1 package com.android.hotspot2.omadm; 2 3 import org.xml.sax.Attributes; 4 import org.xml.sax.InputSource; 5 import org.xml.sax.SAXException; 6 import org.xml.sax.helpers.DefaultHandler; 7 8 import java.io.IOException; 9 import java.io.StringReader; 10 11 import javax.xml.parsers.ParserConfigurationException; 12 import javax.xml.parsers.SAXParser; 13 import javax.xml.parsers.SAXParserFactory; 14 15 /** 16 * Parses an OMA-DM XML tree. 17 */ 18 public class OMAParser extends DefaultHandler { 19 private XMLNode mRoot; 20 private XMLNode mCurrent; 21 OMAParser()22 public OMAParser() { 23 mRoot = null; 24 mCurrent = null; 25 } 26 parse(String text, String urn)27 public MOTree parse(String text, String urn) throws IOException, SAXException { 28 try { 29 SAXParser parser = SAXParserFactory.newInstance().newSAXParser(); 30 parser.parse(new InputSource(new StringReader(text)), this); 31 return new MOTree(mRoot, urn); 32 } catch (ParserConfigurationException pce) { 33 throw new SAXException(pce); 34 } 35 } 36 37 @Override startElement(String uri, String localName, String qName, Attributes attributes)38 public void startElement(String uri, String localName, String qName, Attributes attributes) 39 throws SAXException { 40 XMLNode parent = mCurrent; 41 42 mCurrent = new XMLNode(mCurrent, qName, attributes); 43 44 if (mRoot == null) 45 mRoot = mCurrent; 46 else 47 parent.addChild(mCurrent); 48 } 49 50 @Override endElement(String uri, String localName, String qName)51 public void endElement(String uri, String localName, String qName) throws SAXException { 52 if (!qName.equals(mCurrent.getTag())) 53 throw new SAXException("End tag '" + qName + "' doesn't match current node: " + 54 mCurrent); 55 56 try { 57 mCurrent.close(); 58 } catch (IOException ioe) { 59 throw new SAXException("Failed to close element", ioe); 60 } 61 62 mCurrent = mCurrent.getParent(); 63 } 64 65 @Override characters(char[] ch, int start, int length)66 public void characters(char[] ch, int start, int length) throws SAXException { 67 mCurrent.addText(ch, start, length); 68 } 69 } 70