1 /*
   2  * Copyright (c) 2016, 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.legacy;
  27 
  28 import java.io.File;
  29 import java.io.FileInputStream;
  30 import java.io.FileNotFoundException;
  31 import java.io.IOException;
  32 import java.util.ArrayList;
  33 import java.util.Collection;
  34 import java.util.List;
  35 import java.util.zip.ZipEntry;
  36 import java.util.zip.ZipInputStream;
  37 
  38 
  39 public final class Module {
  40     private String filename;
  41     private ModuleType moduleType;
  42 
  43     public enum JarType {All, UnnamedJar, ModularJar}
  44     public enum ModuleType {Unknown, UnnamedJar, ModularJar, Jmod, ExplodedModule}
  45 
  46     public Module(File AFile) {
  47         super();
  48         filename = AFile.getPath();
  49         moduleType = getModuleType(AFile);
  50     }
  51 
  52     public String getModuleName() {
  53         File file = new File(getFileName());
  54         return getFileWithoutExtension(file.getName());
  55     }
  56 
  57     public String getFileName() {
  58         return filename;
  59     }
  60 
  61     public ModuleType getModuleType() {
  62         return moduleType;
  63     }
  64 
  65     private static ModuleType getModuleType(File AFile) {
  66         ModuleType result = ModuleType.Unknown;
  67         String filename = AFile.getAbsolutePath();
  68 
  69         if (AFile.isFile()) {
  70             if (filename.endsWith(".jmod")) {
  71                 result = ModuleType.Jmod;
  72             }
  73             else if (filename.endsWith(".jar")) {
  74                 JarType status = isModularJar(filename);
  75 
  76                 if (status == JarType.ModularJar) {
  77                     result = ModuleType.ModularJar;
  78                 }
  79                 else if (status == JarType.UnnamedJar) {
  80                     result = ModuleType.UnnamedJar;
  81                 }
  82             }
  83         }
  84         else if (AFile.isDirectory()) {
  85             File moduleInfo = new File(filename + File.separator + "module-info.class");
  86 
  87             if (moduleInfo.exists()) {
  88                 result = ModuleType.ExplodedModule;
  89             }
  90         }
  91 
  92         return result;
  93     }
  94 
  95     private static JarType isModularJar(String FileName) {
  96         JarType result = JarType.All;
  97         List<String> classNames = new ArrayList<String>();
  98 
  99         try {
 100             ZipInputStream zip = new ZipInputStream(new FileInputStream(FileName));
 101             result = JarType.UnnamedJar;
 102 
 103             try {
 104                 for (ZipEntry entry = zip.getNextEntry(); entry != null; entry = zip.getNextEntry()) {
 105                     if (entry.getName().matches("module-info.class")) {
 106                         result = JarType.ModularJar;
 107                         break;
 108                     }
 109                 }
 110 
 111                 zip.close();
 112             } catch (IOException ex) {
 113             }
 114         } catch (FileNotFoundException e) {
 115         }
 116 
 117         return result;
 118     }
 119 
 120     private static String getFileWithoutExtension(String FileName) {
 121         return FileName.replaceFirst("[.][^.]+$", "");
 122     }
 123 }