src/main/java/org/apache/sling/commons/fsclassloader/impl/FSClassLoaderWebConsole.java - sling-org-apache-sling-commons-fsclassloader - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
  */
 package org.apache.sling.commons.fsclassloader.impl;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.Writer;
 import java.net.MalformedURLException;
 import java.util.LinkedHashMap;
 import java.util.Map;

 import javax.servlet.Servlet;
 import javax.servlet.ServletConfig;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;

 import org.apache.commons.io.IOUtils;
 import org.apache.commons.lang3.StringEscapeUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.felix.webconsole.AbstractWebConsolePlugin;
 import org.apache.sling.commons.classloader.ClassLoaderWriter;
 import org.osgi.service.component.ComponentContext;
 import org.osgi.service.component.annotations.Activate;
 import org.osgi.service.component.annotations.Component;
 import org.osgi.service.component.annotations.Reference;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

 /**
  * Web Console for the FileSystem Class Loader. Allows users to download Java
  * and Class files.
  */
 @Component(service = Servlet.class,
     configurationPid = FSClassLoaderProvider.SHARED_CONFIGURATION_PID,
     property = {
          "service.description=Web Console for the FileSystem Class Loader",
 		 "service.vendor=The Apache Software Foundation",
 		 "felix.webconsole.label=" + FSClassLoaderWebConsole.APP_ROOT,
 		 "felix.webconsole.title=File System Class Loader",
 		 "felix.webconsole.css=" + FSClassLoaderWebConsole.RES_LOC + "/prettify.css",
 		 "felix.webconsole.category=Sling"
 })
 public class FSClassLoaderWebConsole extends AbstractWebConsolePlugin {

 	static final String APP_ROOT = "fsclassloader";

 	static final String RES_LOC = APP_ROOT + "/res/ui";
 	static final String POST_PARAM_CLEAR_CLASSLOADER = "clear";

 	private static final Logger LOG = LoggerFactory.getLogger(FSClassLoaderWebConsole.class);

 	@Reference(target = "(component.name=org.apache.sling.commons.fsclassloader.impl.FSClassLoaderProvider)")
 	private ClassLoaderWriter classLoaderWriter;

 	/**
 	 * The root under which the class files are under
 	 */
 	private File root;

 	/**
 	 * The serialization UID
 	 */
 	private static final long serialVersionUID = -5728679635644481848L;

 	/**
 	 * The servlet configuration
 	 */
 	private ServletConfig config;

 	/**
 	 * Activate this component. Create the root directory.
 	 *
 	 * @param componentContext
 	 *            the component context
 	 * @throws MalformedURLException
 	 */
 	@Activate
 	protected void activate(final ComponentContext componentContext, final FSClassLoaderComponentConfig config) throws MalformedURLException {
 		// get the file root
 		this.root = CacheLocationUtils.getRootDir(componentContext.getBundleContext(), config);
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see javax.servlet.Servlet#destroy()
 	 */
 	@Override
     public void destroy() {
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see javax.servlet.Servlet#service(javax.servlet.ServletRequest,
 	 * javax.servlet.ServletResponse)
 	 */
 	@Override
     protected void doGet(HttpServletRequest request, HttpServletResponse response)
 			throws ServletException, IOException {
 		String file = request.getParameter("download");
 		File toDownload = new File(root + file);
 		if (!StringUtils.isEmpty(file)) {
 			if (isValid(toDownload)) {
 				InputStream is = null;
 				try {
 					is = new FileInputStream(toDownload);
 					response.setHeader("Content-disposition", "attachment; filename=" + toDownload.getName());
 					IOUtils.copy(is, response.getOutputStream());
 				} finally {
 					IOUtils.closeQuietly(is);
 					IOUtils.closeQuietly(response.getOutputStream());
 				}
 			} else {
 				response.sendError(404, "File " + file + " not found");
 			}
 		} else if (request.getRequestURI().endsWith(RES_LOC + "/prettify.css")) {
 			response.setContentType("text/css");
 			IOUtils.copy(getClass().getClassLoader().getResourceAsStream("/res/ui/prettify.css"),
 					response.getOutputStream());
 		} else if (request.getRequestURI().endsWith(RES_LOC + "/prettify.js")) {
 			response.setContentType("application/javascript");
 			IOUtils.copy(getClass().getClassLoader().getResourceAsStream("/res/ui/prettify.js"),
 					response.getOutputStream());
 		} else if (request.getRequestURI().endsWith(RES_LOC + "/fsclassloader.js")) {
 			response.setContentType("application/javascript");
 			IOUtils.copy(getClass().getClassLoader().getResourceAsStream("/res/ui/fsclassloader.js"),
 					response.getOutputStream());
 		} else {
 			super.doGet(request, response);
 		}
 	}

