| package com.android.hotspot2.osu; |
| |
| import com.android.hotspot2.omadm.XMLNode; |
| |
| import org.xml.sax.Attributes; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| import org.xml.sax.helpers.DefaultHandler; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.nio.charset.StandardCharsets; |
| |
| import javax.xml.parsers.ParserConfigurationException; |
| import javax.xml.parsers.SAXParser; |
| import javax.xml.parsers.SAXParserFactory; |
| |
| public class XMLParser extends DefaultHandler { |
| private final SAXParser mParser; |
| private final InputSource mInputSource; |
| |
| private XMLNode mRoot; |
| private XMLNode mCurrent; |
| |
| public XMLParser(InputStream in) throws ParserConfigurationException, SAXException { |
| mParser = SAXParserFactory.newInstance().newSAXParser(); |
| mInputSource = new InputSource(new BufferedReader( |
| new InputStreamReader(in, StandardCharsets.UTF_8))); |
| } |
| |
| public XMLNode getRoot() throws SAXException, IOException { |
| mParser.parse(mInputSource, this); |
| 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); |
| //System.out.println("Added " + mCurrent.getTag() + ", atts " + mCurrent.getAttributes()); |
| |
| 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); |
| } |
| } |