org.eclipse.help.webapp/src/org/eclipse/help/internal/webapp/servlet/NavServlet.java - platform/eclipse.platform.ua - Git at Google

 /*******************************************************************************
  * Copyright (c) 2007, 2011 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.help.internal.webapp.servlet;

 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.io.PrintWriter;
 import java.util.Locale;
 import java.util.StringTokenizer;

 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;

 import org.eclipse.help.ITopic;
 import org.eclipse.help.base.AbstractHelpScope;
 import org.eclipse.help.internal.HelpPlugin;
 import org.eclipse.help.internal.base.MissingContentManager;
 import org.eclipse.help.internal.base.scope.ScopeUtils;
 import org.eclipse.help.internal.webapp.WebappResources;
 import org.eclipse.help.internal.webapp.data.RequestScope;
 import org.eclipse.help.internal.webapp.data.UrlUtil;
 import org.eclipse.help.webapp.IFilter;

 /*
  * Generates navigation pages where topics are not present in the table
  * of contents. Displays links to the direct child topics.
  */
 public class NavServlet extends HttpServlet {

 	private static final long serialVersionUID = 1L;

 	private static final String XHTML_1 = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n<title>"; //$NON-NLS-1$
 	private static final String XHTML_2 = "</title>\n</head>\n<body>\n"; //$NON-NLS-1$
 	private static final String XHTML_2_RTL = "</title>\n</head>\n<body dir = \"rtl\">\n"; //$NON-NLS-1$
 	private static final String XHTML_3 = "</body>\n</html>"; //$NON-NLS-1$

 	private static final IFilter filters[] = new IFilter[]{
 		new FramesetFilter(), new InjectionFilter(false), new BreadcrumbsFilter(),
 		new ShowInTocFilter(), new ExtraFilters() };

 	@Override
 	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
 		Locale locale = getLocale(req, resp);

 		req.setCharacterEncoding("UTF-8"); //$NON-NLS-1$
 		resp.setContentType("text/html; charset=UTF-8"); //$NON-NLS-1$

 		String path;
 		ITopic topic;
 		try {
 			path = req.getPathInfo().substring(1);
 			topic = getTopic(path, locale);
 		} catch (Exception e) {
 			showPageNotFoundPage(req, resp);
 			return;
 		}

 		OutputStream out = resp.getOutputStream();
 		for (IFilter filter : filters) {
 			out = filter.filter(req, out);
 		}

 		PrintWriter writer = new PrintWriter(new OutputStreamWriter(out, "UTF-8")); //$NON-NLS-1$
 		AbstractHelpScope scope = RequestScope.getScope(req, resp, false);
 		writeContent(topic, path, locale, writer, UrlUtil.isRTL(req, resp), scope);
 		writer.close();
 	}

 	private void showPageNotFoundPage(HttpServletRequest req,
 			HttpServletResponse resp) {
 		String errorPage = MissingContentManager.getInstance().getPageNotFoundPage(req.getServletPath(), false);
         if (errorPage != null && errorPage.length() > 0) {
         	String href = req.getRequestURL().toString();
         	int navIndex = href.indexOf("/nav"); //$NON-NLS-1$
         	if (navIndex >= 0 ) {
         		href = href.substring(0, navIndex);
         		href += "/nftopic"; //$NON-NLS-1$
         		if (errorPage.charAt(0) != '/') {
         			href += '/';
         		}
         		href += errorPage;
         		try {
 					resp.sendRedirect(href);
 					return;
 				} catch (IOException e) {
 					// Fall through
 				}
         	}
 	    }
 	    resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
 	}

 	protected Locale getLocale (HttpServletRequest req, HttpServletResponse resp) {
 		Locale locale;
 		String nl = UrlUtil.getLocale(req, resp);
 		// break the string into tokens to get the Locale object
 		StringTokenizer locales = new StringTokenizer(nl, "_"); //$NON-NLS-1$
 		if (locales.countTokens() == 1)
 			locale = new Locale(locales.nextToken(), ""); //$NON-NLS-1$
 		else if (locales.countTokens() == 2)
 			locale = new Locale(locales.nextToken(), locales.nextToken());
 		else if (locales.countTokens() == 3)
 			locale = new Locale(locales.nextToken(), locales.nextToken(), locales
 					.nextToken());
 		else
 			locale = Locale.getDefault();
 		return locale;
 	}