 	@Override
 	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
 		String clear = req.getParameter(POST_PARAM_CLEAR_CLASSLOADER);
 		boolean shouldClear = Boolean.parseBoolean(clear);
 		if (shouldClear) {
 			if (classLoaderWriter != null) {
 				boolean result = classLoaderWriter.delete("");
 				if (result) {
 					resp.getWriter().write("{ \"status\" : \"success\" }");
 					resp.setStatus(HttpServletResponse.SC_OK);
 				} else {
 					resp.getWriter().write(
 							"{ \"status\" : \"failure\", \"message\" : \"unable to clear classloader; check server log\" }");
 					resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 				}
 			} else {
 				LOG.error(
 						"Cannot get a reference to org.apache.sling.commons.fsclassloader.impl.FSClassLoaderProvider");
 				resp.getWriter().write(
 						"{ \"status\" : \"failure\", \"message\" : \"unable to clear classloader; check server log\" }");
 				resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
 			}
 		} else {
 			resp.getWriter().write("{ \"status\" : \"failure\", \"message\" : \"invalid command\" }");
 			resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
 		}
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.apache.felix.webconsole.AbstractWebConsolePlugin#getLabel()
 	 */
 	@Override
 	public String getLabel() {
 		return "fsclassloader";
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see javax.servlet.Servlet#getServletConfig()
 	 */
 	@Override
     public ServletConfig getServletConfig() {
 		return this.config;
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see javax.servlet.Servlet#getServletInfo()
 	 */
 	@Override
     public String getServletInfo() {
 		return "";
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see org.apache.felix.webconsole.AbstractWebConsolePlugin#getTitle()
 	 */
 	@Override
 	public String getTitle() {
 		return "File System Class Loader";
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see javax.servlet.Servlet#init(javax.servlet.ServletConfig)
 	 */
 	@Override
     public void init(ServletConfig config) throws ServletException {
 		this.config = config;
 	}

 	/**
 	 * Checks whether the specified file is a file and is underneath the root
 	 * directory.
 	 *
 	 * @param file
 	 *            the file to check
 	 * @return false if not a file or not under the root directory, true
 	 *         otherwise
 	 * @throws IOException
 	 */
 	private boolean isValid(File file) throws IOException {
 		if (file.isFile()) {
 			File parent = file.getCanonicalFile().getAbsoluteFile().getParentFile();
 			while (parent != null) {
 				if (parent.getCanonicalPath().equals(root.getCanonicalPath())) {
 					return true;
 				}
 				parent = parent.getParentFile();
 			}
 		}
 		return false;
 	}

 	/**
 	 * Reads all of the files under the current file.
 	 *
 	 * @param current
 	 *            the current file
 	 * @param root
 	 *            the root file
 	 * @param scripts
 	 *            the map of scripts
 	 * @throws IOException
 	 *             an exception occurs reading the files
 	 */
 	protected static void readFiles(File current, File root, Map<String, ScriptFiles> scripts) throws IOException {
 		if (current.isDirectory()) {
 			File[] children = current.listFiles();
 			if (children != null) {
 				for (File f : children) {
 					readFiles(f, root, scripts);
 				}
 			}
 		} else {
 			String script = ScriptFiles.getScript(root, current);
 			if (!scripts.containsKey(script) && current.getName().endsWith(".java")) {
 				scripts.put(script, new ScriptFiles(root, current));
 			}
 		}
 	}

