Java tutorial
/* * Copyright (c) 2012, the Dart project authors. * * Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html * * 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 com.github.sdbg.debug.core.util; import com.github.sdbg.core.DartCore; import com.github.sdbg.core.utilities.net.NetUtils; import com.github.sdbg.debug.core.SDBGDebugCorePlugin; import com.github.sdbg.debug.core.model.IResourceResolver; import com.google.common.io.CharStreams; import org.eclipse.core.resources.IFile; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IResourceVisitor; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.net.ServerSocket; import java.net.Socket; import java.net.URI; import java.net.URISyntaxException; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashSet; import java.util.List; import java.util.Set; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; /** * A web server that serves up workspace resources. */ public class ResourceServer implements IResourceResolver { private ServerSocket serverSocket; private ExecutorService threadPool; private Set<String> previousAgents = new HashSet<String>(); /** * Create a ResourceServer; serve its resources from any free port. * * @throws IOException */ public ResourceServer() throws IOException { this(0); } /** * Create a ResourceServer; serve its resources from the given port. * * @throws IOException */ public ResourceServer(int port) throws IOException { serverSocket = new ServerSocket(port); threadPool = Executors.newCachedThreadPool(); new Thread(new Runnable() { @Override public void run() { startServer(); } }, "Web Server Dispatch").start(); } /** * @return the user's IP address, if available (null otherwise) */ public String getLocalAddress() { return NetUtils.getIpAddress(); } public int getPort() { return serverSocket.getLocalPort(); } @Override public String getUrlForFile(File file) { IFile[] files = ResourcesPlugin.getWorkspace().getRoot().findFilesForLocationURI(file.toURI()); if (files.length > 0) { return getUrlForResource(files[0]); } else { return null; } } @Override public String getUrlForResource(IResource resource) { return getUrlForFilePath(resource.getFullPath().toPortableString()); } @Override public String getUrlRegexForResource(IResource resource) { IProject project = resource.getProject(); File projectDir = project.getLocation().toFile(); return projectDir.getName() + "/" + resource.getProjectRelativePath().toPortableString(); } @Override public IResource resolveUrl(String url) { try { URI uri = new URI(url); String filePath = uri.getPath(); IResource resource = ResourcesPlugin.getWorkspace().getRoot().findMember(filePath); if (resource.exists()) { return resource; } return null; } catch (Throwable t) { return null; } } /** * Close the resource server. */ public void shutdown() { try { serverSocket.close(); } catch (IOException exception) { SDBGDebugCorePlugin.logError(exception); } } protected String getAvailableAppsContent() throws IOException { InputStream in = ResourceServer.class.getResourceAsStream("template.html"); String template = CharStreams.toString(new InputStreamReader(in)); List<IFile> files = getAllExecutableFiles(); // Sort by project name, then html file name Collections.sort(files, new Comparator<IFile>() { @Override public int compare(IFile o1, IFile o2) { String str1 = o1.getFullPath().toString(); String str2 = o2.getFullPath().toString(); return str1.compareToIgnoreCase(str2); } }); if (files.size() == 0) { template = replaceTemplate(template, "count", "No"); template = replaceTemplate(template, "apps", ""); } else { template = replaceTemplate(template, "count", Integer.toString(files.size())); StringBuilder builder = new StringBuilder(); for (IFile file : files) { String hrefStart = "<a href=\"" + getPathFor(file) + "\">"; builder.append("<div class=\"app\"><table><tr>"); builder.append( "<td rowspan=2>" + hrefStart + "<img src=\"dart_16_16.gif\" width=16 height=16></a></td>"); builder.append("<td class=\"title\">" + hrefStart + webSafe(file.getFullPath().toString()) + "</a></td</tr>"); builder.append("</table></div>"); } template = replaceTemplate(template, "apps", builder.toString()); } return template; } protected void loadingContentFrom(String hostAddress, String userAgent) { if (!previousAgents.contains(userAgent)) { previousAgents.add(userAgent); //&&& // DartCore.getConsole().println( // "Remote connection from " + hostAddress + " [" + userAgent + "]"); SDBGDebugCorePlugin.log("Remote connection from " + hostAddress + " [" + userAgent + "]"); } } private List<IFile> getAllExecutableFiles() { final List<IFile> files = new ArrayList<IFile>(); for (IProject project : ResourcesPlugin.getWorkspace().getRoot().getProjects()) { //&&& // if (DartProjectNature.hasDartNature(project)) { try { project.accept(new IResourceVisitor() { @Override public boolean visit(IResource resource) throws CoreException { if (resource instanceof IFile) { IFile file = (IFile) resource; if (DartCore.isHtmlLikeFileName(file.getName())) { files.add(file); } else if ("crx".equals(file.getFileExtension())) { files.add(file); } } return true; } }); } catch (CoreException e) { } //&&& // } } return files; } private String getPathFor(IFile file) throws IOException { String url = getUrlForResource(file); return URI.create(url).getPath(); } private String getUrlForFilePath(String path) { try { URI uri = new URI("http", null, NetUtils.getLoopbackAddress(), serverSocket.getLocalPort(), path, null, null); return uri.toString(); } catch (URISyntaxException e) { SDBGDebugCorePlugin.logError(e); return null; } } private String replaceTemplate(String template, String target, String replace) { target = "${" + target + "}"; int index = template.indexOf(target); String template1 = template.substring(0, index); String template2 = template.substring(index + target.length()); return template1 + replace + template2; } private void startServer() { try { while (true) { Socket socket = serverSocket.accept(); threadPool.execute(new ResourceServerHandler(this, socket)); } } catch (IOException e) { // The server socket was closed by the shutdown() call. } } private String webSafe(String s) { StringBuffer out = new StringBuffer(); for (int i = 0; i < s.length(); i++) { char c = s.charAt(i); if (c > 127 || c == '"' || c == '<' || c == '>') { out.append("&#" + (int) c + ";"); } else { out.append(c); } } return out.toString(); } }