1 /*

     2  * Copyright (c) 2015, 2018, 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 jdk.packager.internal;

    27 

    28 import java.io.BufferedReader;

    29 import java.io.File;

    30 import java.io.IOException;

    31 import java.io.InputStream;

    32 import java.io.InputStreamReader;

    33 import java.io.UnsupportedEncodingException;

    34 import java.util.Optional;

    35 import java.lang.module.ModuleDescriptor;

    36 import java.lang.module.ModuleFinder;

    37 import java.lang.module.ModuleReference;

    38 import java.lang.module.ModuleReader;

    39 import java.nio.file.Path;

    40 import java.util.HashSet;

    41 import java.util.LinkedHashSet;

    42 import java.util.List;

    43 import java.util.NoSuchElementException;

    44 import java.util.Set;

    45 

    46 import jdk.tools.jlink.internal.packager.AppRuntimeImageBuilder;

    47 

    48 public final class RedistributableModules {

    49     private static final String JDK_PACKAGER_MODULE = "jdk.packager";

    50 

    51     private RedistributableModules() {}

    52 

    53     public static String stripComments(String line) {

    54         String result = line.trim();

    55         int i = result.indexOf(";");

    56 

    57         if (i >= 0) {

    58           result = result.substring(0, i);

    59           result = result.trim();

    60         }

    61 

    62         return result;

    63     }

    64 

    65     public static Set<String> getRedistributableModules(List<Path> modulePath,

    66             String filename) {

    67         Set<String> result = null;

    68 

    69         Set<String> addModules = new HashSet<>();

    70         Set<String> limitModules = new HashSet<>();

    71         ModuleFinder finder = AppRuntimeImageBuilder.moduleFinder(

    72                 modulePath, addModules, limitModules);

    73         Optional<ModuleReference> mref = finder.find(JDK_PACKAGER_MODULE);

    74 

    75         if (mref.isPresent()) {

    76             ModuleReader reader = null;

    77 

    78             try {

    79                 reader = mref.get().open();

    80             } catch (NoSuchElementException | IOException ex) {

    81             }

    82 

    83             if (reader != null) {

    84                 Optional<InputStream> stream = null;

    85 

    86                 try {

    87                     stream = reader.open(filename);

    88                 } catch (IOException ex) {

    89                 }

    90 

    91                 if (stream != null) {

    92                     if (stream.isPresent()) {

    93                         BufferedReader br = null;

    94 

    95                         try {

    96                             br = new BufferedReader(new InputStreamReader(

    97                                     stream.get(), "UTF-8"));

    98                         } catch (UnsupportedEncodingException ex) {

    99                         }

   100 

   101                         if (br != null) {

   102                             result = new LinkedHashSet<String>();

   103                             String line;

   104 

   105                             try {

   106                                 while ((line = br.readLine()) != null) {

   107                                     String module = stripComments(line);

   108 

   109                                     if (!module.isEmpty()) {

   110                                         result.add(module);

   111                                     }

   112                                 }

   113                             } catch (IOException ex) {

   114                             }

   115                         }

   116                     }

   117                 }

   118             }

   119         }

   120 

   121         return result;

   122     }

   123 

   124     public static String getModuleVersion(File moduleFile,

   125             List<Path> modulePath, Set<String> addModules,

   126             Set<String> limitModules) {

   127         String result = "";

   128 

   129         ModFile modFile = new ModFile(moduleFile);

   130         ModuleFinder finder = AppRuntimeImageBuilder.moduleFinder(modulePath,

   131                 addModules, limitModules);

   132         Optional<ModuleReference> mref = finder.find(modFile.getModName());

   133 

   134         if (mref.isPresent()) {

   135             ModuleDescriptor descriptor = mref.get().descriptor();

   136 

   137             if (descriptor != null) {

   138                 Optional<ModuleDescriptor.Version> version =

   139                         descriptor.version();

   140 

   141                 if (version.isPresent()) {

   142                     result = version.get().toString();

   143                 }

   144             }

   145         }

   146 

   147         return result;

   148     }

   149 }