 	/*
 	 * (non-Javadoc)
 	 *
 	 * @see
 	 * org.apache.felix.webconsole.AbstractWebConsolePlugin#renderContent(javax
 	 * .servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
 	 */
 	@Override
 	protected void renderContent(HttpServletRequest request, HttpServletResponse response)
 			throws ServletException, IOException {
 		Map<String, ScriptFiles> scripts = new LinkedHashMap<String, ScriptFiles>();
 		readFiles(root, root, scripts);

 		Writer w = response.getWriter();

 		w.write("<link rel=\"stylesheet\" type=\"text/css\" href=\"" + RES_LOC + "/prettify.css\"></link>");
 		w.write("<script type=\"text/javascript\" src=\"" + RES_LOC + "/prettify.js\"></script>");
 		w.write("<script type=\"text/javascript\" src=\"" + RES_LOC + "/fsclassloader.js\"></script>");
 		w.write("<script>$(document).ready(prettyPrint);</script>");
 		w.write("<style>.prettyprint ol.linenums > li { list-style-type: decimal; } pre.prettyprint { white-space: pre-wrap; }</style>");
 		String file = request.getParameter("view");
 		File toView = new File(root + file);
 		w.write("<div id=\"classes\">");
 		if (!StringUtils.isEmpty(file)) {
 			if (isValid(toView)) {

 				w.write("<p class=\"statline ui-state-highlight\">Viewing Script: " + root + file + "</p><br/><br/>");

 				ScriptFiles scriptFiles = new ScriptFiles(root, toView);

 				w.write("<table class=\"nicetable ui-widget\">");
 				w.write("<tr class=\"header ui-widget-header\">");
 				w.write("<th>Script</th>");
 				w.write("<th>Class</th>");
 				w.write("<th>Deps</th>");
 				w.write("<th>Java</th>");
 				w.write("</tr>");
 				w.write("<tr class=\"ui-state-default\">");
 				w.write("<td>" + scriptFiles.getScript() + "</td>");
 				w.write("<td>[<a href=\"?download=" + scriptFiles.getClassFile()
 						+ "\" target=\"_blank\">download</a>]</td>");
 				w.write("<td>[<a href=\"?download=" + scriptFiles.getDepsFile()
 						+ "\" target=\"_blank\">download</a>]</td>");
 				w.write("<td>[<a href=\"?download=" + scriptFiles.getJavaFile()
 						+ "\" target=\"_blank\">download</a>]</td>");
 				w.write("</tr>");
 				w.write("</table><br/><br/>");
 				InputStream is = null;
 				try {
 					is = new FileInputStream(toView);
 					String contents = IOUtils.toString(is, "UTF-8");
 					w.write("<pre class=\"prettyprint linenums\">");
 					w.write(StringEscapeUtils.escapeHtml4(contents));
 					w.write("</pre>");
 				} finally {
 					IOUtils.closeQuietly(is);
 				}
 			} else {
 				response.sendError(404, "File " + file + " not found");
 			}
 		} else {
 			w.write("<p class=\"statline ui-state-highlight\">File System ClassLoader Root: " + root
 					+ " <span style=\"float: right\"><button type='button' id='clear'>Clear Class Loader</button></span></p>");
 			if (scripts.values().size() > 0) {
 				w.write("<table class=\"nicetable ui-widget fsclassloader-has-classes\">");
 			} else {
 				w.write("<table class=\"nicetable ui-widget\">");
 			}
 			w.write("<tr class=\"header ui-widget-header\">");
 			w.write("<th>View</th>");
 			w.write("<th>Script</th>");
 			w.write("</tr>");
 			int i = 0;
 			for (ScriptFiles scriptFiles : scripts.values()) {
 				w.write("<tr class=\"" + (i % 2 == 0 ? "even" : "odd") + " ui-state-default\">");
 				w.write("<td>[<a href=\"?view=" + scriptFiles.getJavaFile() + "\">view</a>]</td>");
 				w.write("<td>" + scriptFiles.getScript() + "</td>");
 				w.write("</tr>");
 				i++;
 			}
 			w.write("</table>");
 		}
 		w.write("</div>");
 	}
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you under the Apache License, Version 2.0 (the
	* "License"); you may not use this file except in compliance
	* with the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing,
	* software distributed under the License is distributed on an
	* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	* KIND, either express or implied. See the License for the
	* specific language governing permissions and limitations
	* under the License.
	*/
	package org.apache.sling.commons.fsclassloader.impl;

