Jskad/source/org/thdl/tib/scanner/RemoteTibetanScanner.java

/*
The contents of this file are subject to the AMP Open Community License
Version 1.0 (the "License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License on the AMP web site 
(http://www.tibet.iteso.mx/Guatemala/).

Software distributed under the License is distributed on an "AS IS" basis, 
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the 
License for the specific terms governing rights and limitations under the 
License. 

The Initial Developer of this software is Andres Montano Pellegrini. Portions
created by Andres Montano Pellegrini are Copyright 2001 Andres Montano
Pellegrini. All Rights Reserved. 

Contributor(s): ______________________________________.
*/
package org.thdl.tib.scanner;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;

import org.thdl.util.SimplifiedLinkedList;

/** Used by applets and applications to access remote on-line dictionaries.
    Sends Tibetan text, and receives the words with their definitions. The
    {@link RemoteScannerFilter} receives the requests on the server.
    
    @author Andrés Montano Pellegrini
    @see RemoteScannerFilter
*/
public class RemoteTibetanScanner extends TibetanScanner
{
	private String url;
	private BitDictionarySource defSourcesWanted;
		
	public RemoteTibetanScanner(String url) throws Exception
	{
	    super();
		defSourcesWanted = new BitDictionarySource().getAllDictionaries();
		this.url = url;
	}
	
	/** dont use */
	public void scanLine(String linea)
	{
		scanBody(linea);
	}
	
	public void scanBody(String linea)
	{
		try
		{
			URLConnection uC = new URL(url + "?dicts=" + Integer.toString(defSourcesWanted.getDicts())).openConnection();
			// URLConnection uC = new URL(url).openConnection();
			uC.setDoInput(true);
			uC.setDoOutput(true);
			uC.setUseCaches(false);
			uC.setRequestProperty("Content-type", "application/octet-stream");
			OutputStream os = uC.getOutputStream();
			PrintWriter pw = new PrintWriter(os);
			
			pw.println(linea);
			pw.close();

			BufferedReader in = new BufferedReader(new InputStreamReader(uC.getInputStream()));
			String word, eachDef, def;
			outside:
			while((word = in.readLine())!=null && (def = in.readLine())!=null)
			{
				do
				{
					eachDef = in.readLine();
					if (eachDef==null)
					{
						wordList.addLast(new Word(word, def));
						break outside;
					}
					if (eachDef.equals("")) break;
					def+='\n' + eachDef;
				}
				while(true);
				wordList.addLast(new Word(word, def));
			}
			in.close();
		}
		catch (Exception e)
		{
			System.out.println(e);
		}
	}
	

	/** does not do anything */
	public void finishUp()
	{
	}	
	
	public BitDictionarySource getDictionarySource()
	{
		return defSourcesWanted;
	}
	
	public String[] getDictionaryDescriptions()
	{
		int n;
		try
		{
			URLConnection uC = new URL(url+"?dicts=names").openConnection();
			uC.setDoInput(true);
			uC.setDoOutput(false);
			uC.setUseCaches(false);
			uC.setRequestProperty("Content-type", "text/plain");

			BufferedReader br = new BufferedReader(new InputStreamReader(uC.getInputStream()));
			SimplifiedLinkedList ll1 = new SimplifiedLinkedList(), ll2 = new SimplifiedLinkedList();
			String s;
			while ((s=br.readLine())!=null)
			{
				n = s.indexOf(",");
				if (n < 0)
				{
					ll1.addLast(null);
					ll2.addLast(s);
				}
				else
				{
					ll1.addLast(s.substring(0,n).trim());
					ll2.addLast(s.substring(n+1).trim());
				}
			}
			br.close();
			DictionarySource.setTags(ll2.toStringArray());
			return ll1.toStringArray();
		}
		catch (Exception e)
		{
			return null;
		}
	}
    public void destroy()
    {
    }
}