/** * JWAP - A Java Implementation of the WAP Protocols * Copyright (C) 2001-2004 Niko Bender * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */package net.sourceforge.jwap.util.wbxml;/** * * @author <a href="mailto:suvarna@witscale.com">Suvarna Kadam</a> */import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.util.Hashtable;import java.util.Iterator;import java.util.Map;import java.util.Properties;import java.util.Vector;import javax.xml.parsers.DocumentBuilderFactory;import org.w3c.dom.Document;import org.w3c.dom.Element;import org.w3c.dom.NodeList;public class TokenRepository {	private static Properties urnMappings;	private static TokenRepository instance;	private static byte CODEPAGE_DEFAULT = (byte) 0;	private static byte currentCodepage = CODEPAGE_DEFAULT;	//	private byte wbxmlEncoding;	//	private byte charEncoding;	//	private String publicID;	private Document tokenDoc;	//	private Hashtable tags;	//	private Hashtable attributeNames;	//private Hashtable attributeNameTokens; // for decoder	//	private Hashtable attributeValues;	//	private Hashtable attributePrefixes;	private Hashtable[][] codepages;	private TokenRepository() {	}	public static TokenRepository getInstance(String publicIDInHex) {		if (instance == null) {			instance = new TokenRepository();			instance.initializeFor(publicIDInHex);		}		return instance;	}	public void initializeFor(String publicIDInHex) {		try {			Properties tokenRepositoryMappings = new Properties();			tokenRepositoryMappings.load(				new FileInputStream("./tokenRepositoryMappings.properties"));			String fileName =				tokenRepositoryMappings.getProperty(publicIDInHex);			tokenDoc =				DocumentBuilderFactory					.newInstance()					.newDocumentBuilder()					.parse(					fileName);			initializeURNMappings();			initializeHeaderInfo();			currentCodepage = CODEPAGE_DEFAULT;		} catch (Exception exp) {			exp.printStackTrace();		}	}	private void initializeURNMappings() {		urnMappings = new Properties();		try {			urnMappings.load(				new FileInputStream("./urnCodepageMappings.properties"));		} catch (FileNotFoundException fnfExp) {			fnfExp.printStackTrace();		} catch (IOException ioExp) {			ioExp.printStackTrace();		}	}	private void initializeHeaderInfo() {		int total_codePages =			tokenDoc.getElementsByTagName("codepage").getLength();		codepages = new Hashtable[total_codePages][5];		for (int i = 0; i < codepages.length; i++) {			Element codepage = getCodepage(i);			initializeTags(codepage, i);			initializeAttributeNames(codepage, i);			initializeAttributeNameTokens(codepage, i);			initializeAttributeValues(codepage, i);		}		//		publicID = codePage.getAttribute("publicID");		//		String wbxmlEncodingStr = codePage.getAttribute("wbxmlVersion");		//		int dotPosition = wbxmlEncodingStr.indexOf('.');		//		byte majorVersion =		//			Byte.parseByte(wbxmlEncodingStr.substring(0, dotPosition));		//		majorVersion = (byte) (majorVersion - 1);		//		byte minorVersion =		//			Byte.parseByte(		//				wbxmlEncodingStr.substring(wbxmlEncodingStr.indexOf('.') + 1));		//		wbxmlEncoding = (byte) ((majorVersion << 4) + minorVersion);		//		String charEncodingStr = codePage.getAttribute("default_encoding");		//		charEncoding =		//			(byte) IANACharSet.getMIBEnum(charEncodingStr.toUpperCase());	}	private void initializeTags(Element codepage, int codePageNo) {		Hashtable tags = new Hashtable();		NodeList tagNodes = codepage.getElementsByTagName("tag");		Element aTag;		for (int i = 0; i < tagNodes.getLength(); i++) {			aTag = (Element) tagNodes.item(i);			tags.put(				aTag.getAttribute("name").toLowerCase(),				aTag.getAttribute("token-value"));		}		codepages[codePageNo][0] = tags;	}	private Element getCodepage(int codePageNo) {		NodeList allCodepages = tokenDoc.getElementsByTagName("codepage");		for (int i = 0; i < allCodepages.getLength(); i++) {			Element codepage = (Element) allCodepages.item(i);			if (Integer.parseInt(codepage.getAttribute("number").trim())				== codePageNo)				return codepage;		}		return null;	}	private void initializeAttributeNames(Element codepage, int codePageNo) {		Hashtable attributeNames = new Hashtable();		Hashtable attributePrefixes = new Hashtable();		NodeList attributeNameNodes =			codepage.getElementsByTagName("attribute-start");		Element anAttributeNameNode;		for (int i = 0; i < attributeNameNodes.getLength(); i++) {			anAttributeNameNode = (Element) attributeNameNodes.item(i);			String name = anAttributeNameNode.getAttribute("name");			String prefix = anAttributeNameNode.getAttribute("prefix");			String key = name + prefix;			attributeNames.put(				key.toLowerCase(),				anAttributeNameNode.getAttribute("token-value"));			if (attributePrefixes.containsKey(name))				 ((Vector) attributePrefixes.get(name)).addElement(prefix);			else {				Vector prefixes = new Vector();				prefixes.addElement(prefix);				attributePrefixes.put(name, prefixes);			}		}		codepages[codePageNo][1] = attributeNames;		codepages[codePageNo][2] = attributePrefixes;	}	private void initializeAttributeNameTokens(		Element codepage,		int codePageNo) {		Hashtable attributeNameTokens = new Hashtable();		NodeList attributeNameNodes =			tokenDoc.getElementsByTagName("attribute-start");		Element anAttributeNameNode;		for (int i = 0; i < attributeNameNodes.getLength(); i++) {			anAttributeNameNode = (Element) attributeNameNodes.item(i);			String token =				String.valueOf(					getByteValue(						anAttributeNameNode.getAttribute("token-value")));			String[] nameAndPrefixes = new String[2];			String name = anAttributeNameNode.getAttribute("name");			String prefix = anAttributeNameNode.getAttribute("prefix");			nameAndPrefixes[0] = name;			nameAndPrefixes[1] = prefix;			attributeNameTokens.put(token.toLowerCase(), nameAndPrefixes);		}		codepages[codePageNo][4] = attributeNameTokens;	}	private void initializeAttributeValues(Element codepage, int codePageNo) {		Hashtable attributeValues = new Hashtable();		NodeList attributeValueNodes =			codepage.getElementsByTagName("attribute-value");		Element anAttributeValueNode;		for (int i = 0; i < attributeValueNodes.getLength(); i++) {			anAttributeValueNode = (Element) attributeValueNodes.item(i);			attributeValues.put(				anAttributeValueNode.getAttribute("name").toLowerCase(),				anAttributeValueNode.getAttribute("token-value"));		}		codepages[codePageNo][3] = attributeValues;	}	public byte getTagToken(String tagName) {		Hashtable tags = codepages[currentCodepage][0];		return getByteValue(tags.get(tagName.toLowerCase()).toString());	}	private byte getByteValue(String value) {		try {			//byte tokenValue = Byte.parseByte(value, 16);			byte tokenValue = Integer.valueOf(value, 16).byteValue();			return tokenValue;		} catch (Exception exp) {			System.out.println("token not found!!!, returning literal");			return GlobalTokens.LITERAL;		}	}	public String getPublicIdentifier() {		Element codePage =			(Element) tokenDoc.getElementsByTagName("codepage").item(0);		return codePage.getAttribute("publicID");	}	public String getTagName(byte tokenValue) {		Hashtable tags = codepages[currentCodepage][0];		Iterator iterator = tags.entrySet().iterator();		return getKeyFromValue(iterator, tokenValue);	}	public String[] getAttributeNameAndPrefix(byte tokenValue) {		Hashtable attributeNameTokens = codepages[currentCodepage][4];		String token = String.valueOf(tokenValue);		return (String[]) attributeNameTokens.get(token);	}	public byte getAttributeNameToken(String attributeName, String prefix) {		Hashtable attributeNames = codepages[currentCodepage][1];		String token =			(String) attributeNames.get((attributeName + prefix).toLowerCase());		if (token == null)			return GlobalTokens.LITERAL;		return getByteValue(token);	}	public Vector getAttributePrefixes(String attributeName) {		Hashtable attributePrefixes = codepages[currentCodepage][2];		return (Vector) attributePrefixes.get(attributeName);	}	public String getAttributeValue(byte tokenValue) {		Hashtable attributeValues = codepages[currentCodepage][3];		Iterator iterator = attributeValues.entrySet().iterator();		return getKeyFromValue(iterator, tokenValue);	}	public byte getAttributeValueToken(String attributeValue) {		Hashtable attributeValues = codepages[currentCodepage][3];		String hexValue =			attributeValues.get(attributeValue.toLowerCase()).toString();		return getByteValue(hexValue);	}	private String getKeyFromValue(Iterator iterator, byte tokenValue) {		while (iterator.hasNext()) {			Map.Entry entry = (Map.Entry) iterator.next();			if (getByteValue(entry.getValue().toString()) == tokenValue)				return entry.getKey().toString();		}		return null;	}	/**	* Returns the attributeValues.	* @return Hashtable	*/	public Hashtable getAttributeValues() {		Hashtable attributeValues = codepages[currentCodepage][3];		return attributeValues;	}	public static void switchCodepage(String namespaceURN) {		if (namespaceURN == null)			currentCodepage = CODEPAGE_DEFAULT;		else {			byte codepage =				Integer					.valueOf(urnMappings.get(namespaceURN).toString())					.byteValue();			currentCodepage = codepage;		}	}	public static void setCurrentCodepage(byte codePageNo) {		currentCodepage = codePageNo;	}	public static byte getCurrentCodepage() {		return currentCodepage;	}	/**	 * @return String	 */	public String getCurrentNamespace() {		// TODO Auto-generated method stub		return null;	}}