	import java.io.File;
	import java.io.FileInputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.Writer;
	import java.net.MalformedURLException;
	import java.util.LinkedHashMap;
	import java.util.Map;

	import javax.servlet.Servlet;
	import javax.servlet.ServletConfig;
	import javax.servlet.ServletException;
	import javax.servlet.http.HttpServletRequest;
	import javax.servlet.http.HttpServletResponse;

	import org.apache.commons.io.IOUtils;
	import org.apache.commons.lang3.StringEscapeUtils;
	import org.apache.commons.lang3.StringUtils;
	import org.apache.felix.webconsole.AbstractWebConsolePlugin;
	import org.apache.sling.commons.classloader.ClassLoaderWriter;
	import org.osgi.service.component.ComponentContext;
	import org.osgi.service.component.annotations.Activate;
	import org.osgi.service.component.annotations.Component;
	import org.osgi.service.component.annotations.Reference;
	import org.slf4j.Logger;
	import org.slf4j.LoggerFactory;

	/**
	* Web Console for the FileSystem Class Loader. Allows users to download Java
	* and Class files.
	*/
	@Component(service = Servlet.class,
	configurationPid = FSClassLoaderProvider.SHARED_CONFIGURATION_PID,
	property = {
	"service.description=Web Console for the FileSystem Class Loader",
	"service.vendor=The Apache Software Foundation",
	"felix.webconsole.label=" + FSClassLoaderWebConsole.APP_ROOT,
	"felix.webconsole.title=File System Class Loader",
	"felix.webconsole.css=" + FSClassLoaderWebConsole.RES_LOC + "/prettify.css",
	"felix.webconsole.category=Sling"
	})
	public class FSClassLoaderWebConsole extends AbstractWebConsolePlugin {

	static final String APP_ROOT = "fsclassloader";

	static final String RES_LOC = APP_ROOT + "/res/ui";
	static final String POST_PARAM_CLEAR_CLASSLOADER = "clear";

	private static final Logger LOG = LoggerFactory.getLogger(FSClassLoaderWebConsole.class);

	@Reference(target = "(component.name=org.apache.sling.commons.fsclassloader.impl.FSClassLoaderProvider)")
	private ClassLoaderWriter classLoaderWriter;

	/**
	* The root under which the class files are under
	*/
	private File root;

	/**
	* The serialization UID
	*/
	private static final long serialVersionUID = -5728679635644481848L;

	/**
	* The servlet configuration
	*/
	private ServletConfig config;

	/**
	* Activate this component. Create the root directory.
	*
	* @param componentContext
	* the component context
	* @throws MalformedURLException
	*/
	@Activate
	protected void activate(final ComponentContext componentContext, final FSClassLoaderComponentConfig config) throws MalformedURLException {
	// get the file root
	this.root = CacheLocationUtils.getRootDir(componentContext.getBundleContext(), config);
	}

	/*
	* (non-Javadoc)
	*
	* @see javax.servlet.Servlet#destroy()
	*/
	@Override
	public void destroy() {
	}

