Android Open Source - AndroidFileBroadcast Xml Parser

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License

The source code is released under:

Apache License

Java Source Code

package com.common.methods;
//w ww. ja  va  2s  . c  o m
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import android.content.res.AssetManager;
import android.util.Log;
 
public class XmlParser{
    String fname;
    String fpath;
    Document doc ;
    XMLDOMParser parser = new XMLDOMParser();
    AssetManager asset_manager;
    static Map <String,String> hm = new HashMap<String,String>();
    ArrayList<String> retList = new ArrayList<String>();
    // XML node names
    static final String NODE_FILE = "file";
    static final String NODE_NAME = "name";
    static final String NODE_PATH = "path";
    static File xmlPath;
  
  public XmlParser(File file){
    xmlPath = file;
    File xmlFile = new File(xmlPath,"list.xml");
    InputStream stream;
    try {
      if (xmlFile.createNewFile()){
  //      xmlFile.
        FileWriter fw = new FileWriter(xmlFile.getAbsoluteFile());
        BufferedWriter bw = new BufferedWriter(fw);
        bw.write("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><list><file><name>some.mp3</name></file></list>");
        bw.close();
        stream = new FileInputStream(xmlFile);
        doc = parser.getDocument(stream);
        
   
      }
      else{
        stream = new FileInputStream(xmlFile);
        doc = parser.getDocument(stream);
        NodeList nodeList = doc.getElementsByTagName(NODE_FILE);

              for (int i = 0; i < nodeList.getLength(); i++) {
                  Element e = (Element) nodeList.item(i);
                  fname= parser.getValue(e, NODE_NAME).toString();
                  fpath = parser.getValue(e, NODE_PATH).toString();
                  hm.put(fname,fpath);
              }

          
      }
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }
  
  public ArrayList<String> fileList(){
     // Get elements by name file
        NodeList nodeList = doc.getElementsByTagName(NODE_FILE);

        for (int i = 0; i < nodeList.getLength(); i++) {
            Element e = (Element) nodeList.item(i);
            fname= parser.getValue(e, NODE_NAME).toString();
            fpath = parser.getValue(e, NODE_PATH).toString();
            hm.put(fname,fpath);
            retList.add(fname);
            Log.d("msg","hello");
        }
    return retList;
  }
  static public String getFilePath(String name)
  {
    return hm.get(name);
  }
  public void addFile(String fname,String fpath)
  {
    NodeList rootList = doc.getElementsByTagName("list");
    Node root = rootList.item(0);
    Element newFile = doc.createElement("file");
    Element newFname = doc.createElement("name");
    Element newFpath = doc.createElement("path");
    
    newFile.appendChild(newFname);
    newFname.appendChild(doc.createTextNode(fname));
    
    
    newFile.appendChild(newFpath);
    newFpath.appendChild(doc.createTextNode(fpath));
    
    root.appendChild(newFile);
    try {
      Transformer tFormer = TransformerFactory.newInstance().newTransformer();
           tFormer.setOutputProperty(OutputKeys.METHOD, "xml");
           Source source = new DOMSource(doc);
           Log.d("source",source.toString());
           File xfl= new File(xmlPath,"list.xml");
             Result result = new StreamResult(xfl);
         
      tFormer.transform(source, result);
    } catch (TransformerException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    hm.put(fname, fpath);
  }
  static public Map<String,String> getFileMap()
  {
    return hm;
  }
  static public void checkXml(File fpath,String fname)
  {
    File xfl= new File(fpath,fname);
    if(!(xfl.exists()))
       {
         try{
           xfl.createNewFile();
           FileWriter fw = new FileWriter(xfl.getAbsoluteFile());
           BufferedWriter bw = new BufferedWriter(fw);
           bw.write("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><list></list>");
        bw.close();
         }
         catch(IOException e1){
           e1.printStackTrace();
         }
       }
  }
}

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