 	protected ITopic getTopic(String topicPath, Locale locale) {
 		StringTokenizer tok = new StringTokenizer(topicPath, "_"); //$NON-NLS-1$
 		int index = Integer.parseInt(tok.nextToken());
 		ITopic topic = HelpPlugin.getTocManager().getTocs(locale.toString())[index].getTopic(null);
 		while (tok.hasMoreTokens()) {
 			index = Integer.parseInt(tok.nextToken());
 			topic = topic.getSubtopics()[index];
 		}
 		return topic;
 	}

 	private void writeContent(ITopic topic, String path, Locale locale, PrintWriter writer, boolean isRTL, AbstractHelpScope scope) {
 		writer.write(XHTML_1);
 		writer.write(topic.getLabel());
 		if (isRTL) {
 			writer.write(XHTML_2_RTL);
 		} else {
 			writer.write(XHTML_2);
 		}
 		writer.write("<h1 class=\"NavTitle\">" + topic.getLabel() + "</h1>\n"); //$NON-NLS-1$ //$NON-NLS-2$
 		writer.write("<h3 class=\"NavListTitle\">" + WebappResources.getString("TocHeading", locale) + "</h3>\n"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 		writer.write("<ul class=\"NavList\">\n"); //$NON-NLS-1$
 		ITopic[] subtopics = topic.getSubtopics();
 		for (int i=0;i<subtopics.length;++i) {
 			if (ScopeUtils.showInTree(subtopics[i], scope)) {
 				writer.write("<li><a href=\""); //$NON-NLS-1$
 				String href = subtopics[i].getHref();
 				if (href == null) {
 					href = path + '_' + i;
 				} else {
 					href = XMLGenerator.xmlEscape(UrlUtil.getHelpURL(href));
 					href = TocFragmentServlet.fixupHref(href, path + '_' + i);
 				}
 				writer.write(href);
 				writer.write("\">" + subtopics[i].getLabel() + "</a></li>\n");  //$NON-NLS-1$//$NON-NLS-2$
 			}
 		}
 		writer.write("</ul>\n"); //$NON-NLS-1$
 		writer.write(XHTML_3);
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2007, 2011 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.help.internal.webapp.servlet;

	import java.io.IOException;
	import java.io.OutputStream;
	import java.io.OutputStreamWriter;
	import java.io.PrintWriter;
	import java.util.Locale;
	import java.util.StringTokenizer;

	import javax.servlet.ServletException;
	import javax.servlet.http.HttpServlet;
	import javax.servlet.http.HttpServletRequest;
	import javax.servlet.http.HttpServletResponse;

	import org.eclipse.help.ITopic;
	import org.eclipse.help.base.AbstractHelpScope;
	import org.eclipse.help.internal.HelpPlugin;
	import org.eclipse.help.internal.base.MissingContentManager;
	import org.eclipse.help.internal.base.scope.ScopeUtils;
	import org.eclipse.help.internal.webapp.WebappResources;
	import org.eclipse.help.internal.webapp.data.RequestScope;
	import org.eclipse.help.internal.webapp.data.UrlUtil;
	import org.eclipse.help.webapp.IFilter;

	/*
	* Generates navigation pages where topics are not present in the table
	* of contents. Displays links to the direct child topics.
	*/
	public class NavServlet extends HttpServlet {

	private static final long serialVersionUID = 1L;

	private static final String XHTML_1 = "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\n<head>\n<title>"; //$NON-NLS-1$
	private static final String XHTML_2 = "</title>\n</head>\n<body>\n"; //$NON-NLS-1$
	private static final String XHTML_2_RTL = "</title>\n</head>\n<body dir = \"rtl\">\n"; //$NON-NLS-1$
	private static final String XHTML_3 = "</body>\n</html>"; //$NON-NLS-1$

	private static final IFilter filters[] = new IFilter[]{
	new FramesetFilter(), new InjectionFilter(false), new BreadcrumbsFilter(),
	new ShowInTocFilter(), new ExtraFilters() };

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
	Locale locale = getLocale(req, resp);

	req.setCharacterEncoding("UTF-8"); //$NON-NLS-1$
	resp.setContentType("text/html; charset=UTF-8"); //$NON-NLS-1$