	/*
	* (non-Javadoc)
	*
	* @see javax.servlet.Servlet#service(javax.servlet.ServletRequest,
	* javax.servlet.ServletResponse)
	*/
	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException {
	String file = request.getParameter("download");
	File toDownload = new File(root + file);
	if (!StringUtils.isEmpty(file)) {
	if (isValid(toDownload)) {
	InputStream is = null;
	try {
	is = new FileInputStream(toDownload);
	response.setHeader("Content-disposition", "attachment; filename=" + toDownload.getName());
	IOUtils.copy(is, response.getOutputStream());
	} finally {
	IOUtils.closeQuietly(is);
	IOUtils.closeQuietly(response.getOutputStream());
	}
	} else {
	response.sendError(404, "File " + file + " not found");
	}
	} else if (request.getRequestURI().endsWith(RES_LOC + "/prettify.css")) {
	response.setContentType("text/css");
	IOUtils.copy(getClass().getClassLoader().getResourceAsStream("/res/ui/prettify.css"),
	response.getOutputStream());
	} else if (request.getRequestURI().endsWith(RES_LOC + "/prettify.js")) {
	response.setContentType("application/javascript");
	IOUtils.copy(getClass().getClassLoader().getResourceAsStream("/res/ui/prettify.js"),
	response.getOutputStream());
	} else if (request.getRequestURI().endsWith(RES_LOC + "/fsclassloader.js")) {
	response.setContentType("application/javascript");
	IOUtils.copy(getClass().getClassLoader().getResourceAsStream("/res/ui/fsclassloader.js"),
	response.getOutputStream());
	} else {
	super.doGet(request, response);
	}
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
	String clear = req.getParameter(POST_PARAM_CLEAR_CLASSLOADER);
	boolean shouldClear = Boolean.parseBoolean(clear);
	if (shouldClear) {
	if (classLoaderWriter != null) {
	boolean result = classLoaderWriter.delete("");
	if (result) {
	resp.getWriter().write("{ \"status\" : \"success\" }");
	resp.setStatus(HttpServletResponse.SC_OK);
	} else {
	resp.getWriter().write(
	"{ \"status\" : \"failure\", \"message\" : \"unable to clear classloader; check server log\" }");
	resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
	}
	} else {
	LOG.error(
	"Cannot get a reference to org.apache.sling.commons.fsclassloader.impl.FSClassLoaderProvider");
	resp.getWriter().write(
	"{ \"status\" : \"failure\", \"message\" : \"unable to clear classloader; check server log\" }");
	resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
	}
	} else {
	resp.getWriter().write("{ \"status\" : \"failure\", \"message\" : \"invalid command\" }");
	resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
	}
	}

	/*
	* (non-Javadoc)
	*
	* @see org.apache.felix.webconsole.AbstractWebConsolePlugin#getLabel()
	*/
	@Override
	public String getLabel() {
	return "fsclassloader";
	}

	/*
	* (non-Javadoc)
	*
	* @see javax.servlet.Servlet#getServletConfig()
	*/
	@Override
	public ServletConfig getServletConfig() {
	return this.config;
	}

	/*
	* (non-Javadoc)
	*
	* @see javax.servlet.Servlet#getServletInfo()
	*/
	@Override
	public String getServletInfo() {
	return "";
	}

	/*
	* (non-Javadoc)
	*
	* @see org.apache.felix.webconsole.AbstractWebConsolePlugin#getTitle()
	*/
	@Override
	public String getTitle() {
	return "File System Class Loader";
	}

	/*
	* (non-Javadoc)
	*
	* @see javax.servlet.Servlet#init(javax.servlet.ServletConfig)
	*/
	@Override
	public void init(ServletConfig config) throws ServletException {
	this.config = config;
	}

	/**
	* Checks whether the specified file is a file and is underneath the root
	* directory.
	*
	* @param file
	* the file to check
	* @return false if not a file or not under the root directory, true
	* otherwise
	* @throws IOException
	*/
	private boolean isValid(File file) throws IOException {
	if (file.isFile()) {
	File parent = file.getCanonicalFile().getAbsoluteFile().getParentFile();
	while (parent != null) {
	if (parent.getCanonicalPath().equals(root.getCanonicalPath())) {
	return true;
	}
	parent = parent.getParentFile();
	}
	}
	return false;
	}

	/**
	* Reads all of the files under the current file.
	*
	* @param current
	* the current file
	* @param root
	* the root file
	* @param scripts
	* the map of scripts
	* @throws IOException
	* an exception occurs reading the files
	*/
	protected static void readFiles(File current, File root, Map<String, ScriptFiles> scripts) throws IOException {
	if (current.isDirectory()) {
	File[] children = current.listFiles();
	if (children != null) {
	for (File f : children) {
	readFiles(f, root, scripts);
	}
	}
	} else {
	String script = ScriptFiles.getScript(root, current);
	if (!scripts.containsKey(script) && current.getName().endsWith(".java")) {
	scripts.put(script, new ScriptFiles(root, current));
	}
	}
	}

