_.getAttributeName(i);
attributes.addAttribute(attributeName.getLocalPart(), attributeName.getNamespaceURI(), xmlReader_.getAttributeValue(i));
}
getClient().handleStartElement(name.getLocalPart(), name.getNamespaceURI(), attributes);
break;
case XMLStreamConstants.END_ELEMENT:
name = xmlReader_.getName();
getClient().handleEndElement(name.getLocalPart(), name.getNamespaceURI());
break;
case XMLStreamConstants.CHARACTERS:
getClient().handleCharacterData(xmlReader_.getText());
break;
}
}
} catch (XMLStreamException e) {
error = true;
/* This type of error (illegal XML) is ~expected */
}
if (type == XMLStreamConstants.END_DOCUMENT) {
try {
xmlReader_.close();
} catch (XMLStreamException ex) {
/* If the parser errors while we're shutting down, it's not much of an error.*/
}
}
return !error;
}
}
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