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package com.android.server.wifi.hotspot2.omadm;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import java.io.IOException;
import java.io.StringReader;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
/**
* Parses an OMA-DM XML tree.
* OMA-DM = Open Mobile Association Device Management
*/
public class OMAParser extends DefaultHandler {
private XMLNode mRoot;
private XMLNode mCurrent;
public OMAParser() {
mRoot = null;
mCurrent = null;
}
public MOTree parse(String text, String urn) throws IOException, SAXException {
try {
SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
parser.parse(new InputSource(new StringReader(text)), this);
return new MOTree(mRoot, urn);
} catch (ParserConfigurationException pce) {
throw new SAXException(pce);
}
}
public XMLNode getRoot() {
return mRoot;
}
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes)
throws SAXException {
XMLNode parent = mCurrent;
mCurrent = new XMLNode(mCurrent, qName, attributes);
if (mRoot == null)
mRoot = mCurrent;
else
parent.addChild(mCurrent);
}
@Override
public void endElement(String uri, String localName, String qName) throws SAXException {
if (!qName.equals(mCurrent.getTag()))
throw new SAXException("End tag '" + qName + "' doesn't match current node: " +
mCurrent);
try {
mCurrent.close();
} catch (IOException ioe) {
throw new SAXException("Failed to close element", ioe);
}
mCurrent = mCurrent.getParent();
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
mCurrent.addText(ch, start, length);
}
}
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