	/*
	* (non-Javadoc)
	*
	* @see
	* org.apache.felix.webconsole.AbstractWebConsolePlugin#renderContent(javax
	* .servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
	*/
	@Override
	protected void renderContent(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException {
	Map<String, ScriptFiles> scripts = new LinkedHashMap<String, ScriptFiles>();
	readFiles(root, root, scripts);

	Writer w = response.getWriter();

	w.write("<link rel=\"stylesheet\" type=\"text/css\" href=\"" + RES_LOC + "/prettify.css\"></link>");
	w.write("<script type=\"text/javascript\" src=\"" + RES_LOC + "/prettify.js\"></script>");
	w.write("<script type=\"text/javascript\" src=\"" + RES_LOC + "/fsclassloader.js\"></script>");
	w.write("<script>$(document).ready(prettyPrint);</script>");
	w.write("<style>.prettyprint ol.linenums > li { list-style-type: decimal; } pre.prettyprint { white-space: pre-wrap; }</style>");
	String file = request.getParameter("view");
	File toView = new File(root + file);
	w.write("<div id=\"classes\">");
	if (!StringUtils.isEmpty(file)) {
	if (isValid(toView)) {

	w.write("<p class=\"statline ui-state-highlight\">Viewing Script: " + root + file + "</p><br/><br/>");

	ScriptFiles scriptFiles = new ScriptFiles(root, toView);

	w.write("<table class=\"nicetable ui-widget\">");
	w.write("<tr class=\"header ui-widget-header\">");
	w.write("<th>Script</th>");
	w.write("<th>Class</th>");
	w.write("<th>Deps</th>");
	w.write("<th>Java</th>");
	w.write("</tr>");
	w.write("<tr class=\"ui-state-default\">");
	w.write("<td>" + scriptFiles.getScript() + "</td>");
	w.write("<td>[<a href=\"?download=" + scriptFiles.getClassFile()
	+ "\" target=\"_blank\">download</a>]</td>");
	w.write("<td>[<a href=\"?download=" + scriptFiles.getDepsFile()
	+ "\" target=\"_blank\">download</a>]</td>");
	w.write("<td>[<a href=\"?download=" + scriptFiles.getJavaFile()
	+ "\" target=\"_blank\">download</a>]</td>");
	w.write("</tr>");
	w.write("</table><br/><br/>");
	InputStream is = null;
	try {
	is = new FileInputStream(toView);
	String contents = IOUtils.toString(is, "UTF-8");
	w.write("<pre class=\"prettyprint linenums\">");
	w.write(StringEscapeUtils.escapeHtml4(contents));
	w.write("</pre>");
	} finally {
	IOUtils.closeQuietly(is);
	}
	} else {
	response.sendError(404, "File " + file + " not found");
	}
	} else {
	w.write("<p class=\"statline ui-state-highlight\">File System ClassLoader Root: " + root
	+ " <span style=\"float: right\"><button type='button' id='clear'>Clear Class Loader</button></span></p>");
	if (scripts.values().size() > 0) {
	w.write("<table class=\"nicetable ui-widget fsclassloader-has-classes\">");
	} else {
	w.write("<table class=\"nicetable ui-widget\">");
	}
	w.write("<tr class=\"header ui-widget-header\">");
	w.write("<th>View</th>");
	w.write("<th>Script</th>");
	w.write("</tr>");
	int i = 0;
	for (ScriptFiles scriptFiles : scripts.values()) {
	w.write("<tr class=\"" + (i % 2 == 0 ? "even" : "odd") + " ui-state-default\">");
	w.write("<td>[<a href=\"?view=" + scriptFiles.getJavaFile() + "\">view</a>]</td>");
	w.write("<td>" + scriptFiles.getScript() + "</td>");
	w.write("</tr>");
	i++;
	}
	w.write("</table>");
	}
	w.write("</div>");
	}
	}