1 /*
   2  * Copyright (c) 2015, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package anttasks;
  27 
  28 import java.io.File;
  29 import java.io.IOException;
  30 import java.io.UncheckedIOException;
  31 import java.net.URI;
  32 import java.net.URISyntaxException;
  33 import java.nio.file.FileSystem;
  34 import java.nio.file.FileSystems;
  35 import java.nio.file.Files;
  36 import java.nio.file.Path;
  37 import java.nio.file.StandardCopyOption;
  38 import java.util.Collections;
  39 import java.util.stream.Stream;
  40 
  41 import org.apache.tools.ant.BuildException;
  42 import org.apache.tools.ant.Task;
  43 
  44 public class DumpClassesTask extends Task {
  45 
  46     private String moduleName;
  47     private File dir;
  48 
  49     public void setModuleName(String moduleName) {
  50         this.moduleName = moduleName;
  51     }
  52 
  53     public void setDestDir(File dir) {
  54         this.dir = dir;
  55     }
  56 
  57     @Override
  58     public void execute() {
  59         try (FileSystem fs = FileSystems.newFileSystem(new URI("jrt:/"), Collections.emptyMap(), DumpClassesTask.class.getClassLoader())) {
  60             Path source = fs.getPath("modules", moduleName);
  61             Path target = dir.toPath();
  62 
  63             try (Stream<Path> content = Files.walk(source)) {
  64                 content.filter(Files :: isRegularFile)
  65                        .forEach(p -> {
  66                     try {
  67                         Path targetFile = target.resolve(source.relativize(p).toString());
  68                         if (!Files.exists(targetFile) || Files.getLastModifiedTime(targetFile).compareTo(Files.getLastModifiedTime(source)) < 0) {
  69                             Files.createDirectories(targetFile.getParent());
  70                             Files.copy(p, targetFile, StandardCopyOption.REPLACE_EXISTING);
  71                         }
  72                     } catch (IOException ex) {
  73                         throw new UncheckedIOException(ex);
  74                     }
  75                 });
  76             }
  77         } catch (URISyntaxException | IOException | UncheckedIOException ex) {
  78             throw new BuildException(ex);
  79         }
  80     }
  81 }