1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package sun.hotspot.tools.ctw;
  25 
  26 import java.net.MalformedURLException;
  27 import java.net.URL;
  28 import java.net.URLClassLoader;
  29 import java.util.*;
  30 import java.util.jar.*;
  31 import java.util.concurrent.Executor;
  32 
  33 import java.io.*;
  34 import java.nio.file.*;
  35 
  36 /**
  37  * Handler for jar-files containing classes to compile.
  38  */
  39 public class ClassPathJarEntry extends PathHandler {
  40 
  41     public ClassPathJarEntry(Path root, Executor executor) {
  42         super(root, executor);
  43         try {
  44             URL url = root.toUri().toURL();
  45             setLoader(new URLClassLoader(new URL[]{url}));
  46         } catch (MalformedURLException e) {
  47             e.printStackTrace();
  48         }
  49     }
  50 
  51     @Override
  52     public void process() {
  53         CompileTheWorld.OUT.println("# jar: " + root);
  54         if (!Files.exists(root)) {
  55             return;
  56         }
  57         try (JarFile jarFile = new JarFile(root.toFile())) {
  58             JarEntry entry;
  59             for (Enumeration<JarEntry> e = jarFile.entries();
  60                     e.hasMoreElements(); ) {
  61                 entry = e.nextElement();
  62                 processJarEntry(entry);
  63                 if (isFinished()) {
  64                     return;
  65                 }
  66             }
  67         } catch (IOException ioe) {
  68             ioe.printStackTrace();
  69         }
  70     }
  71 
  72     @Override
  73     public long classCount() {
  74         try (JarFile jarFile = new JarFile(root.toFile())) {
  75             return jarFile.stream()
  76                     .map(JarEntry::getName)
  77                     .filter(Utils::isClassFile)
  78                     .count();
  79         } catch (IOException e) {
  80             throw new Error("can not open jar file " + root + " : "
  81                     + e.getMessage() , e);
  82         }
  83     }
  84 
  85     private void processJarEntry(JarEntry entry) {
  86         String filename = entry.getName();
  87         if (Utils.isClassFile(filename)) {
  88             processClass(Utils.fileNameToClassName(filename));
  89         }
  90     }
  91 }
  92