org.openqa.selenium.server.browserlaunchers.ResourceExtractor Maven / Gradle / Ivy

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/*
 * Created on Oct 17, 2006
 *
 */
package org.openqa.selenium.server.browserlaunchers;

import static org.openqa.selenium.browserlaunchers.LauncherUtils.getSeleniumResourceAsStream;

import com.google.common.io.ByteStreams;
import com.google.common.io.Closeables;
import com.google.common.io.Resources;

import org.openqa.selenium.browserlaunchers.LauncherUtils;
import org.openqa.selenium.io.FileHandler;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Enumeration;
import java.util.logging.Logger;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;


public class ResourceExtractor {
  private static Logger log = Logger.getLogger(ResourceExtractor.class.getName());

  public static File extractResourcePath(Class cl, String resourcePath, File dest)
      throws IOException {
    boolean alwaysExtract = true;

    URL url = Resources.getResource(cl, resourcePath);
    if ("jar".equalsIgnoreCase(url.getProtocol())) {
      File jarFile = getJarFileFromUrl(url);
      extractResourcePathFromJar(cl, jarFile, resourcePath, dest);
    } else {
      try {
        File resourceFile = new File(new URI(url.toExternalForm()));
        if (!alwaysExtract) {
          return resourceFile;
        }
        if (resourceFile.isDirectory()) {
          LauncherUtils.copyDirectory(resourceFile, dest);
        } else {
          FileHandler.copy(resourceFile, dest);
        }
      } catch (URISyntaxException e) {
        throw new RuntimeException("Couldn't convert URL to File:" + url, e);
      }
    }
    return dest;
  }

  private static void extractResourcePathFromJar(Class cl, File jarFile, String resourcePath,
      File dest) throws IOException {
    ZipFile z = new ZipFile(jarFile, ZipFile.OPEN_READ);
    String zipStyleResourcePath = resourcePath.substring(1) + "/";
    ZipEntry ze = z.getEntry(zipStyleResourcePath);
    log.fine("Extracting " + resourcePath + " to " + dest.getAbsolutePath());
    if (ze != null) {
      // DGF If it's a directory, then we need to look at all the entries
      for (Enumeration entries = z.entries(); entries.hasMoreElements();) {
        ze = (ZipEntry) entries.nextElement();
        if (ze.getName().startsWith(zipStyleResourcePath)) {
          String relativePath = ze.getName().substring(zipStyleResourcePath.length());
          File destFile = new File(dest, relativePath);
          if (ze.isDirectory()) {
            destFile.mkdirs();
          } else {
            FileOutputStream fos = new FileOutputStream(destFile);
            copyStream(z.getInputStream(ze), fos);
          }
        }
      }
    } else {
      FileOutputStream fos = new FileOutputStream(dest);
      copyStream(getSeleniumResourceAsStream(resourcePath), fos);

    }
  }

  public static void traceWith(Logger log) {
    ResourceExtractor.log = log;
  }

  private static File getJarFileFromUrl(URL url) {
    if (!"jar".equalsIgnoreCase(url.getProtocol()))
      throw new IllegalArgumentException("This is not a Jar URL:"
          + url.toString());
    String resourceFilePath = url.getFile();
    int index = resourceFilePath.lastIndexOf("!");
    if (index == -1) {
      throw new RuntimeException("Bug! " + url.toExternalForm()
          + " does not have a '!'");
    }
    String jarFileURI = resourceFilePath.substring(0, index).replace(" ", "%20");
    try {
      File jarFile = new File(new URI(jarFileURI));
      return jarFile;
    } catch (URISyntaxException e) {
      throw new RuntimeException("Bug! URI failed to parse: " + jarFileURI, e);
    }

  }

  private static void copyStream(InputStream in, OutputStream out) throws IOException {
    try {
      ByteStreams.copy(in, out);
    } finally {
      Closeables.close(out, true);
      Closeables.close(in, true);
    }
  }
}