source: other-projects/tipple-android/trunk/src/org/greenstone/android/tipple/XMLToHashmapHandler.java@ 23977

package org.greenstone.android.tipple;

import java.util.HashMap;
import java.util.ArrayList;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

public class XMLToHashmapHandler extends DefaultHandler 
{
    String lockon_element_;
    Boolean locked_on_;
    ArrayList<HashMap<String,String>> lockon_list_; 
    
    HashMap<String,String> hashmap_;
    String active_element_;
    StringBuffer inner_text_;
    
    public XMLToHashmapHandler(String lockon_element)
    {
        // initial settings to parse a file 
        lockon_element_ = lockon_element;
        lockon_list_ = new ArrayList<HashMap<String,String>>();
        locked_on_ = false;
    }
    
    public ArrayList<HashMap<String,String>> getHashmapList() 
    {
        return lockon_list_;
    }

    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) 
        throws SAXException 
    {
        if (localName.equalsIgnoreCase(lockon_element_)) {
            hashmap_ = new HashMap<String,String>();
            locked_on_ = true; // => covert each child element inside this to a hashmap key
        }
        else if (locked_on_) {
            active_element_ = localName.toLowerCase();
            inner_text_ = new StringBuffer();
        }
        // else ignore element as outside area of interest
    }

    @Override
    public void endElement(String uri, String localName, String qName) 
        throws SAXException 
    {
        if (localName.equalsIgnoreCase(lockon_element_)) {
            // push hashmap onto arraylist
            lockon_list_.add(hashmap_);
            hashmap_ = null;
            
            locked_on_ = false;
        }
        else if (localName.equalsIgnoreCase(active_element_))
        {
            // add 'inner_text_' into hashmap under the key 'active_element_';
            hashmap_.put(active_element_,inner_text_.toString());
            //Log.d("***", "Saving: " + active_element_+ " = " + inner_text_.toString() + "\n");
            active_element_ = null;
            inner_text_ = null;
        }
    }

    @Override
    public void characters(char[] ch, int start, int length)
        throws SAXException 
    {
        if ((locked_on_) && (active_element_ != null)) {
            String text = new String(ch,start,length);
            inner_text_.append(text);
        }
    }

}