	String path;
	ITopic topic;
	try {
	path = req.getPathInfo().substring(1);
	topic = getTopic(path, locale);
	} catch (Exception e) {
	showPageNotFoundPage(req, resp);
	return;
	}

	OutputStream out = resp.getOutputStream();
	for (IFilter filter : filters) {
	out = filter.filter(req, out);
	}

	PrintWriter writer = new PrintWriter(new OutputStreamWriter(out, "UTF-8")); //$NON-NLS-1$
	AbstractHelpScope scope = RequestScope.getScope(req, resp, false);
	writeContent(topic, path, locale, writer, UrlUtil.isRTL(req, resp), scope);
	writer.close();
	}

	private void showPageNotFoundPage(HttpServletRequest req,
	HttpServletResponse resp) {
	String errorPage = MissingContentManager.getInstance().getPageNotFoundPage(req.getServletPath(), false);
	if (errorPage != null && errorPage.length() > 0) {
	String href = req.getRequestURL().toString();
	int navIndex = href.indexOf("/nav"); //$NON-NLS-1$
	if (navIndex >= 0 ) {
	href = href.substring(0, navIndex);
	href += "/nftopic"; //$NON-NLS-1$
	if (errorPage.charAt(0) != '/') {
	href += '/';
	}
	href += errorPage;
	try {
	resp.sendRedirect(href);
	return;
	} catch (IOException e) {
	// Fall through
	}
	}
	}
	resp.setStatus(HttpServletResponse.SC_NOT_FOUND);
	}

	protected Locale getLocale (HttpServletRequest req, HttpServletResponse resp) {
	Locale locale;
	String nl = UrlUtil.getLocale(req, resp);
	// break the string into tokens to get the Locale object
	StringTokenizer locales = new StringTokenizer(nl, "_"); //$NON-NLS-1$
	if (locales.countTokens() == 1)
	locale = new Locale(locales.nextToken(), ""); //$NON-NLS-1$
	else if (locales.countTokens() == 2)
	locale = new Locale(locales.nextToken(), locales.nextToken());
	else if (locales.countTokens() == 3)
	locale = new Locale(locales.nextToken(), locales.nextToken(), locales
	.nextToken());
	else
	locale = Locale.getDefault();
	return locale;
	}

	protected ITopic getTopic(String topicPath, Locale locale) {
	StringTokenizer tok = new StringTokenizer(topicPath, "_"); //$NON-NLS-1$
	int index = Integer.parseInt(tok.nextToken());
	ITopic topic = HelpPlugin.getTocManager().getTocs(locale.toString())[index].getTopic(null);
	while (tok.hasMoreTokens()) {
	index = Integer.parseInt(tok.nextToken());
	topic = topic.getSubtopics()[index];
	}
	return topic;
	}

	private void writeContent(ITopic topic, String path, Locale locale, PrintWriter writer, boolean isRTL, AbstractHelpScope scope) {
	writer.write(XHTML_1);
	writer.write(topic.getLabel());
	if (isRTL) {
	writer.write(XHTML_2_RTL);
	} else {
	writer.write(XHTML_2);
	}
	writer.write("<h1 class=\"NavTitle\">" + topic.getLabel() + "</h1>\n"); //$NON-NLS-1$ //$NON-NLS-2$
	writer.write("<h3 class=\"NavListTitle\">" + WebappResources.getString("TocHeading", locale) + "</h3>\n"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	writer.write("<ul class=\"NavList\">\n"); //$NON-NLS-1$
	ITopic[] subtopics = topic.getSubtopics();
	for (int i=0;i<subtopics.length;++i) {
	if (ScopeUtils.showInTree(subtopics[i], scope)) {
	writer.write("<li><a href=\""); //$NON-NLS-1$
	String href = subtopics[i].getHref();
	if (href == null) {
	href = path + '_' + i;
	} else {
	href = XMLGenerator.xmlEscape(UrlUtil.getHelpURL(href));
	href = TocFragmentServlet.fixupHref(href, path + '_' + i);
	}
	writer.write(href);
	writer.write("\">" + subtopics[i].getLabel() + "</a></li>\n"); //$NON-NLS-1$//$NON-NLS-2$
	}
	}
	writer.write("</ul>\n"); //$NON-NLS-1$
	writer.write(XHTML_3);
	}
	}